Core-replaceable partial filling type double-sleeve buckling-preventing support

Abstract

The invention provides a partial filling type double-sleeve buckling-preventing support. The core-replaceable partial filling type double-sleeve buckling-preventing support can consume a large amount of earthquake input energy, reduces the damage to the structure under rare occurrence earthquakes, connects energy consuming cores and a node elastic region through a detachable bolted connection method, can also achieve post-earthquake replacement of the energy consuming core, reuses a restraint unit, and lowers repairing and replacement cost. The core-replaceable partial filling type double-sleeve buckling-preventing support at least comprises (1) the linear type energy consuming cores, (2) an internal steel sleeve restraining the linear type energy consuming core from partially buckling, (3) an external steel sleeve guaranteeing the overall stability of the support, (4) concrete filler between the internal steel sleeve and the external steel sleeve, (5) supporting node stiffening plates, (6) bolt connecting plates and bolts between the energy consuming cores and the supporting node stiffening plates, and (7) steel channel stiffening ribs. The core-replaceable partial filling type double-sleeve buckling-preventing support is convenient to support and is designed flexibly, the internal steel sleeve mainly prevents the linear type energy consuming cores from partial buckling and damage, the outer steel sleeve and the concrete filler mainly prevent the entire support from buckling failure, and the function of the internal steel sleeve and the function of the external steel sleeve are relatively independent. The core-replaceable partial filling type double-sleeve buckling-preventing support has the advantages of being low in machining cost, light in self-weight, good in economic benefit, convenient to construct and the like.

Description

(1) Technical field [0001] The invention relates to the technical field of anti-seismic and disaster prevention of building structures, belongs to the category of passive control of structural anti-seismic, and specifically relates to a double-sleeve anti-buckling support that can be easily replaced after an earthquake with an energy-dissipating core and only partially filled and constrained, which can be used in building structures Resist horizontal earthquake action, improve the structure's anti-seismic performance, and have light weight, and the peripheral restraint units can be recharged and reused, which greatly reduces the cost. (2) Background technology [0002] my country is an earthquake-prone area, and earthquake disasters are inevitable, which will pose a huge threat to people's life and property safety. Even if the building structure does not collapse in a strong earthquake, it will suffer great damage, which will affect the normal use after the earthquake. From...

AI Technical Summary

Problems solved by technology

Concrete-filled steel tube anti-buckling support can greatly reduce the amount of steel used for the support due to the use of the flexural stiffness of the inner concrete, but the self-weight of the support will increase. For the case of large length and tonnage, it will cause difficulties in hoisting and large deflection. Large and other cases; although the pure steel anti-buckling brace has light weight and fast processing speed, it inevitably increases the amount of steel and the appearance size of the brace because it only relies on the bending stiffness of the steel sleeve to prevent its instability and damage. The cost will increase accordingly

[0005] In addition, the current anti-buckling braces are rarely reusable. Usually, after an earthquake occurs, the energy-dissipating core of the buckling-resistant braces will be damaged and cannot be used any longer and needs to be replaced.

It would be a lot of waste to replace the entire buckling brace

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