Research On The Seismic Performance Of Bi-directional Corrugated Steel Shear Walls Under Different Corrugation Angles

With the further advancement of China’s urbanization to high quality development,the requirements for structural lateral force resistance design of urban high-rise buildings are getting higher and higher.Corrugated steel plate shear wall as a new lateral force resistant structure applied to high-rise structures,when an earthquake occurs,not only can provide lateral force resistance,but also can play a role in seismic energy dissipation.In this paper,the seismic mechanical properties of two-way corrugated steel plate shear walls are studied,and six sets of corrugation angles are designed: 0°-0°,30°-30°,45°-45°,60°-60°,90°-90° and 90°-0°.The two-way corrugated steel plate shear walls are single-span unidirectional,with one-way corrugated steel plates placed parallel to each other at the front and rear,and corrugation angles0°-0° and 90°-90° placed parallel to each other The corrugation angles of 30°-30°,45°-45°,60°-60° and 90°-0° are placed crosswise,the structural parameters of corrugation spacing are taken as 180 mm and 200 mm,the height of corrugation is taken as 35 mm and 50 mm,the width to height ratio is taken as 1 and 2,the thickness of corrugated steel plate is taken as 3mm and5 mm,and the total number of two-way corrugated steel plate shear wall models is 96.Firstly,the two-way corrugated steel plate shear wall model is established in the finite element software ABAQUS according to the parameters in the available literature,and the tests in the literature are verified to determine the correctness of the selected parameters and the modeling method.Secondly,the seismic performance of the two-way corrugated steel plate shear walls with corrugation angles of 0°-0°,30°-30°,45°-45°,60°-60°,90°-90° and 90°-0° was studied to analyze the load bearing capacity change at initial loading,hysteresis curves,load bearing capacity degradation,energy dissipation coefficient,damage pattern and out-of-plane deformation of the two-way corrugated steel plate shear walls under monotonic load and reciprocal load.Compared with the rest of the corrugation angles,the two-way corrugated steel plate shear wall with corrugation angle of 90°-90° has the best seismic performance.Finally,the corrugation angles 0°-0°,30°-30°,45°-45°,60°-60°,90°-90° and 90°-0° twoway corrugated steel plate shear walls are studied by parameter analysis,and the corrugated steel plate parameters corrugation spacing,wave height,width-to-height ratio and corrugated steel plate thickness are analyzed on the hysteresis curves of two-way corrugated steel plate shear walls under different corrugation angles,bearing capacity degradation and energy consumption coefficient,it can be concluded that:(1)The corrugated steel plate wave height and width to height ratio have a greater effect on the hysteresis performance,energy dissipation coefficient and load bearing capacity degradation of two-way corrugated steel plate shear walls.(2)The corrugation spacing of corrugated steel plate has less influence on the hysteresis performance,energy dissipation coefficient and load bearing capacity degradation of two-way corrugated steel plate shear.(3)The increase of corrugated steel plate thickness from 3mm to 5mm has more influence on the hysteresis performance of two-way corrugated steel plate shear,and less influence on energy dissipation coefficient and load bearing capacity degradation.