基坑支护桩施工工艺的分析与改进

Analysis and improvement of the construction technology of the pit support pile

厦门高崎中埔蔬菜农副产品批发市场扩建工程北侧基坑支护结构发生两次开裂、侧移,经现场勘查及讨论决定,采用悬臂式排桩支护结构进行支护。受到场地条件、工期影响等因素的限制,通过对支护桩施工工艺分析,改进施工方法,采用人工挖孔桩+旋挖桩的施工方式,成功将北侧支护桩施工完成,确保了主体工程能顺利进行。

It has happened twice that the north side of the foundation pit supporting structure cracking, side shifting in the expansion project of the vegetable and agricultural by - products wholesale market in XIAMEN, GAOQI, ZHONGPU. After the scene investigation and discussion, we decided using the row pile retaining structure of the suspension type to support. Affected by the site condition and time constraints, we improving construction method by analysis the construction of supporting pile technology. Finally, we finished the supporting pile construction of the north side successfully by employing artificial hole - digging and rotary digging pile which ensured the main body of the project can proceed smoothly.