CN114991515A - Reinforcing method for old wall of ancient building - Google Patents
Reinforcing method for old wall of ancient building Download PDFInfo
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- CN114991515A CN114991515A CN202210497649.3A CN202210497649A CN114991515A CN 114991515 A CN114991515 A CN 114991515A CN 202210497649 A CN202210497649 A CN 202210497649A CN 114991515 A CN114991515 A CN 114991515A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 239000004567 concrete Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 239000004574 high-performance concrete Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007654 immersion Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a reinforcing method for an old wall of an ancient building, which comprises the steps of chiseling a reinforcing groove at the inner side of the wall to be reinforced, chiseling a bar planting hole area on the inner side of the wall to be reinforced, implanting steel bars into the bar planting holes and the reinforcing groove for fixing, mounting steel bar meshes at the inner side of the wall, pouring concrete in all the reinforcing grooves and the steel bar meshes to form a reinforced wall, and the like, wherein the appearance surface of the historic ancient building needs to be kept as much as possible during repair and reinforcement because of the historic culture bottom of the historic ancient building, the invention adopts a method of reinforcing only at the inner side, and improves the strength of the outer wall by implanting the steel bars, the steel bar meshes, pouring the concrete and the like, because the reinforcing groove is dug in the old wall body and the concrete is poured in the period, the newly poured wall body and the old wall body have better connectivity, and the reinforcing structure is firmer and more stable.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a method for reinforcing an old wall of an ancient building.
Background
With the development of urbanization in China, old cells in a central area of a city gradually enter the end stage of the design life, but the existing old cells have huge removal cost, difficulty and social influence factors and high removal risk. In view of the above, in order to save cost and maintain the historical features of the buildings in the last century, most of the owners and city management departments tend to reinforce, reform and promote old houses, and the reinforcement of the walls of the old buildings in cities is different from the reinforcement of general buildings, and the construction needs to mainly consider the following aspects. The construction site limits are adopted, a small amount of machinery and materials are used for construction reinforcement treatment as far as possible, and the influence of construction noise on the life of an owner is reduced; secondly, the reinforcing measures occupy the use area of the house as little as possible, and the life quality of the user is improved; and thirdly, disturbance on the old wall is minimized, and the cost and the environment pollution are reduced. Aiming at the characteristics, a wall body reinforcing method which is rapid, small in disturbance and simple in construction is particularly necessary.
Disclosure of Invention
In view of the above, the invention provides a method for reinforcing an old wall of an ancient building.
The technical scheme is as follows: the method for reinforcing the old wall of the ancient building is characterized by comprising the following steps:
the first step is as follows: a reinforcing groove area is chiseled on the inner side surface of a wall body to be reinforced, the reinforcing groove area is composed of N reinforcing grooves, N is a natural number, the length of each reinforcing groove is L, and the interval distance between adjacent reinforcing grooves on the same straight line is L;
the second step is that: cutting a bar planting hole area on the inner side surface of a wall body to be reinforced, wherein the bar planting hole area consists of M bar planting holes which are distributed in a rectangular array shape, and M is a natural number;
the third step: embedding steel bars into the steel bar embedding holes and the reinforcing grooves for fixation, installing steel bar meshes on the inner side of the wall body, and welding swing heads of the steel bars with the steel bar meshes to ensure the stability of the steel bar meshes;
the fourth step: and pouring concrete into all the reinforcing grooves and the reinforcing mesh to form the reinforcing wall.
By adopting the technical scheme, the historical historic building needs to keep the appearance surface as much as possible when being repaired and reinforced due to the existence of the historical culture base, so that the strength of the outer wall of the historic building is improved by adopting a method of reinforcing only at the inner side surface through the steps of implanting steel bars, steel bar meshes, pouring concrete and the like; meanwhile, the reinforcing method can avoid the old wall body from being punched, has the effect of protecting the outer vertical face, and is particularly suitable for houses with certain historical protection value; the method has the advantages of less building waste residues, small noise disturbance to nearby residents, quick increase of the early strength of the newly-built high-performance concrete inner side reinforcing system, capability of quickly improving the bearing capacity level of the wall body, particular application to dangerous house type residences and remarkable social benefit.
Further, the first step:
the root of the wall body is provided with a first bearing beam body, and the side wall of the first bearing beam body is provided with the reinforcing groove along the length direction. By adopting the structure, the reinforced groove is dug in the beam body, and the bearing performance is better after concrete is poured.
The wall body is internally provided with a supporting column body, and the side wall of the supporting column body is provided with the reinforcing groove along the height direction. Adopt this structure, will consolidate the recess and excavate in the post, its bearing capacity is better after the pouring concrete.
The top of the wall body is provided with a second bearing beam body, and the side wall of the second bearing beam body is provided with the reinforcing groove along the length direction. Adopt this structure, will consolidate the recess and excavate at the roof beam internally, its bearing capacity is better after the pouring concrete.
The distance between the transverse adjacent bar planting holes is 150-250mm, the distance between the longitudinal adjacent bar planting holes is 550-650mm, and the depth of the bar planting holes is not less than 1/3 of the thickness of the wall body and not more than 1/2 of the thickness of the wall body. By adopting the structure, the arrangement of the bar planting holes is reasonable, and the connection of new and old walls is firmer.
The depth of the reinforcing groove is not less than 1/3 of the thickness of the wall body and not more than 1/2 of the thickness of the wall body.
And a water stop steel plate is arranged between the concrete in the reinforcing groove and the concrete at the reinforcing mesh, the abutting ends of the adjacent water stop steel plates are respectively sleeved with a connecting sleeve, and the connecting sleeves are connected through a flexible connecting belt. Adopt this structure, set up the stagnant water steel sheet and can have the infiltration problem such as leaking, getting damp that effectively prevents old wall body probably to exist, the butt joint end of stagnant water steel sheet passes through the adapter sleeve and is connected with flexonics area, and is low to operative employee technical requirement, and is efficient, and the quality is guaranteed easily, especially to some non-straight line docks, and the flexonics area flexible can freely angle of adjustment in certain extent, satisfies the stagnant water steel sheet of multi-angle and connects, can effectively ensure the butt joint reliably.
The connecting sleeves are of a bag-shaped structure with an opening at one end, the opening ends of the connecting sleeves are provided with inward chamfers, the opening ends of the connecting sleeves on the water stop steel plates are adjacent and deviate from each other, the connecting sleeves are sleeved at the end parts of the corresponding water stop steel plates, and the closed ends of the connecting sleeves are connected through the connecting belt. By adopting the structure, the opening end of the connecting sleeve is designed with a chamfer structure, so that the water stop steel plate can be conveniently sleeved.
The connecting sleeves and the connecting belts are made of water-absorbing expansion materials. By adopting the structure, the connecting belt and the connecting sleeve have certain flexibility, ductility, corrosion resistance and water immersion expansibility, and can form a reliable water stop system with the water stop steel plate.
The surfaces of the connecting sleeve and the connecting belt are covered with a protective film, the protective film is composed of two membranes, and the two membranes are respectively covered on the two side surfaces of the connecting sleeve and the connecting belt, so that the surfaces of the connecting sleeve and the connecting belt are completely wrapped. By adopting the design, the protective film is divided into two parts which can be torn off independently, the protective film of the first pouring part is torn off before one section of the pouring construction joint, and the protective film of the later pouring part is torn off before one section of the pouring construction joint, so that the water immersion and pollution are avoided during transportation and construction, and the construction quality is ensured more easily.
Compared with the prior art, the invention has the beneficial effects that: the historic ancient building needs to keep the appearance surface as much as possible when being repaired and reinforced due to the fact that the historic ancient building has the historic culture base, the strength of the outer wall of the historic ancient building is improved by adopting a method of reinforcing only at the inner side surface through the steps of implanting steel bars, steel bar meshes, pouring concrete and the like, the connection of a new wall and an old wall can be realized to the maximum extent due to the fact that reinforcing grooves are formed in the old wall and the concrete is poured in the old wall, the old wall and the new wall are combined together, and the purposes of fully utilizing the strength of the old wall, reducing the thickness of a newly-built wall and saving indoor use space are achieved; meanwhile, the reinforcing method can avoid the old wall body from being punched, has the effect of protecting the outer vertical face, and is particularly suitable for houses with certain historical protection value; the method has the advantages of less building waste residues, small noise disturbance to nearby residents, quick increase of the early strength of the newly-built high-performance concrete inner side reinforcing system, capability of quickly improving the bearing capacity level of the wall body, particular application to dangerous house type residences and remarkable social benefit.
Drawings
FIG. 1 is a schematic structural diagram of the distribution of reinforcing grooves and reinforcing bar planting holes in a wall body;
FIG. 2 is a schematic view of the connection of reinforcing bars and reinforcing mesh sheets;
FIG. 3 is a schematic view showing a connection state of the connection belt and the connection sleeve;
fig. 4 is a schematic structural view showing another connection state of the connecting belt and the connecting sleeve.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1-4, a method for reinforcing an old wall of an ancient building comprises the following steps:
the first step is as follows: the early preparation work comprises the steps of cleaning a surface decoration layer of the wall body 1 to be reinforced to expose the bearing part of the wall body, facilitating the next reinforcement construction, and cleaning smooth, greasy dirt and loose materials on the surface of the wall body by using a hair grabbing machine or a high-pressure water gun;
the second step is that: the method comprises the following steps of using an electric drill to chisel a reinforcing groove area on the inner side surface of a wall body 1 needing to be reinforced, wherein the reinforcing groove area consists of N reinforcing grooves 2, N is a natural number, the length of each reinforcing groove 2 is L, the interval distance between every two adjacent reinforcing grooves 2 which are positioned on the same straight line is L, the value of L is possibly different according to different wall body ageing degrees and is possibly any value between 0.6 and 1.5 meters, and L is 1 meter in the embodiment;
the root of the wall body 1 is provided with a horizontal first bearing beam body (the lowest part in fig. 1), the inner side wall of the first bearing beam body is provided with the reinforcing groove 2 along the length direction, for some wall bodies, a vertical support column (the left side part in fig. 1) is arranged in the wall body 1, the inner side wall of the support column is provided with the reinforcing groove 2 along the height direction, the top of the wall body 1 is provided with a horizontal second bearing beam body (the highest part in fig. 1), the inner side wall of the second bearing beam body is provided with the reinforcing groove 2 along the length direction, the depth of the reinforcing groove 2 is not less than 1/3 of the thickness of the wall body 1 and is not more than 1/2 of the thickness of the wall body 1, and in the embodiment, the height 150mm, the width 200mm and the depth 120mm of the reinforcing groove 2 are arranged.
The third step: cutting a bar planting hole area on the inner side surface of a wall body 1 needing reinforcement, wherein the bar planting hole area is composed of M bar planting holes 3 which are distributed in a rectangular array shape, M is a natural number, the distance between the bar planting holes 3 which are transversely adjacent is 150-shaped and 250mm, the distance between the bar planting holes 3 which are longitudinally adjacent is 550-shaped and 650mm, the depth of the bar planting holes 3 is not less than 1/3 of the thickness of the wall body, and is not more than 1/2 of the thickness of the wall body. In the embodiment, the distance between the horizontally adjacent rib planting holes 3 is 200mm, the distance between the longitudinally adjacent rib planting holes 3 is 600mm, the depth of each rib planting hole 3 is 120mm, and the aperture is 20 mm;
the fourth step: cleaning after drilling, implanting reinforcing steel bars 4 into the reinforcing steel bar implanting holes 3 and the reinforcing grooves 2 for fixation, mounting reinforcing steel bar mesh sheets 5 on the inner side of the wall body 1, and welding throwing heads of the reinforcing steel bars 4 with the reinforcing steel bar mesh sheets 5 to ensure the stability of the reinforcing steel bar mesh sheets 5; in this embodiment, the diameter of the steel bar is 8 mm.
The fifth step: concrete is poured into the reinforcing grooves 2 and the reinforcing mesh sheets 5 to form a reinforcing wall body, in the embodiment, the thickness of the reinforcing wall body is 80mm, the concrete is high-performance concrete, the contact surface of the wall body is sprayed with water to be wet before covering, and meanwhile, the forming quality of the surface of the concrete is improved.
The high-performance concrete in the reinforcing groove 2 and the high-performance concrete at the position of the reinforcing mesh 5 are provided with a water stop steel plate 6, the abutting ends of the water stop steel plates 6 are respectively sleeved with a connecting sleeve 7, and the connecting sleeves 7 are connected through a flexible connecting belt 8. In this embodiment, the water stop steel plate is only disposed at the root of the wall 1, and other places may be disposed as required.
As shown in fig. 3, the connecting sleeve 7 is a bag-shaped structure with an opening at one end, the opening end of the connecting sleeve has an inward chamfer angle of generally 45 °, the inward angle refers to the direction toward the inside of the bag-shaped structure, the opening ends of the connecting sleeves 7 on adjacent water stop steel plates 6 are deviated from each other and are sleeved at the end parts of the corresponding water stop steel plates 6, the closed ends of the water stop steel plates are connected through the connecting belt 8, the connecting sleeves 7 and the connecting belt 8 are made of water-absorbing expansion materials, and specifically, the water-absorbing expansion materials are formed by mixing high molecular inorganic water-absorbing expansion materials and rubber.
The surfaces of the connecting sleeve 7 and the connecting belt 8 are covered with a protective film, the protective film is composed of two membranes, and the two membranes are respectively covered on two side surfaces of the connecting sleeve 7 and the connecting belt 8, so that the surfaces of the connecting sleeve 7 and the connecting belt 8 are completely wrapped.
The thickness of the connecting belt 8 is 7mm, and the length is 200 mm; the thickness of adapter sleeve 7 is 10mm, and length is 200 mm. For some non-linear butt joints, even some water-stopping steel plates with larger dislocation angles are butt joints, as shown in fig. 4, the connecting belt 8 can be flexibly deformed, the angle can be freely adjusted within a certain range, and multi-angle connection of the water-stopping steel plates is met.
During construction, the first water stop steel plate is installed in place and fixed, one connecting sleeve is sleeved into one end of the first water stop steel plate, the second water stop steel plate is installed and fixed, the other connecting sleeve is sleeved into the end, connected with the first water stop steel plate, of the second water stop steel plate, and the process is repeated until all the water stop steel plates are installed and fixed. The protection film is torn off, the protection film on one side of the first pouring is torn off before the first pouring of the construction joint concrete, the concrete is maintained and roughened after the pouring is finished, the protection film on one side of the later pouring is torn off before the second pouring of the construction joint concrete, the concrete is maintained after the pouring is finished, and in the pouring and using processes, the connecting belt and the connecting sleeve can be soaked in water and expanded and are tightly attached to the water stop steel plate and the concrete to achieve the water stop effect.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. A method for reinforcing an old wall of an ancient building is characterized by comprising the following steps:
the first step is as follows: a reinforcing groove area is chiseled on the inner side surface of a wall body (1) to be reinforced, the reinforcing groove area is composed of N reinforcing grooves (2), N is a natural number, the length of each reinforcing groove (2) is L, and the interval distance between every two adjacent reinforcing grooves (2) on the same straight line is L;
the second step is that: cutting a bar planting hole area on the inner side surface of a wall body (1) to be reinforced, wherein the bar planting hole area consists of M bar planting holes (3) which are distributed in a rectangular array shape, and M is a natural number;
the third step: steel bars (4) are implanted into the steel bar implanting holes (3) and the reinforcing grooves (2) for fixation, steel bar meshes (5) are installed on the inner side of the wall body (1), throwing heads of the steel bars (4) are welded with the steel bar meshes (5), and stability of the steel bar meshes (5) is guaranteed;
the fourth step: and concrete is poured in all the reinforcing grooves (2) and the reinforcing mesh sheets (5) to form the reinforcing wall.
2. The method for reinforcing the old wall of the ancient building according to claim 1, wherein: the root of the wall body (1) is provided with a first bearing beam body, and the side wall of the first bearing beam body is provided with the reinforcing groove (2) along the length direction.
3. The method for reinforcing the old wall of the ancient building according to claim 1 or 2, wherein the method comprises the following steps: the wall body (1) is internally provided with a supporting column body, and the side wall of the supporting column body is provided with the reinforcing groove (2) along the height direction.
4. The method for reinforcing the old wall of the ancient building according to claim 3, wherein the method comprises the following steps: the top of the wall body (1) is provided with a second bearing beam body, and the side wall of the second bearing beam body is provided with the reinforcing groove (2) along the length direction.
5. The method for reinforcing the old wall of the ancient building according to claim 3, wherein the method comprises the following steps: the distance between the transverse adjacent bar planting holes (3) is 150-250mm, the distance between the longitudinal adjacent bar planting holes (3) is 550-650mm, the depth of the bar planting holes (3) is not less than 1/3 of the thickness of the wall body (1) and not more than 1/2 of the thickness of the wall body (1).
6. The method for reinforcing the old wall of the ancient building according to claim 3, wherein the method comprises the following steps: the depth of the reinforcing groove (2) is not less than 1/3 of the thickness of the wall body (1) and not more than 1/2 of the thickness of the wall body (1).
7. The method for reinforcing the old wall of the ancient building according to claim 3, wherein the method comprises the following steps: the reinforced concrete in the groove (2) and the concrete at the position of the reinforcing mesh (5) are provided with a water stop steel plate (6) therebetween, the abutting ends of the water stop steel plates (6) are respectively sleeved with a connecting sleeve (7), and the connecting sleeves (7) are connected through a flexible connecting belt (8).
8. The method for reinforcing the old wall of the ancient building according to claim 7, wherein the method comprises the following steps: the connecting sleeve (7) is of a bag-shaped structure with an opening at one end, the opening end of the connecting sleeve is provided with an inward chamfer, the opening ends of the connecting sleeve (7) on the water stop steel plates (6) are adjacent to each other and deviate from each other, the water stop steel plates (6) are sleeved at the corresponding end parts, and the closed ends of the water stop steel plates are connected through the connecting belt (8).
9. The method for reinforcing the old wall of the ancient building according to claim 8, wherein the method comprises the following steps: the connecting sleeve (7) and the connecting belt (8) are made of water-absorbing expansion materials.
10. The method for reinforcing the old wall of the ancient building according to claim 8, wherein the method comprises the following steps: the surfaces of the connecting sleeve (7) and the connecting belt (8) are covered with protective films, each protective film consists of two membranes, and the two membranes are respectively covered on the two side surfaces of the connecting sleeve (7) and the connecting belt (8), so that the surfaces of the connecting sleeve (7) and the connecting belt (8) are completely wrapped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210497649.3A CN114991515B (en) | 2022-05-09 | 2022-05-09 | Old wall reinforcing method for ancient building |
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| CN202210497649.3A CN114991515B (en) | 2022-05-09 | 2022-05-09 | Old wall reinforcing method for ancient building |
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| CN114991515B CN114991515B (en) | 2024-10-01 |
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| KR102146653B1 (en) * | 2020-04-14 | 2020-08-21 | 김혜원 | Reinforcing method for wall |
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| CN213233840U (en) * | 2020-03-27 | 2021-05-18 | 深圳瑞捷工程咨询股份有限公司 | Expansion water stop steel plate |
| CN214941163U (en) * | 2021-02-02 | 2021-11-30 | 中铁七局集团郑州工程有限公司 | Water stop steel plate connecting device |
| CN215978589U (en) * | 2021-08-12 | 2022-03-08 | 河北建研科技有限公司 | Masonry structure's prefabricated wallboard reinforced structure |
-
2022
- 2022-05-09 CN CN202210497649.3A patent/CN114991515B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201554237U (en) * | 2009-11-05 | 2010-08-18 | 上海市第一建筑有限公司 | Seismic strengthening structure of retained exterior wall |
| CN106703434A (en) * | 2016-12-30 | 2017-05-24 | 西安五和土木工程新材料有限公司 | Adobe wall reinforcing device |
| CN206521954U (en) * | 2016-12-30 | 2017-09-26 | 西安五和土木工程新材料有限公司 | A kind of reinforced concrete shear wall bracing means |
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| CN108824225A (en) * | 2018-08-09 | 2018-11-16 | 长安大学 | A kind of hardened system and reinforcement means of reinforced column |
| CN213233840U (en) * | 2020-03-27 | 2021-05-18 | 深圳瑞捷工程咨询股份有限公司 | Expansion water stop steel plate |
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| CN215978589U (en) * | 2021-08-12 | 2022-03-08 | 河北建研科技有限公司 | Masonry structure's prefabricated wallboard reinforced structure |
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| CN114991515B (en) | 2024-10-01 |
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