Reinforcing method for old masonry building outer wall root wall beam changing and auxiliary equipment of reinforcing method for old masonry building outer wall root wall beam changing

Abstract

The invention provides an old masonry building outer wall root wall beam changing reinforcing method and auxiliary equipment thereof. The reinforcing method comprises the following steps that a half side wall body is chiseled away, and jacking is conducted through a jack. Chiseling off the other half of the wall body, and gradually moving the jack to the middle part of the wall to bear weight; and the masonry part of the wall body is intermittently dismantled. One section of bracket body is embedded when one section is dismounted, so that the whole section of wall body is jacked back; the beam stirrups are placed in, the beam stirrups are positioned and locked through the frame body, and the steel bars are bound; formwork erecting is conducted on the bound beam body, and then concrete is poured; for the wall body on the upper portion of the other section of foundation perpendicular to the wall body on the side, section-by-section treatment is conducted, then excavation and construction of the under-beam independent foundation are conducted, the construction operation of the lower independent foundation can be conducted while the completeness of the upper structure is guaranteed, the construction efficiency is improved, and the structural stability of a beam body and the follow-up binding quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a reinforcement method for converting the root of an exterior wall of an old masonry building into a beam and auxiliary equipment thereof. Background Art

[0002] In the process of strengthening the foundation of old masonry buildings, when adding an independent foundation at the bottom of the building, in order to ensure that the upper part of the old building is not damaged and to facilitate the excavation and construction of the independent foundation, the integrity of the upper building must be guaranteed before excavation.

[0003] The existing methods for strengthening the foundation of old masonry buildings mainly include replacement method and preloading method. The replacement method is to dig out the soft soil layer within a range not too deep below the bottom of the foundation, and then fill and compact it with hard and high-strength materials to form a good artificial foundation. The preloading method is to apply a preloading load on the foundation of the building to reduce the settlement of the foundation and increase the strength of the foundation. However, the above schemes all require construction treatment of the bottom surface of the foundation, which is difficult to construct and is easy to damage and affect the old buildings on the top. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a reinforcement method for the root wall-to-beam reinforcement of the exterior wall of an old masonry building and its auxiliary equipment, so as to solve the problems raised in the above-mentioned background technology. The present invention can carry out the construction of the lower independent foundation while ensuring the integrity of the upper structure, thereby improving the construction efficiency, and with the help of the bracket assembly, it can effectively improve the structural stability of the beam body and the subsequent binding quality.

[0005] In order to achieve the above object, the present invention is implemented through the following technical scheme: a reinforcement method for the root of the outer wall of an old masonry building by replacing the wall with a beam, comprising the following steps:

[0006] Step 1: Chisel off half of the wall, use the jack to push it back up, then chisel off the other half of the wall, and gradually move the jack to the middle of the wall to bear the weight;

[0007] Step 2: The masonry part of the wall is dismantled intermittently. Every time a section is dismantled, a section of the bracket frame is immediately embedded, and finally the entire section of the wall is rebuilt;

[0008] Step 3: Place the beam stirrups and tie the steel bars;

[0009] Step 4: Set up the formwork for the beam that has been tied, and then pour concrete to make the beam and the wall one;

[0010] Step 5: For the wall on the upper part of another foundation perpendicular to the wall on this side, process it section by section and then excavate and construct the independent foundation under the beam.

[0011] Furthermore, in the step 1, the position of the jack needs to be fixed each time the jack is returned to the top, and the jack is used to chisel out the first section of the wall, return to the top for reinforcement, and then chisel out the subsequent wall.

[0012] Furthermore, in the step 2, a section is chiseled out every 300 mm, and the bracket frame is embedded in the chiseled wall gap, and the frame must be embedded on both sides of the wall; the bracket frame will serve as a part of the beam reinforcement and will be cast in the beam.

[0013] An auxiliary device as used in the above reinforcement method, the auxiliary device includes a bracket assembly, an upper supporting mechanism, an impact assembly and a lower supporting mechanism. When each bracket frame is installed, the upper supporting mechanism and the lower supporting mechanism are first respectively mounted on the two ends of the bracket assembly, and then the bracket assembly is embedded in the wall gap and locked and connected to the bracket frame part that has been installed.

[0014] Furthermore, during the subsequent removal process of the newly installed bracket frame aligned with the side wall, the impact assembly is manually hammered by an external hammering device until the impact assembly is embedded into the top and bottom of the inner wall of the wall gap.

[0015] Furthermore, the impact assembly is rotated around the support column in the bracket assembly, and the side shovel plate is used to remove the remaining stones on the inner wall of the wall gap.

[0016] Furthermore, after the installation of all the support frames is completed, multiple beam stirrups are sequentially embedded into the positioning holes on the inner sides of the upper supporting mechanism and the lower supporting mechanism until each beam stirrup is completely embedded and positioned, and each beam stirrup is tied and fixed with iron wire.

[0017] Furthermore, both ends of each iron wire pass through the inside of the bundling hole, and after the bundling and fixing of any beam stirrup is completed, the two ends of the iron wire passing through are hingedly locked from the outside of the impact component.

[0018] Furthermore, the spacing between each adjacent stirrup is the same.

[0019] Furthermore, after the auxiliary equipment is installed, concrete is poured. During the concrete pouring process, the pouring speed and vibration force are controlled to improve the density and uniformity of the concrete, and whether leakage or deformation occurs during concrete pouring is observed and detected in real time.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention adopts the method of changing walls into beams, changing the masonry walls within a certain range above the independent foundation into reinforced concrete beams, and then supporting the beams. While ensuring the integrity of the upper structure, the construction of the lower independent foundation is carried out, and the construction process is simple and efficient.

[0022] 2. The present invention utilizes a jack for jacking back, which can create stable supporting conditions for subsequent construction and provide accurate force assessment.

[0023] 3. In the present invention, the masonry part of the wall is dismantled intermittently, and each time a section is dismantled, a new section is immediately embedded, and finally the entire wall section is rebuilt. The bracket frame will serve as a part of the beam reinforcement and be cast in the beam, which can effectively improve the structural stability of the beam and the subsequent binding quality, and ensure that the top and bottom surfaces of the demolished area are more flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A flow chart of a reinforcement method for replacing the root wall of an old masonry building exterior wall with a beam and its auxiliary equipment according to the present invention;

[0025] Figure 2 It is a structural diagram of the support frame when it is assembled in the reinforcement method of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the support of the present invention;

[0027] Figure 4 The figure is a disassembled view of the support assembly part of the present invention;

[0028] Figure 5 It is a partial structural diagram of the impact assembly in the bracket of the present invention;

[0029] In the figure: 1. bracket assembly; 2. upper supporting mechanism; 3. impact assembly; 4. lower supporting mechanism; 5. docking plate; 6. locking screw hole; 7. supporting plate; 8. beam stirrups; 9. locking bolt; 10. limiting convex ring; 11. plug-in column; 12. positioning hole; 13. vertical plate; 14. impact plate; 15. bundling hole; 16. limiting baffle; 17. gap; 18. bundling wire; 19. shovel plate; 20. convex strip; 21. positioning hole; 22. support column. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 5The present invention provides the following technical solutions: a reinforcement method for the root of the exterior wall of an old masonry building by replacing the wall with a beam and its auxiliary equipment. The method is applicable to the process of reinforcing the foundation of an old masonry building. When an independent foundation is added at the bottom of the building, in order to ensure that the upper part of the old building is not damaged and to facilitate the excavation and construction of the independent foundation, the integrity of the upper building must be ensured before excavation. Therefore, this application adopts the solution of replacing the wall with a beam, and the masonry wall within the 300mm high range above the independent foundation is changed to a reinforced concrete beam, and then the beam body is supported. While ensuring the integrity of the upper structure, the construction of the lower independent foundation is carried out.

[0032] This embodiment also provides the following specific steps:

[0033] Step 1: First, chisel off half of the wall where the wall is subjected to the greatest force, and then use the jack to top it back up. After the top-up work is completed, chisel off the other half of the wall, and gradually move the jack to the middle of the wall to bear the weight. This operation step is to create stable support conditions for subsequent construction and provide accurate force assessment. During the entire operation process, the jack should be placed firmly and stably to prevent any unexpected displacement or instability.

[0034] Step 2: According to the standard of chiseling out a section every 300mm, embed the support frame into the chiseled wall gap 17 (the frame needs to be embedded on both sides of the wall), and intermittently demolish the masonry part of the wall. Each time a section is removed, it is immediately embedded, and finally the entire section of the wall is rebuilt. The support frame will serve as a part of the beam reinforcement and be cast in the beam. This link is crucial to the structural stability of the beam. When demolishing the wall, it is necessary to control the speed and strength of the demolition to avoid unnecessary impact on the surrounding structure.

[0035] In this embodiment, the bracket frame used includes a bracket assembly 1, an upper supporting mechanism 2, a lower supporting mechanism 4 and an impact member. The two ends of the bracket assembly 1 are integrally formed with a limiting protrusion 10, the outer side of the limiting protrusion 10 is integrally formed with a plug-in column 11, and the side of the plug-in column 11 is integrally formed with a docking plate 5. The surface of the docking plate 5 is provided with a locking screw hole 6, and a locking bolt 9 is passed through the inside of the locking screw hole 6.

[0036] The standard is to chisel out a section every 300mm, and the bracket frame is embedded in the chiseled wall gap 17, and the frame must be embedded on both sides of the wall; the bracket frame will serve as a part of the beam reinforcement and be cast in the beam. When installing each bracket frame, first sleeve the upper supporting mechanism 2 and the lower supporting mechanism 4 on both ends of the bracket assembly 1, and then embed the bracket assembly 1 into the wall gap 17, and lock and connect the bracket frame part that has been installed.

[0037] In this embodiment, the impact assembly 3 is used to rotate the top support plate 7, wherein a positioning hole 21 is opened at one end of the top support plate 7, and the top support plate 7 is mounted on the surface of the plug-in column 11 through the positioning hole 21. The surface of the top support plate 7 is welded with a vertical plate 13, and the surface of the vertical plate 13 is integrally formed with a convex strip 20, and the outer side of the convex strip 20 is welded with an impact plate 14.

[0038] When the newly installed bracket frame is aligned with the side wall for subsequent removal, the impact assembly 3 is hammered manually by an external hammering device until the impact assembly 3 is embedded in the top and bottom of the inner wall of the wall gap 17. The impact assembly 3 is rotated around the support column 22 in the bracket assembly 1, and the side shovel plate 19 is used to remove the remaining stones on the inner wall of the wall gap 17.

[0039] In this embodiment, iron wire is used to complete the bundling and fixing of the beam stirrups 8, wherein a plurality of bundling holes 15 are opened on the surface of the vertical plate 13, and the surface of the vertical plate 13 is also integrally formed with a limit baffle 16, and a gap 17 is arranged between the limit baffles 16, and a positioning hole 21 is opened on the surface of the top plate 7, and the end of each beam stirrup 8 is embedded in the interior of the positioning hole 21 for positioning treatment, and the iron wire is passed around the outside of the two ends of the beam stirrup 8 and then inserted into the interior of the bundling hole 15, and the locking bolt 9 passes through the locking screw hole 6 and is embedded in the surface of the top plate 7.

[0040] After the installation of all the support frames is completed, multiple beam stirrups 8 are sequentially embedded into the positioning holes 21 inside the upper supporting mechanism 2 and the lower supporting mechanism 4 until each beam stirrup 8 is completely embedded and positioned, and each beam stirrup 8 is tied and fixed with iron wire. The two ends of each iron wire pass through the inside of the bundling hole 15, and after the bundling and fixing of any beam stirrup 8 is completed, the two ends of the iron wire passing through are hinged and locked from the outside of the impact assembly 3.

[0041] Step 3: According to the design requirements, place the beam stirrups 8 and carefully tie the steel bars according to the drawing requirements. The quality of steel bar tying is directly related to the bearing capacity and durability of the beam. During the tying process, ensure that the stirrup spacing is uniform and the steel bar connection is firm, meeting the design and specification requirements.

[0042] Step 4: Set up the formwork for the beam that has been tied, and then pour concrete to make the beam and the wall one, so as to achieve the expected reinforcement effect. The formwork should be set up firmly and reliably to prevent leakage or deformation during concrete pouring. When pouring concrete, the pouring speed and vibration intensity should be controlled to ensure the density and uniformity of the concrete.

[0043] Step 5: For the wall of the other section of the upper part of the foundation perpendicular to the wall on this side, process it section by section until the overall conditions for the construction of the lower foundation are met, and then excavate and construct the independent foundation under the beam. In the entire construction process, each step must be strictly implemented in accordance with standards and specifications, and construction personnel should have professional skills and a high sense of responsibility. At the same time, quality monitoring and safety management should be strengthened during the construction process to promptly detect and solve possible problems in order to ensure the smooth completion and quality safety of the old building wall-to-beam project and provide strong support for the stability and durability of the building.

[0044] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A reinforcement method for converting the root of the exterior wall of an old masonry building into a beam, characterized in that: The following steps are involved: Step 1: Chisel off half of the wall, use the jack to push it back up, then chisel off the other half of the wall, and gradually move the jack to the middle of the wall to bear the weight; Step 2: The masonry part of the wall is dismantled intermittently. Every time a section is dismantled, a section of the bracket frame is immediately embedded, and finally the entire section of the wall is rebuilt; Step 3: Place the beam stirrups and tie the steel bars; Step 4: Set up the formwork for the beam that has been tied, and then pour concrete to make the beam and the wall one; Step 5: For the wall on the upper part of another section of the foundation perpendicular to the wall on this side, process it section by section and then excavate and construct the independent foundation under the beam.

2. The reinforcement method of the root of the exterior wall of an old masonry building by replacing the wall with a beam according to claim 1 is characterized by: In the step 1, the position of the jack needs to be fixed each time the jack is returned to the top, and the jack is used to chisel out the first section of the wall, return to the top for reinforcement, and then chisel out the subsequent wall.

3. The reinforcement method of the root of the exterior wall of an old masonry building by replacing the wall with a beam according to claim 1, characterized in that: In the step 2, a section is chiseled out every 300mm, and the bracket frame is embedded in the chiseled wall gap, and the frame must be embedded on both sides of the wall; the bracket frame will serve as a part of the beam reinforcement and will be cast in the beam.

4. An auxiliary device used in the reinforcement method according to claim 1, characterized in that: The auxiliary equipment comprises a support assembly (1), an upper supporting mechanism (2), an impact assembly (3) and a lower supporting mechanism (4). When each support frame is installed, the upper supporting mechanism (2) and the lower supporting mechanism (4) are respectively sleeved on the two ends of the support assembly (1), and then the support assembly (1) is embedded in the wall gap (17), and the support frame part after installation is locked and connected.

5. The auxiliary device according to claim 4, characterized in that: During the subsequent removal process of the newly installed support frame aligned with the side wall, the impact assembly (3) is manually hammered by an external hammering device until the impact assembly (3) is embedded into the top and bottom of the inner wall of the wall gap (17).

6. The auxiliary device according to claim 5, characterized in that: The impact assembly (3) is rotated around the support column (22) in the bracket assembly (1), and the residual stones on the inner wall of the wall gap (17) are removed in cooperation with the shovel plate (19) on the side.

7. The auxiliary device according to claim 5, characterized in that: After the installation of all the support frames is completed, multiple beam stirrups (8) are sequentially embedded into the positioning holes (21) (12) on the inner sides of the upper supporting mechanism (2) and the lower supporting mechanism (4) until each beam stirrup (8) is completely embedded and positioned, and each beam stirrup (8) is tied and fixed using iron wire.

8. The auxiliary device according to claim 7, characterized in that: Both ends of each iron wire pass through the inside of the bundling hole (15), and after the bundling and fixing of any beam stirrup (8) is completed, the two ends of the iron wire passing through are hingedly locked from the outside of the impact component (3).

9. The auxiliary device according to claim 8, characterized in that: The spacing between each adjacent stirrup is the same.

10. The auxiliary device according to claim 9, characterized in that: After the auxiliary equipment is installed, concrete is poured. During the concrete pouring process, the pouring speed and vibration force are controlled to improve the density and uniformity of the concrete, and whether leakage or deformation occurs during concrete pouring is observed and detected in real time.

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