Method for manufacturing recycled concrete column partially wrapped by prefabricated honeycomb profile steel

A technology of recycled concrete and a production method, which is applied in the direction of manufacturing tools, ceramic molding machines, etc., to achieve obvious economic benefits, suppress local buckling, and facilitate construction.

Pending Publication Date: 2022-07-29
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for making prefabricated honeycomb steel partially wrapped concrete columns, aiming to solve key problems such as how to make up for the performance defects of recycled concrete, how to ensure the interface performance of PEC columns, and how to prevent local buckling of honeycomb steel.

Method used

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  • Method for manufacturing recycled concrete column partially wrapped by prefabricated honeycomb profile steel
  • Method for manufacturing recycled concrete column partially wrapped by prefabricated honeycomb profile steel
  • Method for manufacturing recycled concrete column partially wrapped by prefabricated honeycomb profile steel

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method for manufacturing a prefabricated honeycomb-shaped steel partially wrapped recycled concrete column, comprising the following steps:

[0033] a. Production of honeycomb section steel: The honeycomb section steel includes a web 1 and a flange 2. There are a plurality of circular through holes 3 on the web. The circular through holes are arranged in sequence to form honeycomb holes. The upper and lower ends of the web are flanges. A tie rod 4 is welded between the flange at the upper end of the plate and the flange at the lower end of the web; the honeycomb steel fabrication includes the following steps:

[0034] s1. Web cutting: Take I-beam or H-beam, and use a CNC multi-head automatic cutting machine to cut the web according to the preset arc. The cutting method is as follows: figure 2 The cut is made in the arrangement shown, and the cut webs are then staggered and cooled.

[0035] s2. Welding of the web: Align the semi-circular groove on the upper half of t...

Embodiment 2

[0050] This embodiment is basically the same as Embodiment 1, the difference is: image 3 As shown, the honeycomb steel is welded by flanges and honeycomb webs, wherein the flange size is flexibly selected according to actual needs, and the honeycomb webs are a plurality of webs arranged in sequence, each web and the end of the web The parts are welded and fixed to each other, and the webs are spliced ​​in multiple pieces. When cutting the webs, the plates can be fully utilized to avoid waste. At the same time, a certain number of webs can be selected for welding according to actual needs. For example, choose 2 or more The webs are welded firmly after splicing each other, the length of the web can be flexibly adjusted according to the actual needs, and the width and length of the flange can also be flexibly selected according to the actual needs, making the selection of the section size of the honeycomb steel more flexible.

Embodiment 3

[0052] This example is basically the same as Example 1, the difference is that the concrete partially wrapped by the honeycomb steel is a recycled concrete made by partially replacing natural aggregates with recycled aggregates. The mechanical properties of aggregates will be improved. On the other hand, compared with ordinary concrete, the use of recycled aggregates to partially replace natural aggregates can "turn waste into treasure" from construction waste, thereby bringing certain social benefits and environmental benefits.

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PUM

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Abstract

The invention relates to a manufacturing method of a prefabricated honeycomb profile steel partially wrapped recycled concrete column. The manufacturing method is characterized by comprising the following steps of a, honeycomb profile steel manufacturing, b, steel reinforcement framework manufacturing and mounting, c, recycled concrete manufacturing, d, recycled concrete pouring and e, formwork dismounting. By the adoption of the technical scheme, recycled concrete can be effectively utilized, and low carbon and environment friendliness are achieved; the flexural rigidity of the column body is greatly improved, the bearing capacity of the component is effectively improved, and the corrosion/fire resistance is better; in addition, the meshing force between the section steel and the recycled concrete in the recycled concrete column partially wrapped by the honeycomb section steel is greatly enhanced, single-face one-time pouring can be achieved during prefabricated pouring, use of formworks is greatly reduced, construction is easy, and the construction time is greatly shortened.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a method for manufacturing a prefabricated honeycomb-shaped steel partially wrapped recycled concrete column. Background technique [0002] China is the world's largest consumer of sand and gravel. At present, the total consumption of sand and gravel aggregates in my country exceeds 17.8 billion tons. Such a huge demand for sand and gravel aggregates has led to a shortage of aggregates in many parts of our country. At the same time, a large amount of construction waste is produced every year due to the renovation of old cities and natural disasters, which has caused a series of social and environmental problems. Recycled concrete is a kind of new concrete formed by crushing, cleaning and grading waste concrete blocks, forming recycled coarse aggregate in a certain proportion and grading, and replacing part or all of the recycled coarse aggregate with natural sand and gravel. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/04B28B11/24B28B23/02B23P15/00
CPCB28B1/045B28B11/245B28B23/02B23P15/00
Inventor 孟二从费盈颖苏新余亚琳柳杨青张向冈
Owner SOUTHWEST UNIVERSITY
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