Buckling restrained brace outrigger truss and composite shock absorption high-rise structure system

Abstract

The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a buckling restrained brace outrigger truss and a composite shock absorption high-rise structure system. The buckling restrained brace outrigger truss is connected between an inner barrel and an outer barrel. Diagonal web members are non-yielding bearing type first buckling restrained braces and yielding energy dissipation type second buckling restrained braces which are arranged side by side, a multiple displacement and amplification type viscous energy dissipationmechanism comprises a cantilever truss, a toggle dual connecting rod and a viscous damper, and a composite shock absorption high-rise structure system is formed through combined application of the buckling restrained brace outrigger truss and the multiple displacement and amplification type viscous energy dissipation mechanism. The outrigger truss and the energy dissipation mechanism work cooperatively, energy consumption and rigidity mechanisms are diversified and coordinated, the shock absorption effect is obvious and effective, multiple fortification defense lines of the high-rise structurecan be achieved, the structure is simple, construction is convenient, and building space usability and economical performance are good.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption of building structures, in particular to a buckling-constrained support outrigger truss and a composite shock-absorbing high-rise structure system. Background technique [0002] The frame-core tube structure and tube-in-tube structure commonly used in high-rise buildings have good seismic performance and building space. By setting outrigger trusses with higher rigidity in the frame-core tube structure and the tube-in-tube structure, the lateral stiffness of the structure can be significantly improved, and the lateral deformation of the structure under wind load and earthquake can be reduced. Stiffness easily leads to the existence of weak layers. Therefore, "Code for Seismic Design of Buildings" (GB50011-2010) recommends the method of using multi-storey outriggers with relatively small stiffness dispersed and evenly distributed along the building height direction, ...

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Problems solved by technology

[0005] In order to solve the above problems, the object of the present invention is to provide a buckling-constrained supporting outrigger truss. The stiffness and bearing capacity of the buckling-constrained supporting outrigger truss of the present invention can ensure the performance requirements of the structure in different working stages, especially It solves the problem of excessive structural deformation caused by too fast reduction of structural stiffness under large earthquakes; the buckling-constrained support outrigger truss of the present invention can obviously and effectively amplify the deformation of the damper, and can effectively increase the whole process without increasing the structural stiffness. The energy dissipation capacity of the structure improves the shock absorption effect of the structure; the closed composite shock absorption high-rise structure system of the present invention has various and coordinated energy consumption mechanisms, and the shock absorption (vibration) effect is obvious and effective, and can realize multiple fortification lines of high-rise structures, The structure is simple, the construction is convenient, and the usability and economy of the building space are good

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