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An anchor-less multifunctional pre-embedded channel steel and an anchoring installation method

An installation method and technology of pre-embedded grooves, which are applied in the directions of buildings and building structures, can solve the problem that the tensile properties and fatigue properties of pre-embedded grooves are difficult to achieve high, and the technology of pre-embedded grooves is difficult to use on a large scale. The high cost of the buried channel can achieve the effect of enhancing the installation application, reducing the installation cost and reducing the processing cost.

Active Publication Date: 2021-06-04
WUHAN RES INST OF MATERIALS PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the structural reasons of the traditional embedded channel, the tensile performance of the notch of the channel near the anchor is better than that of the notch far away from the anchor. In order to meet the design requirements, it is necessary to adjust the anchor The number of anchor rods is used to make the performance of each stressed point of the channel meet the design requirements. Even so, the stress of each point on the channel is still different. When the force is applied, the deformation of the channel opening is inconsistent. It is difficult to meet the installation requirements of consistent slot deformation. Therefore, the traditional embedded channel technology solution has the problem of uneven force and deformation at each point on the channel, and there is a risk of instability.
[0004] The traditional pre-buried channel mainly bears force through the notch, and the material used in the channel is generally Q345B. This structure and material properties itself determine that the tensile and fatigue properties of the pre-buried channel are difficult to achieve. high level
[0005] For traditional pre-embedded channel anchor bolt fixing, no matter using lower-cost riveting technology or more stable welding technology, the anchor bolt fixing cost is always an important cost of the pre-embedded channel except for the channel, accounting for the About 30% of the processing cost, coupled with the high-cost hot-rolled technology used in the pre-embedded channels for rail transit, leads to the high overall cost of the pre-embedded channels. main reason to use

Method used

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  • An anchor-less multifunctional pre-embedded channel steel and an anchoring installation method
  • An anchor-less multifunctional pre-embedded channel steel and an anchoring installation method
  • An anchor-less multifunctional pre-embedded channel steel and an anchoring installation method

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Experimental program
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Effect test

Embodiment 1

[0041] Embodiment 1 (when the design tensile and shear load bearing capacity is small)

[0042] The installation diagram of the anchoring installation method in this embodiment is shown in figure 1 , the anchoring device used in the anchoring installation method includes embedded channel steel 1, single head bolt 9, installation component 8 and toothed wing nut 7, such as Figure 10 As shown, the embedded channel steel 1 includes a tank body and a main chute 101 arranged on the tank body, waist structures are arranged on both sides of the tank body, and the embedded channel steel 1 passes through the gap between the waist structure and the concrete 10. Pre-buried and anchored between the main chute 101, the notch of the main chute 101 is retracted, and the inward load-bearing part 104 is formed at the notches on both sides of the main chute 101, and the inner side of the load-bearing part 104 is provided with anti-slip teeth 105, The inner top of the main chute 101 is provide...

Embodiment 2

[0044] Embodiment 2 (when the design tensile bearing capacity is large, there is no requirement for the shear bearing capacity)

[0045] The installation diagram of the anchoring installation method in this embodiment is shown in figure 2 , the anchoring device used in the anchoring installation method includes embedded channel steel 1, T-bolt 3, installation assembly 8 and fastening nut 6, the embedded channel steel 1 of this embodiment is the same as that in embodiment 1, and T-shaped chute 2 is adopted It is integrated with the tank body.

[0046] The pre-embedded channel steel 1 is pre-embedded and anchored in the concrete 10. When the installation assembly 8 is fixed, the T-bolt 3 is first installed in the T-shaped chute 2, moved to the position to be installed, and then the installation assembly 8 is set on the threaded end of the T-shaped bolt 3, and the fastening nut 6 is put on the threaded end of the T-shaped bolt 3, and the mounting assembly 8 is fixed by the fast...

Embodiment 3

[0047] Embodiment 3 (when design tension and shear bearing capacity are all big)

[0048] The installation diagram of the anchoring installation method in this embodiment is shown in image 3 , the anchoring device used in the anchoring installation method includes embedded channel steel 1, T-bolt 3, installation assembly 8, fastening nut 6, fixing nut 4 and toothed butterfly spacer 5, and the embedded channel steel 1 and As in Embodiment 1, the T-shaped chute 2 is integrated with the groove body.

[0049] The pre-embedded channel steel 1 is pre-embedded and anchored in the concrete 10. When the installation assembly 8 is fixed, before the T-shaped bolt 3 is installed in the T-shaped chute 2, the fixing nut 4 and The toothed butterfly pad 5, and then install the T-bolt 3 in the T-shaped chute 2, move to the position where it needs to be installed, and then tighten the fixing nut 4 to press the toothed butterfly pad 5 on the load-bearing part 104 , so as to fix the T-bolt 3, ...

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Abstract

The invention discloses an anchor-less multifunctional pre-embedded channel steel and an anchoring installation method. The pre-embedded channel steel includes a trough body and a main chute arranged on the trough body, and the pre-embedded channel steel passes through the The waist structure is anchored with concrete pre-buried. The notch of the main chute is retracted at the notches on both sides to form an inward load-bearing part. The inner side of the load-bearing part is equipped with anti-slip teeth. The T-shaped chute can also be set separately, that is, the top of the main chute is provided with an auxiliary chute with a tapered cross-section, and an auxiliary slider with a cross-sectional shape matching it is installed in the auxiliary chute, and the auxiliary slider is close to the main slide. One side of the notch of the slot is provided with a T-shaped chute. According to different load requirements of the installation components, the present invention selects T-shaped bolts, fastening nuts, fixed nuts, single-head bolts, toothed butterfly pads and toothed butterfly nuts for installation and fixing. The invention has low installation cost, greatly improved tensile, longitudinal shear and fatigue properties, makes the overall anchoring force of the channel consistent, and improves the overall stability of the channel.

Description

technical field [0001] The invention belongs to the field of engineering construction, and relates to a pre-buried channel installation technology, in particular to an anchor-less multifunctional pre-buried channel steel and an anchoring installation method. Background technique [0002] The pre-embedded chute technology refers to the pre-embedding of C-shaped channel steel with anchor rods in the concrete during the concrete pouring process, and the cables, pipelines, equipment, etc. are fixed on the concrete through T-shaped bolts during the later electromechanical installation. Compared with the traditional drilling and planting bars or expansion bolts, the design, construction and installation of the pre-embedded chute have high precision, which can greatly improve the efficiency of equipment installation in the later stage; because the pre-embedded chute causes little damage to the structure, the structure itself can be improved. The integrity and durability of the pre-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/41
CPCE04B1/4128E04B1/4164
Inventor 万桥陈亚平张松韦雨齐屈凯文姜新华
Owner WUHAN RES INST OF MATERIALS PROTECTION
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