Method for reinforcing structural column of existing garbage pool

Abstract

The invention provides an existing garbage pool structure column reinforcing method which comprises the following steps: S1, arranging a surrounding sleeve area at least partially surrounding the periphery of a structure column, and forming anchoring holes in the surface of an existing garbage pool located in the surrounding sleeve area; s2, encircling steel bars are erected in the encircling area, and the encircling steel bars are connected to the existing garbage pool through anchor bars inserted into the anchoring holes; and S3, a formwork is erected to pour the surrounding sleeve area so as to be matched with the surrounding sleeve steel bars to form a surrounding sleeve layer, and the surrounding sleeve layer and the structural columns jointly form reinforcing columns. By means of the technical scheme, according to the reinforcing method for the structural column of the existing garbage pool, the surrounding steel bars are arranged around the structural column of the existing garbage pool, the anchoring holes are formed in the existing structure, the surrounding steel bars and the existing structure are connected into a whole through the anchoring bars, and then the surrounding layer around the structural column is formed through formwork erecting and pouring; the surrounding sleeve layer and the structural columns jointly form the reinforced reinforcing columns, and the bearing capacity of an existing garbage pool is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of existing building reinforcement, and in particular to a method for reinforcing structural columns of an existing garbage pit. Background Art

[0002] In the industrial construction sector, large garbage pits are constructed using reinforced concrete, with reinforced concrete walls serving as the pit walls. Reinforced concrete columns are installed on the walls and around the pits to enhance the structure's load-bearing capacity. However, in recent years, with the continuous expansion of factory production and capacity, the amount of industrial waste stored in the pits has increased significantly, significantly increasing the loads on the columns, often exceeding the rated load by double or more. Furthermore, the structural columns of existing garbage pits have experienced a decrease in their load-bearing capacity due to damage and other factors. Due to various factors, some columns have exhibited significant cracking, seriously impacting the structural safety and normal operation of large garbage pits. Summary of the Invention

[0003] A technical problem to be solved by the present disclosure is: how to effectively reinforce the structural columns of the existing garbage pit to improve its load-bearing capacity.

[0004] In order to solve the above technical problems, an embodiment of the present disclosure provides a method for reinforcing the structural columns of an existing garbage pool. The structural columns of the existing garbage pool include side columns arranged on the side of the pool wall, corner columns arranged at the corners of the pool wall, and surrounding columns arranged around the existing garbage pool. The reinforcement method includes: S1. Setting a casing area that at least partially surrounds the outer periphery of the structural column, and opening anchor holes on the surface of the existing garbage pool located in the casing area; S2. Setting up casing steel bars in the casing area, and connecting the casing steel bars to the existing garbage pool by inserting anchor bars into the anchor holes; S3. Supporting formwork and casting the casing area to cooperate with the casing steel bars to form a casing layer, and the casing layer and the structural column together form a reinforced column.

[0005] In some embodiments, the sheathed reinforcement includes longitudinal reinforcement parallel to the extension direction of the structural column and transverse reinforcement perpendicular to the extension direction of the structural column.

[0006] In some embodiments, when the sheathing steel bars are erected around the side columns in S2, the longitudinal reinforcement includes a plurality of inner side column stress bars close to the side column surface for bearing the load and a plurality of outer side column stress bars away from the side column surface for bearing the load, and the plurality of inner side column stress bars and the outer side column stress bars are arranged at intervals along the circumference of the side column.

[0007] In some embodiments, when the sheathing steel bars are erected around the side columns in S2, the transverse reinforcement includes inner side column stirrups close to the side column surface and connected to the inner side column tension reinforcement and outer side column stirrups away from the side column surface and connected to the outer side column tension reinforcement, and both ends of the outer side column stirrups are anchored into the pool wall through the anchor holes respectively.

[0008] In some embodiments, when the sheathed steel bars are erected around the corner columns in S2, the longitudinal bars include a plurality of inner corner column frame bars close to the corner column surface for supporting the steel bar skeleton and a plurality of outer corner column tension bars away from the corner column surface for bearing the load, wherein the plurality of inner corner column frame bars and the plurality of outer corner column tension bars are arranged at intervals along the circumference of the corner column.

[0009] In some embodiments, when the sheathing steel bars are erected around the corner column in S2, the transverse reinforcement includes inner corner column stirrups close to the corner column surface and connected to the inner corner column frame bars, and outer corner column stirrups away from the corner column surface and connected to the outer corner column force bars. Before erecting the outer corner column stirrups, a through hole connecting the inside and outside of the existing garbage pool is opened at a designated position of the existing garbage pool, and the outer corner column stirrups pass through the through hole to form closed stirrups surrounding the corner column.

[0010] In some embodiments, when the sheathed steel bars are erected around the surrounding columns in S2, the longitudinal bars include a plurality of inner surrounding column frame bars close to the surface of the surrounding columns for supporting the steel bar skeleton and a plurality of outer surrounding column stress bars away from the surface of the surrounding columns for bearing the load, and the plurality of inner surrounding column frame bars and the outer surrounding column stress bars are arranged at intervals along the circumference of the surrounding columns.

[0011] In some embodiments, when the sheath steel bars are erected around the surrounding columns in S2, the transverse reinforcement includes inner surrounding column stirrups close to the surface of the surrounding columns and connected to the inner surrounding column frame bars and outer surrounding column stirrups away from the surface of the surrounding columns and connected to the outer surrounding column tension bars.

[0012] In some embodiments, in S1, an extended foundation area is provided at the bottom of the structural column and at least partially surrounds the structural column; in S2, foundation steel bars are laid in the extended foundation area, and the sheathing steel bars are connected to the foundation steel bars; in S3, the extended foundation area is cast by formwork to form an extended foundation connected to the sheathing layer.

[0013] In some embodiments, in S1, after the enclosure area is set, the surface of the existing garbage pool located in the enclosure area is roughened and durable repairs are performed.

[0014] Through the above technical solution, the present invention provides a method for reinforcing the structural columns of an existing garbage pool. By setting up casing steel bars around the structural columns of the existing garbage pool, and opening anchor holes on the existing structure, the casing steel bars and the existing structure are connected as a whole using anchor bars, and then formwork is supported and cast to form a casing layer around the structural columns. The casing layer and the structural columns together form a reinforced column, which effectively improves the bearing capacity of the existing garbage pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 It is a top-down axial view of an existing garbage pool disclosed in an embodiment of the present disclosure;

[0017] Figure 2 This is a cross-sectional view of the side column position disclosed in the embodiment of the present disclosure. Figure 1 ;

[0018] Figure 3 This is a cross-sectional view of the side column position disclosed in the embodiment of the present disclosure. Figure 2 ;

[0019] Figure 4 This is a cross-sectional view of the side column position disclosed in the embodiment of the present disclosure. Figure 3 ;

[0020] Figure 5 This is a cross-sectional view of the corner column position disclosed in the embodiment of the present disclosure. Figure 1 ;

[0021] Figure 6 This is a cross-sectional view of the corner column position disclosed in the embodiment of the present disclosure. Figure 2 ;

[0022] Figure 7 is a schematic cross-sectional view of the positions of the peripheral columns disclosed in the embodiment of the present disclosure;

[0023] Figure 8 is a cross-sectional schematic diagram showing the position of the side columns of the extended foundation disclosed in an embodiment of the present disclosure;

[0024] Figure 9 is a cross-sectional schematic diagram showing the position of the corner columns of the extended foundation disclosed in an embodiment of the present disclosure;

[0025] Figure 10 is a cross-sectional schematic diagram showing the positions of surrounding columns of an extended foundation according to an embodiment of the present disclosure;

[0026] Figure 11 is a longitudinal sectional schematic diagram showing the position of the side columns of the extended foundation disclosed in an embodiment of the present disclosure;

[0027] Figure 12 is a schematic longitudinal section diagram showing the position of the corner columns of the extended foundation disclosed in an embodiment of the present disclosure;

[0028] Figure 13 It is a longitudinal sectional schematic diagram showing the positions of the surrounding columns of the extended foundation disclosed in an embodiment of the present disclosure.

[0029] Description of reference numerals:

[0030] 1. Existing garbage pool; 101. Anchor hole; 102. Anchor reinforcement; 103. Through hole; 2. Structural column; 21. Side column; 22. Corner column; 23. Peripheral column; 3. Sleeve reinforcement; 31. Longitudinal reinforcement; 311. Internal side column reinforcement; 312. External side column reinforcement; 313. Internal corner column frame reinforcement; 314. External corner column reinforcement; 315. Internal peripheral column frame reinforcement; 316. External peripheral column reinforcement; 32. Transverse reinforcement; 321. Inner side column stirrups; 322. Outer side column stirrups; 323. Inner corner column stirrups; 324. Outer corner column stirrups; 325. Inner surrounding column stirrups; 326. Outer surrounding column stirrups; 33. Tie bars; 4. Jacket layer; 5. Reinforced column; 6. Foundation reinforcement; 7. Extended foundation; 8. Pool wall; 9. Top beam; 901. Lintel hole; 10. Original foundation; 11. Foundation; 12. Pad layer. DETAILED DESCRIPTION

[0031] The following embodiments of the present disclosure are further described in detail with reference to the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present disclosure, but are not intended to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather includes all technical solutions within the scope of the claims.

[0032] The present disclosure provides these embodiments in order to make this disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values ​​set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0033] It should be noted that, in the description of this disclosure, unless otherwise specified, "plurality" means greater than or equal to two; terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are intended solely to facilitate and simplify the description of this disclosure, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] In addition, the terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of also including other elements.

[0035] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this disclosure depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0036] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] like Figures 1-13As shown, the present disclosure provides a method for reinforcing the structural columns of an existing garbage pool. The structural columns 2 of the existing garbage pool 1 include side columns 21 arranged on the sides of the pool wall 8, corner columns 22 arranged at the corners of the pool wall 8, and surrounding columns 23 arranged around the existing garbage pool 1. The reinforcement method includes: S1, providing a casing area that at least partially surrounds the outer periphery of the structural column 2, and opening anchor holes 101 on the surface of the existing garbage pool 1 located in the casing area; S2, erecting casing steel bars 3 in the casing area, and connecting the casing steel bars 3 to the existing garbage pool 1 by inserting anchor bars 102 into the anchor holes 101; S3, supporting formwork and casting the casing area to cooperate with the casing steel bars 3 to form a casing layer 4, and the casing layer 4 and the structural column 2 together form a reinforcement column 5.

[0039] Specifically, the side columns 21 and corner columns 22 of the structural columns 2 of the existing garbage pit 1 are integrally cast with the pool wall 8 to directly enhance the bearing capacity of the existing garbage pit 1, and both the side columns 21 and corner columns 22 protrude outward relative to the outer surface of the pool wall 8; the surrounding columns 23 are set on other factory buildings around the existing garbage pit 1 and are indirectly connected to the existing garbage pit 1 through other structures to indirectly enhance the bearing capacity of the existing garbage pit 1 while supporting other equipment or passages in the factory building. Figure 2 、 Figure 5 and Figure 7 As shown, the casing area arranged on the side columns 21 and the corner columns 22 surrounds the cross-section of the column protruding from the pool wall 8, and extends to the pool wall 8 adjacent to the side columns 21 and the corner columns 22. The casing area arranged on the surrounding columns 23 is closed around the column. The thickness of the casing area is generally 200mm-400mm, and can also be adaptively adjusted according to the load conditions.

[0040] In S1, anchor holes 101 are opened on the surface of the structural columns 2 and the pool wall 8 located in the enclosure area. Before opening the holes, a steel bar detector is used to scan the existing structure to avoid the original main reinforcement position. The position of the anchor hole 101 is marked on the surface of the structure according to the design spacing. The design spacing is generally 200mm-300mm, and can also be adaptively adjusted according to the original main reinforcement position or load conditions. Then, a tool (such as an impact drill) is used to drill the hole. The drilling depth is not less than 15 times the diameter of the anchor bar 102. The diameter of the anchor hole 101 is about 5mm larger than the diameter of the anchor bar 102. After the drilling is completed, the ash inside the anchor hole 101 is cleaned, and the anchor glue is injected into the anchor hole 101. The anchor bar 102 is then screwed into the anchor hole 101 in one direction until the anchor bar 102 contacts the bottom of the hole, and then the anchor glue is waited for to be cured. The anchor bar 102 here includes a straight section inserted into the anchor hole 101 and a hook at the other end for anchoring the enclosure steel bar 3;

[0041] In S2, the jacketed steel bars 3 are placed in the hooks of the anchor bars 102 and connected to the existing garbage pool 1 by wire tying or welding. In some embodiments, when the jacketed steel bars 3 are provided around the side columns 21 and corner columns 22, the ends of the jacketed steel bars 3 provided around the structural columns 2 can also be directly anchored into the pool wall 8 to improve the anchoring effect.

[0042] In S3, a formwork is set up to surround the jacket area. The joints between the formwork and the pool wall 8 are treated with sealant to prevent leakage. A pouring port is set at the top of the formwork, and grouting material with a strength grade at least one level higher than the existing structural strength or fine stone concrete with high fluidity is used for pouring. During the pouring process, a rubber hammer is used to hammer the outside of the formwork to expel air from the grouting material and ensure that the cast structure is dense. The jacket steel bars 3 serve as a steel skeleton and together with the grouting material form the jacket layer 4. The reinforcement column 5 is formed by the structural column 2 and the jacket layer 4 set around it. Compared with the original structural column 2, the cross-sectional area is enlarged. The structure of the existing garbage pool 1 is used to strengthen the combination stability of the jacket layer 4 and the structural column 2, which is conducive to the stress stability of the reinforcement column 5 and effectively improves the bearing capacity of the existing garbage pool structural column.

[0043] like Figure 2-13 As shown, in some embodiments, the sheathed reinforcement 3 includes longitudinal reinforcement 31 parallel to the extension direction of the structural column 2 and transverse reinforcement 32 perpendicular to the extension direction of the structural column 2 .

[0044] Specifically, the longitudinal reinforcement 31 is installed in the casing area along the circumferential intervals of the structural column 2 with the help of the hooks of the anchor bars 102, and its bottom is anchored in the original foundation 10 or the extended foundation 7. The transverse reinforcement 32 is arranged at intervals of 150-250 mm (preferably 200 mm) in the extension direction of the structural column 2 and tied to the longitudinal reinforcement 31 or the anchor bars 102 to form a grid-like casing steel bar 3, which makes the stress distribution in the reinforced column 5 more uniform and effectively reduces cracks caused by local stress concentration. The longitudinal reinforcement 31 is used to strengthen the ability of the reinforced column 5 to resist axial loads and bending moments, and the transverse reinforcement 32 is used to strengthen the shear and torsion resistance of the reinforced column 5. The two work together to comprehensively improve the bearing capacity of the structure.

[0045] like Figure 6 As shown, in some embodiments, when the sheathed reinforcement 3 conflicts with the top beam 9 or top plate structure in the existing structure, a lintel hole 901 for the transverse reinforcement 32 to pass through and an anchor hole 101 for anchoring the longitudinal reinforcement 31 can be opened on the top beam 9. To facilitate installation, the longitudinal reinforcement 31 or the transverse reinforcement 32 can be split into two parts, which are installed in corresponding positions and then overlapped.

[0046] In some embodiments, a transverse reinforcement 32 densification area with a longitudinal spacing of no more than 100 mm is provided at the end of the reinforcement column 5 to form a plastic hinge at the end of the structure to improve its seismic performance.

[0047] like Figure 2-Figure 7 As shown, in some embodiments, in order to improve the strength of the reinforced structure, the longitudinal reinforcement 31 includes an inner longitudinal reinforcement that fits the surface of the structural column 2 and an outer longitudinal reinforcement that is away from the surface of the structural column 2, wherein the inner longitudinal reinforcement is connected to the existing structure through the hook of the anchor bar 102, and a tie bar 33 is provided between the inner longitudinal reinforcement and the outer longitudinal reinforcement to form an overall steel reinforcement skeleton.

[0048] like Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, when the sheath steel bars 3 are erected around the side column 21 in S2, the longitudinal bars 31 include a plurality of inner side column stress bars 311 close to the surface of the side column 21 for bearing the load and a plurality of outer side column stress bars 312 away from the surface of the side column 21 for bearing the load, and the plurality of inner side column stress bars 311 and the outer side column stress bars 312 are arranged at intervals along the circumference of the side column 21.

[0049] Specifically, the side column 21 is located at the side of the existing garbage pool 1 and is directly connected to the single pool wall 8. It is used to bear the horizontal thrust transmitted by the pool wall 8, resulting in a large bending moment and shear force on the side column 21. The inner side column stress reinforcement 311 and the outer side column stress reinforcement 312 set at the position of the side column 21 use high-strength threaded steel with a diameter of 16mm-25mm to improve the bending strength and shear strength of the side column 21. In S2, when the longitudinal reinforcement 31 is erected, the inner side column stress reinforcement 311 is attached to the outer surface of the side column 21 and is located in the hook of the anchor bar 102. The inner side column stress reinforcement 311 and the anchor bar 102 are connected by tying wire. The outer side column stress reinforcement 312 is set at a position 5 cm away from the outer edge of the sheath layer 4 to reserve space for the protective layer of the reinforcement column 5. The inner side column stress reinforcement 311 and the outer side column stress reinforcement 312 are connected by a tie bar 33.

[0050] like Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, in order to further enhance the structure's ability to bear horizontal loads, the jacket layer 4 on the side of the side column 21 away from the pool wall 8 is thickened, that is, the cross-sectional height in the direction of the bending moment is further increased, which can significantly improve the bending stiffness of the cross-sectional area. At the same time, the position of the outer side column reinforcement 312 is adjusted accordingly to maintain a distance of 5 cm between it and the outer edge of the jacket layer 4 to ensure that the reinforcement column 5 has a sufficient protective layer thickness.

[0051] like Figure 2 、 Figure 3 and Figure 4As shown, in some embodiments, when erecting the jacket steel bars 3 around the side column 21 in S2, the transverse bars 32 include the inner side column stirrups 321 close to the surface of the side column 21 and connected to the inner side column stressed bars 311, and the outer side column stirrups 322 far from the surface of the side column 21 and connected to the outer side column stressed bars 312. The two ends of the outer side column stirrups 322 are respectively anchored into the pool wall 8 through the anchoring holes 101.

[0052] Specifically, the inner side column stirrups 321 and the outer side column stirrups 322 are made of deformed bars with a diameter of 8 mm - 14 mm. The inner side column stirrups 321 include multiple straight stirrups. A single stirrup is arranged on one side of the side column 21 and tied to the anchor bars 102 or the inner side column stressed bars 311. The stirrups exceeding this side extend outwards and are tied to the corresponding outer side column stressed bars 312 to further enhance the stability of the steel bar framework itself. Multiple straight stirrups together form the inner side column stirrups 321. The outer side column stirrups 322 are a whole "冂"-shaped stirrup, and its two ends are respectively anchored into the pool wall 8 to enhance the connection stability between the steel bar framework and the existing structure.

[0053] As Figure 5 and Figure 6 As shown, in some embodiments, when erecting the jacket steel bars 3 around the corner column 22 in S2, the longitudinal bars 31 include multiple inner corner column erection bars 313 close to the surface of the corner column 22 for supporting the steel bar framework and multiple outer corner column stressed bars 314 far from the surface of the corner column 22 for bearing loads. The multiple inner corner column erection bars 313 and the multiple outer corner column stressed bars 314 are arranged at intervals along the circumferential direction of the corner column 22.

[0054] Specifically, the corner column 22 is located at the vertex position of the existing garbage pool 1 and is connected to two pool walls 8. Since the corner column 22 is farther from the middle of the garbage pool compared to the side column 21, the horizontal thrust it bears is smaller. The inner corner column erection bars 313 are made of deformed bars with a diameter of 8 mm - 14 mm and are used to assist the transverse bars 32 for position fixation to form the steel bar framework. The outer corner column stressed bars 314 are made of high-strength deformed bars with a diameter of 16 mm - 25 mm and are used to improve the flexural strength and shear strength of the corner column 22.

[0055] As Figure 5 and Figure 6 As shown, in some embodiments, when erecting the jacket steel bars 3 around the corner column 22 in S2, the longitudinal bars 31 include the inner corner column stirrups 323 close to the surface of the corner column 22 and connected to the inner corner column erection bars 313, and the outer corner column stirrups 324 far from the surface of the corner column 22 and connected to the outer corner column stressed bars 314. Before erecting the outer corner column stirrups 324, a through hole 103 communicating with its inside and outside is opened at a specified position of the existing garbage pool 1, and the outer corner column stirrups 324 pass through the through hole 103 to form a closed stirrup surrounding the corner column 22.

[0056] Specifically, because corner posts 22 are connected to two pool walls 8, and generally, the horizontal thrusts exerted on them by the two pool walls 8 are different, corner posts 22 will experience torsional deformation. To improve the torsional resistance of corner posts 22, when installing the jacket reinforcement 3 in S2, through-holes 103 are opened at corresponding locations in the pool walls 8. Outer corner post stirrups 324 are inserted through through-holes 103 to form a "mouth"-shaped closed stirrup surrounding corner posts 22. Simultaneously, inner corner post frame reinforcements 313 and outer corner post tension reinforcements 314 are installed within the existing garbage pool 1 to form a jacket layer 4 that encloses corner posts 22, effectively improving the structure's torsional strength. For ease of construction, the outer corner post stirrups 324 are installed in two sections. After installation, the two sections are overlapped or welded together. In other embodiments, closed spiral stirrups spirally surrounding the corner column 22 may be used instead of the transverse reinforcement 32 , or inclined stirrups with an inclination angle of 45° may be added to the existing transverse reinforcement 32 to further enhance the torsional resistance of the corner column 22 .

[0057] like Figure 7 As shown, in some embodiments, when the sheath steel bars 3 are erected around the surrounding columns 23 in S2, the longitudinal bars 31 include a plurality of inner surrounding column frame bars 315 close to the surface of the surrounding columns 23 for supporting the steel bar skeleton and a plurality of outer surrounding column stress bars 316 away from the surface of the surrounding columns 23 for bearing the load, and the plurality of inner surrounding column frame bars 315 and the outer surrounding column stress bars 316 are arranged at intervals along the circumference of the surrounding columns 23.

[0058] Specifically, the surrounding columns 23 are arranged on other factory structures around the existing garbage pool 1, and are indirectly connected to the existing garbage pool 1 through other structures while supporting other equipment or passages in the factory. They are mainly used to bear vertical loads. The inner surrounding column frame reinforcement 315 adopts threaded steel bars with a diameter of 8mm-14mm, which are used to assist the transverse reinforcement 32 in fixing the position to form a steel skeleton; the outer surrounding column force reinforcement 316 adopts high-strength threaded steel bars with a diameter of 16mm-25mm, which are used to improve the bending strength and shear strength of the surrounding columns 23.

[0059] like Figure 7 As shown, in some embodiments, when the sheath reinforcement 3 is erected around the surrounding column 23 in S2, the transverse reinforcement 32 includes an inner surrounding column stirrup 325 close to the surface of the surrounding column 23 and connected to the inner surrounding column frame reinforcement 315 and an outer surrounding column stirrup 326 away from the surface of the surrounding column 23 and connected to the outer surrounding column tension reinforcement 316.

[0060] Specifically, the inner surrounding column stirrups 325 and the outer surrounding column stress reinforcement 316 are made of threaded steel with a diameter of 8mm-14mm, wherein the inner surrounding column stirrups 325 include multiple straight stirrups, a single stirrup is set on one side of the surrounding column 23 and tied to the anchor bar 102 or the inner surrounding column frame reinforcement 315, the stirrups beyond the side extend and are tied to the corresponding outer surrounding column stress reinforcement 316 to further enhance the stability of the steel skeleton itself, multiple straight stirrups are used together as the inner surrounding column stirrups 325, and the outer surrounding column stress reinforcement 316 is a whole "mouth"-shaped stirrup to enhance the integrity of the steel skeleton.

[0061] like Figures 8-13 As shown, in some embodiments, in S1, an extended foundation area is provided at the bottom of the structural column 2 and at least partially surrounds the structural column 2; in S2, foundation steel bars 6 are laid in the extended foundation area, and the jacket steel bars 3 are connected to the foundation steel bars 6; in S3, the extended foundation area is cast by formwork to form an extended foundation 7 connected to the jacket layer.

[0062] Specifically, since the reinforcement column 5 has a larger cross-sectional area than the structural column 2, in order to improve the load-bearing capacity of the entire structure, it is necessary to add an extended foundation 7 on the original foundation 10. In S1, as Figure 8 、 Figure 9 and Figure 10 As shown, on the horizontal projection plane, the expansion foundation area is expanded outward based on the edge of the enclosure area. At the same time, in order to facilitate construction, only the expansion foundation 7 is added outside the existing garbage pool 1; in S2, combined with Figure 11 、 Figure 12 and Figure 13 As shown, the foundation reinforcement 6 is a double-layer, bidirectional structure made of high-strength threaded steel bars with a diameter of 16mm-25mm, arranged at intervals of 200mm. Saddle bars are provided between the upper and lower layers along the height direction. Longitudinal bars 31 are anchored into the foundation reinforcement 6, with an anchorage length of no less than 35 times the diameter of the longitudinal bars 31. In S3, the jacket layer 4 and the extended foundation 7 are integrally cast to enhance the integrity of the reinforced structure. Prior to laying the foundation reinforcement 6, the subgrade 11 in the extended foundation area beyond the original foundation 10 is compacted, and a cushion layer 12 of no less than 100mm is laid on the surface of the subgrade 11.

[0063] In some embodiments, in S1 , after the enclosure area is set, the surface of the existing garbage pit 1 within the enclosure area is roughened and durable repairs are performed.

[0064] Specifically, roughening the surface of the existing garbage pool 1 can increase the bonding force between the surrounding layer 4 and the existing structure. The surface of the structure can be roughened by a hammer, a wheel grinder or a high-pressure water jet, etc., and the selection should be made according to the actual situation. After the roughening is completed, the surface of the structure should be cleaned and inspected, and cracks that have appeared should be repaired. Repair glue can be used to seal the cracks.

[0065] The following describes the existing method for reinforcing the structural columns of a garbage pit with reference to specific embodiments.

[0066] S1. First, determine the size of the surrounding area and the extended foundation area of ​​the side column 21, the corner column 22 and the surrounding column 23, roughen the outer surface of the structural column 2 that needs to be reinforced and the surface of the adjacent pool wall 8 and perform durability repair. Then, according to the design, open anchor holes 101, through holes 103 and lintel holes 901 on the existing structure, and set anchor bars 102 in the anchor holes 101; S2. Excavate the bottom of the structural column 2 to expose the original foundation 10, and compact the foundation 11 in the extended foundation area that exceeds the scope of the original foundation 10 and pour the cushion layer 12. First, lay the foundation steel bars 6, and then set the longitudinal bars 31, transverse bars 32 and tension bars. Tie reinforcement 33, anchor the longitudinal reinforcement 31 into the foundation reinforcement 6, and use the anchor reinforcement 102 to complete the connection between the jacket reinforcement 3 and the original structure. For the longitudinal reinforcement 31 of the corner column 22 located inside the existing garbage pit 1, it is directly anchored into the garbage pit raft; S3, set up the formwork and use grouting material with a strength grade higher than the existing structure to cast and maintain it to the design strength to form the jacket layer 4 and the extended foundation 7. The jacket layer 4 utilizes the coordination of the jacket reinforcement 3 with the anchor reinforcement 102, the through hole 103 and the lintel hole 901, and the adhesion between the grouting material and the roughened surface of the existing structure to form a reinforcement column 5 together with the structural column 2 to complete the reinforcement construction of the existing garbage pit structural column.

[0067] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0068] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A method for reinforcing the structural columns of an existing garbage pool, wherein the structural columns (2) of the existing garbage pool (1) include side columns (21) arranged on the sides of the pool wall (8), corner columns (22) arranged at the corners of the pool wall (8), and surrounding columns (23) arranged around the existing garbage pool (1), characterized in that: The reinforcement method includes: S1. Setting a casing area that at least partially surrounds the outer periphery of the structural column (2), and opening anchor holes (101) on the surface of the existing garbage pool (1) surrounded by the casing area; S2, setting up the jacket steel bars (3) in the jacket area, and connecting the jacket steel bars (3) to the existing garbage pool (1) by inserting the anchor bars (102) into the anchor holes (101); S3, supporting the formwork and casting the jacket area to form a jacket layer (4) in conjunction with the jacket reinforcement (3); the jacket layer (4) and the structural column (2) together form a reinforcement column (5).

2. The method for reinforcing the existing garbage pool structure column according to claim 1 is characterized in that: The sheathed steel bars (3) include longitudinal bars (31) parallel to the extension direction of the structural column (2) and transverse bars (32) perpendicular to the extension direction of the structural column (2).

3. The method for reinforcing the existing garbage pool structure column according to claim 2, characterized in that: When the sheathed reinforcement (3) is erected around the side column (21) in S2, the longitudinal reinforcement (31) includes a plurality of inner side column stress reinforcements (311) close to the surface of the side column (21) for bearing the load and a plurality of outer side column stress reinforcements (312) away from the surface of the side column (21) for bearing the load, and the plurality of inner side column stress reinforcements (311) and the outer side column stress reinforcements (312) are arranged at intervals along the circumference of the side column (21).

4. The method for reinforcing the existing garbage pool structure column according to claim 3 is characterized in that: When the sheath reinforcement (3) is erected around the side column (21) in S2, the transverse reinforcement (32) includes an inner side column stirrup (321) close to the surface of the side column (21) and connected to the inner side column stress reinforcement (311) and an outer side column stirrup (322) away from the surface of the side column (21) and connected to the outer side column stress reinforcement (312), and both ends of the outer side column stirrup (322) are anchored into the pool wall (8) through the anchor hole (101) respectively.

5. The method for reinforcing the existing garbage pool structure column according to claim 2, characterized in that: When the sheathed steel bars (3) are erected around the corner column (22) in S2, the longitudinal bars (31) include a plurality of inner corner column frame bars (313) close to the surface of the corner column (22) for supporting the steel bar skeleton and a plurality of outer corner column stress bars (314) away from the surface of the corner column (22) for bearing the load, and the plurality of the inner corner column frame bars (313) and the plurality of the outer corner column stress bars (314) are arranged at intervals along the circumference of the corner column (22).

6. The method for reinforcing the existing garbage pool structure column according to claim 5, characterized in that: When the sheathed reinforcement (3) is erected around the corner column (22) in S2, the transverse reinforcement (32) includes an inner corner column stirrup (323) close to the surface of the corner column (22) and connected to the inner corner column frame reinforcement (313) and an outer corner column stirrup (324) away from the surface of the corner column (22) and connected to the outer corner column force reinforcement (314), and before erecting the outer corner column stirrup (324), a through hole (103) connecting the inside and outside of the existing garbage pool (1) is opened at a designated position of the existing garbage pool (1), and the outer corner column stirrup (324) passes through the through hole (103) to form a closed stirrup surrounding the corner column (22).

7. The method for reinforcing the existing garbage pool structure column according to claim 2, characterized in that: When the sheathed steel bars (3) are erected around the surrounding columns (23) in S2, the longitudinal bars (31) include a plurality of inner surrounding column frame bars (315) close to the surface of the surrounding columns (23) for supporting the steel bar skeleton and a plurality of outer surrounding column stress bars (316) away from the surface of the surrounding columns (23) for bearing the load, and the plurality of inner surrounding column frame bars (315) and the outer surrounding column stress bars (316) are arranged at intervals along the circumference of the surrounding columns (23).

8. The method for reinforcing the existing garbage pool structure column according to claim 7, characterized in that: When the sheath reinforcement (3) is erected around the surrounding column (23) in S2, the transverse reinforcement (32) includes an inner surrounding column stirrup (325) close to the surface of the surrounding column (23) and connected to the inner surrounding column frame reinforcement (315) and an outer surrounding column stirrup (326) away from the surface of the surrounding column (23) and connected to the outer surrounding column force reinforcement (316).

9. The method for reinforcing the existing garbage pool structure column according to claim 1, characterized in that: In S1, an extended foundation area is provided, which is located at the bottom of the structural column (2) and at least partially surrounds the structural column (2); In S2, foundation steel bars (6) are laid in the extended foundation area, and the sheathed steel bars (3) are connected to the foundation steel bars (6); In S3, the extended foundation area is cast by formwork to form an extended foundation (7) connected to the casing layer.

10. The method for reinforcing the existing garbage pool structure column according to claim 1, characterized in that: In S1, after the enclosure area is set, the surface of the existing garbage pool (1) located in the enclosure area is roughened and durable repair is performed.

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