Masonry wall reinforcing device and method

Abstract

The invention discloses a masonry wall reinforcing device and method, and relates to the technical field of masonry wall reinforcing, the masonry wall reinforcing device comprises a precast slab arranged on the outer side of a wall to be reinforced, and the precast slab is provided with a plurality of staggered longitudinal joints and transverse joints; one end of the connecting part is fixedly connected with a to-be-reinforced wall body, and the other end of the connecting part is fixedly connected with the joint of the longitudinal seam and the transverse seam; and the slurry layer is positioned between the prefabricated slab and the wall body to be reinforced. According to the masonry wall reinforcing device and method, labor and time are saved, and the thickness of the surface layer is easy to control.

Description

Technical Field

[0001] The invention relates to the technical field of masonry wall reinforcement, and in particular to a masonry wall reinforcement device and method. Background Art

[0002] One way to reinforce masonry walls is to use HP-FRCC (high performance fiber-reinforced cement-based composite), which is manually spread and pressed to form a reinforcement surface layer, and then the surface layer is maintained. This reinforcement method is a wet operation method, which is labor-intensive and time-consuming, and the thickness of the surface layer is difficult to control. Summary of the invention

[0003] The object of the present invention is to provide a masonry wall reinforcement device and method to solve the problems existing in the above-mentioned prior art, save labor and time, and the thickness of the surface layer is easy to control.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a masonry wall reinforcement device, comprising:

[0006] A prefabricated plate is arranged outside the wall to be reinforced, and the prefabricated plate is provided with a plurality of staggered longitudinal and transverse seams;

[0007] A connecting portion, one end of which is fixedly connected to the wall to be reinforced, and the other end of which is fixedly connected to the intersection of the longitudinal seam and the transverse seam;

[0008] The slurry layer is located between the prefabricated board and the wall to be reinforced.

[0009] Preferably, the connecting part includes a screw, one end of which is embedded in the wall to be reinforced, and the other end is fixedly connected to a steel plate. A connecting plate is fixedly provided at the intersection of the longitudinal seam and the transverse seam, and the connecting plate is fixedly connected to the side of the steel plate away from the screw.

[0010] Preferably, a recess is formed on a side of the prefabricated panel close to the wall to be reinforced.

[0011] Preferably, the steel plate is a square structure, and the side length of the steel plate is not less than 100 mm; the width of the transverse seam is 50 mm, and the widths of the longitudinal seam and the transverse seam are the same.

[0012] Preferably, the thickness of the slurry layer is 15-20 mm.

[0013] Preferably, the prefabricated panel comprises a plurality of prefabricated support panels of the same structure, and the plurality of prefabricated support panels are sequentially spliced, so that the longitudinal seam is formed between two adjacent prefabricated support panels arranged horizontally, and the transverse seam is formed between two adjacent prefabricated support panels arranged vertically.

[0014] Preferably, the height and width of the prefabricated support plate are both less than 1000 mm.

[0015] The present invention also provides a masonry wall reinforcement method, comprising the following steps:

[0016] S100, making prefabricated panels;

[0017] S200, knock off the plaster layer on the surface of the wall to be reinforced and clean the wall at the construction site;

[0018] S300, installing the connection part and the prefabricated panel to the outside of the wall to be reinforced;

[0019] S400, uses high-pressure grouting to press the grout between the precast panel and the wall to be reinforced;

[0020] S500, manual grouting is used at longitudinal and transverse joints;

[0021] S600, the prefabricated panel is puttyed and painted on the side away from the wall to be processed.

[0022] Preferably, step S300 includes:

[0023] S310 drills holes in the wall to be reinforced and plants reinforcing screws, and welds steel plates on the side where the screws are away from the wall to be reinforced;

[0024] S320 installs prefabricated support plates, and multiple staggered longitudinal and transverse seams are reserved between the prefabricated support plates. Connecting plates are welded to steel plates at the intersections of the longitudinal and transverse seams.

[0025] Preferably, the thickness of the prefabricated board is 8mm-12mm. The prefabricated board is made of HP-FRCC material, which has high strength and can be very thin. The total thickness of the prefabricated board plus the slurry layer is 23mm-32mm, which reduces the overall thickness.

[0026] Compared with the prior art, the present invention has achieved the following technical effects:

[0027] The present invention is different from the existing wet operation method of manual spreading and pressing. The present invention adopts dry operation, that is, the reinforcement material is made into a prefabricated board, the prefabricated board is fitted and fixed to the outside of the wall to be reinforced, and there is a grouting space between the prefabricated board and the wall to be reinforced, and then a slurry layer is poured in the grouting space. The slurry layer is a mature high-strength grouting material. The slurry layer and the prefabricated board are subjected to force together, thereby realizing the reinforcement of the wall. Since the prefabricated board is a pre-made equal-size structure, there is no need to manually spread and press it on the wall, which saves time and labor, and the thickness of the prefabricated board can be controlled as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 This is a schematic structural diagram of a masonry wall reinforcement device according to one embodiment of the present invention;

[0030] Figure 2 A schematic diagram of a partial cross-sectional structure of a masonry wall reinforcement device according to one embodiment of the present invention;

[0031] Figure 3 It is a partially enlarged schematic diagram of a masonry wall reinforcement device according to one embodiment of the present invention;

[0032] In the figure: 1-wall to be reinforced, 2-prefabricated board, 201-prefabricated supporting board, 3-screw, 4-steel plate, 5-connecting plate, 6-slurry layer, 7-longitudinal joint, 8-transverse joint. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The object of the present invention is to provide a masonry wall reinforcement device and method to solve the problems existing in the above-mentioned prior art, save labor and time, and the thickness of the surface layer is easy to control.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] refer to Figure 1 , Figure 2 , Figure 3As shown, the present invention provides a masonry wall reinforcement device, including a prefabricated panel 2, a connecting portion and a slurry layer 6. The prefabricated panel 2 is manufactured in a prefabrication factory to ensure quality. The prefabricated panel 2 is arranged on the outside of the wall 1 to be reinforced. In this embodiment, the prefabricated panel 2 is formed by sequentially splicing a plurality of prefabricated support panels 201 with the same structure. The height and width of the prefabricated support panels 201 are both less than 1000 mm. A longitudinal seam 7 is formed between two adjacent prefabricated support panels 201 arranged horizontally, and a transverse seam 8 is formed between two adjacent prefabricated support panels 201 arranged vertically. One end of the connecting portion is fixedly connected to the wall 1 to be reinforced, and the other end is fixedly connected to the intersection of the longitudinal seam 7 and the transverse seam 8. The slurry layer 6 is located between the prefabricated panel 2 and the wall 1 to be reinforced. The prefabricated board 2 of this embodiment is made of HP-FRCC material, a high performance fiber-reinforced cement-based composite material (HP-FRCC for short), whose constituent materials are high-strength cement, silica fume, limestone powder, fly ash, fine sand, POM fiber, water reducer, and water. The water-cement ratio of HP-FRCC is 0.17, the compressive strength is not less than 80MPa, the ultimate tensile strain is 1.1%, and the elastic modulus is 40Gpa.

[0037] In order to ensure effective force transmission and facilitate the positioning and fixation of the prefabricated panel 2 before grouting, in a specific embodiment, the connection part is made of screw rod 3, steel plate 4 and connecting plate 5. One end of the screw rod 3 is embedded in the wall 1 to be reinforced, and the other end is fixedly welded to the steel plate 4. The steel plate 4 is a square structure, and the side length of the steel plate 4 is not less than 100 mm. A connecting plate 5 is fixedly provided at the intersection of the longitudinal seam 7 and the transverse seam 8. The width of the transverse seam 8 is 50 mm, and the width of the longitudinal seam 7 and the transverse seam 8 is the same. The connecting plate 5 is adapted to the connection point of the longitudinal seam 7 and the transverse seam 8, and the connecting plate 5 is fixedly welded to the steel plate 4 away from the screw rod 3, so that the prefabricated panel 2 is accurately positioned and the connection is more firm and temperature-controlled.

[0038] In a preferred embodiment, a concave groove is formed on the side of the prefabricated panel 2 close to the wall 1 to be reinforced to increase the friction resistance.

[0039] Based on the above masonry wall reinforcement device, the present invention also provides a masonry wall reinforcement method, comprising the following steps:

[0040] S100, manufacturing prefabricated board 2, the compressive strength of prefabricated board 2 is not less than 80MPa, the ultimate tensile strain is 1.1%, and the elastic modulus is 40Gpa. The thickness of prefabricated board 2 is determined by the design, usually 8mm-12mm;

[0041] S200, knock off the plaster layer on the masonry surface and clean the wall at the construction site.

[0042] S300, drilling holes on the wall 1 to be reinforced and embedding the reinforcing screws 3, the screws 3 are welded to the steel plate 4, the diameter of the screws 3 is usually not less than 10mm, the side length of the steel plate 4 is usually not less than 100mm, and the thickness is usually not less than 10mm. Install the prefabricated board 2, leaving a plurality of longitudinal seams 7 and transverse seams 8 with a width of about 50mm on the prefabricated board 2, and use a connecting plate 5 to weld the longitudinal seams 7 and transverse seams 8 to the pre-buried steel plate 4 at the intersection of the vertical and horizontal points to ensure effective transmission of force.

[0043] S400, using a high-pressure grouting method to press the polymer mortar into between the prefabricated panel 2 and the wall 1 to be reinforced, Figure 1 The position indicated by the arc arrow in the figure is the grouting port position of the polymer mortar; the thickness of the grouting is usually 15-20 mm, so that the polymer mortar and the wall 1 to be reinforced are firmly bonded, and the polymer mortar and the prefabricated board 2 are firmly bonded.

[0044] S500, HP-FRCC material is used for manual grouting at the longitudinal joints 7 and transverse joints 8 to complete the masonry wall reinforcement construction. Since the precast panel 2 is a prefabricated equal-size structure, it does not need to be manually pressed on the wall, which saves time and labor, and the thickness of the precast panel 2 can be controlled as needed.

[0045] S600, the outer surface of the prefabricated board 2 is flat, and there is no need to make a mortar leveling layer, and the putty and paint surface layer can be directly applied.

[0046] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A masonry wall reinforcement device, characterized in that: include: A prefabricated plate is arranged outside the wall to be reinforced, and the prefabricated plate is provided with a plurality of staggered longitudinal and transverse seams; A connecting portion, one end of which is fixedly connected to the wall to be reinforced, and the other end of which is fixedly connected to the intersection of the longitudinal seam and the transverse seam; The slurry layer is located between the prefabricated board and the wall to be reinforced.

2. The masonry wall reinforcement device according to claim 1, characterized in that: The connecting part includes a screw rod, one end of which is embedded in the wall to be reinforced, and the other end is fixedly connected to a steel plate. A connecting plate is fixedly provided at the intersection of the longitudinal seam and the transverse seam, and the connecting plate is fixedly connected to the side of the steel plate away from the screw rod.

3. The masonry wall reinforcement device according to claim 1, characterized in that: The prefabricated board is provided with a dent on one side close to the wall to be reinforced.

4. The masonry wall reinforcement device according to claim 2, characterized in that: The steel plate is of a square structure, and the side length of the steel plate is not less than 100 mm; the width of the transverse seam is 50 mm, and the widths of the longitudinal seam and the transverse seam are the same.

5. The masonry wall reinforcement device according to claim 1, characterized in that: The thickness of the slurry layer is 15-20 mm.

6. The masonry wall reinforcement device according to claim 1, characterized in that: The prefabricated panel comprises a plurality of prefabricated support panels with the same structure. The plurality of prefabricated support panels are spliced ​​in sequence, and the longitudinal seam is formed between two adjacent prefabricated support panels arranged horizontally, and the transverse seam is formed between two adjacent prefabricated support panels arranged vertically.

7. The masonry wall reinforcement device according to claim 6, characterized in that: The height and width of the prefabricated support plate are both less than 1000 mm.

8. A masonry wall reinforcement method, characterized in that: The steps include: S100, making prefabricated panels; S200, knock off the plaster layer on the surface of the wall to be reinforced and clean the wall at the construction site; S300, installing the connection part and the prefabricated panel to the outside of the wall to be reinforced; S400, uses high-pressure grouting to press the grout between the precast panel and the wall to be reinforced; S500, manual grouting is used at longitudinal and transverse joints; S600, the prefabricated panel is puttyed and painted on the side away from the wall to be processed.

9. The masonry wall reinforcement method according to claim 8, characterized in that: Step S300 includes: S310 drills holes in the wall to be reinforced and plants reinforcing screws, and welds steel plates on the side where the screws are away from the wall to be reinforced; S320 installs prefabricated support plates, and multiple staggered longitudinal and transverse seams are reserved between the prefabricated support plates. The intersections of the longitudinal and transverse seams are welded with connecting plates and steel plates.

10. The masonry wall reinforcement method according to claim 9, characterized in that: The thickness of the prefabricated board is 8mm-12mm.

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