The Softened-Truss Model of Low-rise RC Shear Wall with Concealed Truss

In order to improve the seismic performance of the low-rise RC shear wall,the idea of the low-rise RC shear wall with concealed truss was put forward.Cyclic loading tests of the low-rise RC walls with concealed truss were carried out.Based on the experiment and the existing softened-truss model,the softenedtruss model of shear wall with concealed truss was proposed.The new model considered that the inclination of the concrete crack was vertical to principal stress direction determined by external stress at early cracking,and was led by the concealed truss throughout its postcracking loading history.The results of calculation coincided with the test well.