嵌岩桩承载特性及受力机理分析  

Analysis on Bearing Performances and Loading Mechanism of Rock-Imbedding Piles

作　　者：俞亚南[1] 季广丰[1] 肖海波[1] 王欣[1] 

机构地区：[1]浙江大学土木系,杭州310027

出　　处：《中国市政工程》2003年第6期54-56,58,共4页China Municipal Engineering

摘　　要：嵌岩桩的承载特性较复杂,通过对工程中嵌岩桩实测资料计算及结合有限元分析方法对其承载性状作了探讨。大量的数值计算及分析表明短粗的嵌岩桩既可能是端承型又可能是摩擦型或端承摩擦型,同时还表明嵌岩桩的极限侧阻力计算应综合考虑围岩强度、桩围岩模量比、嵌岩比、桩岩界面的粗糙度、围岩完整度等众多因素,现有有关规范需作改进和完善。Asthe bearing performancesof rock-imbedded pilesare complex,studiesare made on itsbearing state based on calculation of field data for rock-imbedded pilesand finite element analysismethod.Large quantity of value calculation and analysisshow that short&thick rock-imbedded pile isof both end-bearing property and friction property or end-bearing-friction property,and the limit lateral resistance calculationsshould consider many factorssuch asrock strength,pile rock modular ratio,rock-imbedded ratio,roughnessof pile/rock interface,rock integrity etc.It seemsthat the relevant regulationsin force are to be improved and perfected.

关 键 词：嵌岩桩 承载性状 弹塑性 有限元 围岩强度 极限侧阻力 

分 类 号：TU473.11[建筑科学—结构工程]