慶菱路站深基坑工程專項施工方案

1、杭州地鐵2號線一期工程SG213標慶菱路站深基坑工程專項施工方案1目錄目錄第一章、編制依據(jù)............................................................1第二章、工程概況............................................................22.1工程地理位置....................................

2、.................22.2基坑工程設(shè)計概況.................................................22.3工程建設(shè)各方主體.................................................32.4場地周圍環(huán)境條件.................................................32.4.1周邊建筑物情況.......

3、......................................32.4.2周邊管線情況...............................................52.4.3地面交通情況...............................................52.4.4施工用電...................................................62.

4、4.5施工用水...................................................62.4.6氣象.......................................................62.5水文地質(zhì)條件.................................................72.6工程地質(zhì)條件..............................

5、.......................7第三章、圍護結(jié)構(gòu)設(shè)計概況....................................................93.1圍護結(jié)構(gòu)設(shè)計概況.................................................93.2設(shè)計方案的施工要求...............................................93.2.1地連墻設(shè)計

6、.................................................93.2.2立柱樁設(shè)計................................................113.2.3地基加固..................................................113.2.4支撐設(shè)計........................................

7、..........123.2.5基坑開挖、支護與回填......................................12第四章、施工重難點及對策...................................................154.1砂性土層中地下連續(xù)墻的質(zhì)量控制是本工程車站施工的重點之一........154.2確保富水、軟土、深基坑施工安全是本工程車站施工的重點之二........164.3做好基

8、坑周邊影響范圍內(nèi)建（構(gòu)）筑物及管線保護是本工程車站施工的重點之三...................................................................194.4做好環(huán)境保護、搞好文明施工，加強周邊關(guān)系協(xié)調(diào)，構(gòu)建“和諧項目”是施杭州地鐵2號線一期工程SG213標慶菱路站深基坑工程專項施工方案36.2.4鉆孔樁施工針對性技術(shù)措施.................................

9、.656.2.5樁體質(zhì)量檢查驗收..........................................666.3地基加固施工技術(shù)方案及技術(shù)措施..................................676.3.1地基加固施工方案..........................................676.3.2地基加固施工工藝流程..................................

10、....676.3.3主要技術(shù)參數(shù).............................................696.3.4施工技術(shù)要點.............................................706.3.5地基加固施工針對性技術(shù)措施................................706.3.6地基加固施工質(zhì)量驗收標準.............................

11、.....706.4懸挑體系施工技術(shù)方案和技術(shù)措施..................................716.4.1砼支撐體系施工方案........................................716.4.2懸挑體系施工工藝.........................................716.5基坑降、排水施工方法..................................

12、..........726.5.1降水目的..................................................736.5.2降水方案.................................................736.5.3基底抗突涌驗算............................................736.5.4疏干井設(shè)計...................

13、.............................756.5.5降壓井設(shè)計................................................766.5.8輕型井點降水設(shè)計..........................................826.5.9降水施工技術(shù)要點..........................................846.5.10基坑開挖及結(jié)構(gòu)施工

14、時對降水井管的保護措施.................846.5.11降水常見問題的預防措施及處理方法.........................856.5.12降水井封堵措施...........................................866.5.13基坑排水.................................................886.5.14基坑降水與排水施工質(zhì)量檢驗標準.

15、..........................886.6土方開挖及支撐架設(shè)施工技術(shù)方案和技術(shù)措施........................896.6.1基坑開挖工藝流程及施工方法................................896.6.2基坑開挖技術(shù)要點..........................................926.6.3確?；臃€(wěn)定的強制性措施.................