安新高速公路某段涵洞施工方案目录一、工程概况IV二、施工进度..............................................IV三、施工准备..............................................IV1、图纸会审.................................................................IV2、技术交底.................................................................IV3、施工放样.................................................................IV4、进场材料.................................................................IV5、机械设备.................................................................IV6、试验准备.................................................................IV7、老涵洞八字墙的拆除........................................................V8、场地准备..................................................................V四、施工方案...............................................V（一）、老涵洞八字墙拆除方案.....................................................V1、开挖台阶法....................................................................V2、砌筑挡土墙法..................................................................V3、锚喷支护法....................................................................V（二）盖板涵、通道...............................................................V1、基坑开挖..................................................................V2、基础施工与回填...........................................................VI3、台身砌筑................................................................VII4、台帽施工...............................................................VIII5、盖板施工.................................................................IX6、台背回填.................................................................IX7、沉降缝施工...............................................................IX8、帽石、八字墙施工.........................................................IX9、洞内铺砌与洞口铺砌.......................................................IX10、施工工艺流程图如下。....................................................IX（三）箱涵.......................................................................X1、基础及垫层：..............................................................X2、底板钢筋绑扎、支模、浇筑..................................................X3、侧墙、顶板砼浇筑.........................................................XI4、拆模及养护...............................................................XI5、八字墙进、出水口砌筑.....................................................XI6、台背回填.................................................................XI7、箱涵施工工艺流程图.......................................................XI（四）新老涵拼接施工...........................................................XII1、盖板涵拼接施工..........................................................XII2、箱涵拼接施工............................................................XII3、原八字墙拆除支护方案...................................................XIII五、涵洞施工保通措施....................................XIII六、质量保证措施.........................................XIV1、质量方针................................................................XIV2、质量目标................................................................XIV3、质量、安全保证措施....................................................
