珊瑚礁灰岩中钢管桩动静承载力测试分析

Test and Analysis on Dynamic and Static Bearing Capacity of Steel Pipe Pile in Coral Reef Limestone

珊瑚礁灰岩是一种特殊的岩土介质,因其高达97%的碳酸钙含量,在岩土类别上可称为钙质土。但钙质土因承载力偏低,给桩基设计与施工带来很大的困难。因此有必要通过现场试验研究珊瑚礁灰岩中的承载力问题。基于非洲东海岸珊瑚礁灰岩地区的钢管桩高应变动测与静载试验结果,对该地质的基桩承载力特性进行分析。

Coral reef limestone is a kind of special geotechnical medium. Because of its high calcium carbonate content of 97%, it can be called calcareous soil in the geotechnical category. However, due to the low bearing capacity of the calcareous soil, it has brought great difficulties to the design and construction of the pile foundation. Therefore, it is necessary to conduct field tests to study the bearing capacity in coral reef limestone. Based on the results of high strain test and static load test of steel pipe piles in the limestone area of the reefs on the east coast of Africa, this paper analyzes the bearing capacity of the piles.