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A self-resetting energy-dissipating connection node of assembled concrete-filled steel tube column-h-shaped steel beam

A technology for concrete-filled steel tubular columns and connecting nodes, which is applied in building types, protective buildings/shelters, buildings, etc., can solve problems such as adverse effects of floor slabs, difficult construction, and beam growth, and shorten the construction period and labor costs. Effect

Active Publication Date: 2022-04-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such joints can cause "beam growth" during rotation, which can adversely affect the slab
In addition, the existing self-resetting beam-column joints require on-site prestressing, which is difficult to construct and difficult to guarantee the quality of prestressing

Method used

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  • A self-resetting energy-dissipating connection node of assembled concrete-filled steel tube column-h-shaped steel beam
  • A self-resetting energy-dissipating connection node of assembled concrete-filled steel tube column-h-shaped steel beam
  • A self-resetting energy-dissipating connection node of assembled concrete-filled steel tube column-h-shaped steel beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 , a self-resetting energy-dissipating connection node of an assembled concrete-filled steel pipe column-H-shaped steel beam, including a concrete-filled steel pipe column 1, an H-shaped steel beam 2, an energy-dissipating component and a connecting component; the connecting end of the H-shaped steel beam 2 is a hypotenuse, The connection end is connected to the CFST column 1 through a hinge, a wedge-shaped space is formed between the connection end of the H-shaped steel beam 2 and the side wall of the CFST column 1, and the lower flange of the H-shaped steel beam 2 connection is far away from the CFST column, so that The node rotates around the connection between the upper flange of the H-shaped steel beam 2 and the CFST column; energy-dissipating components are arranged between the lower flange of the H-shaped steel beam 2 and the CFST column, and the H-shaped steel beam 2 and the CFST column 1 is provided with connecting parts.

[0030] The node prov...

Embodiment 2

[0038] (1) Model establishment

[0039] ABAQUS6.10 software was used to carry out finite element simulation on the patent of the present invention, and a single-layer single-span model was established, with a span of 2100mm and a floor height of 1200mm. The dimensions of the model components are shown in Table 1:

[0040] Table 1 Dimensions of model components

[0041]

[0042] The steel adopts the linear strengthening model, and the yield strength is taken as f y =345MPa, modulus of elasticity E=206000MPa, modulus of strengthening E t = 2% E, Poisson's ratio is υ = 0.3, using C30 concrete, the elastic modulus E of the steel strand PT =195000MPa, the tensile strength is 1865MPa, the core bolts are 8.8 grade high-strength bolts, the yield strength is 800MPa, and a bolt load (pretightening force) of 175kN is applied during the simulation process. The prestress of the steel strand is applied by the cooling method, and the specific calculation method is:

[0043]

[0044...

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Abstract

The invention provides an assembled concrete-filled steel tube column-H-shaped steel beam self-resetting energy-consuming connection node, which includes a steel-filled steel tube column, an H-shaped steel beam, an energy-dissipating component and a connecting component; the connecting end of the H-shaped steel beam is a hypotenuse, The connection end is connected with the concrete-filled steel pipe column through a hinge, and a wedge-shaped space is formed between the connection end of the H-shaped steel beam and the side wall of the steel-filled steel pipe column, so that the node only rotates around the upper flange of the H-shaped steel beam; An energy-dissipating component is arranged between the lower flange and the steel tube concrete column, and a connecting component is arranged between the H-shaped steel beam and the steel tube concrete column. The invention has a simple structure, can be assembled during the construction process, significantly saves costs, and can achieve good earthquake prevention and disaster reduction and self-resetting effects, and can be widely used in the technical field of energy dissipation and shock absorption of high-rise and super high-rise building structures.

Description

technical field [0001] The invention belongs to the technical field of earthquake prevention and disaster reduction of building structures, and relates to a self-resetting beam-column node form, in particular to a self-resetting energy-consuming connection node between an assembled steel pipe concrete column and an H-shaped steel beam. Background technique [0002] The self-resetting structure is a new type of structure aimed at reducing the residual deformation of the building structure after the earthquake. This system can not only effectively control the maximum deformation of the structure, but also reduce or even eliminate the residual deformation of the structure, so that the building structure can recover quickly after the earthquake. Use the function to realize the anti-seismic fortification goal of "repairable in moderate earthquakes". [0003] Most existing self-resetting structures use beam-column joints that rotate around the upper and lower flanges of the beam. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58E04B1/98E04H9/02
CPCE04B1/58E04H9/021
Inventor 王先铁李进冯云堂贺博林麟珲
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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