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BIM (Building Information Modeling)-based tree-shaped column node steel bar arrangement structure and construction method

A construction method and a technology of column joints, applied to structural elements, building components, building structures, etc., can solve problems such as difficult to determine the length of steel bar blanking, inaccurate sleeve arrangement and positioning, and complex force at joints, etc., to achieve Avoid steel bar collisions and cutting difficulties, enhance flexibility and expand, and achieve continuous and smooth shapes

Pending Publication Date: 2022-03-18
CHINA CONSTR EIGHTH ENG DIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are more and more applications of tree-like columns in building structures. The arrangement of steel bars at tree-like column nodes is complex. Two or more columns intersect at one point. The number of steel bars in the node concrete is large, and it is inevitable to avoid avoidance, collisions, etc. In addition, the stress at the joints is complex, and steel is often added to the beam at the transition of the tree-like column to improve the punching resistance of the joint, which will cause some column reinforcements to intersect with the steel inside the beam, and the arrangement and positioning of the sleeves will be inaccurate , the phenomenon of difficulty in blanking
At the same time, there are many anchoring forms of steel bars in the column, and it is difficult to determine the cutting length of steel bars
[0003] In the related technology, in order to avoid the mutual interference and collision of steel bars at the crossing joints of steel bars, cross-shaped or overall prefabricated tree-like column joints are often used. The cross-shaped arrangement has strict requirements on the shape of the joints and is not suitable for complex In the construction of the shape, the structure at the node of the overall prefabricated tree-like column has interfaces, and the installation method is not firm compared with the overall construction, so it is not suitable for the construction of large-scale tree-like columns

Method used

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  • BIM (Building Information Modeling)-based tree-shaped column node steel bar arrangement structure and construction method
  • BIM (Building Information Modeling)-based tree-shaped column node steel bar arrangement structure and construction method
  • BIM (Building Information Modeling)-based tree-shaped column node steel bar arrangement structure and construction method

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Experimental program
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Effect test

Embodiment 1

[0044] The embodiment of the present invention discloses a BIM-based construction method for arranging steel bars at tree-like column nodes, referring to figure 1 , including the following construction steps:

[0045] Step 1: Preliminarily arrange the reinforcement structure at the node of the tree-like column, and carry out preliminary design records through two-dimensional drawings, and then use BIM software to draw a three-dimensional model drawing with reference to the two-dimensional drawings, and establish a preliminary reinforcement arrangement model;

[0046] Step 2: Calculate the collision parameters between the steel bars according to the three-dimensional model of the steel bar arrangement structure established by the BIM software. The collision parameters include the number of collisions and the collision depth, optimize the steel bar arrangement structure according to the collision parameters, including adjusting the circle Number and spacing reduce collision para...

Embodiment 2

[0053] The preliminary reinforcement arrangement model described in step 1 includes 1 arrangement of outer longitudinal bars, 2 arrangements of inner longitudinal bars, 3 arrangements of outer stirrups and 4 arrangements of inner stirrups, and the minimum number of steel bars required is determined by force calculation, according to A minimum number of bars are arranged.

[0054] The optimized steel bar arrangement structure described in step 2 is adjusted by human-computer interaction, and the position of the steel bar is manually adjusted to avoid other steel bars to the greatest extent. During the adjustment process, the computer displays the collision parameters in real time and automatically calculates the force of the steel bar. .

[0055] refer to figure 2 with 3 , the adjustment of the position of the reinforcement includes the adjustment of the spacing between the reinforcement and the adjustment of the reinforcement ring layer, and the adjustment of the spacing be...

Embodiment 3

[0062] The BIM software includes Revit Structure, Navisworks and Lumion, and the collision parameters and stress conditions are displayed in real time, including numerical display and chromatogram display.

[0063] The template uses the following scheme:

[0064]

[0065] Under the premise of ensuring the integrity and safety of the structure, the collision rate of steel bars using this tree-like column node reinforcement arrangement method is reduced from 40.0% before optimization to 5.0%, and the actual collision rate is 3.0% during the on-site supervision and inspection process. The speed has been significantly increased, from 10 days to 8 days, and the standard floor height has been reduced from 3.9m to 3.6m while keeping the net height unchanged, and the construction cost per square meter can be reduced by 5%.

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Abstract

The invention relates to the technical field of tree-shaped column design and construction, in particular to a BIM-based tree-shaped column node steel bar arrangement structure and a construction method. The method mainly comprises the following construction steps of initial arrangement of a steel bar structure, optimization of the steel bar structure, on-site lap joint of steel bars, installation of a pouring formwork, layered pouring operation and removal of the pouring formwork. The steel bar arrangement structure comprises outer longitudinal bars and inner longitudinal bars, the ring layer where the inner longitudinal bars are located is located in the ring layer where the outer longitudinal bars are located, the outer longitudinal bars and the inner longitudinal bars are separated through inner stirrups, and the outer longitudinal bars and the inner longitudinal bars are crossed and gathered into a bundle at the joints of the tree-shaped column. The problems of collision between tree-shaped column joint column steel bars and column steel bars, collision between the column steel bars and beam steel bars and anchoring positioning precision of the column steel bars and profile steel are solved, steel bar collision and difficult discharging are effectively avoided, the steel bar length and elevation positioning precision is improved, cast-in-place concrete is uniform in stress, the construction quality is high, and the shape is continuous, smooth, simple and attractive.

Description

technical field [0001] The invention relates to the technical field of tree-like column design and construction, in particular to a BIM-based tree-like column node reinforcing bar arrangement structure and construction method. Background technique [0002] The building structure must not only be safe and reliable, but also beautiful and iconic. There are more and more applications of tree-like columns in building structures. The arrangement of steel bars at the nodes of tree-like columns is complicated. Two or more columns intersect at one point. There are many steel bars in the node concrete, and it is inevitable to avoid avoidance, collisions, etc. In addition, the stress at the joints is complex, and steel is often added to the beam at the transition of the tree-like column to improve the punching resistance of the joint, which will cause some column reinforcements to intersect with the steel inside the beam, and the arrangement and positioning of the sleeves will be inac...

Claims

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Application Information

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IPC IPC(8): E04C5/16G06F30/13G06F30/20G06F119/14
CPCE04C5/163E04C5/166E04C5/168G06F30/13G06F30/20G06F2119/14Y02T10/40
Inventor 吕桂阳梁如鸣刘洋和西良葛序尧付少帅
Owner CHINA CONSTR EIGHTH ENG DIV
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