水泥土组合桩三维有限元数值模拟与试验研究  

Experimental Study and Numerical Analysis of the Composite Pile

作　　者：张慧[1] 杨敏[1] 王猛[2] 

机构地区：[1]同济大学地下工程系,上海200092 [2]苏州科技大学设计院,苏州215007

出　　处：《地下空间与工程学报》2006年第4期582-586,共5页Chinese Journal of Underground Space and Engineering

摘　　要：水泥土组合桩是一种新桩型,它是在水泥搅拌桩的基础之上发展而来的。由于桩体由两部分构成,目前国内外对芯桩与外包水泥土之间的荷载传递以及桩体本身的破坏机理尚缺乏研究。文章以现有的试验数据为基础,借助有限元分析工具对水泥土组合桩进行拟合计算,对组合桩荷载传递规律及芯桩与水泥土环桩在荷载传递过程中的相互作用和共同工作特性进行数值分析,以达到对该新桩型的进一步发展提供借鉴意义的目的。The composite pile is a new pile type, the shaft section of which is composed of cement-soil ring and reinforced concrete core. Results of prototype tests have revealed that this new pile type has a series of advantages compared with the common east-in-situ pile. But as a composite pile, the interactive behavior of cement-soil ring and reinforced concrete core have not been known well. Through analyzing the data gotten from the testing and using finite element method analysis, the law of load transfer and the interactive behavior of cement - soil ring and reinforced concrete core have been assertained and at the same time a simple comment about the composite pile is given. Therefore, the authors hope that this paper could give some help to the further development of the composite pile.

关 键 词：三维有限元 组合桩 荷载-位移曲线 荷载传递 

分 类 号：TU473[建筑科学—结构工程] TB115[建筑科学—土工工程]