对用载荷试验检测搅拌桩复合地基承载力的思考  

On Inspection of Bearing Capacity of Mixing Pile Composite Foundation by Load Test

作　　者：刘志明 

机构地区：[1]中铁二院武汉勘察设计研究院有限责任公司,武汉410071

出　　处：《路基工程》2012年第6期178-179,共2页Subgrade Engineering

摘　　要：搅拌桩复合地基作为一种软基处理方法,在工程建设中应用广泛。但由于存在"群桩效应"等因素,用载荷板较小的单桩复合地基载荷试验结果比实际偏大,试验结果偏不安全。因单桩复合地基承载力与复合地基承载力存在着高度相关性,故提出在用单桩复合载荷试验来检测复合地基时需加一折减系数来保证工程安全。Mixing pile composite foundation, as a kind of treatment for soft foundation, is applied extensively in engineering construction; however, due to ＂pile group effect＂, the result of load test for single composite foundation with small load plate is larger than the actual result leading to relative insecurity. bearing pile The capacity of single pile composite foundation has high correlation with that of composite foundation, as a result, it is proposed that where load test for single pile composite foundation is used to inspect composite foundation, a reduction factor is needed to guarantee the engineering safety.

关 键 词：搅拌桩复合地基 载荷试验 检测 折减系数 

分 类 号：TU472.36[建筑科学—结构工程]