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A beam-column joint reinforcement avoidance structure and construction method thereof

A beam-column node and node technology, which is applied to building structures, buildings, etc., can solve the problems of increasing the spacing of steel bars, increasing the installation of prefabricated parts, and difficult to unify the bending shape of steel bars, so as to simplify the installation process and simplify the complexity. , the effect of improving convenience

Active Publication Date: 2019-07-16
南通市建筑设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to facilitate the installation of prefabricated components, the number of steel bars that can be arranged on each floor will be reduced, and the spacing of the steel bars needs to be increased, and the bending shape of the steel bars in the form of the bending method is difficult to obtain a uniform and bent shape. Reinforcement can also add difficulty to the installation of prefabricated parts

Method used

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  • A beam-column joint reinforcement avoidance structure and construction method thereof
  • A beam-column joint reinforcement avoidance structure and construction method thereof
  • A beam-column joint reinforcement avoidance structure and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] A beam-column node steel bar avoidance structure, according to the requirements of the concrete specification, the minimum clear distance of the longitudinal bars at the bottom of the prefabricated beam 2 is max (25, d), where d is the diameter of the longitudinal bars, because the commonly used longitudinal bars of beam bars They are all below 25mm. In this embodiment, in order to consider the standardization requirements, the longitudinal reinforcement at the bottom of the beam only considers the situation below 25mm, and the spacing of the steel bars is taken as 50mm to meet the requirements of the standard steel bar spacing.

[0056] refer to figure 1 and figure 2 , including the node 1 and the prefabricated beam 2 where the node 1 intersects. The two sides of the node 1 are overlapped with the prefabricated beam 2 respectively, and the four prefabricated beams 2 are arranged in the shape of a "cross". A row of longitudinal ribs arranged along the length direction...

Embodiment 2

[0058] This embodiment is used to illustrate the situation when the number of longitudinal ribs in the prefabricated beam 2 is an odd number, that is, the first longitudinal ribs 21 and the second longitudinal ribs 31 cannot match each other.

[0059] A beam-column node steel bar avoidance structure, according to the requirements of the concrete specification, the minimum clear distance of the longitudinal bars at the bottom of the prefabricated beam 2 is max (25, d), where d is the diameter of the longitudinal bars, because the commonly used longitudinal bars of beam bars They are all below 25mm. In this embodiment, in order to consider the standardization requirements, the longitudinal reinforcement at the bottom of the beam only considers the situation below 25mm, and the spacing of the steel bars is taken as 50mm to meet the requirements of the standard steel bar spacing.

[0060] refer to figure 1 and image 3 , including the node 1, including the prefabricated beam 2 th...

Embodiment 3

[0062] A construction method for a beam-column node reinforcement avoidance structure, comprising the following steps:

[0063] Fabrication of steel molds for prefabricated components: According to the design drawings, the steel formwork of the components to be prefabricated is produced. In this embodiment, the formwork of the prefabricated components is made of steel formwork. The steel formwork has high strength, high manufacturing precision and can be recycled for many times. , during the processing of the steel formwork, the steel formwork is processed according to the processing technology of the steel formwork and the material type specifications of the construction drawings;

[0064] Reinforcement layout of prefabricated components: set up the prefabricated steel formwork in the prefabrication factory, arrange the longitudinal reinforcement according to the specification, then set the stirrup outside the longitudinal reinforcement, and carry out the first longitudinal re...

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Abstract

The invention relates to a steel bar evading structure for beam column nodes, relating to the field of building design. According to the steel bar evading structure, the problem that reinforcing ribsstretching into the node are collided when precast beams are mounted in an assembling building is solved. The steel bar evading structure comprises a node site and precast beams, wherein a row of longitudinal ribs are arranged in each precast beam along the length direction of the precast beam. The steel bar evading structure is characterized in that the longitudinal ribs include first longitudinal ribs and second longitudinal ribs, wherein the first longitudinal ribs stretch out of the precast beams and are provided with horizontal bending parts in the front, first reinforcing ribs parallel with the first longitudinal ribs are connected to the front ends of the horizontal bending parts, second longitudinal ribs stretch out of the precast beams and are provided with upward vertical bendingparts in the front, second reinforcing ribs parallel with the second longitudinal ribs are connected to the front ends of the vertical bending parts, and the first reinforcing ribs and the second reinforcing ribs are alternately distributed. According to the steel bar evading structure, the bridging manner of steel ribs in existing beam column nodes is improved, so that the collision among the reinforcing ribs can be effectively avoided, and meanwhile, the stabilization of the production of prefabricated components is improved.

Description

technical field [0001] The invention relates to the field of architectural design, in particular to a beam-column node reinforcement avoidance structure and a construction method thereof. Background technique [0002] Beam-column joints of reinforced concrete frame structures are also called joint core areas, which are an important part of the main structure. Most of the earthquake damage of frame structures occurs in the core area of ​​the column and beam-column joints, and the joint damage is mainly shear damage and reinforcement anchorage damage, which will cause the collapse of the entire frame in severe cases. my country's new and old codes both emphasize the design requirements of "strong joints", and make relatively strict regulations on the strength of stirrups and concrete at joints. [0003] Most of the existing beam-column joints adopt the parallel dislocation or bending dislocation of the bottom reinforcement of precast beams to arrange the longitudinal reinforc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/21
CPCE04B1/21
Inventor 冯鹏褚国栋
Owner 南通市建筑设计研究院有限公司
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