沉井施工在城市河涌泵站建设中的运用

The Application of Open Caisson Method in the Construction of City Canal Water Pumping Station

在河涌泵站建设中实施沉井施工,可以避免拆迁,减少投资,但在可塑黏土层进行沉井施工极易产生下沉困难、沉井扭曲变形、下沉偏差等问题.叙述的工程施工实例,通过设置内撑体系克服土压力作用、采取综合纠偏措施等施工工艺,解决了这些技术问题.

The application of the Open Caisson Method in the construction of City Canal Water Pumping Station could bring us some financial benefits including avoiding building demolishment and resident removal,and reducing some other costs.Problems such as sinking difficulity,torsional deformation and sinking error of open caisson are likely to arise by applying the Open Caisson Method on the stratified clay level of high plasticity.It discusses some related construction performances and finds out the applicable solutions to these technical problems by adjusting the internal supporting system for earth pressure and adopting comprehensive rectifying deviation method.