Anti-buckling supporting member with lattice type three-circular-pipe cross section

Abstract

An anti-buckling supporting member provided with a lattice type three-circular-pipe cross section comprises three anti-buckling branches which are connected through batten pieces of inclined batten pipes, transverse batten pipes and the like as well as end ribbed plates, wherein each anti-buckling branch adopts an anti-buckling supporting member provided with a linear core and a concrete-filled restraint circular steel pipe; the three anti-buckling branches have the same sizes, are parallelly arranged to form a regular-triangle cross section, and are connected through the transverse batten pipes and the inclined batten pipes to form a lattice type member; and the transverse batten pipes and the inclined batten pipes are connected with the constraint circular steel pipes of the anti-buckling branches through intersecting weld. End parts of the linear core members of the three anti-buckling branches extend out of the circumferential constraint circular steel pipes, a ribbed plate is vertically welded at the externally extending section of each core, and the three ribbed plates are interested to the center of the regular triangle and welded to be a whole, so that end nodes of the anti-buckling supporting member are formed. The lattice type cross section facilitates improvement of the bearing efficiency of the anti-buckling supporting member, can remarkably reduce the weight of the member, and meets the design requirement of large-tonnage and ultra-long anti-buckling support in structures of a giant frame and the like.

Description

technical field [0001] The invention relates to a novel buckling-resistant energy-dissipating support member, which belongs to the technical field of structural engineering. technical background [0002] Buckling-resistant bracing members are energy-dissipating and shock-absorbing members with superior performance. They are suitable for high-rise or middle-low-rise frame structures in areas with high seismic fortification intensity, and can also be applied to long-span structures such as grid shells or bridge structures. Since the 1990s, anti-buckling bracing members have been widely and rapidly popularized and applied in developed countries such as the United States and Japan, and have broad development and application prospects. [0003] The anti-buckling support member is composed of two parts: the inner core and the outer restraint member: the inner core is generally made of steel with a low yield point, which directly bears the axial load; the outer restraint member doe...

AI Technical Summary

Problems solved by technology

If the traditional buckling-resistant bracing member with integral section is still used, its self-weight will double, which not only increases the difficulty and cost of processing, transportation and installation of the buckling-resistant bracing member, but also increases the seismic action of the structure

In addition, due to eccentric installation or rigid connection of nodes, the buckling-resistant support members will bear a certain additional bending moment, resulting in premature failure, and the inner core cannot fully exert its yield energy dissipation capacity

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