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Unbonded prestressed assembly-type joint provided with energy dissipation device and construction method

An energy-consuming device and non-bonding technology, which is applied to structural elements, protective buildings/shelters, building components, etc., can solve the problems of large earthquake response, low energy consumption, and complex construction, and achieve small building space, High energy dissipation capacity and good shock absorption effect

Pending Publication Date: 2019-01-18
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unbonded prestressed prefabricated structure has the advantages of fast construction speed, saving building materials, and strong self-resetting ability. However, this structural system has weaknesses such as low energy consumption and large earthquake response.
[0004] The patent document CN104032840A adds energy-dissipating angle steel at the joints, which can effectively improve the energy-dissipating capacity, but since there is no vibration isolator at the joint of the beams and columns, the collision of the beams and columns cannot be avoided, resulting in premature failure of the joints
In the patent document CN106836479A, corbels are added to the lower column, which can improve the seismic performance of the joints, but the addition of corbels takes up a large building space, which affects the use efficiency of the building space
Patent document CN105525679A adds energy-dissipating rods and corbels, and cast-in-place concrete on the upper surface of the floor can enhance energy-dissipating capacity and realize hierarchical shock absorption and energy consumption, but the construction is complicated, the site is not easy to operate, and the cost is high

Method used

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  • Unbonded prestressed assembly-type joint provided with energy dissipation device and construction method
  • Unbonded prestressed assembly-type joint provided with energy dissipation device and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: as figure 1 As shown, an unbonded prestressed prefabricated node with energy dissipation devices includes vertically connected precast concrete columns 100 and precast concrete beams 200, and the precast concrete columns 100 are vertically connected with precast concrete beams 200 on one side, That is, the connection node between the precast concrete column 100 and the precast concrete beam 200 is an edge node, the end of the precast concrete beam 200 and the side wall of the precast concrete column 100 are connected through a bellows damper 300, and one end of the bellows damper 300 is fixedly connected On the side wall of the precast concrete column 100, the other end of the bellows damper 300 is fixedly connected to the end of the precast concrete beam 200; the precast concrete beam and the precast concrete column are pierced with the same prestressed steel bar 400, and the prestressed steel bar 400 is connected by the bellows The damper passes through ...

Embodiment 2

[0028] Embodiment 2: as figure 2 As shown, in this embodiment, the precast concrete column is vertically connected to the precast concrete beams on both sides, and the precast concrete column is located in the middle of the precast concrete beams on both sides, that is, the precast concrete column 100 and the two precast concrete beams 200 The connection node is the middle node, and the middle node does not need to use the connecting steel plate, but the angle steel 500 on both sides and the flat steel plate 320 on both sides are fixedly connected by the anchoring steel bar 600 pierced on the prefabricated concrete column, and the end of the anchoring steel bar After passing through the connecting angle steel or flat steel plate, it is locked by high-strength nut 700.

[0029] In this embodiment, the two ends of the prestressed steel bars are anchored to the far ends of the precast concrete beams on both sides; the precast concrete columns and the precast concrete beams are res...

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Abstract

The invention relates to an unbonded prestressed assembly-type joint provided with an energy dissipation device and a construction method. The unbonded prestressed assembly-type joint comprises a prefabricated concrete column and a prefabricated concrete beam which are vertically connected, the end of the prefabricated concrete beam is connected with the side wall of the prefabricated concrete column through a corrugated pipe damper, one end of the corrugated pipe damper is fixedly connected to the side wall of the prefabricated concrete column, and the other end of the corrugated pipe damperis fixedly connected to the end of the prefabricated concrete beam; the same prestressed rebar penetrates through the prefabricated concrete beam and the prefabricated concrete column, and penetratesthrough the middle of the corrugated pipe damper. The assembly-type joint has the advantages of a high energy dissipation capability, good ductility and a good damping effect, and can prevent the beamand the column from being collided; moreover, the assembly-type joint is simple in construction, easy to achieve and low in cost, a small building space is occupied, and the using efficiency of the building space is not influenced.

Description

technical field [0001] The invention relates to an unbonded prestressed assembled node with an energy dissipation device and a construction method. Background technique [0002] The industrialization of construction is one of the development trends of contemporary construction technology, and vigorously developing prefabricated buildings is the only way to realize the industrialization of construction. Although prefabricated prefabricated concrete structures have many advantages and good development prospects, their use in earthquake areas is limited due to poor reliability of joint connections of prefabricated structures and it is often difficult to meet the mechanical requirements under repeated loads. However, the prestressing technology is applied to the prefabricated concrete structure, and the overall force-bearing nodes and continuous force-bearing frame are formed through the pre-compression connection in the node area, which improves the seismic performance of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/20E04B1/21E04H9/02E04B1/98E04C5/08
CPCE04B1/20E04B1/21E04C5/08E04H9/021
Inventor 吴琛陈思坚项洪
Owner FUJIAN UNIV OF TECH
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