THE SEISMIC PERFORMANCE OF 750kV GANTRY BY NONLINEAR TIME HISTORY ANALYSIS
The 750 kV gantry is one of the most core structure of substation engineering in the northwest regions of China.Using finite element analysis software SAP2000,the seismic performance of the 750 kV gantry in the seismic fortification intensity zone of 8 degrees is analyzed by the nonlinear time history method.The research result shows that the overall seismic performance of the 750 kV gantry reaches performance requirements,and the main members of the frame beams and columns meet the requirements of seismic bearing capacity,whereas some column web mem-bers have exceeded the limit in stress ratio under rare earthquake.To enhance the seismic performance of the 750 kV gantry,increasing the cross-section of the members is suggested as the strengthening measure.
stress of column web memberhigh seismic intensity zonenonlinear time history method750 kV gantry
NETL
NSTL
万方数据
