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Rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and construction method thereof

A technology of unilateral bolts and rectangular steel pipes, which is applied in the direction of construction and building construction, can solve the problems of buckling damage, bearing capacity, stiffness, ductility and poor energy dissipation capacity, achieve high energy consumption capacity, realize standardized production, Good plasticity and ductility

Inactive Publication Date: 2014-12-03
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rectangular steel pipe wall directly connected with unilateral bolts is prone to local buckling failure under the action of out-of-plane concentrated loads. Therefore, the bearing capacity, stiffness, ductility and energy dissipation Poor ability

Method used

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  • Rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and construction method thereof
  • Rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and construction method thereof
  • Rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and construction method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The structure of this embodiment is as follows figure 1 , figure 2 As shown, the outer reinforcing plate 6 is composed of two channel steels, and each channel steel is made by tailor-welding three steel plates or cold-formed by a steel plate. First, the steel beam 4 and the end plate 3 are welded firmly, and then the two The block channel steel and the pipe wall of the steel pipe column 1 are reliably connected by surrounding welding, and then bolt holes are opened at the corresponding positions of the wall of the steel pipe column 1, the channel steel web and the end plate 3 for the installation of unilateral bolts 5. During on-site construction, the steel The beam 4 is hoisted to the designated position, the unilateral bolt 5 is tightened with a torque wrench, and the end plate 3, the outer reinforcing plate 6 and the wall of the steel pipe column 1 are connected reliably. Finally, concrete 2 is poured in the steel pipe column 1 to complete the construction of the jo...

Embodiment 2

[0039] The structure of this embodiment is as follows image 3 , Figure 4 As shown, first make the built-in short H-beam 7, the width and height of its section are slightly smaller than the width and height of the inner side wall of the section of the steel pipe column 1, and its length is slightly larger than the height of the section of the steel beam 3, and then the short H-beam 7 is inserted into the node core and spot welding with the inner wall of the steel pipe column 1, then the steel beam 4 and the end plate 3 are welded firmly, and bolt holes are opened at the corresponding positions of the steel pipe column 1 wall, the built-in short H-beam 7 and the end plate 3 for the installation of unilateral Bolt 5. During on-site construction, hoist the steel beam 3 to the designated position, tighten the unilateral bolt 4 with a torque wrench, and connect the end plate 3, the flange of the built-in short H-beam 7 and the wall of the steel pipe column 1 reliably. Concrete 2 ...

Embodiment 3

[0041] The structure of this embodiment is as follows Figure 5 , Image 6 As shown, firstly, the plug welding hole is opened on the wall of the steel pipe column 1, and the restraint rod 8 is reliably connected with the pipe walls on both sides through the plug welding seam at the opening, and then the steel beam 4 and the end plate 3 are welded firmly, and then the steel pipe column 1 is welded firmly. Bolt holes are opened at the corresponding positions of the wall and end plate 3 for installing unilateral bolts 5. During on-site construction, hoist the steel beam 4 to the designated position, tighten the unilateral bolts 5 with a torque wrench, and connect the end plate 3 to the steel pipe column 1. The walls are connected reliably, and finally concrete 2 is poured in the steel pipe column 1 to complete the construction of the joint.

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Abstract

The invention relates to a rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint and a construction method of the rectangular concrete filled steel tube column and steel beam single-side bolt connecting joint. The connecting joint comprises a rectangular steel tube column and a steel beam, an end plate is welded to the end of the steel beam and fixedly installed on the side wall of the steel tube column through fasteners, and multiple corresponding bolt holes are longitudinally formed in the end plate and the steel beam in a pairwise mode. A reinforcement structure is arranged in the joint core region of the steel tube column. Compared with the prior art, the novel connecting joint has the advantages that the bearing capacity is high, the plasticity and ductility are good, the energy-dissipation capacity is high, and the mechanical property is reliable; compared with a rigid joint where an outer reinforcement ring is adopted, the concrete filled steel tube column and steel beam single-side bolt connecting joint does not need to be welded on site, all the machining processes, except for concrete pouring, are finished in a factory, and therefore machining quality is more reliable; the concrete filled steel tube column and steel beam single-side bolt connecting joint is convenient to install on site and high in construction speed.

Description

technical field [0001] The invention relates to a frame node in a building structure, in particular to a unilateral bolt connection node of a rectangular steel tube concrete column and a steel beam and a construction method thereof. Background technique [0002] Reinforced ring rigid joint is the most widely used type of joint in CFST column-steel beam joints. This type of joint has the advantages of high bearing capacity, high stiffness, and simple and clear force transmission path. However, the field welding work of this type of joint is difficult. Therefore, the semi-rigid joint of CFST column-steel beam connected by bolts is attracting the attention of more and more researchers and engineers. The steel pipe has a closed section, and it is difficult for ordinary bolts to be directly applied to the pipe structure, which leads to fewer forms of semi-rigid joints between CFST columns and steel beams connected by bolts. The emergence of unilateral bolt fasteners can solve th...

Claims

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Application Information

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IPC IPC(8): E04B1/58
Inventor 王志滨李德山陶忠韩林海
Owner FUZHOU UNIVERSITY
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