输电塔、螺旋锚基础、土体系相互作用下的可靠度分析

Reliability Analysis of Transmission Tower, Screw Anchors and Soil Interaction System

依据两种不同的计算输电塔、螺旋锚基础、土体系相互作用的简化计算模型,用有限元原理分析了风荷载作用下计算模型不同时对相互作用下体系可靠度的影响:考虑相互作用时,主要失效路径并无不同,失效概率增大;不同的计算模型对相互作用下的可靠度有影响。

By analyzing the different calculation models affecting on the reliability of interaction system, some main failure modes and their failure probability under different conditional system were provided based on two kind of the simplified calculation models of the transmission tower, screw anchors and soil interaction system using a FEM computer program to analyze one concrete transmission tower loaded by wind. The results reflected that the main failure path did not change and failure probability increased compared with those of system neglected interaction. Different calculation models had distinct effects on the probability of interaction system.