摘要
本文对深基坑双排桩支护结构进行了三维数值模拟,研究了支护结构主要设计参数与空间效应冠梁影响长度Lc的关系,通过分析不同参数变化下的冠梁影响长度的规律得出:基坑短边长度、开挖深度和支护结构排距的变化对Lc都有较大影响;而基坑长边长度、冠梁刚度、粘聚力、摩擦角和支护结构桩距的变化对Lc影响很小。
In this paper, three-dimensional simulation of supporting structures with double-row piles is conducted to study the relationships between affecting length （Lc） of crown beam under spatial effect and major design pa- rameters. Through the analysis of laws of Lc at variations in different parameters, we obtain that the variations in the short edge length of foundation pit, the excavation depth and the row spacing of supporting structure have large in- fluence on the Lc, and the variations in the long edge length of foundation pit, the crown beam rigidity, the cohe- sion and friction angle of soil layers and the pile spacing of supporting structure have very small influence on the Lc.
出处
《广州建筑》
2013年第4期3-8,共6页
GUANGZHOU ARCHITECTURE
关键词
双排桩
空间效应
冠梁
影响长度
double-row
spatial effect
crown beam
affecting length
