摘要
基于发展的堆石料的静动力耦合模型,提出一种可以在加载过程中每一时步进行外荷载和位移的平衡迭代的三维有限元分析方法,一次性完成堆石坝的施工、蓄水、地震等渐近加载过程的数值仿真模拟.应用该方法对公伯峡面板堆石坝进行全过程的数值计算,得到坝体最大沉降为98.7cm,面板峰值动拉应力为5.36MPa;进一步说明计算得到的坝体静动态响应更接近实际情况.
On the basis of static-dynamic force coupling model of rockfill material,a 3D finite element method is developed in which exterior loads and displacements can be evenly iterated in each step during the process of loading.It can complete the numerical simulation of construction of rockfill dam,storing water and seismic effect once only.This method is applied in Gong Boxia project to numerically analyze the whole process of rockfill dam.The maximum vertical displacement of the dam is 98.7 cm and the maximum dynamic major principal stress on slab is 5.36 MPa.The results approve that the static and dynamic response calculated with this method further approximate to actual circumstance.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2004年第10期886-890,共5页
Journal of Tianjin University：Science and Technology
关键词
公伯峡
面板堆石坝
静动力耦合
有限元法
Gong Boxia
concrete faced rockfill dams
static-dynamic force coupling
finite element method
