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Z-shaped steel pipe recycled concrete special-shaped column with perforated T-shaped ribs and manufacturing method

A technology for recycled concrete and special-shaped columns, which is applied to columns, piers, pillars, etc., can solve the problems of easy peeling of steel pipes and concrete, insufficient restraint capacity of core concrete, and unsatisfactory effects, so as to improve overall work performance and improve adhesion. Insufficient knot strength and easy construction

Pending Publication Date: 2021-07-13
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the column mainly bears the axial pressure, when the concrete-filled steel tube special-shaped column reaches the ultimate bearing capacity, the steel pipes at the corners undergo plastic deformation, and the steel pipes and concrete in the middle of each limb of the special-shaped column are prone to peeling off or local instability
Research shows that the main reason for the above technical problems is that the outer steel pipes have insufficient binding force on the core concrete.
In the actual application at the present stage, in order to make up for the insufficient confinement of the steel pipe to the core concrete, structural measures such as welding studs or rectangular ribs on the inner wall of the steel pipe are mainly used, which is labor intensive and the effect is not ideal

Method used

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  • Z-shaped steel pipe recycled concrete special-shaped column with perforated T-shaped ribs and manufacturing method
  • Z-shaped steel pipe recycled concrete special-shaped column with perforated T-shaped ribs and manufacturing method
  • Z-shaped steel pipe recycled concrete special-shaped column with perforated T-shaped ribs and manufacturing method

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Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, the T-shaped ribs evenly and equidistantly open round holes on the web (see image 3 ), the opening process such as Figure 6 Shown: First, cut from one end of the web along the predetermined dotted line, then cut from the other end of the web along the predetermined dotted line. After the cutting is completed, two webs ① and ② are produced, and the two webs ① and ② are staggered and docked, so that the trough of the ① web is aligned with the peak of the ② web, and then combined in the horizontal section of the adjacent crest (valley) At the place, the two webs ① and ② are welded to form by butt full penetration weld. The formed web with round holes is as follows: Figure 7 shown. In this embodiment, due to the thicker Z-shaped special-shaped column limbs, the T-shaped ribs with openings are welded to the inner walls of the two steel pipes opposite to the length direction of the limbs in a parallel manner (see figure 1 ), the T-rib spacing is 200...

Embodiment 2

[0038] In this embodiment, the T-shaped ribs have regular hexagonal holes evenly spaced on the web (see Figure 4 ), the opening process such as Figure 8 Shown: Cut from the right end of the web along the predetermined dotted line to produce two webs ① and ②, and stagger the two webs ① and ②, so that the half of the regular hexagonal hole on the ① web is aligned with the ② web There is half a regular hexagonal hole in the plate, and then, at the horizontal section where the two holes are connected, the two webs ① and ② are welded to form by using butt joint full penetration welds. The formed web with regular hexagonal holes is as follows: Figure 9 shown. In this embodiment, due to the small thickness of the Z-shaped special-shaped column limbs, the T-shaped ribs with openings are welded to the inner walls of the two steel pipes opposite to the length direction of the limbs in a staggered manner (see figure 2 ), the T-rib spacing is 150 mm, and the height of the T-rib web...

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Abstract

The invention discloses a Z-shaped steel pipe recycled concrete special-shaped column with perforated T-shaped ribs and a manufacturing method. The special-shaped column comprises a Z-shaped steel pipe framework, a T-shaped rib framework, a reinforcing hoop framework and full recycled concrete; the Z-shaped steel pipe framework is formed by welding a plurality of steel plates; the T-shaped rib framework is formed by welding two steel plates, holes are formed in a web plate, and the perforated T-shaped ribs are welded to the inner wall of the Z-shaped steel pipe in a parallel or staggered mode; the reinforcing hoop framework is a reinforcement cage formed by binding spiral stirrups and longitudinal bars; and coarse aggregate of the full recycled concrete is completely derived from waste concrete. In the scheme, the Z-shaped steel pipe and the reinforcing hoop can improve the bearing capacity of the full recycled concrete and promote the cyclic utilization range of the waste concrete; the perforated T-shaped ribs can improve the bonding performance of the steel pipe and the full recycled concrete and delay local buckling of the steel pipe; and meanwhile, the scheme can be prefabricated in a factory, a formwork is not needed during site construction, and the production efficiency and the quality of the fully recycled concrete are improved.

Description

technical field [0001] The invention relates to a building component, in particular to a Z-shaped concrete-filled steel tube special-shaped column using fully recycled concrete and open-hole T-shaped ribs, and belongs to the technical field of steel-concrete composite structures. Background technique [0002] With the rapid development of urban construction in my country, the reinforcement and repair of existing buildings, the continuous development and large-scale construction of new urban areas and residential quarters, and the new construction of municipal public facilities will generate a large amount of construction waste. In addition, every year in our country, a large number of building structures are demolished due to reaching the design service life. According to statistics, during the "Twelfth Five-Year Plan" period, the construction area demolished in my country is about 460 million square meters every year, and every 10,000 square meters of demolition projects wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34E04C3/32E04C5/06C04B28/00
CPCC04B28/00E04C3/32E04C3/34E04C5/0618C04B14/06C04B18/167C04B18/08C04B2103/302
Inventor 张向冈牛海成丁亚红王兴国陈旭徐金俊薛建阳孟二从杨健辉
Owner HENAN POLYTECHNIC UNIV