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结构失效模式对应结构整体抗震能力,结构失效时所对应的最小地震作用作为结构的整体抗震能力。通过推覆分析(Pushover)找到结构的失效模式,从而为布置失效填充墙提供信息,通过布置失效填充墙,可改变并消除原有结构的最弱失效模式,从而提高结构的整体抗震能力;通过增量动力时程分析,可最终确定失效填充墙的最佳布置方案及结构的整体抗震能力指标,但填充墙的大量破坏会影响到结构的使用功能。通过在梁下部和填充墙顶部之间布置铅阻尼器既可有效地保护失效填充墙,又能使结构的整体抗震能力得以提高。算例说明了本文提出的分析方法的先进性和可行性,研究结果表明,考虑失效填充墙的作用能够使结构的整体抗震能力得到提高,铅阻尼器能够使失效填充墙的破坏得到有效控制。
The structural failure mode corresponds to the overall seismic capacity of the structure, and the minimum seismic response corresponding to the structural failure as the overall seismic capacity of the structure. Through the Pushover to find the failure mode of the structure to provide information for the layout of the failed infill walls. By disposing the failed infill walls, the weakest failure mode of the original structure can be changed and eliminated to improve the overall seismic capacity of the structure; Incremental dynamic time history analysis can finally determine the best layout of the failed wall and the overall seismic capacity of the structure, but a large number of damage to the infilled wall will affect the function of the structure. By placing lead dampers between the lower part of the beam and the top of the infill wall, both the failed wall can be effectively protected and the overall seismic capacity of the structure can be improved. The example illustrates the advancedness and feasibility of the analytical method proposed in this paper. The results show that considering the effect of the failed infill walls, the overall seismic capacity of the structure can be improved, and the lead damper can effectively control the failure of the infilled walls.