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Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint

A technology of steel tube concrete columns and connecting nodes, which is applied in the direction of building types, protected buildings/shelters, building components, etc., can solve the problems of adverse effects of floor slabs, difficult construction, and difficulty in ensuring the quality of prestressing, and achieve shortening Effect of construction period and labor cost

Active Publication Date: 2017-03-22
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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  • Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint
  • Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint
  • Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint

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 a fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint. The connection joint comprises a concrete-filled steel tube column, an H type steel beam, an energy consumption part and a connection part. The connecting end of the H type steel beam is a bevel edge, the connecting end and the concrete-filled steel tube column are hinged, a wedge-shaped space is formed between the connecting end of the H type steel beam and the side wall of the concrete-filled steel tube column, and then the joint only rotates around the top flange of the H type steel beam. The energy consumption part is arranged between the bottom flange of the H type steel beam and the concrete-filled steel tube column, and the connection part is arranged between the H type steel beam and the concrete-filled steel tube column. The structure is simple, fabrication can be achieved in the construction process, cost is remarkably reduced, good earthquake prevention and disaster reduction and self-resetting effects can be achieved at the same time, and the connection joint can be widely applied to the technical field of energy dissipation and shock absorption of high-rise and super high-rise buildings.

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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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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