输电塔Pushover分析的侧向力分布模式选取研究  

Selection of lateral load patterns for Pushover analysis of transmission tower

作　　者：张伟[1,2] 周强[1,2] 马智勇[1,2] 赵玉峰[1,2] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]工程防灾与结构安全教育部重点实验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2016年第6期1764-1771,共8页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51469004);广西自然科学基金重大项目(2012GXNSFEA053002)

摘　　要：为有效地采用Pushover分析获得输电塔架的抗震性态指标,针对该类结构Pushover分析的侧向力分布模式选取开展了研究。首先根据塔架抗震性态指标确定侧向力分布模式合理性选取准则,然后根据规则化后的代表性地震波进行了不同地震动强度下的塔架非线性时程分析,并与4种常用侧向力分布的Pushover分析结果进行对比,进而根据塔架关键点位移和塔腿主材应力的一致性分析,对比研究了各侧向力分布模式的适用性,建议输电塔结构Pushover分析中采用多振型和倒三角两种侧向力分布模式。In order to effectively obtain the seismic performance index of transmission tower by using Pushover analysis,suitable lateral load patterns for this structure are studied. The selection principle for acceptable lateral load patterns is proposed according to the seismic performance index of transmission tower. The Pushover analysis results with four commonly used lateral load patterns are compared with those given by nonlinear dynamic analysis,in which some regularized earthquake acceleration histories are used. The applicability and generality of the lateral load patterns are investigated based on the consistency of the results of the aforementioned two methods. Multi-mode distribution load pattern and triangle distribution load pattern are then suggested for pushover analysis of transmission tower.

关 键 词：输电塔 PUSHOVER分析 侧向力分布模式 选取准则 

分 类 号：TU279.7[建筑科学—建筑设计及理论] P315.9[天文地球—地震学]