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.
出处
《水利学报》
EI
CSCD
北大核心
2005年第12期1492-1497,共6页
Journal of Hydraulic Engineering
关键词
微群桩
天然地基
复合地基
位移
应力
时程动力响应
micro-piles
reinforced foundation
decline
temporal dynamic response
earthquake resistance
