预制装配式混凝土框架结构金属消能减震连接体系抗震性能分析研究

Seismic Performance Study on Connection System of Prefabricated Concrete Structure with Metallic Damper

基于预制装配式混凝土框架结构梁柱节点施工困难,提出了新型预制装配式混凝土框架结构金属消能减震连接体系,为了研究该体系的抗震性能及减震效果,对消能减震连接体系和现浇框架进行了数值仿真分析,分析了消能器不同设计参数对该体系抗震性能的影响。分析结果表明:金属消能减震连接体系的抗震性能略优于现浇框架结构;该体系的抗震性能随阻尼器总高度和翼缘板厚度的增加而提高;腹板厚度对结构的抗震性能几乎没有影响;阻尼器不同材料强度对结构抗震性能有一定的影响。

Considering the construction difficulty of beam-column joints of prefabricated concrete structure,a new connection system of prefabricated concrete structure with metallic damper is presented in this paper. In order to learn the seismic performance and damping effect of the system,the numerical simulation of prefabricated concrete structure with metallic damper and cast-in-situ concrete frame is done. Then the influence under different design parameters of metallic damper is analyzed. It is shown that the seismic performance of prefabricated concrete structure with metallic damper is slightly superior to that of cast-in-situ concrete frame. The seismic performance of specimen improves with the increasing total height and flange plate thickness of damper,while web thickness do almost no effect on that. Different material of damper has some effect on seismic performance of specimen.