Buckling-restrained brace member consisting of four bound angle steels

Abstract

The invention discloses a buckling-restrained brace member consisting of four bound angle steels, which consists of a cross core member and a peripheral restrain member, wherein the cross core member is formed by welding three flat steel plates, and hard rubber is glued on the surface of the cross core member; the peripheral restrain member consists of four bound angle steels; the binding function is realized by connecting branch end parts of the angle steels through a high-strength bolt; and the high-strength bolt passes through bolt holes on the branch end parts of the angle steels, steel base plates arranged between the steel angels and a plurality of rubber gaskets to connect the four steel angels into a whole. The thickness of the steel base plates is greater than that of the plates of the cross core member, and a clearance of 1 to 2mm is kept between the surface of the angel steels and the surface of the cross core member under the pretightening force of the high-strength bolt by adjusting the thickness of the rubber gaskets, and is filled with the hard rubber glued on the surface of the cross core member so as to meet the requirement of expansion of the stressed cross core member.

Description

technical field [0001] The invention relates to a novel anti-buckling support member, which belongs to the technical field of structural engineering. technical background [0002] The anti-buckling brace is a new type of lateral force-resistant member, which has the function of energy dissipation and shock absorption in the anti-seismic design of structures. Under the action of small earthquakes, the anti-buckling support members maintain elasticity and provide sufficient lateral stiffness for the main structure; under the action of moderate earthquakes and large earthquakes, the inner core members of the anti-buckling support members first enter into yield and protect the main frame role, and consume a large amount of seismic input energy. After the Hanshin earthquake in Japan and the Northridge earthquake in the United States, buckling-resistant brace members have been rapidly popularized and applied in the United States, Japan and other earthquake-prone developed countri...

AI Technical Summary

Problems solved by technology

[0004] The commonly used reinforced concrete peripheral constrained section and steel and concrete composite peripheral constrained section mainly have the following disadvantages: First, the manufacturing precision of this type of member is high, which leads to an increase in manufacturing cost, especially when pouring concrete, it is difficult to ensure that the inner core member and The reserved gaps between the peripheral constraining components meet the accuracy requirements; secondly, wet operations such as pouring concrete have affected the production and construction, and its precision control is difficult; thirdly, the isolation materials painted on the surface of the inner core components are mostly Epoxy resin is used, the variety is single, its durability is poor, and it is easy to detach from the surface of the inner core

The author has also proposed an all-steel fabricated anti-buckling support member [200910081817.5], which uses four channel-shaped hot-rolled section steels to bind together to restrain a "one"-shaped core member. However, due to the small area of ​​the core member, the yield load Limited, it cannot meet the requirements of cross-section types and super large support force that are increasingly needed in engineering

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