一种预估基桩竖向承载性状的方法  

A Prediction Method in Analyzing Vertical Bearing Capacity of Loaded Piles

作　　者：彭争光[1] 高广运[1] 曹喜仁[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]湖南大学土木工程学院,长沙410082

出　　处：《工程勘察》2006年第8期10-13,68,共5页Geotechnical Investigation & Surveying

摘　　要：目前荷载传递模型的确定通常依赖于现场试验,而现场试验需要很长时间,费用也相当大,并且当地形复杂时试桩试验结果也无法应用到全部工程。而且对于次要建筑,国内规范均没有要求进行现场试验。为避免基桩竖向承载分析需要依赖大型现场试验的不便,本文首先建立了一套由常规土体室内试验确定的物理、力学性质参数来预估竖向荷载作用下基桩荷载传递模型的系统,同时借鉴以往该地的其它静载试验资料,将上述系统与遗传算法相结合,得到了由现有资料预估基桩竖向变形及承载力的综合方法。At present, the large expense and long time of field test have become the impediments to determine the load-transfer model, and the field test results can＇t be used to all piles when the landform is complicated, and that the field test is not required for secondary buildings according to domestic criteria. In order to avoid the disadvantage that the analysis of vertically loaded piles must depend on large field test, firstly, a framework to determine the load-transfer model parameters from conventional soil tests data has been established in the paper. After other field tests information being used for reference, a compositive method of calculating vertically bearing of piles with present information is proposed by combining preceding framework with Genetic Algorithm.

关 键 词：竖向承载性状 常规土体室内试验 荷载传递模型 预估 

分 类 号：TU473.1[建筑科学—结构工程]