基于FLAC/Slope模拟分析输电线路塔位边坡的开挖稳定性  

Simulation Analysis on Excavating Stabilization of Tower-Base-Slope in Transmission Lines Based on FLAC/Slope Software

作　　者：曾二贤[1] 舒爱强[1] 廖文炜[1] 

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《电网与清洁能源》2011年第4期14-18,共5页Power System and Clean Energy

基　　金：中国电力工程顾问集团中南电力设计院科技项目(40-E2010-0204T)

摘　　要：塔位边坡的稳定性是输电线路基础设计考虑的一项重要内容。基于强度折减理论采用FLAC/Slope软件建立了输电线路典型塔位边坡的有限元分析模型,数值模拟了塔位边坡分步开挖施工过程,对各施工阶段的稳定性进行了评价分析,特别考虑了边坡稳定系数随边坡开挖步的变化规律。结果表明塔位边坡的坡脚或坡体分层处存在较大应力集中,且施工开挖步是影响边坡稳定系数变化的重要因素。Stability analysis of the tower foundation slope is an important part in designing the underlying base of the transmission tower. Based on the theory of soil strength reduction, this paper builds the FEA models for typical tower- base-slopes of transmission lines with the excavation progress of the slope simulated and the stability analyzed, and with special consideration given to the changing the slope stability factor with each excavation step.

关 键 词：输电线路 塔位边坡 开挖稳定 FLAC/Slope 数值模拟 

分 类 号：TU470[建筑科学—结构工程] U416.1[建筑科学—土工工程]