阅读说明：本技术 建筑物砖混结构托换成框架结构的方法 (Method for underpinning building brick-concrete structure into frame structure ) 是由 张富 苏登信 明建强 于 2019-09-26 设计创作，主要内容包括：本发明公开了建筑物砖混结构托换成框架结构的方法,包括下列步骤：步骤1：进行地基加固和基础托换施工；步骤2：进行新增混凝土框架梁柱托换砖墙施工；在新增的托换框架梁柱体系达到设计强度要求后,拆除被托换墙体,完成对既有建筑砖墙的托换过程；步骤3：在混凝土框架梁柱结构体系施工中采用逆作工艺。本发明具有节约土地、节约社会资源、投资少、见效快等优点。(The invention discloses a method for underpinning a brick-concrete structure of a building into a frame structure, which comprises the following steps: step 1: carrying out foundation reinforcement and foundation underpinning construction; step 2: carrying out construction of replacing the brick wall by the beam column support of the newly added concrete frame; after the newly added underpinning frame beam column system meets the design strength requirement, the underpinned wall is dismantled, and the underpinning process of the existing building brick wall is completed; and step 3: the reverse construction process is adopted in the construction of a concrete frame beam column structure system. The invention has the advantages of land saving, social resource saving, low investment, quick effect and the like.)

1. The method for underpinning the brick-concrete structure of the building into the frame structure is characterized in that: comprises the following steps:

step 1: carrying out foundation reinforcement and foundation underpinning construction;

step 2: carrying out construction of replacing the brick wall by the beam column support of the newly added concrete frame; after the newly added underpinning frame beam column system meets the design strength requirement, the underpinned wall is dismantled, and the underpinning process of the existing building brick wall is completed;

and step 3: the following reverse construction process is adopted in the construction of a concrete frame beam column structure system:

firstly, beam column steel reinforcement frameworks are arranged under a floor slab of an original structure and on the side face of a wall body of the original structure; then an outer template and an inner template for pouring the column and the beam are erected, and the inner template and the outer template are positioned on the outer side of the beam column steel reinforcement framework and are fixedly connected through bolts; pouring concrete of the column and the beam; constructing a new frame beam column system layer by layer, and dismantling the underpinned brick wall of the original structure after the new frame beam column system completely reaches the designed bearing capacity; finally, a new frame structure system consisting of the combined frame columns, the underpinning beams and the original structure floor slab is formed.

2. The method for underpinning a building brick and concrete structure into a frame structure according to claim 1, wherein: the step 1 is specifically to transform a rigid brick bar foundation into a flexible under-column bar foundation by a method of embedding bars, drilling holes and penetrating bars to be matched with pouring concrete under the condition of not damaging an original brick masonry bar foundation.

3. Method for underpinning a building brick-and-concrete structure into a frame structure according to claim 1 or 2, characterized in that: the brick wall is underpinned into the frame post and before the structure is completely underpinned into the frame structure, a transition support system is arranged.

4. A method of underpinning a building brick and concrete structure into a frame structure according to claim 3 wherein: and 2, installing beam-column reinforcing steel bars under the existing structural floor slab, erecting a underpinning frame beam-column template, and pouring to complete the underpinning frame beam-column structural system by combining the methods of drilling and chiseling holes on the original wall and floor slab.

5. The method of underpinning a building brick and concrete structure into a frame structure according to any one of claims 1, 2 or 4, characterized in that: the underpinning process of underpinning the brick wall into the frame column adopts the sequence from bottom to top, firstly reinforcing steel bars are fixed with a foundation, a hole is formed in each floor, the reinforcing steel bars of the column are lifted to a roof from the first foundation, then the wall body to be dismantled is dismantled layer by layer in sequence from the bottom, the reinforcing steel bars of underpinning beams of each layer, an inner formwork and an outer formwork are reserved, the construction of the concrete bottom layer column of the pouring column is finished, the construction of the second-layer column and the third-layer column is carried out in sequence until all the underpinned frame columns are completely completed, and the construction is finished.

6. The method of underpinning a building brick and concrete structure into a frame structure according to any one of claims 1, 2 or 4, characterized in that: the inner walls of the inner template and the outer template are correspondingly provided with a plurality of nut seats.

Technical Field

The invention relates to the technical field of building construction, in particular to a method for underpinning a brick-concrete structure of a building into a frame structure.

Background

With the enhancement of comprehensive national strength and the development of market economy in China, the construction engineering in China begins to enter the development period of newly building, reconstructing and maintaining. Firstly, from the social perspective at the present stage, the safety and living environment of a large number of old houses built after being built in China are increasingly difficult to meet the requirements of the existing standard of living and the sustainable development of society of people, and some old houses even have serious potential safety hazards. Secondly, with the acceleration of the industrialization process in China, the adjustment of the industrial structure, the updating of equipment, the updating of production technology and the like are frequent, and the functions of the house also need to adapt to the changes.

The existing multi-layer brick-concrete structure building with the street-fronting is transformed to adapt to new functional requirements of people, the commercial requirements of continuous development and change are met, compared with the existing building which is dismantled for reconstruction, the building with the street-fronting multi-layer brick-concrete structure building has the advantages of no land acquisition, no removal, land and social resource saving, less investment and quick response, the capability of the existing building adapting to the market development and change is enhanced, the use efficiency of the existing building with the street-fronting multi-layer brick-concrete structure is improved, and the social economic development is promoted to a certain extent.

Disclosure of Invention

The invention aims to provide a method for underpinning a brick-concrete structure of a building into a frame structure, which saves land, social resources, investment and effect quickly.

The invention provides a method for underpinning a brick-concrete structure of a building into a frame structure, which comprises the following steps:

step 1: carrying out foundation reinforcement and foundation underpinning construction;

step 2: carrying out construction of replacing the brick wall by the beam column support of the newly added concrete frame; after the newly added underpinning frame beam column system meets the design strength requirement, the underpinned wall is dismantled, and the underpinning process of the existing building brick wall is completed;

and step 3: the following reverse construction process is adopted in the construction of a concrete frame beam column structure system:

firstly, beam column steel reinforcement frameworks are arranged under a floor slab of an original structure and on the side face of a wall body of the original structure; then an outer template and an inner template for pouring the column and the beam are erected, and the inner template and the outer template are positioned on the outer side of the beam column steel reinforcement framework and are fixedly connected through bolts; pouring concrete of the column and the beam; constructing a new frame beam column system layer by layer, and dismantling the underpinned brick wall of the original structure after the new frame beam column system completely reaches the designed bearing capacity; finally, a new frame structure system consisting of the combined frame columns, the underpinning beams and the original structure floor slab is formed.

The invention has the following effects:

the setting of interior template, exterior sheathing can play the effect of template when the beam column is pour, need not to dismantle again simultaneously, and with concrete etc. combine together, pour the completion back, can play the effect of decorating room, outer wall.

Compared with the reconstruction of the existing building by dismantling, the method has the characteristics of no land acquisition, no removal, land and social resource saving, less investment and quick response, enhances the capability of the existing building to adapt to the market development and change, improves the use efficiency of the existing street-approaching building, and promotes the social and economic development to a certain extent.

Preferably, the step 1 is to transform the rigid brick bar foundation into the flexible bar foundation under the column under the condition of not damaging the original brick masonry bar foundation by a method of embedding bars, drilling holes and penetrating bars to be matched with pouring concrete. Compared with a brick foundation, the strip foundation is stronger in structural performance and load capacity and safer.

Preferably, the brick wall underpinning frame column is provided with a transition support system before the structure is completely underpinned into the frame structure. The brick wall is stably replaced into the frame through the transition support system.

Preferably, the step 2 is to install the frame beam column reinforcing steel bars under the existing structural floor slab, erect the underpinning frame beam column template, and pour the underpinning frame beam column structural system by combining the methods of drilling and chiseling holes on the original wall and floor slab.

Preferably, the underpinning process of underpinning the brick wall into the frame column adopts a sequence from bottom to top, firstly reinforcing steel bars are fixed with a foundation, a hole is formed in each floor, the reinforcing steel bars of the column are lifted from the first foundation to a roof, then the wall body to be dismantled is dismantled layer by layer in sequence from the bottom, the reinforcing steel bars of underpinned beams of each layer are reserved, an inner formwork and an outer formwork are reserved, the construction of the concrete bottom column of the pouring column is finished, the construction of the second layer column and the third layer column is sequentially carried out until all the underpinned frame columns are completed, and the construction is finished. By the operation, all parts of the underpinned frame structure are stable in structure, the construction efficiency and the construction quality are greatly improved, and the construction period is shortened.

Preferably, a plurality of nut seats are correspondingly arranged on the inner walls of the inner template and the outer template. So set up, threaded connection between convenient and fast realization inner formword, the exterior sheathing is fixed and the installation is dismantled.

In conclusion, the method of the invention recycles the original structural members to the utmost extent, maintains the building characteristics and the building style of the original building, and changes the brick-concrete structure into the frame structure, thereby effectively solving the problems of low land utilization rate, small single space, poor rigidity, low anti-seismic performance, low transformation performance and the like of the brick-concrete structure, and realizing the conversion of the structural form from the brick-concrete structure to the frame under the condition of no need of dismantling and reconstruction of the existing brick-concrete structure.

Drawings

FIG. 1 is a schematic step diagram of a method for underpinning a brick-concrete structure into a frame structure of a building according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an inner template and an outer template in an embodiment of the present invention;

FIG. 3 is a diagram illustrating the inner and outer forms of the present invention in a fire;

fig. 4 is a schematic structural view of the wave-shaped asbestos plate in fig. 2.

Detailed Description

The following is further detailed by the specific embodiments:

the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference numerals in the drawings of the specification include: the hot melt adhesive sealing structure comprises an outer template 1, a base plate 2, an electronic product hot melt adhesive 3, a corrugated asbestos plate 4, an iron sealing ring 5, a sealing plug 6, an aluminum sulfate solution 7 and a wave trough 8.