微型桩复合地基沉降和动力特性研究  

Decline and dynamic characteristics of micro-piles reinforced foundation

作　　者：王丽艳[1] 袁新明[1] 

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《水利学报》2005年第12期1492-1497,共6页Journal of Hydraulic Engineering

摘　　要：本文通过小模型试验并借助大型有限元分析软件MARC对微群桩地基模型沉降特性进行数值模拟,找出了复合地基的位移场和应力场的一些基本规律,计算结果表明,微桩加固地基对减少沉降起到了显著作用。在此基础上,利用MARC程序对天然地基和微群桩复合地基进行地震动力时程分析,得到桩的加入有利于地基抗震的结论,为微群桩复合地基工程设计应用提供了依据。The decline of micro-piles reinforced foundation was studied in model test and numerically simulated by using the software MARC of FEM. The results show that the micro-piles can remarkably reinforce the foundation and reduce the decline. On this basis, the MARC program is applied to analyze the temporal dynamic characteristics of pure soil foundation and micro-piles reinforced foundation. The comparison shows that the micro-piles are effective in elevating the earthquake resistance of foundation.

关 键 词：微群桩 天然地基 复合地基 位移 应力 时程动力响应 

分 类 号：TU435[建筑科学—岩土工程]