阻尼填充墙优化布置对不规则框架结构抗震性能的影响

在不规则结构中,填充墙的表现对框架结构的局部以及整体抗震性能的表现显得非常重要。随着阻尼填充墙的深入研究,大大提高了框架填充墙结构的抗震性能。但由于阻尼填充墙施工工艺复杂、施工成本较高,很难得以大规模使用。为了实现既降低施工的难度和成本又提高框架结构的抗震性能,本文选取一座不规则框架结构对其地震表现进行分析。采用局部优化布置阻尼填充墙的方法,达到既提高结构抗震性能又降低施工难度和成本的要求,为框架填充墙结构的设计提供一定的建议。

Optimized Layout of Damping Infill Walls and Its Effect on theSeismic Behavior of Irregular Frame Structures

The performance of infilled walls is very important in the local and global seismic performance of irregular frame structures. Continuous research on damping infill walls has greatly improved the seismic performance of infilled frames. However, complex construction technologies and high construction costs have rendered the large-scale use of this type of structure impractical. To reduce the difficulty and cost of construction and improve the seismic performance of the resulting frame structure, the anti-seismic performance of a damped infill wall in an irregular frame is studied. Considering the characteristics of an irregular frame structure, the damping infill wall is arranged in a variety of ways, and these layouts are compared via analyses of mode type, energy dissipation, and component utilization. Damping infill walls with better damping effects can be obtained when it is arranged in the position of each mode type. The utilization ratio of the structure changes when the damping infill wall is arranged around the member, and the energy consumption of the damping infill wall increases. This paper also proposes an optimal layout strategy of damping infill walls in irregular frame structures. Optimization of the local arrangement of damping infill walls is used to improve the seismic performance and reduce the construction difficulty and cost requirements of the final structures. This work provides some suggestions for the design of infilled frame structures.