Unequal-strength wall beam joint based on steel plate hoop confined concrete composite short column

A technology for constraining concrete and steel plate hoop, applied in building components, earthquake resistance, building types, etc., can solve the problems of insufficient vibration, affecting quality, low concrete strength, etc., to improve seismic performance, reduce construction difficulty, and improve bearing capacity Effect

Pending Publication Date: 2022-03-25
CHINA RAILWAY CONSTR GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the existing building construction projects, in order to increase the use space, the concrete strength of the wall as a vertical force member is generally relatively high, and the beam and slab are prone to dry shrinkage cracks due to the large area of ​​the beam and slab, which affects quality, concrete strength is relatively low
In building construction projects, the code requires separation measures to be taken at the interface of concrete with different strengths. This construction method is not ideal, because the slump of commercial concrete is relatively large, if no formwork is set at the interface and it is allowed to flow naturally, it will Make it flow outward for a long distance, and the higher-strength concrete poured first at the joint will make it longer, which will form a construction joint that is not easy to handle at the beam end, and insufficient vibration will cause joints Concrete fails to achieve expected strength

Method used

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  • Unequal-strength wall beam joint based on steel plate hoop confined concrete composite short column
  • Unequal-strength wall beam joint based on steel plate hoop confined concrete composite short column
  • Unequal-strength wall beam joint based on steel plate hoop confined concrete composite short column

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Experimental program
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Effect test

Embodiment 1

[0028] see Figure 1~4 , a unequal-strength wall beam joint based on steel plate hoop-constrained concrete laminated short columns, including wall vertical reinforcement 1, wall stirrup 2, first-strength grade concrete 3, second-strength grade concrete 4, steel plate stirrup 5 and short vertical ribs6. It should be noted that in the field of building construction, the second strength grade concrete 4 is higher strength grade concrete, and the first strength grade concrete 3 is lower strength grade concrete.

[0029] In the embodiment of the present invention, the steel plate hoop 5 can be in two forms: a single steel hoop or a double steel hoop formed by welding steel plates.

[0030] In the embodiment of the present invention, the steel plate hoops 5 and short vertical ribs 6 are built into the concrete 3 of the first strength level at the intersection of nodes, distributed along the wall height direction and extending into the upper and lower walls, and the upper and lower ...

Embodiment 2

[0033] see Figure 1~4 , a unequal-strength wall-beam joint based on steel plate hoop-constrained concrete laminated short columns, including

[0034] Concrete wall, which constitutes the main structure of the wall-beam joint, and it is composed of the first strength grade concrete 3 formed by horizontal pouring, and the second strength grade concrete 4 vertically poured on the upper and lower sides of the first strength grade concrete 3 respectively ;

[0035] Wall vertical reinforcement 1, which is vertically buried inside the concrete wall of the wall beam node, and it is provided with several reinforcement cages bound and fixed by wall stirrups 2 to form the wall;

[0036] Steel plate hoop-constrained concrete laminated short columns, which are arranged in the reinforcement cage formed by the wall vertical steel bars 1 and wall hoops 2 arranged longitudinally, and are composed of steel plate hoops 5 and short vertical bars 6;

[0037] Wherein, the steel plate hoop 5 is a...

Embodiment 3

[0042] A kind of unequal-strength wall beam joint based on steel plate hoop-constrained concrete laminated short columns, its construction method is as follows:

[0043] Step 1, according to the reinforcement diagram, the wall vertical reinforcement 1, the wall stirrup 2, the steel plate hoop 5 and the short vertical reinforcement 6 are bound and formed to form a reinforcement cage for the wall, wherein the first steel plate hoop 5 is bound to the On the wall stirrup 2, the short vertical rib 6 is bound on the steel plate hoop 5 again.

[0044] Step 2: According to the reinforcement diagram, the slab reinforcement, the beam longitudinal reinforcement, the beam stirrup, the joint core area stirrup, the steel plate hoop 5 and the short vertical reinforcement 6 are bound and formed to form the beam slab and the joint core area reinforcement cage.

[0045] Step 3, pouring the second strength grade concrete 4 of the lower wall.

[0046] Step 4, pouring concrete 3 of the first stre...

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PUM

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Abstract

The invention provides an unequal-strength wall beam joint based on steel plate hoop confined concrete laminated short columns. The unequal-strength wall beam joint comprises wall vertical steel bars, wall stirrups, first strength grade concrete, second strength grade concrete, steel plate hoops and short vertical bars. The joint core area is poured with first-strength-grade concrete which is the same as a beam plate, a steel plate hoop confined concrete laminated short column is arranged in the joint core area, and the steel plate hoop confined concrete laminated short column is provided with a steel plate rib and a short vertical rib. The unequal-strength wall beam joint based on the steel plate hoop confined concrete composite short column is high in construction efficiency, small in construction difficulty and good in anti-seismic property.

Description

technical field [0001] The invention relates to a unequal-strength concrete wall-beam node, in particular to a unequal-strength concrete wall-beam node based on steel plate hoop-constrained concrete laminated short columns. Background technique [0002] For the existing building construction projects, in order to increase the use space, the concrete strength of the wall as a vertical force member is generally relatively high, and the beam and slab are prone to dry shrinkage cracks due to the large area of ​​the beam and slab, which affects Quality, concrete strength is relatively low. In building construction projects, the code requires separation measures to be taken at the interface of concrete with different strengths. This construction method is not ideal, because the slump of commercial concrete is relatively large, if no formwork is set at the interface and it is allowed to flow naturally, it will Make it flow outward for a long distance, and the higher-strength concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/38E04B1/98E04H9/02
CPCE04B1/38E04B1/98E04H9/021
Inventor 钱增志周大兴侯立群方宏伟郭琨曹青殷炳帅史乐贤张鹏飞
Owner CHINA RAILWAY CONSTR GROUP
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