锦绣路沙福河桥新建工程钢板桩支护施工方案

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1、锦绣路沙福河桥新建工程钢板桩支护施工方案17目录第一章编制依据···························································3。第一章编制原则···················································3。第三章工程概况···················································4。一、工程简介···················································4。二、

2、工程量概况·················································4。三、平面布置图·················································5。第四章拉森钢板桩支护施工·········································6。一、施工准备···················································6。二、插打钢板桩、安装内支撑·····················7—11。三、基坑开挖

3、、钢板桩内支撑·····································11。四、17支护内排水·················································11。五、变形观测···················································12。六、管道施工（不作详细论述）·······································12。七、拔桩·············································

4、·12。八、钢板桩支护合拢措施保证·································13。九、八字排放口钢板桩围堰施工··································13。十、质量保证措施··························14—16。十一、安全文明保证措施·······················16—17。第一章、编制依据17一、依据**市政设计研究院有限公司设计的沙井锦绣路沙福河桥(涵)工程施工图；二、沙井锦绣路沙福河桥(涵)工程施工合同及工程量清单；三、现场调查所获取的有关资料

5、；四、沙井锦绣路沙福河桥(涵)工程指导性施工组织设计；五、本单位拥有的机械设备、施工技术、管理水平及施工经验。第二章、编制原则一、确保工期目标实现合理配置资源，突出重点工程施工，确保工程工期。二、确保质量以质量为核心，以科技为保证，坚持“质量第一，全面创优”的目标，完善质保体系，针对打拉森钢板桩支护进行编制方案，用于指导现场施工，严格控制，精心组织。三、文明施工与环境安全采用科学的工法、工艺，确保施工与环境安全，文明施工，爱护环境，主动做好各方协调，减少施工干扰；创造良好的施工、生活环境，确保职工安全、健康。四、标准化管理结合钢板桩施工项目

6、特点，建立建设管理的目标体系、责任体系、分级控制系统，按照本专项方案组织、指挥、协调、控制等基本环节。17第三章、工程概况一、工程简介锦绣路沙福河桥新建工程位于宝安沙井，该工程所在场地原始地貌属海成一级阶地，原状为宽约25米的河涌，河道两旁为厂房、道路等，河床地势平缓，场地较平整。原状桥台附近没有经过处理的地基，人工填土层较厚，一般为3.60～6.30m，地下水位较高。因锦绣路东、西侧新建雨水管及八字排放口沟槽开挖过程中，槽边两侧土质稳定性较差，均为淤泥、杂填土，杂填土为新近堆填,成份不均匀,结构疏松,未完成自重固结；淤泥、淤泥质土呈流软塑

7、状。为了防止沟槽开挖塌方，且确保钢板桩入土深度稳固性，锦绣路东、西侧设计的全部雨水主管沟槽两侧均采用Ⅲ型桩长9m的拉森钢板桩密扣支护。八字排放口周边为防止河水涨潮涌入沟槽内，采用9m长Ⅲ型的拉森钢板桩支护及袋装砂包进行支护。二、工程量概况钢板桩、支护工程量分布表如下：序号桩号、支护部位支护长度支护措施1K0+160—K0+269.930东西侧DN1500管道两侧269m×2排SP-III/长9m×宽0.4m×高×0.125m×厚0.013m拉森钢板桩支护2K0+138—K0+160西侧DN2000管道两侧28m×2排SP-III/长9m×宽

8、0.4m×高×0.125m×厚0.013m拉森钢板桩支护3八字排放口18mSP-III/长9m×宽0.4m×高×0.125m×厚0.013m拉森钢板桩支护4八字排放口支护18m尼