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Assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting joint

One - PVC-FRP, PVC-FRP technology, applied in the field of prefabricated steel concrete column - PVC-FRP pipe reinforced concrete beam connection node, can solve the problem of blocking the stirrup in the node area, weakening the bearing capacity of the node, and affecting the force of the steel beam Transmission and other issues, to achieve the effect of increasing bearing capacity and ductility, improving bonding performance, and increasing the contact area

Pending Publication Date: 2022-07-22
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel beam will block the stirrups in the node area, and opening holes in the steel beam will affect the transmission of the steel beam force
In addition, since the PVC-FRP pipe is discontinuous in the node area, the bearing capacity of the node may be weakened

Method used

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  • Assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting joint
  • Assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting joint
  • Assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like Figure 1-6 As shown in the figure, the present invention is a prefabricated steel concrete column-PVC-FRP pipe reinforced concrete beam connecting node, comprising a steel concrete column 1, a PVC-FRP pipe reinforced concrete beam 2, a node connector 3, an I-shaped steel 4, a steel bar The connector 5 and the high-strength bolt 6, the sectioned steel concrete column 1 includes the column section steel 11, the column longitudinal reinforcement 12 and the column stirrup 13;

[0035] The PVC-FRP pipe reinforced concrete beam 2 includes a PVC-FRP pipe 21, a beam longitudinal reinforcement 22 and a beam stirrup 23. The upper surface of the PVC-FRP pipe 21 is connected to the upper flange of the I-beam 4 through high-strength bolts 6, and the beam longitudinal reinforcement 22 It is connected with the node connector 3 through the steel bar connector 5 , and the I-shaped steel 4 and the bar connector 5 are welded to the outside of the node connector 3 .

[0036] A speci...

Embodiment 2

[0038] Among them, the section steel concrete column 1 is not provided with column stirrups 13 in the node area, and the column section steel 11 is provided with two rows of parallel and equally spaced bolt holes in the node area. Ribbed I-beam 32 and end plate 33, the hollow ribbed I-beam 32 is welded inside the hollow ribbed steel cage 31, the end plate 33 is welded to the end of the hollow ribbed I-beam 32, the end plate 33 and the column steel 11 The corresponding positions are provided with two rows of equally spaced bolt holes.

[0039] A specific application of this embodiment is: no stirrups are set in the node area of ​​the sectioned steel concrete column, and the node connector is hooped on the outside of the column section steel in the node section. Equally spaced bolt holes are aligned and connected into a whole by high-strength bolts.

Embodiment 3

[0041] Among them, the column steel 11 and the node connector 3 are aligned and connected by high-strength bolts 6, the hollow ribbed steel cage 31 is hooped on the outside of the column steel 11, and the steel bar connector 5 includes a steel connecting head 51 and a steel connecting sleeve 52. The connecting head 51 is welded to the hollow ribbed steel cage 31 , the steel connecting sleeve 52 is internally provided with threads, one end is connected to the steel connecting head 51 , and the other end is connected to the beam longitudinal bar 22 , and the I-shaped steel 4 is welded to the hollow ribbed steel cage 31 . , the upper flange of the I-shaped steel 4 and the upper surface of the PVC-FRP pipe 21 are provided with two rows of equally spaced bolt holes, which are connected by high-strength bolts 6. The column steel 11, the column longitudinal bars 12, the node connectors 3, The I-beam 4, the steel bar connector 5, the beam longitudinal bar 22 and the beam stirrup 23 are...

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PUM

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Abstract

The assembly type steel reinforced concrete column-PVC-FRP pipe reinforced concrete beam connecting joint comprises a steel reinforced concrete column, a PVC-FRP pipe reinforced concrete beam, joint connecting pieces, I-shaped steel, steel bar connectors and high-strength bolts. The node connecting piece hoops the outer side of the node area column-shaped steel and is in aligned connection with the column-shaped steel through a high-strength bolt; the I-shaped steel is welded to the outer side of the connecting piece and extends into the PVC-FRP pipe reinforced concrete beam, and the PVC pipe is connected with an upper flange of the I-shaped steel through a high-strength bolt in an aligned mode; the beam longitudinal bars are connected with the node connecting pieces through the steel bar connectors. The structure design is reasonable, the structure is simple, the steel reinforced concrete column and the PVC-FRP pipe reinforced concrete beam are connected into a whole through the joint connecting piece, a joint area is restrained and enhanced, stirrups do not need to be arranged, all components can be prefabricated in a factory and can be assembled on site and rapidly assembled in construction, the steel components are all poured into concrete, and the construction efficiency is improved. The advantages of high bearing capacity, good anti-seismic property, good durability and the like are realized.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a connection node of an assembled type steel concrete column-PVC-FRP pipe reinforced concrete beam. Background technique [0002] With the development of modern engineering structures to be tall, large-span, and complex, the bearing capacity and construction technology of traditional reinforced concrete structures can no longer meet the needs of modern engineering structures. In addition, the phenomenon of concrete corrosion and steel corrosion is common in reinforced concrete structures that have been in service for a long time. These problems will lead to the deterioration of concrete structure performance and durability. [0003] PVC-FRP pipe concrete column is a new type of composite column formed by wrapping FRP on a PVC pipe and pouring concrete into the pipe. The PVC-FRP pipe restrains the core concrete, and at the same time, the PVC-FRP pipe can protect the core concrete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/18E04B1/58E04C3/36E04C3/29
CPCE04B1/185E04C3/36E04C3/29
Inventor 于峰宋泽康武萍秦尹方圆鲍海英卜双双
Owner ANHUI UNIVERSITY OF TECHNOLOGY