浅析曹妃甸某工程项目内支撑基坑施工技术

Analysis on Construction Technology of Inner Support Foundation Pit of a Project in Caofeidian

华理家园二期项目位于唐山市曹妃甸大学城,处于新近沉积的软土地区。本工程基坑支护的原始设计采用了搅拌桩内插钢板桩的支护方式,但在基坑开挖时侧壁失稳,未能达到理想的支护效果。根据现场实际情况,各方汇总意见确定采用内支撑补充的施工方案。施工中采用信息施工法,以设计方案为指导,根据现场情况及时进行调整施工方案,对出现的不利情况及时进行补救,最终支护工作达到了施工要求。

Huali Jiayuan Phase II project is located in Caofeidian University Town,Tangshan City,in a newly deposited soft soil area.The original design of the foundation pit support of this project adopted the method of inserting steel sheet piles in the mixing piles.The sidewalls became unstable during the excavation of the foundation pit,which failed to achieve the desired support effect.According to the actual situation of the site,all parties gathered opinions to determine the construction plan supplemented by internal support.The information construction method was adopted in the construction,guided by the design plan,the construction plan was adjusted in time according to the site conditions,and the unfavorable situation was remedied in time,and the final support work met the construction requirements.