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How to remove the steel support

A steel support and channel steel technology, applied in excavation, construction, infrastructure engineering and other directions, can solve the problems of hoisting equipment unable to cover the foundation pit, affecting building construction efficiency, and long support removal time.

Active Publication Date: 2020-07-14
JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the support of steel structures, the connecting bolts between the parts are generally removed, and then the parts are recycled. In large foundation pits, because the arm length of the hoisting equipment cannot cover the entire area of ​​the foundation pit, for most Parts and components can only be moved manually or with auxiliary small transport equipment, which makes the removal of the support take a long time and affects the construction efficiency of the entire building

Method used

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  • How to remove the steel support
  • How to remove the steel support
  • How to remove the steel support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 1 , around the foundation pit is provided with surrounding protection piles 81, inside the surrounding protection piles 81 is provided with surrounding purlins 82, the steel support 10 is supported on the surrounding purlins 82, in this embodiment, the steel support 10 has two parallel The first main beam 13 is fixed with a first cross brace 12 between the two first main beams 13, the two first main beams 13 are made of first H-shaped steel, and the flange 15 of the first H-shaped steel is arranged horizontally, The upper side 16 of the upper flange of the first H-shaped steel forms the top surface, the first cross brace 12 is made of the second H-shaped steel, and the flange of the second H-shaped steel is arranged horizontally. A column 31 is arranged in the foundation pit, a steel corbel 35 is welded on the column 31 , a first joist 32 is erected on the steel corbel 35 , and the steel support 10 is movably supported on the first joist 32 . The steel suppo...

Embodiment 2

[0062] see Figure 13 , this embodiment is basically the same as Embodiment 1, the difference is that a support member for supporting the channel steel 113 is provided below the channel steel 113 as a temporary track, and in this embodiment, the support member is a flange horizontally arranged H-shaped steel A114, the flange of the H-shaped steel A114 is set horizontally, and the channel steel 113 is directly placed on the upper flange of the H-shaped steel A114. The addition of H-shaped steel A114 can effectively increase the bearing capacity of the temporary track, avoiding deformation under the pressure of the dismantling section and affecting the dismantling progress. It can be understood that in other embodiments, the support member can also use I-beam, pipe steel, and other truss-like structural members with supporting functions formed by plates or profiles.

Embodiment 3

[0064] This embodiment is basically the same as Embodiment 1, the difference is that the lifting methods for each disassembly section are different, please refer to Figure 10 , in this embodiment, the lifting device includes a door-shaped bracket 71 supported on the bottom surface B300 of the foundation pit, a winding device 73 fixed on the beam 72 of the door-shaped bracket 71, and a first winding device installed on the winding device. The suspension hook 74, the winding device 73 and the first suspension hook 74 jointly form a lifting part, and in step (2), the first suspension hook 74 is hooked on the two second main beams 23 of the first disassembly section A104 side flange, and do the same when removing the other disassembly sections. Of course, in other embodiments, the first hook 74 can also be hooked on the flanges of the lower sides of the two second main beams 23 of the first dismantling section A104, and the same method is used for dismantling other dismantling se...

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PUM

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Abstract

The invention discloses a steel support dismantling method. The steel support dismantling method comprises the following steps that (1) a steel support needing to be dismantled is divided into a plurality of to-be-dismantled sections in sequence; (2) a lifting device is installed below the first to-be-dismantled section, and a lifting part of the lifting device is fixed to the first to-be-dismantled section; (3) the first to-be-dismantled section is disconnected from the adjacent to-be-dismantled sections and stand columns, and then the first to-be-dismantled section is lifted to be separatedfrom the mounting position; (4) two temporary tracks are installed; (5) the first to-be-dismantled section is placed on the temporary tracks, and the lifting part is made to separate from the first to-be-dismantled section; (6) the first to-be-dismantled section is moved to the edge of a foundation pit along the temporary tracks and transferred; and (7) the rest of the to-be-dismantled sections are dismantled according to the steps (2)-(6). According to the dismantling method, as the operations of dismantling the steel support into parts and independently transferring the parts are removed, the workload is greatly reduced, the dismantling time of the steel support can be effectively shortened, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of protection of underground foundation pits, in particular to a method for removing steel supports located in foundation pits. Background technique [0002] During underground construction, in order to ensure the safety and efficiency of construction, it is generally necessary to set up foundation pit enclosure around the foundation pit, and set purlins and support beams inside the foundation pit enclosure to ensure the safety of underground construction. [0003] After the construction of the underground structure is completed, it is generally necessary to remove the support in the foundation pit to carry out the construction of the internal structure of the building, and to recycle and reuse the support to reduce construction costs. At present, the support is generally divided into steel-concrete Structures and steel structures. Destructive demolition is generally used for the support of steel-concrete structures,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 李仁民王许诺王涛陶晶晶刘飞
Owner JIANGSU DONGHENAN GEOTECHNICAL TECH CO LTD