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A Casing-Restrained Buckling-Resistant Brace with Symmetrical Initial Defects

An anti-buckling support and defect technology, applied in the direction of earthquake resistance, building components, building types, etc., can solve the problems of poor hysteresis performance, achieve the dissipation of seismic energy, solve the problem of large force on components or nodes, and good promotion benefits Effect

Active Publication Date: 2018-03-16
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the hysteretic performance of ordinary supports is poor under repeated loads.

Method used

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  • A Casing-Restrained Buckling-Resistant Brace with Symmetrical Initial Defects
  • A Casing-Restrained Buckling-Resistant Brace with Symmetrical Initial Defects
  • A Casing-Restrained Buckling-Resistant Brace with Symmetrical Initial Defects

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Experimental program
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] figure 1 It is a structural schematic diagram of the present invention, which is composed of an end restraint section 1 , a buckling section 2 and a casing 3 . The end restraint section 1 is fixed between the beam-column node and the buckling section 2, and the sleeve 3 is fixed outside the buckling section 2 by grouting concrete material.

[0024] Such as figure 2 As shown, the end restraint section 1 is composed of a square steel plate 4, a T-shaped short steel beam 5, and a connecting plate 6 reserved for components such as beams and columns. The square steel plate 4 is welded to the end of the buckling section 2. Two T-shaped short steel beams 5 is welded to the square steel plate 4, see square steel plate 4 and T-shaped short steel beam 5 respectively Figure 5 , 6 shown. The connecting plate 6 is sandwiched between two T-shaped short steel beams 5, a...

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Abstract

The invention discloses a casing pipe constraint buckling prevention support with symmetrical initial defects. The casing pipe constraint buckling prevention support with the symmetrical initial defects is characterized by being composed of end portion constraint sections, buckling sections and a casing pipe; and the two ends are connected with beam and column members or nodes to form a whole through bolts, so that the purpose of increasing the lateral rigidity resistance of the members is achieved. The casing pipe constraint buckling prevention support with the symmetrical initial defects keeps elasticity under the small earthquake effect, the buckling sections enter the buckling stage under the medium earthquake or major earthquake effect, and the good hysteretic dissipative energy can also achieve the effect of a damper. The casing pipe constraint buckling prevention support with the symmetrical initial defects can be prefabricated in a factory, the quality of the members is ensured, the workload of on-site construction work is reduced, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a casing-constrained anti-buckling support with symmetrical initial defects, which is suitable for steel structures or concrete structures with buckling-constrained supports. Background technique [0002] During the use of steel structures or reinforced concrete structures, ordinary supports will buckle under compression. When the supports buckle under compression, the stiffness and bearing capacity will decrease sharply. Under the action of earthquake or wind, the internal force of the support changes back and forth under the two states of compression and tension. When the support gradually changes from the buckling state to the tension state, the internal force and stiffness of the support are close to zero. Therefore, the hysteretic performance of ordinary supports is poor under repeated loads. In order to solve the problem of buckling under compressi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/021
Inventor 蔡建国周宇航柳杨青冯健章玉婷
Owner SOUTHEAST UNIV
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