Method for reinforcing old buildings

Abstract

The application provides an old building reinforcing method, which reinforces the building foundation from the building periphery by connecting new concrete beams and concrete short walls with the original structure, avoids construction of excavation reinforcement in the building interior, can ensure that the building interior is not excessively affected during reinforcement, and can achieve inductive construction through adjustment of working time; and can solve the problem that when the old building is reinforced, the building normal use is affected by soil excavation or internal lining wall reinforcement in the building interior.

Description

TECHNICAL FIELD

[0001] The application relates to an old building reinforcement method. BACKGROUND

[0002] In a conventional old building foundation reinforcement construction method, new concrete beams are added on both sides of the foundation, which causes excavation work on the outside and the inside of the building, affecting the normal use of the building SUMMARY

[0003] The application aims to provide an old building reinforcement method.

[0004] To solve the above problems, the application provides an old building reinforcement method, which comprises the following steps:

[0005] Earth excavation and support construction are performed on the periphery of the original brick wall of the building;

[0006] In the earth excavation and support construction area, the steel bars of the new concrete foundation beam and the U-shaped steel bars of the new concrete short wall on the upper part of the steel bars of the new concrete foundation beam are bound, a lower cavity is chiseled at the connecting part of the original brick wall of the building and the original foundation slab, the lower cavity is used for subsequent manufacturing of a lower concrete dowel of the new concrete foundation beam, the lower dowel steel bars are bound in the lower cavity and are anchored into the area to be formed with the new concrete foundation beam, and the new concrete foundation beam and the lower concrete dowel are integrally poured, wherein a pile pressing hole of a static pressure anchor rod pile is reserved on the new concrete foundation beam during pouring;

[0007] The surface of the original brick wall is chiseled at the position of the new concrete short wall on the outside of the original brick wall, the longitudinal steel bars of the new concrete short wall are bound at the position of the new concrete short wall, and the longitudinal steel bars are fixed on the U-shaped steel bars, an upper cavity is chiseled on the original brick wall, the upper cavity is used for manufacturing an upper concrete dowel of the new concrete short wall to be formed, the steel bars of the upper concrete dowel are bound in the upper cavity and are inserted into the area to be formed with the new concrete short wall, and the new concrete short wall and the upper concrete dowel are integrally poured.

[0008] After the construction of the static pressure anchor rod pile at the position of the pile pressing hole, the pile pressing hole is plugged, and finally the earth is backfilled to complete the foundation reinforcement construction of the building.

[0009] Further, in the above method, the lower cavity is chiseled at the connecting part of the original brick wall of the building and the original foundation slab, comprising the following steps:

[0010] At the connecting part of the original brick wall of the building and the original foundation slab, a lower cavity with a width of 200 mm, a height of 250 mm and a depth of 180 mm is chiseled at an interval of 1000 mm.

[0011] Further, in the above method, the pile hole is arranged at intervals on the new concrete foundation beam.

[0012] Further, in the above method, the lower part of the original foundation pile cap is a plain concrete layer.

[0013] Further, in the above method, the steel bars of the new concrete foundation beam are bound, comprising:

[0014] Inserting a first embedded steel bar in the original foundation pile cap;

[0015] Binding the steel bars of the new concrete foundation beam;

[0016] Connecting the steel bars of the new concrete foundation beam with the first embedded steel bar.

[0017] Further, in the above method, the upper cavity is chiseled on the original brick wall, comprising:

[0018] Chiseling a 200mm wide*150mm high*180mm deep upper cavity on the original brick wall at an interval of 1000mm.

[0019] Further, in the above method, the position of the upper concrete pin key is staggered with the position of the lower concrete pin key.

[0020] Further, in the above method, before the new concrete short wall and the upper concrete pin key are integrally poured, further comprising:

[0021] Using a second embedded steel bar with a depth of 180mm and an interval of 300mm to connect the new concrete short wall and the structural column of the original brick wall at the position corresponding to the structural column of the original brick wall.

[0022] Further, in the above method, the second embedded steel bar has a depth of 180mm and an interval of 300mm.

[0023] Further, in the above method, the height of the new concrete short wall is less than or equal to the elevation of the first floor window sill of the building.

[0024] Compared with the prior art, the present application connects the new concrete beam and the concrete short wall with the original structure to reinforce the building foundation from the outside of the building, avoids excavation and reinforcement construction in the building, can ensure that the building is not affected too much during reinforcement, and can achieve inconsiderate construction through adjustment of working time; and can solve the problem that when old buildings are reinforced, excavation of soil inside the building or reinforcement of the inner lining wall will affect normal use of the building. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of a new concrete foundation beam according to an embodiment of the present application;

[0026] Figure 2 is a layout diagram of pile hole of an embodiment of the present application;

[0027] Figure 3 is a reinforcement diagram of an old building of an embodiment of the present application;

[0028] Figure 4 is a connection diagram of a new concrete foundation beam and an original foundation pile cap of an embodiment of the present application;

[0029] Figure 5 is a connection diagram of a new concrete foundation beam and an original brick wall of an embodiment of the present application;

[0030] Figure 6 is a connection diagram of a new concrete short wall and an original brick wall of an embodiment of the present application;

[0031] Figure 7 is a connection diagram of a new concrete short wall and a construction column of an original brick wall of an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0033] As shown in Figure 1 and 3 , the present application provides a reinforcement method for an old building, comprising:

[0034] Step S1, the present application adopts a single-face reinforcement method for building foundation to reinforce: the earthwork excavation and support construction are performed on the periphery of the original brick wall 1 of the building;

[0035] Step S2, in the area of the earthwork excavation and support construction, the steel bars of the new concrete foundation beam 2 and the U-shaped steel bars 13 of the new concrete short wall 4 on the upper part of the steel bars of the new concrete foundation beam are bound, and in the connection part of the original brick wall 1 of the building and the original foundation pile cap 5, as shown in Figure 5 , 1000mm interval, 200mm wide*250mm high*180mm deep lower cavities are chiseled out, the lower cavities are used for subsequent production of the lower concrete pin key 6 of the new concrete foundation beam, the lower pin key steel bars 12 are bound in the lower cavities, and the lower pin key steel bars are anchored into the area to be formed of the new concrete foundation beam 5, the new concrete foundation beam 2 and the lower concrete pin key 6 are integrally poured, and the pile hole 7 of the static pressure anchor pile 8 is reserved on the new concrete foundation beam during pouring;

[0036] Preferably, as shown in Figure 2 , the pile holes 7 are arranged at intervals on the new concrete foundation beam 2;

[0037] As Figure 3 shown, the lower part of the original foundation platform is a plain concrete layer 9.

[0038] Preferably, as Figure 4 shown, the steel bars of the newly added concrete foundation beam are bound, including:

[0039] Step S21, inserting the first embedded steel bar 10 in the original foundation platform;

[0040] Step S22, binding the steel bars of the newly added concrete foundation beam 2;

[0041] Step S23, connecting the steel bars of the newly added concrete foundation beam 2 with the first embedded steel bar.

[0042] Step S3, as Figure 6 shown, chiseling the surface of the original brick wall 1 at the position of the newly added concrete short wall on the outer side of the original brick wall, binding the longitudinal steel bars 14 of the newly added concrete short wall 4 at the position of the newly added concrete short wall, and fixing the longitudinal steel bars 14 on the U-shaped steel bars, chiseling an upper cavity with a width of 200mm, a height of 150mm and a depth of 180mm on the original brick wall at an interval of 1000mm, the upper cavity is used for making the upper concrete dowel 11 of the newly added concrete short wall to be formed, the position of the upper concrete dowel is staggered with the position of the lower concrete dowel on the original brick wall, binding the steel bars of the upper concrete dowel to be formed in the upper cavity, and inserting the steel bars of the upper concrete dowel into the area of the newly added concrete short wall to be formed, and integrally pouring the newly added concrete short wall and the upper concrete dowel;

[0043] Preferably, as Figure 7 shown, the newly added concrete short wall is connected with the structural column 16 of the original brick wall by the second embedded steel bar 15 with a depth of 180mm and an interval of 300mm at the position of the structural column of the original brick wall;

[0044] Preferably, the height of the newly added concrete short wall is less than or equal to the elevation of the window sill of the first floor of the building.

[0045] Step S4, after the construction of the static pressure anchor pile 8 at the position of the pile pressing hole 7, the pile pressing hole is sealed, and finally the earthwork is backfilled to complete the construction of the building foundation reinforcement.

[0046] The application can reinforce the building foundation from the building periphery by connecting the newly added concrete beam and the concrete short wall with the original structure, avoid the construction of excavation and reinforcement in the building interior, ensure that the building interior is not affected too much during the reinforcement period, and achieve no-sense construction by adjusting the working time; and can solve the problem that the excavation of earthwork or the reinforcement of the lining wall in the building interior will affect the normal use of the building when the old building is reinforced.

[0047] The various embodiments described in this specification are presented by way of example, and each embodiment is not necessarily composed of all features described with respect to other embodiments. Each embodiment described in this specification can be combined with one or more other embodiments to produce an embodiment that is not explicitly described but that is nonetheless within the scope of the application.

[0048] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A method of reinforcing an old building, characterized by, The method comprises the following steps: Excavating and supporting the earthwork outside the original brick wall of the building; In the area of the earthwork excavation and support construction, the steel bars of the newly added concrete foundation beam and the U-shaped steel bars of the newly added concrete short wall on the upper part of the newly added concrete foundation beam are bound, a lower cavity is chiseled at the connecting part of the original brick wall and the original foundation slab, the lower cavity is used for subsequent manufacturing of the lower concrete dowel of the newly added concrete foundation beam, the lower dowel steel bars are bound in the lower cavity, and the lower dowel steel bars are anchored into the area of the newly added concrete foundation beam to be formed, and the newly added concrete foundation beam and the lower concrete dowel are integrally poured, wherein a pile pressing hole of a static pressure anchor rod pile is reserved on the newly added concrete foundation beam during pouring; The surface of the original brick wall is chiseled at the position of the newly added concrete short wall outside the original brick wall, the longitudinal steel bars of the newly added concrete short wall are bound at the position of the newly added concrete short wall, and the longitudinal steel bars are fixed on the U-shaped steel bars, an upper cavity is chiseled on the original brick wall, the upper cavity is used for manufacturing the upper concrete dowel of the newly added concrete short wall to be formed, the steel bars of the upper concrete dowel are bound in the upper cavity, and the steel bars of the upper concrete dowel are inserted into the area of the newly added concrete short wall to be formed, and the newly added concrete short wall and the upper concrete dowel are integrally poured; After the construction of the static pressure anchor rod pile at the position of the pile pressing hole, the pile pressing hole is plugged, and finally the earthwork is backfilled to complete the building foundation reinforcement construction; Chiseling a lower cavity at the connecting part of the original brick wall and the original foundation slab, comprising: Chiseling a lower cavity with a width of 200mm, a height of 250mm and a depth of 180mm at the connecting part of the original brick wall and the original foundation slab of the building at an interval of 1000mm; Chiseling an upper cavity on the original brick wall, comprising: Chiseling an upper cavity with a width of 200mm, a height of 150mm and a depth of 180mm on the original brick wall at an interval of 1000mm; The position of the upper concrete dowel and the position of the lower concrete dowel are staggered on the original brick wall; Before integrally pouring the newly added concrete short wall and the upper concrete dowel, further comprising: Connecting the structural column of the newly added concrete short wall and the original brick wall by using a second planting steel bar with a depth of 180mm and an interval of 300mm at the position of the structural column of the original brick wall on the newly added concrete short wall.

2. The method for reinforcing an old building according to claim 1, wherein The pile pressing holes are arranged at intervals on the newly added concrete foundation beam.

3. The method of reinforcing an old building according to claim 1, wherein The lower part of the original foundation slab is a plain concrete layer.

4. The method of reinforcing an old building according to claim 1, wherein Binding the steel bars of the newly added concrete foundation beam, comprising: Inserting a first planting steel bar into the original foundation slab; Binding the steel bars of the newly added concrete foundation beam; Connecting the steel bars of the newly added concrete foundation beam and the first planting steel bar.

5. The method for reinforcing an old building according to Claim 1, wherein The height of the newly added concrete short wall is less than or equal to the elevation of the window sill of the first floor of the building.

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