软土地区复杂环境条件下基坑监测分析

Monitoring Analysis of Foundation Pit under Complex Environmental Conditions in Soft Soil Area

软土地区深基坑施工过程中,常面临基坑变形的问题,为减小基坑开挖对周边环境的影响,需采用信息化监测手段指导基坑开挖,确保周边环境的安全。文章结合某复杂环境下的深基坑工程,针对工程中采用钻孔桩加二道混凝土支撑的支护方式,开展了基坑深层土体水平位移、周边环境沉降、支撑轴力、水位沉降等监测工作。根据现场监测结果,证明了设计方案的合理性,并在施工过程中对基坑开挖顺序、施工工艺进行了适当的调整,确保了基坑工程的顺利实施。

When the deep foundations pit excavation in soft soil area,there are many problems about foundation pit deformation.In order to reduce the influence of excavation on surrounding environment,it is needed to use information monitoring methods to guide the excavation that ensure the safety of the surrounding environment.A foundation pit in complex environment as the object,according to the bored piles with two concrete bracing structures,the pit horizontal displacement of deep soil,the settlement of the surrounding environment,axial force,water level etc is monitored.According to the monitoring results,it is proved that the design scheme of foundation pit is reasonable and the excavation sequence,construction technology is adjusted.It is successful compel the foundation pit engineering.