水泥土搅拌桩复合地基静载试验检测法的安全度分析

在检测水泥土搅拌桩复合地基的承载力能否达到设计要求时 ,最常用的方法是单桩静载试验法和复合地基静载试验法。工程实践中发现 ,采用这两种静载试验方法得到的检测结果存在较大差异。笔者根据水泥土搅拌桩的基本特性 ,结合工程实例 ,对这两种静载试验检测结果存在的差异及其安全度进行比较分析 ,得出单桩静载试验法结果的安全度高于复合地基试验法结果的结论 ,因此 ,提出了一些合理化建议

Safety Analysis on Static Load Test for Composite Foundation of Cement-soil Mixing Pile

When examining whether the loading capacity of composite foundation of cement-soil mixing pile would meet with the design requirement, static load tests for single pile and composite foundation are commonly used. In engineering practice, the test results obtained from these two methods are quite different. According to basic properties of composite foundation of cement-soil mixing pile and combined with project examples, the difference of test results and safety of two methods are analyzed. It is concluded that the safety of static load test for single pile is higher than that of composite foundation. Some rationalization proposals are presented.