A hollow / bucket wall anchor reinforcement structure and reinforcement method

Abstract

The present application discloses a hollow / bucket wall anchor rod reinforcement structure and reinforcement method, comprising a wall body, an anchor rod, an outer sleeve and a filling medium. The wall body has a cavity thin wall arranged at intervals along the length direction or the height direction, a cavity is formed between adjacent cavity thin walls, and the cavity thin wall is provided with a through hole. The anchor rod is arranged along the length direction or the height direction of the wall body, the anchor rod passes through the through hole of the cavity thin wall, and the outer sleeve is sleeved on the anchor rod. The filling medium is filled between the outer sleeve and the anchor rod to form a lotus root body in the cavity between adjacent cavity thin walls, and the cross-sectional area of ​​the lotus root body is greater than the cross-sectional area of ​​the through hole. The hollow / bucket wall anchor rod reinforcement structure and reinforcement method of the present application connects and reinforces the cavity thin walls between the hollow / bucket walls through the anchor rod, uses the filling medium to fill between the anchor rod and the outer sleeve to form a lotus root structure, and uses a simple and quick method to ensure that the inserted anchor rod is stably arranged in the wall body and ensure the stability of the wall body.

Description

Technical Field

[0001] The present application relates to the technical field of hollow / bucket wall reinforcement, and in particular to a hollow / bucket wall anchor rod reinforcement structure and reinforcement method. Background Art

[0002] Hollow / bucket walls are often used in dormitories, residences, canteens, office buildings, workshop exterior walls and warehouses. Compared with solid brick walls of the same thickness, hollow / bucket walls are lighter in weight and save materials, and are widely used in southern my country. However, their shear and compression resistance is poor, and their integrity is weak and their lateral stiffness is low, resulting in poor seismic performance, so they need to be reinforced in an appropriate manner. In addition, in cultural relics buildings, due to years of disrepair, the walls are cracked, and there are large cracks or cavities inside, which greatly weakens the integrity of the walls and also needs to be reinforced in an appropriate manner.

[0003] Common reinforcement methods for ordinary masonry structures include grouting, external ring beam-structural column method, reinforced concrete slab wall reinforcement, steel mesh cement mortar surface reinforcement, steel strand-polymer mortar reinforcement, and carbon fiber cloth bonding reinforcement.

[0004] Due to the existence of hollows, the reinforcement methods of ordinary masonry structures are not suitable for hollow / bucket walls. For example, the grouting method is to inject high-fluidity binder materials into the wall cavity, and by filling the original hollows, the shear bearing capacity of the wall is improved and the seismic performance of the structure is improved. Common grouting methods include gravity grouting and pressure grouting. The gravity grouting method uses the self-weight of the configured high-fluidity slurry to penetrate into the cavity; the pressure grouting method uses external equipment to press the slurry into the wall cavity. However, in the case of a large cavity inside a hollow / bucket wall, a large volume of slurry needs to be injected, a large amount of reinforcement, and a large increase in the self-weight of the structure, which leads to an increase in seismic action and may cause foundation reinforcement. At the same time, improper pressure control during the grouting process can easily cause the vertical bricks to bulge outward.

[0005] The additional ring beam-structural column method is to set additional reinforced concrete structural columns at the four corners of the exterior wall and at the junction of the interior and exterior walls, set closed ring beams along the exterior wall at the floor elevation of each floor, and set steel tie rods along the interior transverse wall. It is a seismic reinforcement method for masonry structures that requires partial entry to increase the integrity of the house. This method can enhance the integrity of the house, but when setting inner wall tie rods for hollow / bucket wall reinforcement, due to the presence of the cavity, the tie rods cannot be reliably anchored and cannot prevent the cracking of the wall.

[0006] The reinforcement method of steel mesh (polymer) mortar surface layer is to remove the plaster layer on the surface of the masonry wall that needs to be reinforced, drill holes to plant steel bars or set tie bars, hang steel mesh on one or both sides of the wall, and apply cement mortar (polymer mortar) on the wall in layers, which can improve the seismic bearing capacity, ductility and stiffness of the wall. However, drilling holes on both sides of the hollow / bucket wall to set anchor bars or tie bars, hang steel mesh, and then spray reinforced concrete or apply mortar requires home reinforcement. During construction, turnover and relocation need to be considered, and more wet operations are involved, the construction period is long, and the later decoration restoration is high. When reinforcing a single-panel wall or mortar surface layer, due to the existence of the cavity, the wall structure glue planting bars cannot be reliably anchored.

[0007] Carbon fiber cloth reinforcement is to stick carbon fiber cloth on the wall surface for reinforcement, which can improve the seismic bearing capacity and deformation capacity of the wall to a certain extent. However, sticking carbon fiber to reinforce hollow brick walls only improves the shear resistance within the wall plane, and cannot improve the integrity of the structure. When the two pages of the hollow brick wall are split or peeled off, the reinforcement effect is lost.

[0008] In view of this, the present invention is proposed. Summary of the invention

[0009] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a hollow / bucket wall anchor reinforcement structure and a reinforcement method.

[0010] In order to achieve the above-mentioned invention object, this application provides the following technical solutions:

[0011] The first object of the present application is to provide a hollow / bucket wall anchor reinforcement structure, comprising:

[0012] A wall body, wherein the wall body has thin cavity walls arranged at intervals along the length direction or the height direction, a cavity is formed between adjacent thin cavity walls, and the thin cavity walls are provided with through openings;

[0013] An anchor rod, the anchor rod is arranged along the length direction or height direction of the wall body, and the anchor rod passes through the through opening of the thin wall of the cavity;

[0014] An outer sleeve, the outer sleeve being sleeved on the anchor rod;

[0015] A filling medium is filled between the outer sleeve and the anchor rod to form a lotus root node body in the cavity between adjacent cavity thin walls, and the cross-sectional area of ​​the lotus root node body is greater than the cross-sectional area of ​​the through-hole.

[0016] Optionally, the outer jacket is a fiber fabric cloth, the filling medium includes a high-fluidity adhesive slurry, and part of the high-fluidity adhesive slurry seeps out of the fiber fabric cloth and is bonded and fixed to the thin wall of the cavity.

[0017] Optionally, it further comprises a support system, wherein the support system is arranged between the anchor rod and the outer sleeve;

[0018] The support system has a closed state and an expanded state in which the outer sleeve is expanded.

[0019] Optionally, the support system comprises a plurality of umbrella-shaped brackets, each of which is sequentially and spaced apart from the anchor rod along the length direction of the anchor rod;

[0020] Each of the umbrella-shaped supports has an open state and a closed state.

[0021] Optionally, each of the umbrella-shaped supports is located in a cavity between two adjacent cavity thin walls.

[0022] Optionally, the umbrella-shaped support comprises an inner ring body and an outer ring body, the inner ring body is sleeved on the anchor rod, the outer ring body is a flexible structure, and a plurality of movable struts are arranged between the inner ring body and the outer ring body;

[0023] When the umbrella-shaped support is fully expanded, the outer ring body and the inner ring body are located in the same plane.

[0024] Optionally, the support system further includes a cable, which is respectively connected to the movable support rods of each umbrella-shaped support to drive each umbrella-shaped support to switch to an open state or a closed state.

[0025] The second object of the present application is to provide a construction method for the above-mentioned hollow / bucket wall anchor reinforcement structure, comprising:

[0026] Step S1, determining the anchor rod setting position, opening a hole in the wall body to form a through hole in each cavity thin wall;

[0027] Step S2, after cleaning the debris in the hole, insert the anchor rod with the outer sleeve into the hole;

[0028] Step S3, spreading the outer jacket so that the outer jacket is in a lotus root shape between the thin walls of adjacent cavities;

[0029] Step S4: inject high-fluidity cementitious slurry into the outer jacket by using a pressure pump, and wait for the high-fluidity cementitious slurry to solidify.

[0030] Optionally, the hollow / bucket wall anchor reinforcement structure has a support system, the support system comprising cables and a plurality of umbrella-shaped brackets;

[0031] Step S2 also includes the step of installing each umbrella-shaped bracket on the anchor rod;

[0032] Step S3 includes the step of pulling the cable to cause each umbrella-shaped support to open the outer cover.

[0033] By adopting the above technical solution, the present invention has the following beneficial effects:

[0034] The hollow / bucket wall anchor reinforcement structure and reinforcement method applied for in practice connect and reinforce the thin walls of the hollow / bucket walls through anchor rods, and use filling medium to fill the space between the anchor rods and the outer jacket to form a lotus node structure, which can simply and quickly ensure that the inserted anchor rods are stably set in the wall, ensure the stability of the wall body, and improve the integrity and shear, compression and earthquake resistance of the wall body.

[0035] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0037] Figure 1 It is a schematic cross-sectional structure diagram of the hollow wall anchor reinforcement structure provided by the present application;

[0038] Figure 2 It is a cross-sectional schematic diagram of the hollow wall anchor reinforcement structure support system provided by the present application in a closed state and without being filled with a medium;

[0039] Figure 3 It is a perspective structural schematic diagram of the hollow wall anchor reinforcement structure provided by the present application.

[0040] In the figure: a wall body 1, hollow space bricks 11, a through hole 111, an anchor rod 2, a jacket 3, a filling medium 4, an umbrella-shaped support 51, an inner ring body 511, an outer ring body 512, a movable support rod 513, and a cable 52.

[0041] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Embodiment 1

[0046] See also Figure 1-3 As shown, the embodiment of the present application provides a hollow / bucket wall anchor reinforcement structure, including a wall body 1, an anchor 2, a jacket 3 and a filling medium 4. The wall body 1 has a cavity thin wall arranged at intervals along the length direction or the height direction, and a cavity is formed between adjacent cavity thin walls, and the cavity thin wall is provided with a through hole 111. The anchor 2 is arranged along the length direction or the height direction of the wall body 1, and the anchor 2 is arranged to penetrate the through hole 111 of the cavity thin wall, and the jacket 3 is sleeved on the anchor 2. The filling medium 4 is filled between the jacket 3 and the anchor 2 to form a lotus root body in the cavity between adjacent cavity thin walls, and the cross-sectional area of ​​the lotus root body is greater than the cross-sectional area of ​​the through hole 111. Among them, when the anchor 2 is arranged horizontally (arranged along the length direction of the wall body 1), a ring beam structure can be formed by filling the filling medium 4 in the jacket 3, and when the anchor 2 is arranged vertically (arranged along the height direction of the wall body 1), a structural column structure can be formed by filling the filling medium 4 in the jacket 3. The hollow / bucket wall anchor reinforcement structure of the present embodiment connects and reinforces the thin walls of the hollow / bucket walls through the anchor rods 2, and uses the filling medium 4 to fill between the anchor rods 2 and the outer sleeve 3 to form a lotus node structure, which can simply and quickly ensure that the anchor rods 2 are stably arranged in the wall, ensure the stability of the wall body 1, and improve the integrity and shear resistance, compression resistance and earthquake resistance of the wall body 1. In addition, there is no need to enter the house during construction, the construction has little impact, is convenient and fast, and has a low cost.

[0047] It should be noted that the solution of this application is applicable to hollow walls and hollow walls. "Hollow walls" usually refer to walls built with hollow bricks (bricks with cavities or porous bricks), while "hollow walls" usually refer to hollow walls formed by solid bricks. The two have different structures. Figure 1 and Figure 2 As shown, when the main body of the wall is a hollow wall, the "cavity thin wall" of this application can be understood as the hollow space bricks 11 and mortar layer of the hollow wall. When the main body of the wall is a hollow wall, the "cavity thin wall" can be understood as the brick wall on the plane of the hollow bricks of the hollow wall that is perpendicular to the length direction of the anchor rod, and a through hole is opened on the brick wall to avoid the anchor rod 2, and a cavity is formed between adjacent brick walls. The drawings of this application partially show the anchor rod reinforcement structure of the hollow wall.

[0048] In a possible implementation, the outer jacket 3 is a fiber fabric, the filling medium 4 includes a high-fluidity adhesive slurry, and part of the high-fluidity adhesive slurry seeps out of the fiber fabric and is bonded and fixed to the thin wall of the cavity, thereby ensuring a stable connection and making the integrity and shear, compression and earthquake resistance of the wall stronger.

[0049] Among them, the high-fluidity cementitious slurry can be made of polymer mortar, grouting material, methacrylate, epoxy resin, etc., or other commonly used reinforcement materials.

[0050] In a possible implementation, the hollow / bucket wall anchor reinforcement structure also includes a support system, which is arranged between the anchor 2 and the outer jacket 3. The support system has a closed state and an open state in which the outer jacket 3 is opened. When the anchor 2 is pre-inserted into the through-hole 111 in the wall body 1, the support system is in a closed state for easy insertion. After insertion, it is ensured that the parts of the support system that can be opened and closed are on both sides of the thin wall of the cavity, which facilitates its opening. After the insertion is completed, the support system is adjusted to the open state, which can play a certain limiting role and can also prop up the outer jacket 3 to facilitate the filling medium 4 to be fully filled therein, further improving the reinforcement effect, and making the wall more resistant to shear, compression and seismic.

[0051] In a possible embodiment, the support system includes a plurality of umbrella-shaped brackets 51, each of which is arranged on the anchor rod 2 at intervals in sequence along the length direction of the anchor rod 2. Each of the umbrella-shaped brackets 51 has an open state and a closed state. The umbrella-shaped bracket 51 can be in an open or closed state like an umbrella, and after being opened, the outer sleeve 3 can be opened along the circumference of the anchor rod 2, so as to form a "lotus root node-like" shape after filling.

[0052] In a possible implementation, each of the umbrella-shaped brackets 51 is located in the cavity between two adjacent cavity thin walls. When it is a hollow wall, the umbrella-shaped bracket 51 is located in the cavity of the hollow brick, and when it is a hollow bucket, the umbrella-shaped bracket 51 is located in the cavity between adjacent bricks 11 in the hollow bucket. In this way, after being opened, a certain limiting effect can be formed between the cavity thin walls, and the edge of the through-hole 111 is prevented from blocking the opening of the umbrella-shaped bracket 51, and it is convenient to expand the position between the cavity thin walls, ensuring that the interface agent of the filling medium 4 between the cavity thin walls after filling is larger than the area of ​​the through-hole 111, ensuring that the anchor rod 2 and the filling medium 4 are stable relative to the wall body 1, thereby making the wall body more resistant to shear, compression and earthquake.

[0053] In a possible implementation, the umbrella-shaped support 51 includes an inner ring body 511 and an outer ring body 512, wherein the inner ring body 511 is sleeved on the anchor rod 2, and the outer ring body 512 is a flexible structure, and a plurality of movable struts 513 are arranged between the inner ring body 511 and the outer ring body 512. When the umbrella-shaped support 51 is fully opened, the outer ring body 512 and the inner ring body 511 are located in the same plane. Among them, the inner ring body 511 is fixedly sleeved on the anchor rod 2, and the outer ring body 512 can be a circular rubber band or a circular rope loop. During the switching process of opening or closing, the end of the movable strut 513 connected to the outer ring body 512 moves away from the anchor rod 2 or closes to the anchor rod 2, and the area enclosed by the outer ring body 512 after opening is larger than the cross-sectional area of ​​the anchor rod 2 and the area enclosed by the inner ring body 511. When the umbrella-shaped support 51 is fully opened, the movable support rod 513 is perpendicular to the anchor rod 2, and the area enclosed by the outer ring body 512 reaches the maximum value, ensuring that the outer sleeve 3 is supported to the maximum. After the filling medium 4 is filled, the anchor rod 2 is more firmly connected to the main wall.

[0054] In a possible implementation, the support system further includes a cable 52, and the cable 52 is respectively connected to the movable struts 513 of each umbrella-shaped support 51 to drive each umbrella-shaped support 51 to switch to an open state or a closed state. Among them, at least two movable struts 513 are connected with the cable 52. If only some of the movable struts 513 are connected with the cable 52, and the cable 52 is evenly distributed along the circumference of the anchor rod 2, the cable 52 pulls the connected movable struts 513 to rotate to an open or closed state, and other movable struts 513 are driven by the movable struts 513 connected with the cable 52 through the outer ring body 512 to rotate to an open or closed state. If each movable strut 513 is connected with a cable 52, all movable struts 513 are pulled by the cable 52 to rotate to an open or closed state. The more cables 52 there are, the better the effect of unfolding the umbrella-shaped bracket 51 will be. However, too many cables 52 will make the operation more troublesome, and the cables 52 will easily get tangled and knotted. After testing, it was found that two cables 52 can unfold the bulk bracket to a required expansion state. Therefore, it is preferred to set two cables 52, and the two cables 52 are respectively located on both sides of the anchor rod 2.

[0055] The cable 52 can be a flexible rope or a rigid metal wire. When the cable 52 is a flexible rope, the cable 52 can be connected to the end of the outer ring body 512 of the movable strut 513 or to the middle of the movable strut 513, preferably to the middle of the movable strut 513; when the cable 52 is a rigid metal wire, the cable 52 is connected to the middle of the movable strut 513. In this way, when the cable 52 pulls the movable strut 513, there is space for expansion, and after expansion, it is still within the range of the through-hole 111.

[0056] The cable 52 can be fixedly connected to the movable strut 513 , or movably connected to the movable strut 513 . The fixed connection is convenient for pulling, and the movable connection can be pulled first and then slid, which is more conducive to controlling the cable 52 within the range of the through-hole 111 .

[0057] Embodiment 2

[0058] Based on Example 1, see Figure 1-3 As shown, the embodiment of the present application provides a construction method of the hollow / bucket wall anchor 2 reinforcement structure as described in the first embodiment, comprising:

[0059] Step S1, determining the location of the anchor rod 2, opening a hole on the thin wall of the cavity on the wall body 1, so as to form a through opening on each thin wall of the cavity;

[0060] Step S2, after cleaning the debris in the hole, insert the anchor rod 2 with the outer sleeve 3 into the hole;

[0061] Step S3, spreading the outer jacket so that the outer jacket is in a lotus root shape between the thin walls of adjacent cavities;

[0062] Step S4: inject high-fluidity cementitious slurry into the outer jacket by using a pressure pump, and wait for the high-fluidity cementitious slurry to solidify.

[0063] In a possible embodiment, the hollow / bucket wall anchor 2 reinforcement structure has a support system, and the support system includes a cable 52 and a plurality of umbrella-shaped brackets 51;

[0064] Step S2 also includes the step of installing each umbrella-shaped bracket 51 on the anchor rod 2;

[0065] Step S3 includes the step of pulling the cable to cause each umbrella-shaped support to open the outer cover.

[0066] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A hollow / bucket wall anchor reinforcement structure, characterized in that: include: The wall body has thin cavity walls arranged at intervals along the length direction or the height direction, a cavity is formed between adjacent thin cavity walls, and the thin cavity walls are provided with through openings; An anchor rod, the anchor rod is arranged along the length direction or height direction of the wall body, and the anchor rod passes through the through opening of the thin wall of the cavity; An outer sleeve, the outer sleeve being sleeved on the anchor rod; A filling medium is filled between the outer sleeve and the anchor rod to form a lotus root node in the cavity between adjacent cavity thin walls, wherein the cross-sectional area of ​​the lotus root node is greater than the cross-sectional area of ​​the through opening; The outer jacket is a fiber fabric, the filling medium includes a high-fluidity adhesive slurry, and part of the high-fluidity adhesive slurry seeps out of the fiber fabric and is bonded and fixed to the thin wall of the cavity; Also included is a support system, the support system being disposed between the anchor rod and the outer sleeve; The support system has a closed state and an open state in which the outer jacket is open; The support system comprises a plurality of umbrella-shaped brackets, each of which is sequentially and spaced apart from the anchor rod along the length direction of the anchor rod; Each of the umbrella-shaped supports has an open state and a closed state; Each of the umbrella-shaped supports is located in a cavity between two adjacent cavity thin walls; The support system also includes a cable, which is respectively connected to each umbrella-shaped bracket to drive each umbrella-shaped bracket to switch to an open state or a closed state.

2. The construction method of the hollow / bucket wall anchor reinforcement structure as claimed in claim 1, characterized in that: include: Step S1, determining the anchor rod setting position, opening a hole in the wall body to form a through hole in each cavity thin wall; Step S2, after cleaning the debris in the hole, insert the anchor rod with the outer sleeve into the hole; Step S3, spreading the outer jacket so that the outer jacket is in a lotus root shape between the thin walls of adjacent cavities; Step S4, injecting high-fluidity cementitious slurry into the outer jacket by using a pressure pump, and waiting for the high-fluidity cementitious slurry to solidify; The hollow / bucket wall anchor reinforcement structure has a support system including cables and a plurality of umbrella-shaped brackets; Step S2 also includes the step of installing each umbrella-shaped bracket on the anchor rod; Step S3 includes the step of pulling the cable so that each umbrella-shaped support opens the outer cover.

Images