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Construction method of whole reverse replacement of structure

A construction method and integrated technology, applied in building construction, building maintenance, construction, etc., can solve the problems of large lateral unloading of external walls, large cantilever length of external walls, wall damage, etc. The effect of reducing the length of the wall cantilever, reducing the amount of single unloading, and shortening the time difference

Inactive Publication Date: 2010-09-15
SHANGHAI CONSTR NO 1 GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the case of retaining the original outer wall in the historic protection building, this method has the following problems: the overall removal of the original structure will cause the external wall to unload too much in a single lateral direction, which will cause serious damage to the wall, and the new structure has not yet been formed at this time. If the cantilever length of the reserved external wall is too large, it is easy to lose stability, and additional support is required for the external wall

Method used

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  • Construction method of whole reverse replacement of structure
  • Construction method of whole reverse replacement of structure
  • Construction method of whole reverse replacement of structure

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and with the five-layer structure containing roof renovation project is example to further illustrate the invention construction method.

[0020] As shown in Fig. 1, the construction method for reverse replacement of the whole structure of the present invention comprises the following steps:

[0021] (1), if Figure 1a As shown, first construct the first floor: demolish the first layer of decorative layers, remove the original floor 2 of the second floor, and temporarily retain the original beams, load-bearing columns 1 and original inner walls 3 on the upper floor;

[0022] (2), set up the bent frame to the bottom of the lower beam of the original floor slab on the second floor, and carry out the construction of the outer wall reinforcement layer 8 of the first floor and the new frame column 7 of this floor at the same time;

[0023] (3) Remove the original second-floor beams, set up formwork, bind steel bars, and pour ne...

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Abstract

The invention discloses a construction method of whole reverse replacement of a structure, comprising the following steps: (1) constructing N numbered layers: removing the N+1st layer of original floorslab, and temporarily reserving an original girder, a heel post and an inner wall on the upper layer thereof; (2) building a bent frame to the lower girder bottom of the N+1st layer of the original floorslab, and carrying out construction on an outer wall reinforced layer and the new frame column of the layer; (3) removing the N+1st layer of the original floorslab, erecting form, binding reinforcing steel bars, and pouring the N+1st layer of new frame girder and the floorslab; (4) repeating the above steps, and upwards constructing layer by layer; and (5) after capping the new frame girder, removing the temporarily reserved original heel post and internal wall from top to bottom. The invention can reduce external wall side once unloading amount caused by integral removal of the original structure, shortens the time difference between old structure removal and new structure formation, does not damage the reserved external wall and saves extra timbering cost for the external wall; and old structure removal and new structure construction are carried out simultaneously so as to shorten the construction period.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a reverse replacement construction method for a whole structure, in particular to a structural replacement method for retaining building reconstruction. Background technique [0002] When the overall structure of the old building is replaced and reconstructed, the original structure is often demolished from top to bottom, and then the new structure is constructed layer by layer. For the case of retaining the original outer wall in the historical protection building, this method has the following problems: the overall removal of the original structure will cause the external wall to unload too much in a single lateral direction, which will cause serious damage to the wall, and the new structure has not yet been formed at this time. If the cantilever length of the reserved external wall is too large, it is easy to lose stability, and additional support is req...

Claims

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Application Information

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IPC IPC(8): E04G23/02E04G23/08
Inventor 凌旭辉徐杨斌陈国成
Owner SHANGHAI CONSTR NO 1 GRP
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