内撑式排桩支护结构在深基坑工程中的应用

Application of Inner-braced-pile-pile Support Structure in Deep Foundation Pit Engineering

研究深基坑施工中内撑式排桩支护结构的具体应用。运用案例分析法选取支护方案,并对支护方案进行验算,同时,通过建模法得知位移数据,据此分析深基坑危险系数。研究结果表明:内撑式排桩支护结构是对基坑进行支撑和保护的结构,通过提升钻孔灌注桩质量、联结排桩与旋喷桩、严控泥浆掺入量等措施保证施工安全,推动施工任务顺利完成。研究结论为深基坑工程支护人员提供理论支持和实践指导。

This paper studies the concrete application of supporting structure of inner bracing type pile in deep foundation pit construction.The case analysis method is used to select the supporting scheme and check the supporting scheme.At the same time,the displacement data are obtained by modeling method,and the risk coefficient of deep foundation pit is analyzed accordingly.The research results show that the support structure of inner-braced pile-row is the structure to support and protect the foundation pit,which can ensure the construction safety by improving the quality of bored cast-in-place pile,connecting the pile-row with rotary jet pile,strictly controlling the amount of mud incorporation,and promoting the smooth completion of the construction task.The research conclusion provides theoretical support and practical guidance for deep foundation pit engineering support personnel.