Experimental study and finite element analysis on seismic performance of wooden mortise-tenon joints before and after reinforcement

Firstly, the test for six mortise-tenon joints under pseudo-static load is made to study the seismic performances of the joints. Then, the specimens used in the test are reinforced by cramp, carbon fiber, steel pegs, U-flat iron angle bar, angle steel and curved soft steel plate, respectively. The comparisons between the seismic performance parameters of specimens before and after reinforcement are carried out. The test results demonstrate that the seismic performance level of a joint after reinforcement can reach that of the specimen before damaged, but the reinforcement effect of the joints reinforced by angle steel and curved soft steel plate is more obvious. For the case using the curved soft steel plate, the finite element software ABAQUS is used to simulate the seismic performance of the joints. The parameterized analyses have been made, which provide a theoretical basis for the reinforcement design of joints.