A metal buckling-restrained support of post-mounted casing and its construction method

Abstract

A post-mounted metal buckling restraint support and a construction method thereof, the restraint support includes an inner core profile, the inner core profile is selected from seamless square steel pipes / round steel pipes or H-shaped steel, and the two ends of the inner core profile are respectively welded with end plates and Longitudinal stiffeners, the restraint sleeve is set outside the inner core profile, the restraint sleeve is composed of two L-shaped assemblies that are buckled and connected, the L-shaped assembly includes an equal-leg angle steel, and the inner sides of the two limbs of the equal-leg angle steel are respectively welded with Channel steel, the construction method is to weld two L-shaped assemblies along the full length in the longitudinal direction, or to use tension-resistant materials to bind the entire length, or to connect multiple L-shaped hoops evenly distributed with bolts. The buckling restraint support ensures The deformation ability of the support is improved, and it has a large section bending stiffness, which can reduce the requirements for the outer sleeve; the processing amount is small, and the installation and replacement of the restraint sleeve is convenient.

Description

technical field [0001] The invention belongs to the technical field of buckling constrained supports, and in particular relates to a metal buckling constrained support of a rear-mounted casing and a construction method thereof. Background technique [0002] The compressive bearing capacity of ordinary steel braces drops significantly after buckling, and has obvious characteristics of tension and compression asymmetry. They must be arranged in pairs in the structure to play a stabilizing role under earthquakes, and the deformation of braces increases sharply after buckling, which will affect the The surrounding enclosure members have adverse effects, and the use of buckling restraint supports can effectively solve the above problems. [0003] The existing buckling-constrained braces mainly have the following problems: usually, the buckling-constrained braces are used as energy-dissipating components, and the working section is short, which leads to early yielding of the brace...

AI Technical Summary

Problems solved by technology

[0003] The existing buckling-constrained braces mainly have the following problems: usually, buckling-constrained braces are used as energy-dissipating components, and the working section is short, which leads to early yielding of the braces, affects the later deformation capacity, and cannot meet the large deformation capacity requirements of the braces in some cases; the core Most of the materials use straight or cross-shaped cross-sections. The core material cross-section has limited bending rigidity and is prone to high-order buckling, which requires high requirements for the restraint sleeve and high manufacturing precision; if the restraint sleeve is damaged, the entire support needs to be replaced. The cost is high; it is difficult to replace the ordinary support in the existing structure with the buckling restraint support

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