The Seismic Behavior Of Steel-Beam-to-Concrete-Wall Joints In Steel-Concrete Hybrid Structures

Nowadays, with the development of the tall buildings, the hybrid structures are more and more applied to the high-rise building and the super-high building. It bring different materials character and different structures behavior and multiple structure's synthetic behavior after mixed reasonably and orderly into play. The hybrid structures have many kinds of structure modes, and the steel-RC Hybrid Wall System is one of the important modes. This system applies reinforced concrete tube or wall with steel frame of rigid or hinge, the reinforced concrete tube or wall with strong lateral stiffness undertake lateral load chiefly and the steel frame with strong material strength undertake vertical load chiefly. Meanwhile, we can make long-span floor by smart of steel frame, it takes full advantages of merits of steel structures and concrete structures and turns the steel and concrete behaviors to better, it has many advantages, such as small section, strong capacity, good seismic behavior, convenient construction and so on.. In addition, it overcomes the steel shortcomings that bad behaviors of antisepticise, rust prevention and fire prevention, and is apt to local buckling and overall buckling, the structures have strong lateral stiffness and save steel and reduce cost, this structures are applied to more and more practical projects, and also to high intensity seismic zone owing to its excellent seismic behaviors.Joint is a important part of the structures. Steel-RC Hybrid Wall System mainly includes two kind: Beam-column joint and beam-wall joint. Every kind also has many specific types in according to its mode of construction. The design and calculation of joint is one of the capital problems in structure's design and calculation. Because the reliable and safe joint is premise of structure's normal work. Therefore, it is very meaningful to research joint.It is a few seismic researches on steel-concrete hybrid structure in interior of country and overseas. At present, the research on joint mainly focuses on beam-column joint, and less on beam-wall joint. The codes in our country -Technical Specification for Steel Concrete Composite Construction (JGJ138-2001) and Technical Specification for Concrete structures of Tall Building (23JGJ3-2002) provide a few construction practices for beam-wall joint.This text introduces briefly steel concrete hybrid structures characters, development history, fundamental type and analytic method of the text-principles of nonlinear finite element method and related knowledge of ANSYS. The text mainly studies the seismic behaviors of steel concealed columns, beam-wall, internal joints in steel beam-shear wall Base on the related documents of home and overseas extensively, using finite element method, reasonable choosing modal and constitutive relation of material, make related parameter, it does nonlinear finite element analysis for joints under reversed cyclic loading and research stress distribution, failure pattern, tress transfer mechanism and hysteretic behavior of this joints, that provides beneficial theoretic basis for projects with this hybrid structure.