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Annular multi-supporting-point adjustable profile steel support changing system and construction method

A support point and adjustable technology, applied in construction, building maintenance, building construction, etc., can solve the problems of increasing construction costs, demolition and redo, not satisfying environmental protection, etc., to achieve convenient and fast construction, and small scope of demolition and modification. Effect

Pending Publication Date: 2022-07-22
CHINA CONSTR FIRST DIV GROUP CONSTR & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual construction and renovation, due to changes in the load of the upper structure, the frame columns of the lower structure need to be removed and redone, while the beams and slabs do not need to be removed.
The current conventional method needs to dismantle the substructure together and then re-construct according to the original drawings. This method greatly increases the construction cost, is very time-consuming, and does not meet the requirements of environmental protection.

Method used

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  • Annular multi-supporting-point adjustable profile steel support changing system and construction method
  • Annular multi-supporting-point adjustable profile steel support changing system and construction method
  • Annular multi-supporting-point adjustable profile steel support changing system and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] In this example, the demolition and reinforcement of large and old complex structural columns are taken as a construction case. figure 1 The middle structural beam 10 and the structural column 9 constitute the basic structural stress system. Since the structural column 9 is severely corroded due to the change of the upper load and the structural column 9 itself needs to be dismantled and rebuilt, the column section is enlarged and concrete is poured again. The floor structure above the support area of ​​the structural column 9 is the area for people to flow, and the equipment in the adjacent rooms must be in normal operation. out. Due to the special needs of the building properties of the complex, the overall building renovation cannot affect the normal operation of the merchants in the building, and the electromechanical equipment room in the basement needs to operate normally, and the renovation project meets the requirements for environmental protection and safety. ...

Embodiment 2

[0048] In a preferred embodiment, the adjustable section steel bracing system with multiple support points in the ring also includes a combined operation platform 6, and the combined operation platform 6 is fixed on the inner side of the uppermost section of the section steel column 2 through the second connecting plate 61, and the combined operation platform 6 is combined. The operating platform 6 includes a vertical pole 62 and an oblique support 63 .

[0049] Further, in order to reduce the impact of dust during concrete construction, a dense mesh type dust screen 23 is hung on the outer side of the profiled steel column 2, and a spray water pipe 24 is welded on the inner side to achieve the purpose of dust reduction and protection. The combined operation platform 6 solves the difficulty of the worker's working face and the problem of rebuilding the operation frame, and the spray water pipe 24 can be changed to a maintenance water pipe under the construction environment agai...

Embodiment 3

[0051] The invention also provides a construction method for dismantling and modifying a frame column structure, comprising the following steps:

[0052] Step S1 , according to the actual construction situation, measure and calculate the height of the structural floor, the position and cross-sectional characteristics of the structural beam 10 , and the cross-sectional size of the structural column 9 to be demolished to select an appropriate force-bearing member.

[0053] Step S2, install the above-mentioned adjustable section steel bracing system with multiple support points at the position of the structural column 9, which specifically includes:

[0054] In step S21, multiple groups of profiled steel columns 2 are arranged at equal intervals in the circumferential direction around the structural column 9, and the profiled steel columns 2 are arranged directly below the structural beam 10. The section steel column 2 is fixedly connected through the sleeve 3 along the vertical ...

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Abstract

The invention discloses an annular multi-support point position adjustable profile steel support changing system which comprises an annular sectional type track, a beam side clamp assembly, a beam side clamp assembly, a beam side clamp assembly, a beam side clamp assembly and a beam side clamp assembly, and the annular sectional type track is detachably arranged below a structural beam connected with a structural column with the structural column to be dismantled as the circle center; the multiple groups of profile steel stand columns are arranged along the annular sectional type track at intervals and are arranged under the structural beam, the number of each group of profile steel stand columns is equal, each group of profile steel stand columns comprises at least two sections, and every two adjacent sections of profile steel stand columns are fixedly connected in the vertical direction. By means of the adjustable profile steel support changing system, only main vertical stress components need to be disassembled and changed, the disassembling and changing range is small, the influence of the direction of a special structural beam is avoided, and the safety of the whole structure is not influenced.

Description

technical field [0001] The invention relates to the technical field of reconstruction of reinforced concrete frame structures, in particular to an adjustable section steel bracing system and a construction method with annular multi-support points. Background technique [0002] With the continuous improvement of people's requirements for building quality, the renovation of old residential areas is imperative. In renovation projects, only the upper structure is to be reconstructed, and the lower structure does not need to be demolished. However, in the actual construction and renovation, due to changes in the upper structure load, etc., the lower structure frame columns need to be removed and redone, while the beams and slabs do not need to be removed. Now the conventional practice is to dismantle the substructure together and then re-construct according to the original drawings, which greatly increases the construction cost, is very time-consuming, and does not meet the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/04E04G23/02
CPCE04G23/04E04G23/0218
Inventor 张泽玉杨同林张洪孙江龙詹必雄任耀辉刘飞龙张和罗俊君
Owner CHINA CONSTR FIRST DIV GROUP CONSTR & DEV
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