摘要：擬建道(dao)(dao)路穿(chuan)越薛店站場，包含6股道(dao)(dao)，且具有(you)較大高差。根據(ju)項目特點(dian)與難點(dian)，介紹了多(duo)股道(dao)(dao)大高差條件下(xia)頂進框架橋的設(she)計方(fang)案，并(bing)基(ji)于對施(shi)工技術、施(shi)工工期和(he)對運營鐵路的影響(xiang)程(cheng)(cheng)度等(deng)方(fang)面的考(kao)慮，重(zhong)點(dian)對鐵路架空方(fang)案體系通過三(san)種方(fang)案進行詳細分析(xi)比較，提出采用階梯承臺的方(fang)法解(jie)決多(duo)股道(dao)(dao)線路間的高差問題(ti)，并(bing)通過合理布置使部(bu)分樁二(er)次利用，可為類(lei)似工程(cheng)(cheng)提供借鑒(jian)。

關鍵詞：多股(gu)道；大高(gao)差；階梯承臺；鐵路架空

1工程概況

本工程(cheng)(cheng)位于新鄭(zheng)市(shi)薛(xue)店鎮，規劃為(wei)雙向(xiang)四車道(dao)(dao)(dao)的(de)城(cheng)市(shi)主(zhu)干路(lu)(lu)(lu)(lu)(lu)，根據(ju)規劃，友誼路(lu)(lu)(lu)(lu)(lu)穿(chuan)越(yue)京(jing)廣(guang)鐵(tie)路(lu)(lu)(lu)(lu)(lu)建(jian)設工程(cheng)(cheng)亟(ji)需打(da)通，以完善該區域路(lu)(lu)(lu)(lu)(lu)網結構。擬建(jian)道(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)從東向(xiang)西(xi)依次(ci)穿(chuan)越(yue)到發線(xian)(xian)3道(dao)(dao)(dao)、京(jing)廣(guang)鐵(tie)路(lu)(lu)(lu)(lu)(lu)下(xia)行線(xian)(xian)、京(jing)廣(guang)鐵(tie)路(lu)(lu)(lu)(lu)(lu)上行線(xian)(xian)、4道(dao)(dao)(dao)、6道(dao)(dao)(dao)、8道(dao)(dao)(dao)，鐵(tie)路(lu)(lu)(lu)(lu)(lu)線(xian)(xian)間距沿道(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)中心線(xian)(xian)依次(ci)為(wei)7.55m、5.08m、6.18m、5.32m、6.56m，全部為(wei)電氣化(hua)鐵(tie)路(lu)(lu)(lu)(lu)(lu)，道(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)與京(jing)廣(guang)鐵(tie)路(lu)(lu)(lu)(lu)(lu)下(xia)行線(xian)(xian)相交處(chu)鐵(tie)路(lu)(lu)(lu)(lu)(lu)里程(cheng)(cheng)為(wei)K709+970.9，道(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)中線(xian)(xian)與鐵(tie)路(lu)(lu)(lu)(lu)(lu)交角為(wei)87.2°。軌道(dao)(dao)(dao)標高差(cha)異較大，軌頂(ding)最(zui)低處(chu)為(wei)到發線(xian)(xian)8道(dao)(dao)(dao)，標高為(wei)155.60m，最(zui)高處(chu)為(wei)京(jing)廣(guang)下(xia)行線(xian)(xian)，標高156.23m，相差(cha)高達(da)63cm。

2工程地質概況及工程難點

2.1工程(cheng)地(di)(di)質(zhi)概況。1）地(di)(di)層(ceng)巖性。沿(yan)線地(di)(di)層(ceng)主(zhu)要(yao)(yao)為(wei)第四系沖洪積成(cheng)因的(de)粉(fen)砂、粉(fen)土、粉(fen)質(zhi)黏土，沿(yan)線地(di)(di)層(ceng)變化(hua)不(bu)大(da)(da)。2）地(di)(di)下水(shui)(shui)(shui)。沿(yan)線場(chang)地(di)(di)水(shui)(shui)(shui)位埋(mai)深(shen)較大(da)(da)，穩定水(shui)(shui)(shui)位埋(mai)深(shen)在(zai)18.0m左右，但在(zai)勘察時第3單元(yuan)層(ceng)見上層(ceng)滯(zhi)水(shui)(shui)(shui)，水(shui)(shui)(shui)量(liang)不(bu)大(da)(da)，主(zhu)要(yao)(yao)為(wei)大(da)(da)氣降(jiang)水(shui)(shui)(shui)。2.2工程(cheng)難(nan)點。1）鄭州航空(kong)港區作為(wei)首(shou)個國家級(ji)航空(kong)港經濟綜合試驗區，在(zai)“一(yi)(yi)帶一(yi)(yi)路”的(de)帶領下，發展一(yi)(yi)日千里，薛店(dian)站(zhan)做為(wei)航空(kong)港區后(hou)勤保障的(de)一(yi)(yi)部分(fen)，即將(jiang)升為(wei)二級(ji)物流基地(di)(di)，貨運繁忙(mang)，對工程(cheng)影響程(cheng)度要(yao)(yao)求嚴、對工期(qi)要(yao)(yao)求高。2）經調查查明，鐵路設備(bei)情況復雜，通信(xin)、信(xin)號、電力及電氣化(hua)設施均受(shou)影響，增加設計和施工難(nan)度。3）包含(han)股道較多，且股道間高差較大(da)(da)，線路架空(kong)難(nan)度高。

3方案比選

方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)選擇(ze)基(ji)(ji)(ji)于(yu)(yu)(yu)(yu)以(yi)(yi)(yi)下(xia)(xia)因素考(kao)慮：①立交(jiao)在(zai)(zai)(zai)(zai)(zai)(zai)施(shi)(shi)工(gong)(gong)(gong)(gong)中(zhong)(zhong)(zhong)對(dui)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)穩定(ding)(ding)(ding)性(xing)影(ying)(ying)響；②盡(jin)可(ke)(ke)能減(jian)少(shao)(shao)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)設(she)(she)(she)(she)施(shi)(shi)遷改(gai)(gai)；③穿(chuan)(chuan)(chuan)越方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)施(shi)(shi)工(gong)(gong)(gong)(gong)時(shi)(shi)的(de)(de)技術要(yao)(yao)求(qiu)；④道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)的(de)(de)平(ping)面(mian)線(xian)(xian)位(wei)(wei)、縱(zong)(zong)(zong)(zong)斷(duan)(duan)設(she)(she)(she)(she)計(ji)高(gao)(gao)(gao)(gao)程(cheng)、道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)的(de)(de)通行(xing)(xing)(xing)(xing)凈空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)及(ji)(ji)一(yi)(yi)般(ban)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)斷(duan)(duan)面(mian)布置(zhi)(zhi)；⑤預(yu)留規(gui)(gui)(gui)劃道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)后(hou)期(qi)(qi)改(gai)(gai)擴建空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)間(jian)(jian)；⑥市(shi)政設(she)(she)(she)(she)施(shi)(shi)穿(chuan)(chuan)(chuan)越京(jing)廣(guang)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)的(de)(de)安全(quan)(quan)技術要(yao)(yao)求(qiu)；⑦道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)的(de)(de)規(gui)(gui)(gui)劃紅線(xian)(xian)；⑧立交(jiao)的(de)(de)規(gui)(gui)(gui)模及(ji)(ji)投資(zi)。在(zai)(zai)(zai)(zai)(zai)(zai)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)與鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)立交(jiao)工(gong)(gong)(gong)(gong)程(cheng)中(zhong)(zhong)(zhong)，首先(xian)考(kao)慮選擇(ze)上(shang)(shang)(shang)(shang)跨(kua)或(huo)下(xia)(xia)穿(chuan)(chuan)(chuan)方(fang)(fang)(fang)(fang)(fang)式(shi)(shi)，本(ben)(ben)項目中(zhong)(zhong)(zhong)根(gen)據規(gui)(gui)(gui)劃要(yao)(yao)求(qiu)，新(xin)建路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)要(yao)(yao)與東(dong)側(ce)(ce)(ce)薛店大(da)(da)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)平(ping)交(jiao)，從(cong)(cong)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)縱(zong)(zong)(zong)(zong)斷(duan)(duan)方(fang)(fang)(fang)(fang)(fang)面(mian)無(wu)法(fa)(fa)滿足(zu)規(gui)(gui)(gui)范要(yao)(yao)求(qiu)，故主要(yao)(yao)從(cong)(cong)下(xia)(xia)穿(chuan)(chuan)(chuan)方(fang)(fang)(fang)(fang)(fang)式(shi)(shi)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)研(yan)究。3.1設(she)(she)(she)(she)計(ji)荷(he)(he)(he)載(zai)(zai)。1）鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)列(lie)(lie)(lie)車(che)荷(he)(he)(he)載(zai)(zai)：采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)《鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)列(lie)(lie)(lie)車(che)活載(zai)(zai)圖(tu)》（TB/T3466-2016）中(zhong)(zhong)(zhong)ZKH活載(zai)(zai)，荷(he)(he)(he)載(zai)(zai)圖(tu)式(shi)(shi)見圖(tu)1；2）道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)荷(he)(he)(he)載(zai)(zai)：城(cheng)-A級3）恒(heng)載(zai)(zai)：靜(jing)土(tu)壓(ya)力、結(jie)構(gou)(gou)自重(zhong)、附(fu)(fu)(fu)屬設(she)(she)(she)(she)備自重(zhong)、混(hun)(hun)凝(ning)土(tu)收縮徐變以(yi)(yi)(yi)及(ji)(ji)溫度(du)(du)(du)(du)影(ying)(ying)響4）其他(ta)：列(lie)(lie)(lie)車(che)沖擊力、制(zhi)動力以(yi)(yi)(yi)及(ji)(ji)活載(zai)(zai)土(tu)壓(ya)力3.2框(kuang)構(gou)(gou)橋(qiao)(qiao)主體(ti)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)。擬建道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)考(kao)慮非機(ji)動車(che)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)以(yi)(yi)(yi)及(ji)(ji)人行(xing)(xing)(xing)(xing)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)，框(kuang)構(gou)(gou)橋(qiao)(qiao)可(ke)(ke)考(kao)慮2孔(kong)16m+16m或(huo)3孔(kong)8m+16m+8m，從(cong)(cong)遠(yuan)期(qi)(qi)規(gui)(gui)(gui)劃看(kan)(kan)(kan)，2孔(kong)16m+16m更有(you)(you)利(li)于(yu)(yu)(yu)(yu)后(hou)期(qi)(qi)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)拓寬改(gai)(gai)造(zao)，推(tui)(tui)薦(jian)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)兩(liang)孔(kong)結(jie)構(gou)(gou)；由于(yu)(yu)(yu)(yu)站場(chang)車(che)輛較(jiao)(jiao)多(duo)(duo)，有(you)(you)可(ke)(ke)能會駐停在(zai)(zai)(zai)(zai)(zai)(zai)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)范圍內(nei)，為(wei)(wei)(wei)(wei)了最(zui)大(da)(da)降(jiang)低施(shi)(shi)工(gong)(gong)(gong)(gong)對(dui)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)站場(chang)的(de)(de)風險(xian)，減(jian)少(shao)(shao)軌下(xia)(xia)暴露范圍，推(tui)(tui)薦(jian)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)分(fen)(fen)(fen)幅方(fang)(fang)(fang)(fang)(fang)法(fa)(fa)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)。框(kuang)架(jia)(jia)(jia)(jia)(jia)橋(qiao)(qiao)尺寸單孔(kong)凈寬16.0m，凈高(gao)(gao)(gao)(gao)6.7m，頂(ding)(ding)(ding)(ding)(ding)板(ban)(ban)(ban)(ban)厚(hou)1.1m，底板(ban)(ban)(ban)(ban)厚(hou)1.2m，邊(bian)墻(qiang)(qiang)厚(hou)1.1m，頂(ding)(ding)(ding)(ding)(ding)板(ban)(ban)(ban)(ban)加腋(ye)1.5m×0.5m，底板(ban)(ban)(ban)(ban)加腋(ye)0.5m×0.5m，框(kuang)架(jia)(jia)(jia)(jia)(jia)頂(ding)(ding)(ding)(ding)(ding)至鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)軌頂(ding)(ding)(ding)(ding)(ding)之(zhi)(zhi)間(jian)(jian)距離不(bu)(bu)小于(yu)(yu)(yu)(yu)1.0m。3.3架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)選擇(ze)。方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)一(yi)(yi)：縱(zong)(zong)(zong)(zong)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)。縱(zong)(zong)(zong)(zong)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)是平(ping)改(gai)(gai)立工(gong)(gong)(gong)(gong)程(cheng)中(zhong)(zhong)(zhong)常用(yong)(yong)(yong)的(de)(de)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)，本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)100號工(gong)(gong)(gong)(gong)字鋼(gang)作(zuo)(zuo)為(wei)(wei)(wei)(wei)邊(bian)縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)，縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)接(jie)長(chang)必(bi)須使(shi)用(yong)(yong)(yong)專用(yong)(yong)(yong)節(jie)點(dian)(dian)(dian)(dian)板(ban)(ban)(ban)(ban)及(ji)(ji)高(gao)(gao)(gao)(gao)強螺(luo)栓(shuan)可(ke)(ke)靠連接(jie)；橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)50c號工(gong)(gong)(gong)(gong)字鋼(gang)，間(jian)(jian)距不(bu)(bu)大(da)(da)于(yu)(yu)(yu)(yu)0.6m，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)以(yi)(yi)(yi)最(zui)低處(chu)(chu)(chu)8道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)為(wei)(wei)(wei)(wei)基(ji)(ji)(ji)準(zhun)，通穿(chuan)(chuan)(chuan)所(suo)有(you)(you)股(gu)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)與鋼(gang)軌間(jian)(jian)必(bi)須可(ke)(ke)靠絕(jue)緣(yuan)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)與縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)使(shi)用(yong)(yong)(yong)U型(xing)螺(luo)栓(shuan)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)可(ke)(ke)靠連接(jie)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)與軌底之(zhi)(zhi)間(jian)(jian)孔(kong)隙用(yong)(yong)(yong)枕(zhen)木或(huo)墊(dian)(dian)塊填塞(sai)。為(wei)(wei)(wei)(wei)保(bao)(bao)證(zheng)(zheng)整體(ti)性(xing)，在(zai)(zai)(zai)(zai)(zai)(zai)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)間(jian)(jian)須布設(she)(she)(she)(she)枕(zhen)木撐(cheng)為(wei)(wei)(wei)(wei)保(bao)(bao)證(zheng)(zheng)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)穩定(ding)(ding)(ding)，在(zai)(zai)(zai)(zai)(zai)(zai)鋼(gang)軌外側(ce)(ce)(ce)與縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)間(jian)(jian)每隔2m須設(she)(she)(she)(she)木支(zhi)(zhi)(zhi)(zhi)(zhi)撐(cheng)。上(shang)(shang)(shang)(shang)部(bu)(bu)(bu)荷(he)(he)(he)載(zai)(zai)通過(guo)(guo)(guo)縱(zong)(zong)(zong)(zong)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)傳遞(di)到下(xia)(xia)部(bu)(bu)(bu)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)上(shang)(shang)(shang)(shang)，支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)直徑(jing)1.5m的(de)(de)人工(gong)(gong)(gong)(gong)挖(wa)孔(kong)樁(zhuang)(zhuang)(zhuang)(zhuang)，縱(zong)(zong)(zong)(zong)向(xiang)布設(she)(she)(she)(she)間(jian)(jian)距為(wei)(wei)(wei)(wei)8m，支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)處(chu)(chu)(chu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)5片(pian)一(yi)(yi)組(zu)作(zuo)(zuo)為(wei)(wei)(wei)(wei)抬(tai)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)，同(tong)時(shi)(shi)設(she)(she)(she)(she)置(zhi)(zhi)抗橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)移(yi)(yi)(yi)樁(zhuang)(zhuang)(zhuang)(zhuang)和(he)(he)(he)防護(hu)樁(zhuang)(zhuang)(zhuang)(zhuang)，抗橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)移(yi)(yi)(yi)樁(zhuang)(zhuang)(zhuang)(zhuang)用(yong)(yong)(yong)來(lai)(lai)抵(di)抗頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)過(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)的(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)力，防護(hu)樁(zhuang)(zhuang)(zhuang)(zhuang)是為(wei)(wei)(wei)(wei)了保(bao)(bao)證(zheng)(zheng)框(kuang)架(jia)(jia)(jia)(jia)(jia)結(jie)構(gou)(gou)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)過(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)，防止(zhi)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)土(tu)體(ti)坍塌(ta)，保(bao)(bao)證(zheng)(zheng)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)安全(quan)(quan)，防護(hu)樁(zhuang)(zhuang)(zhuang)(zhuang)設(she)(she)(she)(she)置(zhi)(zhi)在(zai)(zai)(zai)(zai)(zai)(zai)框(kuang)架(jia)(jia)(jia)(jia)(jia)結(jie)構(gou)(gou)四角處(chu)(chu)(chu)。本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)所(suo)需(xu)挖(wa)孔(kong)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)較(jiao)(jiao)多(duo)(duo)，頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)過(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)需(xu)要(yao)(yao)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)多(duo)(duo)次(ci)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)轉換(huan)，工(gong)(gong)(gong)(gong)藝復(fu)雜，施(shi)(shi)工(gong)(gong)(gong)(gong)要(yao)(yao)點(dian)(dian)(dian)(dian)多(duo)(duo)，且京(jing)廣(guang)線(xian)(xian)處(chu)(chu)(chu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)上(shang)(shang)(shang)(shang)墊(dian)(dian)設(she)(she)(she)(she)高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)達(da)63cm的(de)(de)墊(dian)(dian)塊，再加上(shang)(shang)(shang)(shang)絕(jue)緣(yuan)橡膠板(ban)(ban)(ban)(ban)，墊(dian)(dian)設(she)(she)(she)(she)高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)至少(shao)(shao)達(da)65cm，行(xing)(xing)(xing)(xing)車(che)安全(quan)(quan)有(you)(you)隱患，不(bu)(bu)推(tui)(tui)薦(jian)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)。方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)二(er)(er)：橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)搭接(jie)法(fa)(fa)。本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)是在(zai)(zai)(zai)(zai)(zai)(zai)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)一(yi)(yi)基(ji)(ji)(ji)礎上(shang)(shang)(shang)(shang)變化而成(cheng)，其內(nei)容基(ji)(ji)(ji)本(ben)(ben)相同(tong)，區別在(zai)(zai)(zai)(zai)(zai)(zai)于(yu)(yu)(yu)(yu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)分(fen)(fen)(fen)兩(liang)部(bu)(bu)(bu)分(fen)(fen)(fen)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)穿(chuan)(chuan)(chuan)所(suo)有(you)(you)股(gu)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)，從(cong)(cong)各股(gu)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)的(de)(de)標高(gao)(gao)(gao)(gao)看(kan)(kan)(kan)，兩(liang)部(bu)(bu)(bu)分(fen)(fen)(fen)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)搭接(jie)位(wei)(wei)置(zhi)(zhi)只(zhi)(zhi)能位(wei)(wei)于(yu)(yu)(yu)(yu)京(jing)廣(guang)上(shang)(shang)(shang)(shang)行(xing)(xing)(xing)(xing)線(xian)(xian)處(chu)(chu)(chu)才能有(you)(you)效降(jiang)低軌道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)高(gao)(gao)(gao)(gao)差，將(jiang)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1從(cong)(cong)西向(xiang)東(dong)開(kai)始穿(chuan)(chuan)(chuan)越8道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)、6道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)、4道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)到達(da)京(jing)廣(guang)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)上(shang)(shang)(shang)(shang)行(xing)(xing)(xing)(xing)線(xian)(xian)下(xia)(xia)方(fang)(fang)(fang)(fang)(fang)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)2從(cong)(cong)東(dong)向(xiang)西穿(chuan)(chuan)(chuan)越京(jing)廣(guang)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)上(shang)(shang)(shang)(shang)下(xia)(xia)行(xing)(xing)(xing)(xing)和(he)(he)(he)3道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)，并在(zai)(zai)(zai)(zai)(zai)(zai)京(jing)廣(guang)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)上(shang)(shang)(shang)(shang)行(xing)(xing)(xing)(xing)線(xian)(xian)下(xia)(xia)落(luo)在(zai)(zai)(zai)(zai)(zai)(zai)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)抬(tai)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)1上(shang)(shang)(shang)(shang)，如圖(tu)2所(suo)示(shi)：由于(yu)(yu)(yu)(yu)東(dong)側(ce)(ce)(ce)股(gu)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)以(yi)(yi)(yi)3道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)標高(gao)(gao)(gao)(gao)最(zui)低，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)二(er)(er)穿(chuan)(chuan)(chuan)越時(shi)(shi)需(xu)要(yao)(yao)以(yi)(yi)(yi)3道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)為(wei)(wei)(wei)(wei)基(ji)(ji)(ji)準(zhun)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)一(yi)(yi)定(ding)(ding)(ding)位(wei)(wei)標高(gao)(gao)(gao)(gao)比橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)二(er)(er)低一(yi)(yi)個(ge)(ge)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)，即(ji)50cm，兩(liang)部(bu)(bu)(bu)分(fen)(fen)(fen)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)搭接(jie)部(bu)(bu)(bu)分(fen)(fen)(fen)用(yong)(yong)(yong)U型(xing)螺(luo)栓(shuan)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)連接(jie)。軌道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)與橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)之(zhi)(zhi)間(jian)(jian)的(de)(de)孔(kong)隙采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)枕(zhen)木進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)墊(dian)(dian)設(she)(she)(she)(she)，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)一(yi)(yi)上(shang)(shang)(shang)(shang)最(zui)大(da)(da)墊(dian)(dian)設(she)(she)(she)(she)高(gao)(gao)(gao)(gao)為(wei)(wei)(wei)(wei)25cm,橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)二(er)(er)上(shang)(shang)(shang)(shang)最(zui)大(da)(da)墊(dian)(dian)設(she)(she)(she)(she)高(gao)(gao)(gao)(gao)為(wei)(wei)(wei)(wei)26cm，遠(yuan)低于(yu)(yu)(yu)(yu)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)一(yi)(yi)的(de)(de)墊(dian)(dian)設(she)(she)(she)(she)高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)。但本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)在(zai)(zai)(zai)(zai)(zai)(zai)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)實施(shi)(shi)時(shi)(shi)比較(jiao)(jiao)困難，橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)一(yi)(yi)有(you)(you)部(bu)(bu)(bu)分(fen)(fen)(fen)處(chu)(chu)(chu)于(yu)(yu)(yu)(yu)懸臂狀(zhuang)態，兩(liang)處(chu)(chu)(chu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)通過(guo)(guo)(guo)螺(luo)栓(shuan)鉸接(jie)在(zai)(zai)(zai)(zai)(zai)(zai)一(yi)(yi)起(qi)，頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)施(shi)(shi)工(gong)(gong)(gong)(gong)中(zhong)(zhong)(zhong)不(bu)(bu)利(li)于(yu)(yu)(yu)(yu)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)力向(xiang)抗橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)移(yi)(yi)(yi)樁(zhuang)(zhuang)(zhuang)(zhuang)傳遞(di)，易使(shi)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)間(jian)(jian)產生相對(dui)位(wei)(wei)移(yi)(yi)(yi)，且搭接(jie)位(wei)(wei)置(zhi)(zhi)位(wei)(wei)于(yu)(yu)(yu)(yu)國家干線(xian)(xian)京(jing)廣(guang)線(xian)(xian)處(chu)(chu)(chu)，對(dui)行(xing)(xing)(xing)(xing)車(che)穩定(ding)(ding)(ding)有(you)(you)影(ying)(ying)響，不(bu)(bu)推(tui)(tui)薦(jian)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)。方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)三(san)：D型(xing)便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)。常用(yong)(yong)(yong)的(de)(de)D型(xing)便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)有(you)(you)D12、D16、D20和(he)(he)(he)D24四種類型(xing)，跨(kua)度(du)(du)(du)(du)分(fen)(fen)(fen)別為(wei)(wei)(wei)(wei)Lp=12.06m、16.08m、20.1m、24.12m，長(chang)度(du)(du)(du)(du)分(fen)(fen)(fen)別為(wei)(wei)(wei)(wei)12.4m、16.4m、20.48m、24.5m。便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)的(de)(de)最(zui)大(da)(da)優點(dian)(dian)(dian)(dian)是在(zai)(zai)(zai)(zai)(zai)(zai)不(bu)(bu)中(zhong)(zhong)(zhong)斷(duan)(duan)行(xing)(xing)(xing)(xing)車(che)的(de)(de)情況下(xia)(xia)，利(li)用(yong)(yong)(yong)它進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)橋(qiao)(qiao)涵(han)的(de)(de)開(kai)挖(wa)和(he)(he)(he)施(shi)(shi)工(gong)(gong)(gong)(gong)，并且具(ju)有(you)(you)運輸和(he)(he)(he)拆裝(zhuang)方(fang)(fang)(fang)(fang)(fang)便(bian)的(de)(de)特點(dian)(dian)(dian)(dian)，本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)D24和(he)(he)(he)D12兩(liang)種邊(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)對(dui)各股(gu)道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)單獨進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)。由于(yu)(yu)(yu)(yu)分(fen)(fen)(fen)幅頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)施(shi)(shi)工(gong)(gong)(gong)(gong)，便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)需(xu)要(yao)(yao)轉換(huan)，故整個(ge)(ge)施(shi)(shi)工(gong)(gong)(gong)(gong)需(xu)要(yao)(yao)兩(liang)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)，架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)直徑(jing)1.8m的(de)(de)人工(gong)(gong)(gong)(gong)挖(wa)孔(kong)樁(zhuang)(zhuang)(zhuang)(zhuang)，挖(wa)孔(kong)樁(zhuang)(zhuang)(zhuang)(zhuang)護(hu)壁(bi)厚(hou)度(du)(du)(du)(du)為(wei)(wei)(wei)(wei)15cm，同(tong)時(shi)(shi)在(zai)(zai)(zai)(zai)(zai)(zai)3道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)和(he)(he)(he)8道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)安裝(zhuang)護(hu)軌，在(zai)(zai)(zai)(zai)(zai)(zai)框(kuang)架(jia)(jia)(jia)(jia)(jia)橋(qiao)(qiao)就(jiu)位(wei)(wei)處(chu)(chu)(chu)的(de)(de)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)過(guo)(guo)(guo)渡處(chu)(chu)(chu)設(she)(she)(she)(she)置(zhi)(zhi)直徑(jing)1.25m的(de)(de)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)防護(hu)樁(zhuang)(zhuang)(zhuang)(zhuang)；由于(yu)(yu)(yu)(yu)線(xian)(xian)間(jian)(jian)距原因，部(bu)(bu)(bu)分(fen)(fen)(fen)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)間(jian)(jian)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)只(zhi)(zhi)能布設(she)(she)(she)(she)單個(ge)(ge)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)，這就(jiu)導(dao)致部(bu)(bu)(bu)分(fen)(fen)(fen)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)必(bi)須共用(yong)(yong)(yong)，承(cheng)擔(dan)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)兩(liang)片(pian)施(shi)(shi)工(gong)(gong)(gong)(gong)便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)傳遞(di)的(de)(de)荷(he)(he)(he)載(zai)(zai)。第(di)一(yi)(yi)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)設(she)(she)(she)(she)計(ji)分(fen)(fen)(fen)別見圖(tu)3、圖(tu)4：從(cong)(cong)上(shang)(shang)(shang)(shang)圖(tu)可(ke)(ke)以(yi)(yi)(yi)看(kan)(kan)(kan)出(chu)，整個(ge)(ge)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)共布設(she)(she)(she)(she)48個(ge)(ge)受力支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)，其中(zhong)(zhong)(zhong)40個(ge)(ge)人工(gong)(gong)(gong)(gong)挖(wa)孔(kong)樁(zhuang)(zhuang)(zhuang)(zhuang)，8個(ge)(ge)硬(ying)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)，通過(guo)(guo)(guo)計(ji)算，樁(zhuang)(zhuang)(zhuang)(zhuang)長(chang)分(fen)(fen)(fen)別有(you)(you)18m、15m、8m、5m四種。。第(di)一(yi)(yi)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)D12+D24+D24三(san)跨(kua)組(zu)合進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)，在(zai)(zai)(zai)(zai)(zai)(zai)下(xia)(xia)部(bu)(bu)(bu)用(yong)(yong)(yong)機(ji)械進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)橋(qiao)(qiao)涵(han)開(kai)挖(wa)，用(yong)(yong)(yong)中(zhong)(zhong)(zhong)繼頂(ding)(ding)(ding)(ding)(ding)將(jiang)北(bei)側(ce)(ce)(ce)框(kuang)架(jia)(jia)(jia)(jia)(jia)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)到位(wei)(wei)。北(bei)側(ce)(ce)(ce)框(kuang)架(jia)(jia)(jia)(jia)(jia)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)后(hou)，完成(cheng)回填道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)碴(cha)及(ji)(ji)恢復(fu)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)作(zuo)(zuo)業，人工(gong)(gong)(gong)(gong)拆除(chu)牛腿扣件(jian)(jian)螺(luo)栓(shuan)，使(shi)鋼(gang)枕(zhen)與縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)分(fen)(fen)(fen)離，通過(guo)(guo)(guo)縱(zong)(zong)(zong)(zong)移(yi)(yi)(yi)架(jia)(jia)(jia)(jia)(jia)設(she)(she)(she)(she)方(fang)(fang)(fang)(fang)(fang)式(shi)(shi)將(jiang)D梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)縱(zong)(zong)(zong)(zong)移(yi)(yi)(yi)到位(wei)(wei)，開(kai)始進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)第(di)二(er)(er)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)，圖(tu)5為(wei)(wei)(wei)(wei)第(di)二(er)(er)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)斷(duan)(duan)面(mian)示(shi)意：圖(tu)5第(di)二(er)(er)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)斷(duan)(duan)面(mian)圖(tu)第(di)二(er)(er)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)D24+D12兩(liang)跨(kua)組(zu)合，從(cong)(cong)圖(tu)上(shang)(shang)(shang)(shang)可(ke)(ke)以(yi)(yi)(yi)看(kan)(kan)(kan)出(chu)，D24便(bian)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)一(yi)(yi)端(duan)落(luo)在(zai)(zai)(zai)(zai)(zai)(zai)第(di)四排(pai)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)上(shang)(shang)(shang)(shang)，另一(yi)(yi)端(duan)落(luo)在(zai)(zai)(zai)(zai)(zai)(zai)已頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)的(de)(de)框(kuang)架(jia)(jia)(jia)(jia)(jia)邊(bian)墻(qiang)(qiang)上(shang)(shang)(shang)(shang)，邊(bian)墻(qiang)(qiang)上(shang)(shang)(shang)(shang)墊(dian)(dian)設(she)(she)(she)(she)枕(zhen)木垛來(lai)(lai)調節(jie)控制(zhi)縱(zong)(zong)(zong)(zong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)，在(zai)(zai)(zai)(zai)(zai)(zai)D梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)架(jia)(jia)(jia)(jia)(jia)設(she)(she)(she)(she)過(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)，第(di)四排(pai)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)在(zai)(zai)(zai)(zai)(zai)(zai)兩(liang)次(ci)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)中(zhong)(zhong)(zhong)得(de)到了重(zhong)復(fu)利(li)用(yong)(yong)(yong)。在(zai)(zai)(zai)(zai)(zai)(zai)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)下(xia)(xia)部(bu)(bu)(bu)用(yong)(yong)(yong)機(ji)械進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)橋(qiao)(qiao)涵(han)開(kai)挖(wa)，并鑿除(chu)第(di)三(san)排(pai)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)，用(yong)(yong)(yong)中(zhong)(zhong)(zhong)繼頂(ding)(ding)(ding)(ding)(ding)將(jiang)南側(ce)(ce)(ce)框(kuang)架(jia)(jia)(jia)(jia)(jia)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)到設(she)(she)(she)(she)計(ji)位(wei)(wei)置(zhi)(zhi)。本(ben)(ben)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)工(gong)(gong)(gong)(gong)藝清(qing)晰，施(shi)(shi)工(gong)(gong)(gong)(gong)簡便(bian)，支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)樁(zhuang)(zhuang)(zhuang)(zhuang)數量較(jiao)(jiao)少(shao)(shao)，且不(bu)(bu)需(xu)要(yao)(yao)設(she)(she)(she)(she)置(zhi)(zhi)抗橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)移(yi)(yi)(yi)樁(zhuang)(zhuang)(zhuang)(zhuang)，頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)過(guo)(guo)(guo)程(cheng)中(zhong)(zhong)(zhong)不(bu)(bu)需(xu)要(yao)(yao)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)支(zhi)(zhi)(zhi)(zhi)(zhi)點(dian)(dian)(dian)(dian)轉換(huan)，施(shi)(shi)工(gong)(gong)(gong)(gong)速度(du)(du)(du)(du)快，能明顯減(jian)少(shao)(shao)工(gong)(gong)(gong)(gong)期(qi)(qi)和(he)(he)(he)要(yao)(yao)點(dian)(dian)(dian)(dian)數，軌道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)高(gao)(gao)(gao)(gao)差通過(guo)(guo)(guo)階梯(ti)承(cheng)臺(tai)有(you)(you)效地得(de)到解決，使(shi)站場(chang)列(lie)(lie)(lie)車(che)安全(quan)(quan)穩定(ding)(ding)(ding)性(xing)得(de)能到較(jiao)(jiao)好的(de)(de)保(bao)(bao)障。推(tui)(tui)薦(jian)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)此(ci)方(fang)(fang)(fang)(fang)(fang)案(an)(an)(an)(an)(an)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)線(xian)(xian)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)架(jia)(jia)(jia)(jia)(jia)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)加固(gu)。3.4工(gong)(gong)(gong)(gong)作(zuo)(zuo)坑設(she)(she)(she)(she)計(ji)。工(gong)(gong)(gong)(gong)作(zuo)(zuo)坑主要(yao)(yao)包(bao)括(kuo)基(ji)(ji)(ji)坑、后(hou)背(bei)(bei)及(ji)(ji)滑(hua)(hua)板(ban)(ban)(ban)(ban)系統。根(gen)據場(chang)地條件(jian)(jian)，預(yu)制(zhi)工(gong)(gong)(gong)(gong)作(zuo)(zuo)坑深(shen)為(wei)(wei)(wei)(wei)10m,設(she)(she)(she)(she)置(zhi)(zhi)在(zai)(zai)(zai)(zai)(zai)(zai)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)西側(ce)(ce)(ce)。兩(liang)側(ce)(ce)(ce)邊(bian)坡坡度(du)(du)(du)(du)按照1:1設(she)(she)(she)(she)計(ji)，臨近鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)側(ce)(ce)(ce)坡度(du)(du)(du)(du)1:1.5，5m高(gao)(gao)(gao)(gao)度(du)(du)(du)(du)處(chu)(chu)(chu)設(she)(she)(she)(she)1m寬的(de)(de)平(ping)臺(tai)；基(ji)(ji)(ji)坑邊(bian)坡采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)掛(gua)鋼(gang)筋(jin)網(wang)噴(pen)射混(hun)(hun)凝(ning)土(tu)方(fang)(fang)(fang)(fang)(fang)式(shi)(shi)防護(hu)，鋼(gang)筋(jin)網(wang)規(gui)(gui)(gui)格為(wei)(wei)(wei)(wei)15cm×15cm的(de)(de)φ10鋼(gang)筋(jin)網(wang)片(pian)，噴(pen)射混(hun)(hun)凝(ning)土(tu)強度(du)(du)(du)(du)等級為(wei)(wei)(wei)(wei)C20，厚(hou)10cm；基(ji)(ji)(ji)坑坡頂(ding)(ding)(ding)(ding)(ding)四周設(she)(she)(she)(she)置(zhi)(zhi)截水(shui)溝(gou)，坑底順道(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)(dao)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)兩(liang)側(ce)(ce)(ce)設(she)(she)(she)(she)置(zhi)(zhi)有(you)(you)集(ji)水(shui)井和(he)(he)(he)排(pai)水(shui)溝(gou)，坡面(mian)埋設(she)(she)(she)(she)φ10cm泄(xie)水(shui)孔(kong)。后(hou)背(bei)(bei)形式(shi)(shi)主要(yao)(yao)有(you)(you)重(zhong)力式(shi)(shi)、板(ban)(ban)(ban)(ban)樁(zhuang)(zhuang)(zhuang)(zhuang)式(shi)(shi)和(he)(he)(he)鋼(gang)筋(jin)混(hun)(hun)凝(ning)土(tu)拼(pin)裝(zhuang)式(shi)(shi)后(hou)背(bei)(bei)，根(gen)據施(shi)(shi)工(gong)(gong)(gong)(gong)計(ji)劃，施(shi)(shi)工(gong)(gong)(gong)(gong)時(shi)(shi)先(xian)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)鐵(tie)(tie)路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)節(jie)點(dian)(dian)(dian)(dian)施(shi)(shi)工(gong)(gong)(gong)(gong)。滑(hua)(hua)板(ban)(ban)(ban)(ban)系統應(ying)有(you)(you)足(zu)夠的(de)(de)剛度(du)(du)(du)(du)和(he)(he)(he)強度(du)(du)(du)(du)，以(yi)(yi)(yi)保(bao)(bao)證(zheng)(zheng)框(kuang)架(jia)(jia)(jia)(jia)(jia)橋(qiao)(qiao)結(jie)構(gou)(gou)在(zai)(zai)(zai)(zai)(zai)(zai)預(yu)制(zhi)和(he)(he)(he)頂(ding)(ding)(ding)(ding)(ding)進(jin)(jin)(jin)(jin)中(zhong)(zhong)(zhong)的(de)(de)順利(li)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)(xing)，滑(hua)(hua)板(ban)(ban)(ban)(ban)采(cai)(cai)(cai)(cai)用(yong)(yong)(yong)C30鋼(gang)筋(jin)混(hun)(hun)凝(ning)土(tu)，厚(hou)度(du)(du)(du)(du)20cm，在(zai)(zai)(zai)(zai)(zai)(zai)滑(hua)(hua)板(ban)(ban)(ban)(ban)下(xia)(xia)設(she)(she)(she)(she)置(zhi)(zhi)縱(zong)(zong)(zong)(zong)橫(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)(heng)向(xiang)的(de)(de)錨梁(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)(liang)，并在(zai)(zai)(zai)(zai)(zai)(zai)滑(hua)(hua)板(ban)(ban)(ban)(ban)下(xia)(xia)鋪設(she)(she)(she)(she)10cm的(de)(de)碎石(shi)墊(dian)(dian)層。3.5其他(ta)附(fu)(fu)(fu)屬設(she)(she)(she)(she)計(ji)由于(yu)(yu)(yu)(yu)本(ben)(ben)工(gong)(gong)(gong)(gong)程(cheng)水(shui)位(wei)(wei)較(jiao)(jiao)深(shen)，不(bu)(bu)必(bi)考(kao)慮路(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)(lu)基(ji)(ji)(ji)浸泡及(ji)(ji)抗浮風險(xian)，所(suo)以(yi)(yi)(yi)只(zhi)(zhi)需(xu)設(she)(she)(she)(she)置(zhi)(zhi)擋(dang)墻(qiang)(qiang)即(ji)可(ke)(ke)，類型(xing)原則為(wei)(wei)(wei)(wei)6～10m為(wei)(wei)(wei)(wei)扶壁(bi)式(shi)(shi)擋(dang)墻(qiang)(qiang)，2～6m為(wei)(wei)(wei)(wei)懸臂式(shi)(shi)擋(dang)墻(qiang)(qiang)，2m以(yi)(yi)(yi)下(xia)(xia)為(wei)(wei)(wei)(wei)重(zhong)力式(shi)(shi)擋(dang)墻(qiang)(qiang)，其他(ta)附(fu)(fu)(fu)屬可(ke)(ke)在(zai)(zai)(zai)(zai)(zai)(zai)下(xia)(xia)階段根(gen)據具(ju)體(ti)情況選擇(ze)設(she)(she)(she)(she)置(zhi)(zhi)。

4結論

本(ben)(ben)文(wen)對友(you)誼路(lu)穿(chuan)越薛店站場鐵(tie)路(lu)工(gong)程(cheng)方案優(you)(you)劣性進行了(le)對比，所推薦方案得到了(le)鐵(tie)路(lu)局相關專家(jia)及站段領(ling)導的(de)(de)認可(ke)，順利(li)通(tong)過了(le)評審(shen)，得出以下幾(ji)點結論：1）對具有(you)高差的(de)(de)多股道線(xian)路(lu)，在(zai)線(xian)路(lu)架(jia)空設(she)計(ji)中，結合項目特點，可(ke)通(tong)過在(zai)樁頂設(she)置階梯承(cheng)臺來有(you)效(xiao)解決軌道之間的(de)(de)高差問題，增加列車的(de)(de)穩定(ding)性。2）在(zai)架(jia)空范圍內(nei)通(tong)過合理的(de)(de)平(ping)面布置，使部分(fen)架(jia)空支點樁得到二次利(li)用(yong)，能提高施(shi)工(gong)效(xiao)率，降低(di)工(gong)程(cheng)成本(ben)(ben)。3）根據施(shi)工(gong)計(ji)劃及周邊條(tiao)件(jian)，合理選擇(ze)工(gong)作坑后背形式(shi)，最大限度利(li)用(yong)天然條(tiao)件(jian)提供(gong)頂進的(de)(de)反力，實現優(you)(you)化設(she)計(ji)。