Quasi-Static Test on Steel Frame with Infilled Wallboard in New Connection Method
In order to study the seismic cooperative performance and failure mechanism of the infilled wallboard and steel frame structure based on the new connection method,quasi-static tests were carried out under three working conditions,including the new connection method infilled wallboard steel frame specimen,the traditional L-shaped clamp connection infilled wallboard steel frame and the wallboard free steel frame.The differences of the seismic performance indicators,such as failure mode,hysteresis curve,skeleton curve and stiffness degradation curve,were compared among the three specimens.The results show that the infilled wallboard can improve the ultimate bearing capacity and energy dissipation capacity of the steel frame.The seismic bearing capacity of the traditional L-shaped fastener connected wallboard steel frame is 1.34 times of that of the pure frame,and the seismic bearing capacity of the new connection method wallboard steel frame is 1.42 times of that of the traditionally connected frame.When the loading displacement reaches 12 mm(the inter-story drift is 1/133),the middle wallboard of the specimen with traditional connection is seriously damaged and has reached the concrete limit strain,while the middle wallboard of the specimen with new connection is still in working state without obvious damage.The new connection dissipates energy through the slipping of the connectors at the connection nodes,which can delay the cracking of the wallboard,reduce the damage degree of the wallboard and improve the energy dissipation reserve of the infilled wallboard steel frame under large earthquakes.
new connection methodinfilled wallboardsteel frame structurequasi-static testseismic performance
国家科技期刊平台
NSTL
万方数据
