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Fabricated concrete column-steel beam energy dissipation type panel point connecting device

A concrete column and node connection technology, which is applied in the direction of architecture and building construction, can solve the problems of reducing the collapse resistance of structures, increasing the anti-seismic requirements of columns, and cracking floor slabs, so as to avoid bolt breakage, increase the damage threshold, and Effect of lateral stiffness

Active Publication Date: 2013-08-14
江苏德丰建设集团建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many concrete and precast concrete frames, beam end growth will have an adverse effect, possibly cracking the slab, and may even reduce the collapse resistance of the structure due to increased seismic demands on the columns

Method used

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  • Fabricated concrete column-steel beam energy dissipation type panel point connecting device
  • Fabricated concrete column-steel beam energy dissipation type panel point connecting device
  • Fabricated concrete column-steel beam energy dissipation type panel point connecting device

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment is an asymmetrical frictional connection. Such as figure 1 In the connection form shown, the friction plate 9 is only set at the lower flange, and the web friction plate 14 is set at the web near the lower flange. The web is attached to the inner side of the cover plate 10 . When the joint is in normal use, it behaves as a rigid behavior. The connection between the beam and the column under the strong earthquake generates a relative rotation with the upper flange as the center of rotation through the sliding of the high-strength friction bolts 13 at the lower flange and the bottom of the web, as shown in figure 2 As shown, thereby reducing the impact on the floor. When the contact surface between the friction plate 9 and the lower flange of the steel beam and the web cover plate 8 slips, the seismic energy is dissipated through friction to form a slip hinge. By setting the gap at the beam end, the oblong hole 11 is opened to meet the requirements of ...

Embodiment 2

[0043] This embodiment is a symmetrical frictional connection. Such as image 3 As shown, the oblong hole connection cover plate 7 is arranged symmetrically on the upper and lower flanges, and the friction plate 9 is respectively arranged between the oblong hole connection cover plate 7 and the upper and lower flanges. The friction plate 9 is located on the inner side of the oblong hole connection cover plate 7, and the connection cover plate The bolt holes are all oblong holes 11, the bolt holes connecting the web cover plate 8 and the embedded steel beam 4 are opened as circular holes 12, and the bolt holes connecting the web cover plate and the intermediate steel beam 3 are opened as oblong Shaped hole 11.

Embodiment 3

[0045] This embodiment is a connection mode without friction plates. Such as Figure 4 As shown, round hole connecting cover plates 6 are arranged symmetrically on the upper and lower flanges, but there is no friction plate between the round hole connecting cover plate 6 and the flange, and there is no web additional cover plate 10 and web friction plate at the web. 14. Circular holes 12 are provided on the flange and the web, and are connected by high-strength bolts 5 to form a nearly rigid connection.

[0046] To sum up, the fabricated concrete column-steel beam energy-dissipating node connection device of the present invention is mainly composed of beam-beam bolt connection parts and a frictional energy-dissipating device. The invention aims to develop a connecting device matched with the full prefabricated assembly process, reduce the adverse effect on the floor, and improve the energy consumption capacity of the assembled structure. The prefabricated concrete column 1 ...

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Abstract

The invention discloses a fabricated concrete column-steel beam energy dissipation type panel point connecting device. The fabricated concrete column-steel beam energy dissipation type panel point connecting device is composed of a beam-beam bolt connection component and a friction energy dissipation device, and comprises a prefabricated concrete column, a pre-buried steel beam, a middle steel beam and a combination connection steel piece, wherein transversal surfaces of the pre-buried steel beam and the middle steel beam are both H-shaped, webs of the pre-buried steel beam and the middle steel beam are connected through a web cover plate, and flanges of the pre-buried steel beam and the middle steel beam are connected through a connection cover plate. Earthquake energy is dissipated by using friction plates attached inside a combination steel piece and through a friction energy dissipation mechanism. Compared with the prior art, the connecting device can reduce adverse effects on a floor and achieve a beam hinge yielding mechanism by moving a plastic hinge outward, the energy dissipation device can improve fabricated structure energy dissipation and reduce damages of main structural members, connection parts and the steel beams can be conveniently maintained, replaced and dismantled for reuse, and simultaneously, the fabricated concrete column-steel beam energy dissipation type panel point connecting device is produced by using a whole prefabricated industrialization standard, and installed only through bolts on site, and has strong engineering practicability.

Description

technical field [0001] The invention relates to a fully prefabricated assembled mixed frame structure, in particular to an assembled concrete column-steel beam energy-consuming node connection device. Background technique [0002] For prefabricated concrete frame structures, nodes and connections often become the weakest link in the entire structural system. Since the node connection plays an important role in transmitting, distributing internal forces and ensuring the integrity of the structure in the frame, its damage may cause the entire frame to lose its bearing capacity and cause the structure to collapse. Most areas in my country are located in earthquake-prone areas, and the connection reliability of prefabricated structures is poor, which makes it difficult to meet the performance requirements under earthquakes. In addition, the post-earthquake repair of node areas is difficult, so nodes and connections have become restrictions on the use of prefabricated structures ...

Claims

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Application Information

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IPC IPC(8): E04B1/58
Inventor 潘志宏张义保李爱群周智彬朱延章
Owner 江苏德丰建设集团建筑科技有限公司
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