Connecting structure of inclined strut prefabricated concrete pipe pile columns and hollow floor or flat slab

A technology of prefabricated concrete and hollow floors, which is applied in the directions of columns, slabs, pier columns, etc., can solve the problems of high cost, high installation technology and precision requirements, and reduced seismic performance, and achieve a high degree of standardization and mass production , the effect of improving stiffness

Inactive Publication Date: 2021-08-06
广东省建科建筑设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ⑴The section of the precast concrete column needs to be designed according to the actual engineering requirements, not only the cost is high, but also it cannot reflect the standardization advantages of prefabricated prefabricated components
[0005] (2) Precast concrete column joints are usually connected by grouting sleeves. The sleeve connection technology requires high installation technology and precision, and it is troublesome to assemble and connect on site.
[0006] (3) After the ordinary prefabricated frame structure is subjected to an earthquake, the bearing capacity of the structure will be reduced, and the seismic performance will be reduced.

Method used

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  • Connecting structure of inclined strut prefabricated concrete pipe pile columns and hollow floor or flat slab
  • Connecting structure of inclined strut prefabricated concrete pipe pile columns and hollow floor or flat slab
  • Connecting structure of inclined strut prefabricated concrete pipe pile columns and hollow floor or flat slab

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 and 2 Shown, it is a kind of connection structure between the prefabricated concrete pipe pile column and the hollow floor or the beamless floor of the present invention, which includes the upper floor prefabricated concrete pipe pile column 1, the lower floor prefabricated concrete pipe pile column 2, the diagonal brace 4 and The hollow floor 3, the precast concrete pipe pile 1 on the upper floor and the precast concrete pipe pile 2 on the lower floor are all formed by inserting the connecting steel bar 5 into the core hole of the precast concrete pipe pile and pouring in-situ concrete. The upper precast concrete pipe pile 1 and the The lower prefabricated concrete pipe pile 2 can use prestressed or non-prestressed steel bars or mixed prestressed and non-prestressed PHC / PC / PRCI / PRCII hollow pipe piles or other pipe piles mixed with prestressed steel bars and ordinary steel bars , You can also use any other strength, type of pipe pile, the cross-sectio...

Embodiment 2

[0054] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the floor is a beamless floor 15, and no supporting member is set on the top of the precast concrete pipe pile column 2 on the lower floor, and no beams are provided in it, and the floor The load is directly transmitted to the foundation by the slab through the column. This structure is simple in force transmission and increases the net height of the floor.

Embodiment 3

[0056] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the supporting member set on the top of the lower precast concrete pipe pile 2 is a column cap 16, and for heavy loads, a flat Supporting plate, in order to reduce the bending moment value in the floor and bear the punching force, increase the rigidity of the floor, so that the load of the plate is transmitted to the column relatively smoothly. For light loads, there is no need to set a flat support plate above the column cap. In the slab-column joint area 9, the dimensioning should accommodate the 45° punching failure cone.

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Abstract

The invention discloses a connecting structure of inclined strut prefabricated concrete pipe pile columns and a hollow floor or a flat slab. The connecting structure comprises an upper layer prefabricated concrete pipe pile column body, a lower layer prefabricated concrete pipe pile column body, inclined struts and the hollow floor/flat slab, the upper layer and lower layer prefabricated concrete pipe pile column bodies are formed by inserting connecting steel bars into prefabricated concrete pipe pile core holes and casting concrete in place, plate-column node areas are arranged between the upper layer and lower layer prefabricated concrete pipe pile column bodies and the hollow floor/flat slab, the connecting steel bars penetrate through the plate-column node areas to stretch into the upper layer and lower layer prefabricated concrete pipe pile column bodies for anchoring, the inclined struts are located between the two prefabricated concrete pipe pile column bodies on the same layer, and the two ends of the inclined struts are connected with the two plate-column joint areas located at the diagonal positions correspondingly. A prefabricated frame structure is reinforced by adding the inclined struts, the lateral load resistance of the structure is improved, and the anti-seismic property is improved; and plate-column joints are simple in structure, low in cost, convenient to construct, safe, reliable, high in construction efficiency and low in construction and installation fault tolerance rate.

Description

technical field [0001] The invention belongs to the prefabricated concrete building structure technology, in particular to a connection structure between a prefabricated concrete pipe pile with diagonal bracing and a hollow floor or a beamless floor. Background technique [0002] Article 3.0.3 of the "Prefabricated Evaluation Standard" (GB / T51129-2017) stipulates that the prefabricated building should meet the evaluation score of the main structure part of not less than 20 points, and in the prefabricated building scoring table, the main structure full score 50 points, of which, the proportion of vertical components such as columns, supports, load-bearing walls, and ductile wall panels reaches 35% to 80%, and the score value is 20 to 30 points. If the ratio reaches 70% to 80%, the score is 10 to 20 points. If the vertical components are not prefabricated, the proportion of beams, slabs, stairs, balconies, air-conditioning panels and other components must reach 80%. It can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/41E04B1/58E04C3/36E04B5/32E04B1/98E04H9/02
CPCE04B1/41E04B1/5837E04C3/36E04B5/32E04B1/98E04H9/021E04B2103/02E04B1/388
Inventor 何敏秀徐采薇徐其功
Owner 广东省建科建筑设计院有限公司
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