对载荷试验确定单桩竖向承载力安全水准问题的探讨  

On safety degree of loading tests to determine bearing capacity of single pile

作　　者：刘陕南[1] 李镜培[2] 侯胜男[1] 岳建勇[1] 黄绍铭[1] 

机构地区：[1]上海现代建筑设计(集团)有限公司,上海200041 [2]同济大学地下建筑与工程系,上海200092

出　　处：《岩土工程学报》2010年第S2期582-585,共4页Chinese Journal of Geotechnical Engineering

摘　　要：依据对上海地区大量试桩资料的可靠度分析结果,对确定单桩竖向承载力不同方法的设计安全水准的现状进行分析,并进一步得出,由于载荷试验的变异性较小,采用载荷试验确定单桩承载力的可靠指标大于经验参数法和原位试验法。继而可见,与安全系数相比,采用可靠指标衡量设计安全水准更为合理;也方便不同方法之间设计安全水准的比较。Based on the reliability analysis of a great number of pile loading tests in Shanghai,the safety degree differences of different methods are compared to determine the bearing capacity of single pile.And it is found that the reliability index of loading tests is much larger than that of empirical parameter method or static penetration test method as to determine bearing capacity of single pile.It also shows that using reliability index β is more reasonable than using the safety factor,and is more convenient in comparison with different methods.

关 键 词：可靠指标 设计安全水准 单桩竖向承载力 单桩静载荷试验 

分 类 号：TU473.1[建筑科学—结构工程]