XXX大道西段快速路工程Ш标段全长1061m（k4+124~k5+185）,主要为高架桥梁、地面桥和地面道路等，涉及深基坑的承台和桥台位于半塘河、沉木河、中横河等三座桥梁处。
一、工程概况··········································3
1、深基坑概况·············································3
2、地质情况···············································4
3、平面位置···············································4
二、编制依据··········································4
三、施工计划··········································5
1、施工时间安排···········································5
2、资源投入情况···········································5
四、工艺方法··········································5
1、总体设想···············································5
2、施工流程···············································6
3、围堰施工···············································6
4、河边桥台开挖支护方法···································6
5、陆地基坑开挖支护方法···································7
6、钢板桩施工·············································7
7、土方开挖···············································8................