人工挖孔桩在岩溶场地某高层建筑中的应用

Hand-dug pile in karst venue in a high-rise building

高层建筑对承载力及变形要求很高,如何在岩溶地基中解决桩底沉渣厚度及桩端下的岩溶不良地质问题是个设计、施工难点。该文介绍了采用桩位钻孔取芯及人工挖孔桩成孔,并在桩底进行岩基载荷试验与物探手段确定桩端基岩完整性相结合的施工方案,较好的解决了该问题,具有较高的推广应用价值。

The high - rise buildings on the bearing capacity and deformation demanding, how to solve karst foundation pile bottom sediment thickness and pile end karst adverse geological problems is the design, construction difficulties. This article describes the use of pile bit coring and artificial digging pile into the hole in the bottom of the pile the batholith load testing and geophysical means to determine the pile end bedrock integrity combined construction program, a better solution of the problem has higher application value.