基坑支护方案(桩支护).doc

住宅项目小市政工程化粪池土方开挖支护专项施工方案 2010 年7月 1 目录一、编制说明················································································ 3 二、工程概况················································································ 4 三、主要施工部署及进度安排·························································· 10 四、基坑边坡支护设计方案····························································· 14 五、主要施工方法及技术措施·························································· 17 化粪池基坑围护结构施工划分及施工顺序································ 17 钻孔灌注桩施工································································· 19 冠梁施工·········································································· 22 土方开挖·········································································· 23 桩间土护壁施工································································· 26 八、质量保证措施········································································· 28 九、安全保证措施········································································· 33 十、文明施工及环保措施································································ 37 十一、雨季施工方案······································································ 39 十二、基坑施工监测······································································ 43 十三、应急处理预案······································································ 45 附录 1 :土钉支护稳定性验算··························································· 49 2 附录 2 :深基坑支护设计( D=******@1200 ) ········································· 53 3 一、编制说明 编制依据(1) 由综合管线深化设计图、市政道路平面分区图、沥青混凝土路面做法详图及化粪池设计说明书。(2) 居住项目小市政工程招标文件。(3) 勘察设计研究院提供的项目岩土工程勘察报告。(4) 现场调查情况和业主、总承包等单位提供的信息、资料等(5) 自有的设备物资资源,经济、技术实力及类似工程施工经验。(6) 本工程所涉及的施工技术、质量验收、安全、环保等方面的国家和北京市制定的规范、标准、法规文件等。 编制原则(1) 充分理解工程甲方和设计图纸要求,在对现场进行细致考察的基础上,合理的编制专项施工方案,使其科学、适用、且安全经济。(2) 施工总体部署合理,施工计划可行、高效,确保总体工期要求。(3) 采用先进的设备和科学的管理方式确保工程质量和施工安全。(4) 在施工全过程中采取周密的环境保护措施及文明施工措施。 编制范围本专项方案编制范围为居住项目近接现况网吧二层楼的 2#、3#化粪池基坑工程施工, 包括人员、材料、设备、土方开挖、施工区域楼房保护等的施工设计方案,对工期、质量、安全、文明施工的管理措施。二、工程概况 工程简介住宅项目位于北京市×××× 。施工范