導語：市(shi)政(zheng)下(xia)穿通道(dao)地鐵車(che)站(zhan)合建設計分析(xi)一文來源于(yu)網友上傳(chuan)，不(bu)代表本站(zhan)觀點，若需要原創文章可咨詢(xun)客服老師，歡迎(ying)參考(kao)。

摘要：文中以具體工程為例，對市政下穿通道與地鐵車站合建設(she)(she)計過程中的設(she)(she)計思路、設(she)(she)計方(fang)案(an)以及設(she)(she)計要點做分(fen)析(xi)，希望對(dui)后(hou)期類似工程提供設(she)(she)計經驗。

關鍵詞：市(shi)政下穿通道；地鐵車站；合建設計

隨著我(wo)國(guo)城(cheng)市(shi)(shi)(shi)(shi)(shi)快速發(fa)展，城(cheng)市(shi)(shi)(shi)(shi)(shi)人口(kou)出(chu)行交通(tong)(tong)(tong)量快速增長且(qie)多樣(yang)化，各類(lei)交通(tong)(tong)(tong)基礎設(she)施建(jian)設(she)也加快推進，實(shi)現城(cheng)市(shi)(shi)(shi)(shi)(shi)總體規(gui)(gui)劃的(de)(de)時(shi)空(kong)(kong)(kong)目標。城(cheng)市(shi)(shi)(shi)(shi)(shi)為(wei)解決道路(lu)擁(yong)堵問(wen)(wen)題(ti)，客(ke)流(liu)(liu)大(da)的(de)(de)城(cheng)市(shi)(shi)(shi)(shi)(shi)主干道規(gui)(gui)劃有地(di)(di)鐵(tie)線路(lu)，出(chu)現了市(shi)(shi)(shi)(shi)(shi)政(zheng)下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)道與(yu)(yu)規(gui)(gui)劃地(di)(di)鐵(tie)共路(lu)而發(fa)生沖突的(de)(de)問(wen)(wen)題(ti)。以往(wang)的(de)(de)設(she)計思路(lu)多為(wei)分(fen)(fen)步(bu)設(she)計、分(fen)(fen)期(qi)實(shi)施，但(dan)主要存在以下(xia)(xia)問(wen)(wen)題(ti)：（1）地(di)(di)鐵(tie)車站(zhan)臨(lin)近(jin)市(shi)(shi)(shi)(shi)(shi)政(zheng)通(tong)(tong)(tong)道設(she)置，市(shi)(shi)(shi)(shi)(shi)政(zheng)通(tong)(tong)(tong)道與(yu)(yu)車站(zhan)實(shi)施征地(di)(di)規(gui)(gui)模較大(da)，造成(cheng)地(di)(di)下(xia)(xia)空(kong)(kong)(kong)間資(zi)源浪(lang)(lang)費(fei)，且(qie)車站(zhan)附屬出(chu)入口(kou)設(she)置需過街與(yu)(yu)下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)道沖突，功能較差。（2）地(di)(di)鐵(tie)采用區間下(xia)(xia)穿(chuan)(chuan)或側穿(chuan)(chuan)市(shi)(shi)(shi)(shi)(shi)政(zheng)通(tong)(tong)(tong)道段，車站(zhan)設(she)置避開(kai)市(shi)(shi)(shi)(shi)(shi)政(zheng)通(tong)(tong)(tong)道，避免與(yu)(yu)市(shi)(shi)(shi)(shi)(shi)政(zheng)通(tong)(tong)(tong)道沖突，車站(zhan)未(wei)設(she)置在客(ke)流(liu)(liu)大(da)的(de)(de)交叉口(kou)，造成(cheng)客(ke)流(liu)(liu)覆蓋功能較差。為(wei)減少(shao)征地(di)(di)拆遷，避免地(di)(di)下(xia)(xia)空(kong)(kong)(kong)間資(zi)源浪(lang)(lang)費(fei)，避免分(fen)(fen)步(bu)分(fen)(fen)期(qi)建(jian)設(she)造成(cheng)工(gong)程(cheng)投資(zi)浪(lang)(lang)，實(shi)現市(shi)(shi)(shi)(shi)(shi)政(zheng)下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)道與(yu)(yu)地(di)(di)鐵(tie)車站(zhan)設(she)置功能最優，更好服務人們出(chu)行，更好契合(he)(he)城(cheng)市(shi)(shi)(shi)(shi)(shi)發(fa)展。本(ben)文(wen)將通(tong)(tong)(tong)過具(ju)體工(gong)程(cheng)案(an)例，對市(shi)(shi)(shi)(shi)(shi)政(zheng)下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)道與(yu)(yu)地(di)(di)鐵(tie)車站(zhan)合(he)(he)建(jian)設(she)計中涉及(ji)到(dao)的(de)(de)問(wen)(wen)題(ti)進行研究(jiu)分(fen)(fen)析，為(wei)后續類(lei)似工(gong)程(cheng)提(ti)供相關設(she)計經驗。

1項目背景

潘墩(dun)(dun)站(zhan)為福州地鐵6號線(xian)(xian)一(yi)期第一(yi)個(ge)車站(zhan)，車站(zhan)位(wei)于倉山區潘墩(dun)(dun)路(lu)與(yu)(yu)林浦(pu)路(lu)交叉口(kou)，沿林浦(pu)路(lu)方向布置，為地下三層（含下穿隧道）島式車站(zhan)，大里程端設(she)單(dan)渡線(xian)(xian)，小里程端設(she)折返線(xian)(xian)，車站(zhan)總長601.9m，設(she)置4個(ge)附屬出入口(kou)。潘墩(dun)(dun)下穿通道位(wei)于林浦(pu)路(lu)與(yu)(yu)潘墩(dun)(dun)路(lu)交叉口(kou)，為地下一(yi)層，與(yu)(yu)潘墩(dun)(dun)站(zhan)合建(jian)，同期實(shi)施，隧道總長680m，其中北側(ce)U型(xing)槽段280m，箱型(xing)結構隧道段160m，南(nan)側(ce)U型(xing)槽段240m。

2設計思路

（1）根據(ju)城(cheng)(cheng)市總(zong)體規劃及(ji)(ji)城(cheng)(cheng)市軌道(dao)交通(tong)線(xian)網(wang)規劃，林浦路與潘墩路交叉口同時規劃有市政(zheng)下(xia)穿通(tong)道(dao)及(ji)(ji)地(di)(di)(di)鐵車(che)(che)(che)站(zhan)，設計應考慮兩(liang)者的空(kong)間關系(xi)銜接。（2）市政(zheng)下(xia)穿通(tong)道(dao)與地(di)(di)(di)鐵6號線(xian)工(gong)(gong)程(cheng)(cheng)建(jian)設時序相近，為減(jian)少征地(di)(di)(di)拆(chai)遷避免(mian)地(di)(di)(di)下(xia)空(kong)間資(zi)源(yuan)浪費(fei)，避免(mian)分步分期建(jian)設造成工(gong)(gong)程(cheng)(cheng)投資(zi)浪費(fei)，采(cai)用下(xia)穿通(tong)道(dao)與地(di)(di)(di)鐵車(che)(che)(che)站(zhan)合(he)(he)建(jian)的方式(shi)。（3）結合(he)(he)市政(zheng)下(xia)穿通(tong)道(dao)及(ji)(ji)地(di)(di)(di)鐵車(che)(che)(che)站(zhan)的規模(mo)、埋深(shen)及(ji)(ji)工(gong)(gong)程(cheng)(cheng)造價等特點，工(gong)(gong)程(cheng)(cheng)方案采(cai)用下(xia)穿通(tong)道(dao)地(di)(di)(di)下(xia)一層(ceng)(ceng)、地(di)(di)(di)鐵車(che)(che)(che)站(zhan)地(di)(di)(di)下(xia)三層(ceng)(ceng)（站(zhan)廳(ting)層(ceng)(ceng)為負二層(ceng)(ceng)）的豎向布置。（4）潘墩站(zhan)為6號線(xian)起點站(zhan)，需要折返(fan)功能，車(che)(che)(che)站(zhan)大里(li)程(cheng)(cheng)段設單渡(du)線(xian)，小里(li)程(cheng)(cheng)段設折返(fan)線(xian)，車(che)(che)(che)站(zhan)規模(mo)大，在滿(man)足功能、規范等要求下(xia)，應盡可(ke)能地(di)(di)(di)減(jian)小車(che)(che)(che)站(zhan)埋深(shen)，減(jian)少施工(gong)(gong)風險(xian)及(ji)(ji)工(gong)(gong)程(cheng)(cheng)投資(zi)。

3設計方案

3.1平面設計

潘(pan)墩(dun)(dun)下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)位于林浦路(lu)(lu)與潘(pan)墩(dun)(dun)路(lu)(lu)交(jiao)(jiao)叉口(kou)，為(wei)實現(xian)林浦路(lu)(lu)快速化(hua)目標，交(jiao)(jiao)叉方(fang)式(shi)采(cai)用(yong)下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)立(li)交(jiao)(jiao)方(fang)式(shi)，設(she)計(ji)速度(du)為(wei)80km/h，雙向六車(che)道(dao)，主體結構(gou)(gou)(gou)三個部分，U型(xing)(xing)槽(cao)+下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)隧道(dao)+U型(xing)(xing)槽(cao)形(xing)式(shi)。下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)總長(chang)680m，線(xian)路(lu)(lu)中(zhong)(zhong)心(xin)線(xian)最小半徑為(wei)1000m，標準段(duan)(duan)(duan)(duan)總寬(kuan)29.9m，其中(zhong)(zhong)北側(ce)U型(xing)(xing)槽(cao)段(duan)(duan)(duan)(duan)280m，箱型(xing)(xing)結構(gou)(gou)(gou)隧道(dao)段(duan)(duan)(duan)(duan)160m，南側(ce)U型(xing)(xing)槽(cao)段(duan)(duan)(duan)(duan)240m。潘(pan)墩(dun)(dun)站(zhan)(zhan)(zhan)位于林浦路(lu)(lu)與潘(pan)墩(dun)(dun)路(lu)(lu)交(jiao)(jiao)叉口(kou)，沿(yan)林浦路(lu)(lu)方(fang)向布(bu)(bu)置(zhi)，采(cai)用(yong)跨(kua)路(lu)(lu)口(kou)布(bu)(bu)置(zhi)方(fang)式(shi)，車(che)站(zhan)(zhan)(zhan)為(wei)地(di)(di)下(xia)(xia)(xia)(xia)(xia)三層(ceng)島式(shi)車(che)站(zhan)(zhan)(zhan)，車(che)站(zhan)(zhan)(zhan)有(you)效站(zhan)(zhan)(zhan)臺(tai)位于下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)隧道(dao)正(zheng)下(xia)(xia)(xia)(xia)(xia)方(fang)，大(da)里程端設(she)單(dan)渡線(xian)，小里程端設(she)折返(fan)線(xian)，車(che)站(zhan)(zhan)(zhan)總長(chang)601.9m，標準段(duan)(duan)(duan)(duan)總寬(kuan)20.1~2.06m，設(she)置(zhi)4個附屬出入(ru)口(kou)及3個風亭(ting)。受地(di)(di)鐵(tie)車(che)站(zhan)(zhan)(zhan)平曲(qu)線(xian)不侵入(ru)有(you)效站(zhan)(zhan)(zhan)臺(tai)、車(che)站(zhan)(zhan)(zhan)小里程端設(she)折返(fan)線(xian)并預(yu)留遠期延伸條件，地(di)(di)鐵(tie)線(xian)路(lu)(lu)中(zhong)(zhong)心(xin)線(xian)與下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)中(zhong)(zhong)心(xin)線(xian)無法(fa)完全擬合(he)，因此(ci)北側(ce)U型(xing)(xing)槽(cao)與車(che)站(zhan)(zhan)(zhan)結構(gou)(gou)(gou)平面(mian)存在不吻(wen)合(he)的情形(xing)。如(ru)圖1所(suo)示。3.2縱(zong)(zong)斷面(mian)設(she)計(ji)下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)采(cai)用(yong)“穿(chuan)(chuan)通(tong)(tong)型(xing)(xing)縱(zong)(zong)坡(po)(po)(po)，最大(da)縱(zong)(zong)坡(po)(po)(po)采(cai)用(yong)4％，最小縱(zong)(zong)坡(po)(po)(po)采(cai)用(yong)0.2％，因下(xia)(xia)(xia)(xia)(xia)穿(chuan)(chuan)通(tong)(tong)道(dao)箱型(xing)(xing)結構(gou)(gou)(gou)隧道(dao)段(duan)(duan)(duan)(duan)與地(di)(di)鐵(tie)車(che)站(zhan)(zhan)(zhan)共(gong)(gong)板(ban)合(he)建，因此(ci)該段(duan)(duan)(duan)(duan)縱(zong)(zong)坡(po)(po)(po)與地(di)(di)鐵(tie)車(che)站(zhan)(zhan)(zhan)縱(zong)(zong)坡(po)(po)(po)保持一致，采(cai)用(yong)地(di)(di)鐵(tie)設(she)計(ji)規(gui)范規(gui)定2‰。兩側(ce)U型(xing)(xing)槽(cao)段(duan)(duan)(duan)(duan)與車(che)站(zhan)(zhan)(zhan)縱(zong)(zong)坡(po)(po)(po)不一致，無法(fa)共(gong)(gong)板(ban)合(he)建，夾層(ceng)采(cai)用(yong)砂土回填，壓實度(du)≥槽(cao)5％。如(ru)圖2所(suo)示。

3.3橫斷面設計

3.3.1典型斷面(mian)一：箱(xiang)型結構(gou)隧道共板段市(shi)政通道設置雙向(xiang)(xiang)六(liu)車(che)道，兩(liang)側設檢(jian)(jian)修道，主(zhu)(zhu)體(ti)(ti)墻厚0.7m，標準(zhun)寬度為29.9m。地(di)鐵車(che)站(zhan)(zhan)有效(xiao)(xiao)站(zhan)(zhan)臺11m，主(zhu)(zhu)體(ti)(ti)墻厚0.9m，標準(zhun)寬度為20.1m。3.3.2典型斷面(mian)二：U型槽(cao)與車(che)站(zhan)(zhan)分離(li)段市(shi)政通道設置雙向(xiang)(xiang)六(liu)車(che)道，兩(liang)側設檢(jian)(jian)修道，U型槽(cao)結構(gou)厚0.7m，標準(zhun)寬度為29.9m。地(di)鐵車(che)站(zhan)(zhan)有效(xiao)(xiao)站(zhan)(zhan)臺11m，主(zhu)(zhu)體(ti)(ti)墻厚0.9m，標準(zhun)寬度為20.1m。

3.4結構設計

潘墩(dun)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)為地(di)(di)下(xia)三(san)層(ceng)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)，其中負一層(ceng)為市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)（箱(xiang)型框架(jia)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)+U型槽結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)），負二(er)、負三(san)層(ceng)分(fen)(fen)別為站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)廳層(ceng)及站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)臺層(ceng)（箱(xiang)型框架(jia)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)）。市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)與(yu)(yu)潘墩(dun)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)按(an)交(jiao)叉范(fan)圍(wei)(wei)(wei)(wei)不(bu)同(tong)，基坑(keng)(keng)(keng)圍(wei)(wei)(wei)(wei)護(hu)(hu)及主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)設計分(fen)(fen)三(san)個(ge)部分(fen)(fen)。3.4.1基坑(keng)(keng)(keng)圍(wei)(wei)(wei)(wei)護(hu)(hu)設計基坑(keng)(keng)(keng)采(cai)用(yong)明挖法施(shi)工(gong)，結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)型式(shi)(shi)為復合結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)。（1）市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)斜(xie)跨(kua)(kua)(kua)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)區(qu)(qu)(qu)域，采(cai)用(yong)深(shen)基坑(keng)(keng)(keng)（地(di)(di)下(xia)三(san)層(ceng)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)）外掛淺基坑(keng)(keng)(keng)（地(di)(di)下(xia)一層(ceng)市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)，含(han)U型槽段）的(de)開挖形(xing)(xing)(xing)(xing)式(shi)(shi)。深(shen)基坑(keng)(keng)(keng)采(cai)用(yong)地(di)(di)下(xia)連(lian)續(xu)墻(qiang)(qiang)+內支(zhi)撐(cheng)的(de)圍(wei)(wei)(wei)(wei)護(hu)(hu)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)形(xing)(xing)(xing)(xing)式(shi)(shi)，淺基坑(keng)(keng)(keng)根(gen)(gen)據(ju)(ju)基底埋(mai)深(shen)不(bu)同(tong)選(xuan)用(yong)SMW工(gong)法樁(zhuang)+內支(zhi)撐(cheng)和(he)放坡(po)+土釘支(zhi)護(hu)(hu)的(de)的(de)圍(wei)(wei)(wei)(wei)護(hu)(hu)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)形(xing)(xing)(xing)(xing)式(shi)(shi)。（2）市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)上(shang)(shang)跨(kua)(kua)(kua)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)區(qu)(qu)(qu)域，采(cai)用(yong)坑(keng)(keng)(keng)中坑(keng)(keng)(keng)方案，外坑(keng)(keng)(keng)下(xia)穿(chuan)隧道(dao)(dao)(dao)部分(fen)(fen)采(cai)用(yong)SMW工(gong)法樁(zhuang)+內支(zhi)撐(cheng)的(de)圍(wei)(wei)(wei)(wei)護(hu)(hu)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)形(xing)(xing)(xing)(xing)式(shi)(shi)，內坑(keng)(keng)(keng)采(cai)用(yong)地(di)(di)下(xia)連(lian)續(xu)墻(qiang)(qiang)+內支(zhi)撐(cheng)的(de)圍(wei)(wei)(wei)(wei)護(hu)(hu)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)形(xing)(xing)(xing)(xing)式(shi)(shi)。（3）市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)上(shang)(shang)跨(kua)(kua)(kua)盾(dun)構(gou)(gou)(gou)(gou)(gou)(gou)區(qu)(qu)(qu)間區(qu)(qu)(qu)域，市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)根(gen)(gen)據(ju)(ju)基底埋(mai)深(shen)不(bu)同(tong)選(xuan)用(yong)SMW工(gong)法樁(zhuang)+內支(zhi)撐(cheng)和(he)放坡(po)+土釘支(zhi)護(hu)(hu)的(de)的(de)圍(wei)(wei)(wei)(wei)護(hu)(hu)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)形(xing)(xing)(xing)(xing)式(shi)(shi)。3.4.2主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)設計（1）196m范(fan)圍(wei)(wei)(wei)(wei)市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)斜(xie)跨(kua)(kua)(kua)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)，該區(qu)(qu)(qu)域采(cai)用(yong)底板(ban)設置抗(kang)拔樁(zhuang)以(yi)滿(man)足市(shi)政(zheng)(zheng)(zheng)(zheng)隧道(dao)(dao)(dao)抗(kang)浮(fu)(fu)需求(qiu)。（2）350m范(fan)圍(wei)(wei)(wei)(wei)市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)平面上(shang)(shang)與(yu)(yu)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)主(zhu)(zhu)體(ti)(ti)重合，該區(qu)(qu)(qu)域利用(yong)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)結(jie)(jie)(jie)(jie)構(gou)(gou)(gou)(gou)(gou)(gou)柱抬升至市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)底板(ban)，市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)底板(ban)與(yu)(yu)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)頂板(ban)砂土互(hu)層(ceng)回(hui)填實(shi)現上(shang)(shang)部荷載的(de)傳遞（根(gen)(gen)據(ju)(ju)二(er)者豎向關系，其中有270m范(fan)圍(wei)(wei)(wei)(wei)為下(xia)穿(chuan)通(tong)(tong)道(dao)(dao)(dao)與(yu)(yu)車(che)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)頂板(ban)共板(ban)）。（3）134m范(fan)圍(wei)(wei)(wei)(wei)市(shi)政(zheng)(zheng)(zheng)(zheng)通(tong)(tong)道(dao)(dao)(dao)U型槽位于潘墩(dun)站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)~林浦站(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)盾(dun)構(gou)(gou)(gou)(gou)(gou)(gou)區(qu)(qu)(qu)間上(shang)(shang)方，該區(qu)(qu)(qu)段根(gen)(gen)據(ju)(ju)抗(kang)浮(fu)(fu)計算(suan)需求(qiu)在上(shang)(shang)、下(xia)行(xing)盾(dun)構(gou)(gou)(gou)(gou)(gou)(gou)區(qu)(qu)(qu)間之間及盾(dun)構(gou)(gou)(gou)(gou)(gou)(gou)外側設置抗(kang)拔樁(zhuang)。

3.5路面結構(gou)設計

采用復(fu)合式(shi)(shi)路面(mian)(mian)結(jie)(jie)構(gou)：4cmSMA-13C改性(xing)瀝(li)(li)(li)青(qing)瑪(ma)蹄脂碎(sui)石(shi)+6cmAC-16C中粒式(shi)(shi)瀝(li)(li)(li)青(qing)混凝(ning)土(tu)+AC-25C粗粒式(shi)(shi)瀝(li)(li)(li)青(qing)混凝(ning)土(tu)調(diao)平(ping)層，平(ping)均(jun)厚度約(yue)23cm。常(chang)規下穿通道(dao)路面(mian)(mian)結(jie)(jie)構(gou)：4cmSMA-13C改性(xing)瀝(li)(li)(li)青(qing)瑪(ma)蹄脂碎(sui)石(shi)+6cmAC-16C中粒式(shi)(shi)瀝(li)(li)(li)青(qing)混凝(ning)土(tu)+24cm水泥混凝(ning)土(tu)板+C15水泥混凝(ning)土(tu)調(diao)平(ping)層，平(ping)均(jun)厚度約(yue)52.5cm。采用復(fu)合式(shi)(shi)路面(mian)(mian)結(jie)(jie)構(gou)比(bi)常(chang)規路面(mian)(mian)結(jie)(jie)構(gou)厚度減(jian)小(xiao)0.3m，在相同(tong)凈空條(tiao)件下，可減(jian)小(xiao)地(di)鐵車站整體(ti)埋(mai)深0.3m，減(jian)少(shao)工(gong)程投資約(yue)700萬元。

3.6其他工程

3.6.1排水(shui)(shui)(shui)工(gong)程(cheng)下(xia)穿通(tong)道兩側設置(zhi)(zhi)(zhi)雨水(shui)(shui)(shui)邊溝，并在最(zui)低點附近設置(zhi)(zhi)(zhi)一座泵(beng)(beng)(beng)房(fang),匯集(ji)U型槽段雨水(shui)(shui)(shui)及通(tong)道內(nei)排水(shui)(shui)(shui)于(yu)集(ji)水(shui)(shui)(shui)井(jing)內(nei),通(tong)過集(ji)水(shui)(shui)(shui)井(jing)內(nei)的潛水(shui)(shui)(shui)泵(beng)(beng)(beng)提升后，最(zui)終(zhong)排入就近水(shui)(shui)(shui)系。潛水(shui)(shui)(shui)泵(beng)(beng)(beng)選用防(fang)堵(du)塞型潛水(shui)(shui)(shui)排污泵(beng)(beng)(beng)，采用3臺潛水(shui)(shui)(shui)泵(beng)(beng)(beng)流(liu)量為2000m3/h，揚程(cheng)15m，功率132kW，兩用一備，三臺泵(beng)(beng)(beng)交替(ti)使用。超(chao)過暴雨重現期時(shi)，三臺泵(beng)(beng)(beng)同時(shi)啟動。3.6.2交通(tong)工(gong)程(cheng)在常規標志(zhi)標線設置(zhi)(zhi)(zhi)外(wai)，考慮合建地鐵車站運營安全(quan)，在雙向進口位置(zhi)(zhi)(zhi)設置(zhi)(zhi)(zhi)禁止運輸危(wei)險物(wu)品車輛駛入標志(zhi)以及限(xian)高門架，禁止運輸危(wei)險物(wu)品車輛和超(chao)限(xian)車輛進入下(xia)穿通(tong)道。

4下穿通道與地鐵車站合建設計要點

（1）平面設(she)(she)計(ji)(ji)應盡可(ke)能擬合(he)下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道與地(di)(di)(di)鐵(tie)(tie)車(che)(che)(che)(che)(che)站(zhan)(zhan)中心線(xian)，后期結構(gou)(gou)設(she)(she)計(ji)(ji)受(shou)力(li)相(xiang)對(dui)簡單(dan)(dan)，減(jian)少異形結構(gou)(gou)設(she)(she)計(ji)(ji)及施(shi)工難度，特殊情況車(che)(che)(che)(che)(che)站(zhan)(zhan)亦(yi)可(ke)采用(yong)(yong)曲線(xian)站(zhan)(zhan)臺形式。（2）道路(lu)最小縱(zong)坡為(wei)0.3%，車(che)(che)(che)(che)(che)站(zhan)(zhan)縱(zong)坡一(yi)般采用(yong)(yong)2‰，考(kao)(kao)(kao)慮(lv)兩者共板(ban)合(he)建(jian)，應優先滿(man)足地(di)(di)(di)鐵(tie)(tie)車(che)(che)(che)(che)(che)站(zhan)(zhan)縱(zong)坡要求，一(yi)致采用(yong)(yong)2‰坡度，下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道可(ke)加強排水設(she)(she)施(shi)設(she)(she)計(ji)(ji)。（3）采用(yong)(yong)復合(he)式路(lu)面結構(gou)(gou)，相(xiang)比常規路(lu)面結構(gou)(gou)可(ke)減(jian)少路(lu)面厚度，從而(er)減(jian)小車(che)(che)(che)(che)(che)站(zhan)(zhan)整體埋深，減(jian)少工程投資及施(shi)工風險。需要注意攤鋪瀝青路(lu)面層(ceng)(ceng)前應對(dui)底板(ban)（共板(ban)）拉毛處理并(bing)撒布改性乳化瀝青透層(ceng)(ceng)油(you)。（4）結構(gou)(gou)計(ji)(ji)算荷(he)載(zai)(zai)。下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道頂板(ban)除考(kao)(kao)(kao)慮(lv)上覆(fu)水土(tu)(tu)壓力(li)外，按(an)地(di)(di)(di)鐵(tie)(tie)設(she)(she)計(ji)(ji)標準考(kao)(kao)(kao)慮(lv)20kPa的(de)地(di)(di)(di)面超載(zai)(zai)；車(che)(che)(che)(che)(che)站(zhan)(zhan)頂板(ban)與下(xia)(xia)穿(chuan)(chuan)隧道共板(ban)段，車(che)(che)(che)(che)(che)站(zhan)(zhan)頂板(ban)除考(kao)(kao)(kao)慮(lv)路(lu)面結構(gou)(gou)層(ceng)(ceng)荷(he)載(zai)(zai)外按(an)城(cheng)-A級標準考(kao)(kao)(kao)慮(lv)汽車(che)(che)(che)(che)(che)荷(he)載(zai)(zai)。車(che)(che)(che)(che)(che)站(zhan)(zhan)中板(ban)按(an)地(di)(di)(di)鐵(tie)(tie)設(she)(she)計(ji)(ji)規范要求考(kao)(kao)(kao)慮(lv)裝(zhuang)修、吊頂、設(she)(she)備(bei)、人群等荷(he)載(zai)(zai)。側(ce)墻(qiang)按(an)靜止土(tu)(tu)壓力(li)計(ji)(ji)算水土(tu)(tu)壓力(li)。下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道底板(ban)與車(che)(che)(che)(che)(che)站(zhan)(zhan)頂板(ban)分離段，單(dan)(dan)獨考(kao)(kao)(kao)慮(lv)各自(zi)結構(gou)(gou)板(ban)荷(he)載(zai)(zai)。（5）結構(gou)(gou)防(fang)水。防(fang)水等級按(an)地(di)(di)(di)鐵(tie)(tie)標車(che)(che)(che)(che)(che)站(zhan)(zhan)標準取一(yi)級。除結構(gou)(gou)自(zi)防(fang)水外（下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道部(bu)分混(hun)凝(ning)土(tu)(tu)抗滲(shen)等級P8），采用(yong)(yong)“全(quan)外包”防(fang)水設(she)(she)計(ji)(ji)，底板(ban)及側(ce)墻(qiang)主要采用(yong)(yong)非瀝青基自(zi)粘膠防(fang)水卷材(cai)，頂板(ban)采用(yong)(yong)2.5mm厚單(dan)(dan)組分聚(ju)氨酯防(fang)水涂料。（6）應選(xuan)用(yong)(yong)可(ke)靠的(de)排水系統，避(bi)免暴雨期造成下(xia)(xia)穿(chuan)(chuan)通(tong)(tong)(tong)(tong)道給水，引發地(di)(di)(di)鐵(tie)(tie)車(che)(che)(che)(che)(che)站(zhan)(zhan)頂板(ban)滲(shen)漏(lou)水的(de)風險。

5結語

地(di)鐵(tie)車(che)站(zhan)與(yu)下(xia)穿通道(dao)設(she)計(ji)涉(she)及(ji)諸多(duo)專業，兩(liang)者作為(wei)不同(tong)的(de)交通設(she)施體(ti)系有各自(zi)的(de)特(te)點，設(she)計(ji)需同(tong)時依據地(di)鐵(tie)車(che)站(zhan)與(yu)下(xia)穿通道(dao)的(de)設(she)計(ji)標準、規范與(yu)設(she)計(ji)原(yuan)則，并充分(fen)考慮下(xia)穿通道(dao)與(yu)地(di)鐵(tie)車(che)站(zhan)合(he)建(jian)設(she)計(ji)要(yao)(yao)點，才能(neng)更好地(di)利用空(kong)間(jian)關系，在滿(man)足功能(neng)、技術規范等(deng)要(yao)(yao)求，合(he)理設(she)計(ji)車(che)站(zhan)與(yu)下(xia)穿通道(dao)合(he)建(jian)，減少兩(liang)者間(jian)的(de)交叉(cha)問題，并減少施工風險及(ji)工程(cheng)投資。本文對此類(lei)(lei)合(he)建(jian)工程(cheng)設(she)計(ji)過(guo)程(cheng)中(zhong)的(de)問題進行分(fen)析研究，總結出合(he)建(jian)的(de)設(she)計(ji)要(yao)(yao)點，希望對后(hou)續(xu)類(lei)(lei)似工程(cheng)提供參(can)考價值。

參考文獻

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作(zuo)者：李良(liang) 單(dan)位：廣州地(di)鐵設(she)計研(yan)究院股份有限公(gong)司