Research on load-bearing performance of post-reinforced raft-shaped steel through-wall connection joints in masonry structures
Aiming at the problem of adding raft slabs after the existing masonry structure to strengthen the foundation,a joint of section steel through the wall is proposed,and the static load scale model test is carried out to analyze the shear resistance and bending resistance of the joint,and the shear bearing capacity calculation formula conforming to the force mechanism of the steel joint is proposed.On this basis,Abaqus software is used to establish the joint finite element model with different design parameters.The comparison shows that the height of the section steel and the thickness of the wall have a great influence on the shear bearing capacity of the joint,and the height of the section steel and the thickness of the rear added raft have a great influence on the bending bearing capacity of the joint.The section steel through-wall connection joints are convenient in construction and reliable in force transmission,which significantly improves the mechanical properties of the joints.The post-incremented rafts will not be damaged before the brick walls in the actual force-bearing process,which can provide a reference for the foundation reinforcement of the masonry structure.
masonry structurerear supplement raftjoint bearing performancefinite element analysis
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