基于输电塔地震响应的数值方法精度可靠性研究  

Study on Reliability of Accuracy of Numerical Method Based on Seismic Response of Transmission Tower

作　　者：张晓志[1] 曹玲[1] 刘龙江[1] 胡晓炜[1] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012

出　　处：《水电能源科学》2013年第7期200-202,共3页Water Resources and Power

基　　金：东北电力大学博士科研启动基金资助项目(BSJXM-200713)

摘　　要：针对使用ANSYS软件进行结构动力分析时大多仅关心计算结果的收敛性而忽视计算结果的精度问题,采用ANSYS软件中PJ和HHT两种数值求解方法,选取合适的积分步长,对输电塔模型在地震荷载作用下的动力响应进行了数值模拟,通过对比分析数值模拟结果的相对误差,发现积分步长为Δt≤0.010Tmax、Δt≤0.018Tmax时可作为PJ、HHT方法的精度控制准则,HHT方法的计算精度高于PJ方法。When ANSYS software is used to analyze structural dynamics, it is always concerned with the convergence of calculation results and ignoring the accuracy. By selecting the appropriate integral step, the PJ and HHT numerical methods in ANSYS software are adopted to simulate the dynamic response of transmission tower model under action of seismic load. And then the relative error of numerical simulation results is compared. It is found that integral step At~ ≤0.010Tmax△t≤0.018Tmaxand can he used as the criterion of accuracy control for PJ and HHT methods; the calculation accuracy of HHT method is higher than that of the PJ method.

关 键 词：输电塔 动力响应 数值积分方法 积分步长 精度 

分 类 号：TM753[电气工程—电力系统及自动化] P315[天文地球—地震学]