岩溶地区素混凝土桩复合地基技术的应用实例

Application Case of Low?grade Plain Concrete Pile Foundation in Covered Karst Region

隐伏型岩溶地区地质条件复杂,建筑物常采用桩基础,当岩溶覆盖层厚度大时可采用复合地基;近年来,对沉降控制严的重要建筑物,也开始逐步探索使用刚性桩复合地基技术的可行性。介绍了深圳市龙岗文化中心的岩溶地质条件、复合地基设计和施工情况;沉降观测结果表明,在岩溶地区使用素混凝土桩复合地基技术是可行的。对类似工程有一定的参考价值。

Pile foundation is widely used in the complicate geological condition in covered karst region, and composite foundation can be adopted when the overburden thickness is enough. Recent years witnessed the increasing use of rigid pile foundation to reinfore the vital structure that the settlement is controlled strictly. The karst geological condition, the design and construction, and the settlement observation result of the low-grade plain concrete pile composite foundation for the Longgang Culture Center in Shenzhen is expounded in details. It shows that this composite foundation technology is ad-visable in karst region, and can be a feasible treatment for similar engineering.