基于原桩承载力不足的钢管混凝土补强处理

Reinforcement of Inadequate Piles with Concrete Filled Steel Tubes and Its Construction Control

结合岩溶地区某高层建筑桩基础工程,对由于持力层较差引起基桩承载力不足的问题,提出钢管混凝土补强处理方案。介绍了钢管桩补强方案的计算依据和计算方法,并对施工工艺进行了总结。高应变检测结果表明,补强方案效果良好,并且具有施工周期短、环境污染小等优点。

During the construction of pile foundations for a tall building in karst area, the bearing capacity of piles were found to be inadequate due to poor bearing stratum. The authors proposed a reinforcing method using concrete filled steel tubes. This paper introduces theoretical background and the calculation method and summarizes the construction technique. High-strain inspection result shows that this technology obtained good effect and has advantages such as short construction period and little environmental pollution.