考虑屈曲约束支撑的±1100kV阀厅抗震性能化设计研究

Research on the Seismic Performance Design of±1100kV Valve Hall Considering Buckling Restrained Brace

以国家重点工程昌吉—古泉±1100 kV输电工程古泉换流站高端阀厅为研究对象,结合重要电力设施的抗震要求,提出±1100 kV阀厅在不同重现期地震作用下的抗震性能目标。同时通过对比普通钢支撑、加强的普通钢支撑以及屈曲约束支撑三种钢结构支撑构件在8度(0.30g)多遇地震及罕遇地震下的抗震性能及其经济指标,得出±1100 kV阀厅采用屈曲约束支撑作为钢结构支撑构件,在实现抗震性能目标的同时经济指标优良。

In this paper,the high voltage valve hall in the Guquan converter station of Changji-Guquan±1100 kV transmission project is taking as the research object.Combined with the seismic requirements of important electric power facilities,the seismic performance objectives of±1100 kV valve hall under different return periods of earthquake are proposed.At the same time,by comparing the seismic performance and economic indicator of three kinds of lateral force resisting members,including:ordinary steel brace,strengthened ordinary steel brace and buckling restrained brace under 8 degree(0.30g)frequent earthquake and rare earthquake,it is concluded that buckling restrained support as the lateral force resisting component of±1100 kV valve hall can achieve the seismic performance goal and also have excellent economic indicator.