Old building reinforcing method

Abstract

According to the old building reinforcing method provided by the invention, the building foundation is reinforced from the periphery of the building by connecting the newly added concrete beam and the concrete short wall with the original structure, so that the construction of excavation and reinforcement in the building is avoided, and the situation that the interior of the building is not excessively influenced in the reinforcing period can be ensured; the non-sensitive construction can be realized by adjusting the working time; the problem that when foundation reinforcement is conducted on an old building, excavation of earth in the building or reinforcement of an inner lining wall on the inner side can affect normal use of the building can be solved.

Description

Technical Field

[0001] The invention relates to a method for reinforcing old buildings. Background Art

[0002] In the conventional construction practice of old building foundation reinforcement, new concrete beams are added on both sides of the foundation for reinforcement, but this will require excavation work on both the outside and inside of the building, affecting the normal use of the building. Summary of the invention

[0003] The purpose of the invention is to provide a method for reinforcing old buildings.

[0004] In order to solve the above problems, the present invention provides a method for reinforcing old buildings, comprising:

[0005] Carry out earth excavation and support construction around the original brick wall of the building;

[0006] In the area of ​​earth 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 steel bars of the newly added concrete foundation beam are tied, and a lower cavity is chiseled out at the connection part between the original brick wall of the building and the original foundation cap, and the lower cavity is used for the subsequent production of the lower concrete pin key of the newly added concrete foundation beam, and the lower pin key steel bars are tied in the lower cavity, and the lower pin key 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 pin key are integrally cast, wherein, during the casting, a pile pressure hole for the static pressure anchor pile is reserved on the newly added concrete foundation beam;

[0007] At the location of the new concrete short wall on the outside of the original brick wall, the surface of the original brick wall is roughened, the longitudinal steel bars of the new concrete short wall are tied at the location of the new concrete short wall, and the longitudinal steel bars are fixed on the U-shaped steel bars, an upper cavity is chiseled out on the original brick wall, the upper cavity is used to make the upper concrete pin key of the new concrete short wall to be formed, the steel bars of the upper concrete pin key to be formed are tied in the upper cavity, and the steel bars of the upper concrete pin key are inserted into the area of ​​the new concrete short wall to be formed, and the new concrete short wall and the upper concrete pin key are integrally cast;

[0008] At the location of the pile hole, static anchor piles are constructed and then the pile hole is sealed, and finally earth is backfilled to complete the building foundation reinforcement construction.

[0009] Furthermore, in the above method, a lower cavity is chiseled out at the connection portion between the original brick wall of the building and the original foundation cap, comprising:

[0010] At the connection part between the original brick wall of the building and the original foundation pedestal, a lower cavity of 200mm wide * 250mm high * 180mm deep is chiseled out at a spacing of 1000mm.

[0011] Furthermore, in the above method, the pile holes are arranged at intervals on the newly added concrete foundation beam.

[0012] Furthermore, in the above method, the lower part of the original foundation pedestal is a plain concrete layer.

[0013] Furthermore, in the above method, tying the reinforcement of the newly added concrete foundation beam includes:

[0014] Insert the first rebar into the original foundation cap;

[0015] Tie the reinforcement of the newly added concrete foundation beam;

[0016] Connect the reinforcement of the newly added concrete foundation beam to the first embedded reinforcement.

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

[0018] An upper cavity of 200mm wide * 150mm high * 180mm deep is chiseled out on the original brick wall at a spacing of 1000mm.

[0019] Furthermore, in the above method, the position of the upper concrete pin key is staggered with the position of the lower concrete pin key in the original brick wall.

[0020] Furthermore, in the above method, before integrally pouring the newly added concrete short wall and the upper concrete pin key, the method further includes:

[0021] On the newly added concrete short wall, at the structural column position corresponding to the original brick wall, a second rebar is embedded with a depth of 180mm and a spacing of 300mm to connect the structural columns of the newly added concrete short wall and the original brick wall.

[0022] Furthermore, in the above method, the second rebar embedding depth is 180 mm and the spacing is 300 mm.

[0023] Furthermore, in the above method, the height of the newly added concrete short wall is less than or equal to the elevation of the first-floor windowsill of the building.

[0024] Compared with the prior art, the present invention reinforces the building foundation from the periphery of the building by connecting newly added concrete beams and concrete short walls with the original structure, avoiding excavation and reinforcement construction inside the building, ensuring that there is not too much impact on the interior of the building during the reinforcement period, and can achieve non-sensitive construction by adjusting the working hours; it can solve the problem that when the foundation of an old building is reinforced, the excavation of earth inside the building or the reinforcement of the inner lining wall will affect the normal use of the building. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 It is a schematic diagram of the layout of the pile driving holes according to one embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of reinforcement of old buildings according to an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection between a newly added concrete foundation beam and an original foundation cap according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection between a newly added concrete foundation beam and an original brick wall according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the connection between a newly added concrete short wall and an original brick wall according to an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the connection between the newly added concrete short wall and the structural columns of the original brick wall according to an embodiment of the present invention. DETAILED DESCRIPTION

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

[0033] like Figure 1 and 3 As shown, the present invention provides a method for reinforcing an old building, comprising:

[0034] Step S1, the present invention adopts a single-sided reinforcement method for building foundation reinforcement: earth 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 ​​earth excavation and support construction, tie the steel bars of the newly added concrete foundation beam 2 and the U-shaped steel bars 13 of the newly added concrete short wall 4 on the upper part of the steel bars of the newly added concrete foundation beam, at the connection part between the original brick wall 1 of the building and the original foundation cap 5, such as Figure 5 As shown, a lower cavity of 200mm width*250mm height*180mm depth is chiseled out at a spacing of 1000mm, and the lower cavity is used for the subsequent production of the lower concrete pin key 6 of the newly added concrete foundation beam. The lower pin key steel bar 12 is tied in the lower cavity, and the lower pin key steel bar is anchored into the area of ​​the newly added concrete foundation beam 5 to be formed, and the newly added concrete foundation beam 2 and the lower concrete pin key 6 are integrally cast. During the casting, a pile hole 7 for the static anchor pile 8 is reserved on the newly added concrete foundation beam;

[0036] Preferably, Figure 2 As shown, the pile holes 7 are arranged at intervals on the newly added concrete foundation beam 2;

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

[0038] Better, such as Figure 4 As shown, the reinforcement of the newly added concrete foundation beam includes:

[0039] Step S21, inserting the first implanted reinforcement 10 into the original foundation cap;

[0040] Step S22, tying 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 to the first embedded steel bars.

[0042] Step S3, such as Figure 6 As shown, at the location of the new concrete short wall to be added on the outside of the original brick wall, the surface of the original brick wall 1 is roughened, the longitudinal steel bars 14 of the new concrete short wall 4 are tied at the location of the new concrete short wall, and the longitudinal steel bars 14 are fixed on the U-shaped steel bars, and an upper cavity of 200mm width*150mm height*180mm depth is chiseled out on the original brick wall at a spacing of 1000mm, and the upper cavity is used to make the upper concrete pin key 11 of the new concrete short wall to be formed, and the position of the upper concrete pin key is staggered with the position of the lower concrete pin key in the original brick wall, and the steel bars of the upper concrete pin key to be formed are tied in the upper cavity, and the steel bars of the upper concrete pin key are inserted into the area of ​​the new concrete short wall to be formed, and the new concrete short wall and the upper concrete pin key are integrally cast;

[0043] Preferably, Figure 7 As shown, the structural column portion of the newly added concrete short wall corresponding to the original brick wall adopts a second embedded reinforcement 15 with a depth of 180mm and a spacing of 300mm to connect the structural column 16 connecting the newly added concrete short wall and 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 first-floor window sill of the building;

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

[0046] The present invention reinforces the building foundation from the periphery of the building by newly adding concrete beams and concrete short walls to connect with the original structure, avoiding excavation and reinforcement construction inside the building, ensuring that the interior of the building is not excessively affected during the reinforcement period, and can achieve non-invasive construction by adjusting the working hours; it can solve the problem that when the foundation of an old building is reinforced, the excavation of earth inside the building or the reinforcement of the inner lining wall will affect the normal use of the building.

[0047] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0048] Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A method for reinforcing old buildings, characterized in that: include: Carry out earth excavation and support construction around the original brick wall of the building; In the area of ​​earth 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 steel bars of the newly added concrete foundation beam are tied, and a lower cavity is chiseled out at the connection part between the original brick wall of the building and the original foundation cap, and the lower cavity is used for the subsequent production of the lower concrete pin key of the newly added concrete foundation beam, and the lower pin key steel bars are tied in the lower cavity, and the lower pin key 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 pin key are integrally cast, wherein, during the casting, a pile pressure hole for the static pressure anchor pile is reserved on the newly added concrete foundation beam; At the location of the new concrete short wall on the outside of the original brick wall, the surface of the original brick wall is roughened, the longitudinal steel bars of the new concrete short wall are tied at the location of the new concrete short wall, and the longitudinal steel bars are fixed on the U-shaped steel bars, an upper cavity is chiseled out on the original brick wall, the upper cavity is used to make the upper concrete pin key of the new concrete short wall to be formed, the steel bars of the upper concrete pin key to be formed are tied in the upper cavity, and the steel bars of the upper concrete pin key are inserted into the area of ​​the new concrete short wall to be formed, and the new concrete short wall and the upper concrete pin key are integrally cast; At the location of the pile hole, static anchor piles are constructed and then the pile hole is sealed, and finally earth is backfilled to complete the building foundation reinforcement construction.

2. The old building reinforcement method according to claim 1, characterized in that: A lower cavity is chiseled out at the connection between the original brick wall and the original foundation pedestal, including: At the connection part between the original brick wall of the building and the original foundation pedestal, a lower cavity of 200mm wide * 250mm high * 180mm deep is chiseled out at a spacing of 1000mm.

3. The old building reinforcement method according to claim 1, characterized in that: The pile holes are arranged at intervals on the newly added concrete foundation beam.

4. The old building reinforcement method according to claim 1, characterized in that: The lower part of the original foundation pedestal is a plain concrete layer.

5. The old building reinforcement method according to claim 1, characterized in that: Tie the reinforcement of the newly added concrete foundation beam, including: Insert the first rebar into the original foundation cap; Tie the reinforcement of the newly added concrete foundation beam; Connect the reinforcement of the newly added concrete foundation beam to the first embedded reinforcement.

6. The old building reinforcement method according to claim 1, characterized in that: The upper cavity is chiseled out from the original brick wall, including: An upper cavity of 200mm wide * 150mm high * 180mm deep is chiseled out on the original brick wall at a spacing of 1000mm.

7. The old building reinforcement method according to claim 1, characterized in that: The position of the upper concrete pin key is staggered with the position of the lower concrete pin key in the original brick wall.

8. The old building reinforcement method according to claim 1, characterized in that: Before integrally pouring the newly added concrete short wall and upper concrete pin key, it also includes: On the newly added concrete short wall, at the structural column position corresponding to the original brick wall, a second rebar is embedded with a depth of 180mm and a spacing of 300mm to connect the structural columns of the newly added concrete short wall and the original brick wall.

9. The old building reinforcement method according to claim 8, characterized in that: The second rebar depth shown is 180mm and the spacing is 300mm.

10. The old building reinforcement method according to claim 1, characterized in that: The height of the newly added concrete short wall is less than or equal to the elevation of the first-floor windowsill of the building.

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