A buckling-resistant brace arranged crosswise, a building with the brace and its application

Abstract

The invention relates to a buckling-restrained brace arranged in a cross mode, a building with the buckling-restrained brace and application. The buckling-restrained brace arranged in the cross mode mainly comprises a first stress component and a second stress component. The first stress component and the second stress component are each provided with a stress main pipe. The middle section of each stress main pipe is provided with a protruding part. The inner side of the protruding part of each stress main pipe is fixedly connected with an inner restraining casing pipe, and the outer side of the protruding part of each stress main pipe is fixedly connected with an outer restraining casing pipe. The protruding parts of the two stress main pipes are fixedly connected to form an X-shaped structure. According to the buckling-restrained brace arranged in the cross mode, the building with the buckling-restrained brace and the application, the cross-sectional area and the length of the protruding parts of the stress main pipes can be adjusted, the ratio of the strength to the stiffness of the bracing components is changed conveniently, and structure optimization is achieved.

Description

technical field [0001] The invention relates to the technical field related to construction engineering, in particular to a cross-arranged anti-buckling brace, a building with the brace and its application. Background technique [0002] The frame-bracing system is a common structural system in multi-story buildings. The lateral rigidity and lateral bearing capacity of the frame structure can be improved by setting the support. For building structures that require seismic fortification, steel braces can dissipate seismic energy through yielding. However, if it is ensured that the steel support yields under earthquake action, its cross-sectional size needs to be limited. [0003] Under the action of reciprocating load under the earthquake, the steel support with too small section will buckle under compression, and the hysteretic performance is poor. Therefore, anti-buckling braces are widely used in structures at present. The basic principle is that on the one hand, by limi...

AI Technical Summary

Problems solved by technology

[0005] 1. Waste of steel

Since the main force-bearing element of the traditional buckling-resistant brace is the core part, the plates at the core position are concentrated, and the slenderness is relatively large, which is prone to buckling. To prevent the buckling of the core material, it is necessary to increase the thickness of the outer sleeve; and the outer sleeve is only Responsible for restraining the core material, did not participate in the axial force, did not make full use of steel, resulting in waste of steel;

[0006] 2. Self-heavy

The concrete filling material between the core material and the outer sleeve is heavy, low in strength and unstable in performance

[0007] 3. The restrained concrete between the core material and the outer sleeve is easily crushed and loses its restraint and anti-buckling effects, resulting in a significant reduction in its energy dissipation capacity

When the length of the support and the steel type of the support core are selected, the ratio η of the strength and stiffness of the support is fixed, which limits the choice of the designer

[0009] 5. Unable to achieve cross arrangement

[0010] 6. Unable to achieve on-site splicing

Therefore, the anti-buckling support can only be manufactured in the factory and installed on site, and the on-site splicing of super long and overweight supports cannot be realized

[0011] Chinese Patent No. CN201410560038.4 discloses an all-steel support named "An all-steel four-steel tube multi-section super-long anti-buckling support", which can realize on-site splicing of the support, but the support core material is still wrapped in the outer sleeve , it is impossible to realize the cross arrangement

The cross-section along the length of the core material is the same, and the ratio of the strength and stiffness of the support cannot be adjusted actively; at the same time, the support is still limited within the casing, and the intersecting problem in the plane cannot be realized

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