地鐵車站基坑降水施工方案

1、中鐵十二局集團(tuán)有限公司南寧軌道交通3號(hào)線01標(biāo)土建2工區(qū)創(chuàng)業(yè)路站基坑降水施工方案目錄1編制依據(jù)...........................................................................12編制目的..........................................................................13工程概況和自然條件.......

2、..........................................................13.1工程概況......................................................................13.2環(huán)境情況......................................................................23.3工程

3、地質(zhì)與水文概況............................................................54施工準(zhǔn)備..........................................................................124.1施工現(xiàn)場(chǎng)管理組織機(jī)構(gòu).........................................................1

4、24.2施工部署.....................................................................124.3機(jī)械材料準(zhǔn)備.................................................................135基坑降水............................................................

5、.............135.1基坑降水井設(shè)計(jì)情況............................................................135.2降水井施工....................................................................145.3降水安全運(yùn)行的保障措施.......................................

6、.................195.4降水實(shí)驗(yàn)......................................................................205.5降水井的封閉..................................................................245.6常見(jiàn)質(zhì)量事故原因及預(yù)防措施.............................

7、.......................286降水工程的輔助措施和補(bǔ)救措施.....................................................286.1建立沿線地下水動(dòng)態(tài)監(jiān)測(cè)網(wǎng)......................................................286.2建立沉降監(jiān)測(cè)網(wǎng)............................................

8、....................306.3降監(jiān)計(jì)劃及提交成果............................................................316.4潛水殘留水處理...............................................................336.5備用電源措施........................................

9、..........................357風(fēng)險(xiǎn)源分析以及應(yīng)急預(yù)案...........................................................357.1風(fēng)險(xiǎn)分析.....................................................................357.2應(yīng)對(duì)措施..................................

10、...................................367.3應(yīng)急預(yù)案.....................................................................368安全文明施工......................................................................388.1安全保證措施.................

11、.................................................388.2文明施工及環(huán)境保護(hù)措施........................................................399附圖.............................................................................40中鐵十二局集團(tuán)有限公司南寧軌道

12、交通3號(hào)線01標(biāo)土建2工區(qū)創(chuàng)業(yè)路站基坑降水施工方案2車站起點(diǎn)里程YDK2100.796，終點(diǎn)里程YDK2310.796。車站主體結(jié)構(gòu)外包總長(zhǎng)度210.00m，標(biāo)準(zhǔn)段外包總寬度19.7m，站臺(tái)寬11m，長(zhǎng)120m。創(chuàng)業(yè)路站兩端區(qū)間均采用盾構(gòu)法施工，車站小里程端頭井為盾構(gòu)接收井，大里程端端頭井為盾構(gòu)始發(fā)井。本車站主體結(jié)構(gòu)形式主要為單柱雙跨鋼筋混凝土框架結(jié)構(gòu)，采用明挖順做法施工，主體圍護(hù)結(jié)構(gòu)選用800mm連續(xù)墻內(nèi)支撐方案，與主體形成復(fù)合式結(jié)構(gòu)

13、，連續(xù)墻間接頭采用工字鋼柔性接頭，連續(xù)墻標(biāo)準(zhǔn)墻幅寬度為6.0m，地連墻采用C35水下混凝土，抗?jié)B等級(jí)為P8?；又ёo(hù)端頭井處設(shè)置三道支撐一道換撐，其余設(shè)三道支撐。第一道支撐采用800900混凝土支撐，并設(shè)置600600八字撐，混凝土支撐及八字撐均采用C30混凝土，冠梁兼做壓頂梁，尺寸為9001200，采用C35混凝土。標(biāo)準(zhǔn)段處第二道鋼支撐及端頭井處第三道斜撐采用Φ80016鋼支撐，其余均采用Φ60916鋼支撐端頭井處腰梁采用C30混凝土