Hinged rectangular-pipe assembled buckling restrained brace with end rotation limiting function

Abstract

The invention relates to a hinged rectangular-pipe assembled buckling restrained brace with an end rotation limiting function and belongs to the field of structural engineering. The rectangular-pipe assembled buckling restrained brace comprises an I-shaped core member, restrained rectangular steel pipes, vulcanite, steel base plates and high-strength bolts. The core member is a flat steel plate with low strength and high ductility, the vulcanite is adhered on the surface of an area wrapped by a restraining member, the high-strength bolts penetrates bolt holes on the restraining member and the steel base plates, and the two restrained rectangular steel pipes are integrated to form a peripheral restraining member by applying pretension force of the bolts. Four reinforcing benches are respectively welded on end plates. Each reinforcing bench is composed of a bench cover plate and two bench rib plates, wherein the bench cover plate tightly clings to the peripheral restraining member of the buckling restrained brace and reserves a gap with the same. Two hinge joints are provided and are welded by the end plates and lug plates. The peripheral restraining member can effectively limit end rotation angles of hinged rectangular-pipe assembled buckling restrained brace, so that the peripheral restraining member generates a reverse bending moment action.

Description

technical field [0001] The patent relates to a hinged rectangular tube assembly type anti-buckling support that restricts end rotation, and belongs to the technical field of structural engineering. Background technique [0002] Buckling-resistant bracing members are generally composed of two parts: the inner core member and the outer restraint member. After the Northridge earthquake in the United States in 1994 and the Kobe earthquake in Japan in 1995, engineers began to realize that buckling-resistant bracing members had an excellent effect on energy dissipation and shock absorption, and a large number of engineering practices began in Japan and the United States. Because buckling-resistant bracing members have the dual functions of "energy dissipation" and "supporting", in areas with high seismic fortification intensity, buckling-resistant bracing members are considered to be one of the best energy-dissipating and shock-absorbing members. my country's high-rise buildings h...

AI Technical Summary

Problems solved by technology

[0004] The commonly used reinforced concrete peripheral constrained section and steel and concrete combined peripheral constrained section mainly have the following disadvantages: (1) The manufacturing precision of this type of component is high, resulting in increased manufacturing costs, especially when pouring concrete, no matter what kind of delicate Formwork materials and support methods are difficult to guarantee the reserved precision requirements between the inner core and the periphery; (2) Wet operations such as pouring concrete have affected the production and construction, and its precision control is difficult; (3) The coating is in The isolation material on the surface of the core component is mostly epoxy resin, which has a single variety, and its durability is poor, and it is easy to detach from the surface of the core

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