输电塔Pushover分析的侧向力分布模式选取研究

发布时间：2019-06-18 20:24

【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。
[Abstract]:In order to obtain the seismic behavior index of transmission tower effectively by Pushover analysis, the selection of lateral force distribution mode of Pushover analysis of this kind of structure is studied. Firstly, the reasonable selection criterion of lateral force distribution mode is determined according to the seismic behavior index of tower, and then the nonlinear time history analysis of tower under different ground motion intensity is carried out according to the regular representative seismic wave, and the results are compared with the Pushover analysis results of four commonly used lateral force distribution, and then the applicability of each lateral force distribution model is compared and studied according to the consistency analysis of the displacement of key points of tower and the stress of main material of tower leg. It is suggested that two lateral force distribution modes, multi-mode and inverted triangle, should be adopted in Pushover analysis of transmission tower structure.
【作者单位】：广西大学土木建筑工程学院;工程防灾与结构安全教育部重点实验室;
【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)
【分类号】：TU352.1

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