静载试验和高应变法在桩基承载力检测中的对比试验

Comparative study of static load test and high strain method for the bearing capacity test of pile foundations

以巴基斯坦某电厂桩基承载力检测为目的,分别采用静载试验法和高应变动力检测法对旋挖法和反循环法两种成桩工艺的四根试桩进行承载力检测,并对结果进行了对比分析。结果表明,静载试验与高应变法实测四根试桩的承载力特征值均大于设计承载力特征值,均满足设计要求;两种方法对不同成桩工艺桩基承载力的检测结果均具有较好的一致性,采用高应变法代替静载试验在该地区进行桩基承载力检测具有较强的可行性和适用性;为该地区桩基承载力检测提供参考和借鉴。

For the purpose of testing the bearing capacity of pile foundations in a power plant in Pakistan,static load test method and high strain dynamic test method were used to test the bearing capacity of four test piles using the rotary excavation method and the reverse circulation method.The results were compared and analyzed.The results show that the bearing capacity characteristic values of the four test piles measured by static load test and high strain method are all greater than the design bearing capacity characteristic values,which meet the design requirements;These two methods have good consistency in the detection results of pile foundation bearing capacity with different pile forming processes.The application of the high strain method instead of static load test for pile foundation bearing capacity detection in this region has strong feasibility and applicability,which provides references for the detection of pile foundation bearing capacity in this region.