Steel frame precast prestressed beam column joint with post-earthquake recovering function

A technology of beam-column joints and recovery functions, applied in the field of steel structure joints, can solve the problems of prolonging the construction time of steel frames, hindering the application of steel frame structure systems with recoverable functions, and increasing the difficulty of steel frame construction

Inactive Publication Date: 2012-12-12
BEIJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing recoverable functional steel frame system requires on-site tensioning of prestressed cables, which not only increases the construction difficulty of the steel frame,

Method used

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  • Steel frame precast prestressed beam column joint with post-earthquake recovering function
  • Steel frame precast prestressed beam column joint with post-earthquake recovering function
  • Steel frame precast prestressed beam column joint with post-earthquake recovering function

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Experimental program
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Embodiment Construction

[0037] Such as Figure 1-12 As shown, a post-earthquake recoverable prefabricated prestressed steel frame beam-column joint, including steel frame columns and short beam sections, beam-column connection devices and energy dissipation devices; it is characterized in that: the steel frame columns include steel columns 1. The column stiffener 2 welded at the position flush with the flange of the steel column 1 and the column stiffener 3 welded at the outer side of the flange of the steel column 1 corresponding to the beam; the short beam section includes the short beam section web 4 and welded The short beam section flange 5 at the edge of the short beam section web and the short beam section flange reinforcement plate 6 connected to the upper and lower flange positions at the end of the short beam section; The web stiffener 7 of the short beam section, the prestressed cables 8 and the beam end top plate 9 at the contact position between the flange of the steel column and the sho...

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PUM

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Abstract

The invention relates to a steel frame precast prestressed beam column joint with a post-earthquake recovering function. The joint comprises a steel frame column, a short beam section, a beam column connection device and an energy consumption device, wherein the steel frame column comprises a steel column, a column reinforced rib and a column reinforced plate; the short beam section comprises a short beam section web, a short beam section flange and a short beam section flange reinforced plate; the beam column connection device comprises a short beam section web reinforced rib, a prestressed cable and a beam end top plate; the energy consumption device comprises two channel steels and a high-strength bolt; and the two short beams are integrally connected with the column in a factory through a tension prestressed cable and two short beam section web reinforced ribs. When the earthquake action achieves a certain degree, the contact surface of the beam and the column is opened; the high-strength bolt is in friction energy dissipation so as to avoid destroying main components, such as beams and columns After the earthquake, the beams can be recovered to the former vertical position under the action of the prestress.

Description

Technical field: [0001] The patent of the invention relates to a steel structure node, in particular to a steel frame prefabricated prestressed beam-column node with recoverable functions after an earthquake applied in the field of building structures. Background technique [0002] Steel frame beam-column joints are widely used in seismic steel structures. The traditional steel frame beam-column rigid joints are divided into two types. Site welding, the beam web and the splice plate are connected by high-strength bolts, and the splice plate and the flange of the steel column are welded at the factory; Beams and frame beams are bolted and welded at the construction site or fully bolted. However, these two types of beam-column joints are prone to brittle failure due to unprotected beam end welds after earthquakes. In recent years, the improved steel frame beam-column joints, such as strengthening and weakening, can achieve the purpose of plastic hinge moving outward during st...

Claims

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Application Information

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IPC IPC(8): E04B1/58E04B1/98E04B1/24E04G21/14
Inventor 张爱林张艳霞刘学春孙文龙
Owner BEIJING UNIV OF TECH
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