围堰与基坑开挖专项施工方案.doc

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1、xxxxx工程现浇箱涵工程围堰与基坑开挖专项施工方案目录一、工程概况·····································································································3二、施工组织和管理机构·················································································4三、围堰与基坑开挖施工工艺流程························

2、·········································4四、施工进度计划·····························································································5五、围堰与基坑开挖施工要点·········································································5六、土围堰设计计算····························

3、·····························································8七、基坑边坡稳定设计计算·············································································8八、安全保证措施·····························································································8九、质量保证措施······

4、·······················································································10十、文明施工措施·····························································································11十一、预防伤害安全生产事故应急救援预案·················································12十二、附件·

5、········································································································17附件1··················································································································17附件2········································

6、··········································································20附件3··················································································································23附件4······································································

7、············································24附件5··················································································································25一、工程概况Xxxxxx工程共有箱涵1座，本箱涵为4.0×4.0m双孔箱涵，中心里程桩号K0+550，箱涵中心线与设计混合车道中心线正交，涵长16.6m。采用整体式钢筋混凝土涵身，扶壁式挡土墙翼墙。箱涵净孔

8、尺寸为4.0×4.0m，箱涵宽9.2m，长16.6m。顶板厚40cm，底板厚40cm，中腹板厚40cm，边腹板厚40cm，涵身为现浇C30混凝土。底板下缘浇注10cmC15混凝土垫层，其下为10cm碎石垫层。箱涵外侧（东侧）设置水平开启的闸门，闸门