Tensioning type stone masonry wall reinforcing structure

Abstract

The utility model relates to a tensioning type stone masonry wall reinforcing structure which comprises L-shaped steel plates which are embedded and fixed in mortar joints of four corners on one side of a stone masonry wall. The two L-shaped steel plates are connected through a high-strength steel wire; the end part of the high-strength steel wire is tensioned and fixed on the L-shaped steel plate through a steel wire rope tapered end; the polymer mortar surface layer is arranged on one side of the stone masonry wall and covers the L-shaped steel plates and the high-strength steel wires; the high-strength steel wires are combined with the L-shaped steel plates and the polymer mortar, so that the lateral bearing capacity and the anti-seismic property of the stone masonry wall are improved, the overall stability of the stone masonry wall is remarkably improved, meanwhile, damage to an original stone masonry wall structure is avoided, the original building appearance is maintained, and the requirement for repairing historical buildings is met.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a tensioned stone masonry wall reinforcement structure. Background Art

[0002] In some buildings, due to many restrictions such as the design theories, building materials, and construction conditions at the time, the building materials, construction quality, structural seismic bearing capacity and structure used did not meet the requirements of current specifications, which had a great impact on the safety of the structure. The mortar strength of many walls was low, and the walls had to be reinforced before they could continue to be used.

[0003] For example, a Chinese patent published on March 28, 2012 with patent publication number CN102392542A discloses a method for single-sided reinforcement of existing masonry structures for earthquake resistance. A steel mesh is added to one side of the wall and connected with L-shaped through-wall steel bars to form a whole with the steel bars, thereby improving the earthquake resistance of the wall.

[0004] However, the prior art is to add a steel mesh on one side of the wall and integrate the steel mesh with the wall through the through-wall bars. The shortcomings of this technology are: (1) the thickness of the mortar joints between the blocks is usually relatively small, and the minimum diameter of ordinary steel bars is 6 mm, which makes it difficult to ensure that the through-wall bars can be inserted between the mortar joints; (2) even if the through-wall bars can be inserted into the mortar joints, the mortar at the mortar joints has very limited wrapping of the through-wall bars, resulting in weak pull-out resistance of the through-wall bars, which can be easily pulled out of the mortar joints under the action of lateral forces; (3) the cross-sectional area of ​​the through-wall bars is small, and the lateral The shear resistance is weak. Only a small amount of through-wall reinforcement cannot effectively ensure the overall common / cooperative force of the original wall and the steel mesh, resulting in the limited reinforcement effect of the steel mesh on the original wall. Therefore, the lateral stiffness and shear bearing capacity of the wall after reinforcement are not greatly improved; (4) Under the action of horizontal earthquake shear force, the wall generally has diagonal or cross-diagonal cracks along the diagonal. The steel mesh in this technology is orthogonally arranged in the vertical and horizontal directions and arranged throughout the wall, which is not only inefficient but also wasteful; (5) The thickness of the single side of the wall after reinforcement increases significantly, which significantly reduces the available space outside the wall. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tensioned stone masonry wall reinforcement structure to solve the above problems.

[0006] The utility model provides the following technical solutions:

[0007] A tensioned stone masonry wall reinforcement structure, comprising:

[0008] An L-shaped steel plate, wherein the L-shaped steel plate is embedded and fixed in the mortar joints at four corners of one side of the stone masonry wall;

[0009] High-strength steel wires connect the two L-shaped steel plates;

[0010] Wire rope lock heads, the ends of the high-strength steel wires are tensioned and fixed to the L-shaped steel plates through the wire rope lock heads;

[0011] Polymer mortar surface layer, the polymer mortar surface layer is arranged on one side of the stone masonry wall and covers the L-shaped steel plates and high-strength steel wires.

[0012] Preferably, one side of the L-shaped steel plate extends to the outside of the stone masonry wall, and a through groove for the high-strength steel wire to pass through is provided at the part where the L-shaped steel plate extends to the outside of the stone masonry wall.

[0013] Preferably, several of the high-strength steel wires cooperate to form a "mouth" shape and / or an "X" shape and / or a "one" shape structure.

[0014] Preferably, four "︹-shaped" high-strength steel wires are superimposed to form a "mouth" shape structure.

[0015] Preferably, through holes are provided on the L-shaped steel plate.

[0016] Preferably, grooves are provided in the mortar joints on one side of the stone masonry wall, the L-shaped steel plates are placed in the grooves, and the grooves are filled with polymer mortar for fixing the L-shaped steel plates.

[0017] Preferably, V-shaped nails are provided at the parts of the high-strength steel wires between the two L-shaped steel plates, and the V-shaped nails are driven into and fixed in the mortar joints of the stone masonry wall.

[0018] Preferably, the thickness of the polymer mortar surface layer is greater than 10 mm.

[0019] A construction method for a tensioned stone masonry wall reinforcement structure includes the following steps:

[0020] Chisel out grooves for accommodating L-shaped steel plates along the mortar joints at the four corners on one side of the stone masonry wall;

[0021] Press the polymer mortar into the grooves;

[0022] Before the polymer mortar starts to set, press the L-shaped steel plates into the grooves filled with polymer mortar;

[0023] After the polymer mortar in the grooves starts to set, pass the high-strength steel wires through the through grooves of the L-shaped steel plates, and lock the ends of the high-strength steel wires with wire rope lock heads;

[0024] Apply polymer mortar on one side of the stone masonry wall to form a polymer mortar surface layer, and the polymer mortar surface layer covers all the L-shaped steel plates and high-strength steel wires.

[0025] Preferably, a wire rope lock is provided in the middle of the high-strength steel wire between the two L-shaped steel plates. The wire rope lock knots the high-strength steel wire to form a knotting hole. It also includes a secondary connecting rope, which passes through several knotting holes to form a closed-loop sub-reinforcement system and is tightened.

[0026] Preferably, the secondary connecting rope is made of carbon fiber cloth or high-strength steel wire.

[0027] The utility model has the following beneficial technical effects:

[0028] The utility model utilizes the combination of high-strength steel wire, L-shaped steel plate and polymer mortar to enhance the lateral bearing capacity and seismic resistance of the stone masonry wall, and the overall stability of the stone masonry wall is significantly improved; the adopted unilateral non-destructive reinforcement method avoids damage to the original stone masonry wall structure and maintains the original building appearance, which meets the needs of historical building restoration; through the auxiliary connecting rope construction sub-reinforcement system, it can achieve differentiated and targeted on-demand reinforcement of key areas and weak areas, rather than blind comprehensive reinforcement; the reinforcement scheme is adjustable and controllable, and can adapt to different application scenarios and needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional view of the first embodiment;

[0030] Figure 2 is an overall schematic diagram of Embodiment 1;

[0031] Figure 3 yes Figure 2 Middle AA section;

[0032] Figure 4 yes Figure 2 Middle BB section;

[0033] Figure 5 yes Figure 3 Middle A-1 section;

[0034] Figure 6 yes Figure 4 Middle B-1 section;

[0035] Figure 7 It is a schematic diagram of the matching of high-strength steel wire and wire rope lock;

[0036] Figure 8 It is a schematic diagram of the coordination of two L-shaped steel plates and high-strength steel wire;

[0037] Fig. 9 This is the L-shaped steel plate drawing;

[0038] Fig.10 It is a schematic diagram of the wire rope lock;

[0039] Fig.11 It is a schematic diagram of a V-shaped nail;

[0040] Fig.12 is an overall schematic diagram of Embodiment 2;

[0041] Fig.13 yes Fig.12 Partial detail drawing of middle A;

[0042] Fig.14 is an overall schematic diagram of Embodiment 3;

[0043] Fig.15 yes Fig.14 Partial detail of middle C;

[0044] Fig.16 yes Fig.14 Partial detail drawing of middle B;

[0045] Fig.17 is an overall schematic diagram of Embodiment 4;

[0046] Fig.18 yes Fig.17 Partial detail of middle D.

[0047] The reference numerals in the figure are:

[0048] 1. Polymer mortar surface layer; 2. L-shaped steel plate; 3. Mortar joint; 4. Stone block; 5. Through groove; 6. Through hole; 7. High-strength steel wire; 8. Wire rope lock; 9. V-shaped nail; 10. Auxiliary connecting rope. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] Embodiment 1: Figure 1-Figure 11 As shown:

[0051] It includes a polymer mortar surface layer 1, an L-shaped steel plate 2, mortar joints 3, stone blocks 4, through grooves 5, through holes 6, high-strength steel wires 7, wire rope locks 8, V-shaped nails 9, and auxiliary connecting ropes 10. Grooves are chiseled at the mortar joints 3 at the four interior corners on the inner side of the stone masonry wall, and then these grooves are filled with polymer mortar to form a reinforcement foundation; then the L-shaped steel plate 2 is embedded in the grooves, and the L-shaped steel plate 2 serves as an anchor to fix the high-strength steel wires 7; after the polymer mortar begins to set, the high-strength steel wires 7 are passed through the through grooves 5 of the L-shaped steel plates 2 pre-embedded at the corners. The through grooves 5 are of a long strip structure, and then the ends of the high-strength steel wires 7 are locked with wire rope locks 8 to form an overall tension force-bearing system combined with a "mouth shape" and an "X shape"; finally, a layer of polymer mortar surface layer 1 is covered on the inner surface of the stone masonry wall to protect the reinforcement structure.

[0052] As Figure 8 shown, the high-strength steel wires 7 pass through the through grooves 5 of two adjacent L-shaped steel plates 2 and are knotted and fixed to the L-shaped steel plates 2 with wire rope locks 8 to form a "︹-shaped" high-strength steel wire arrangement; the four "︹-shaped" high-strength steel wires 7 are superimposed to form a "mouth" character structure ( Figure 2 ).

[0053] In the first embodiment, the implementation steps of the tension reinforcement technology are as follows:

[0054] (1) Chisel L-shaped grooves at the mortar joints 3 at the four interior corners on the inner side of the stone masonry wall, and clean the cavities, removing sundries and dust;

[0055] (2) Press the polymer mortar into the grooves. When filling the gaps, use appropriate tools, such as trowels, caulking knives, etc., to help fill the polymer mortar into the gaps and ensure uniform filling.

[0056] (3) Before the polymer mortar begins to set, press the L-shaped steel plate 2 into the center of the groove filled with polymer mortar, and use a leveling trowel to press and embed the joint reinforcement area to make the polymer mortar flat and full; it should be noted that the L-shaped steel plate 2 should extend beyond the outside of the groove to ensure that the through groove 5 is exposed outside the wall;

[0057] (4) After the polymer mortar begins to set, pass the high-strength steel wires 7 through the through grooves 5 of the L-shaped steel plates 2 pre-embedded at the four corners, and lock the ends of the high-strength steel wires 7 with wire rope locks 8; since the high-strength steel wires 7 are not easily bent, a "mouth-shaped" layout structure requires the use of four "︹-shaped" high-strength steel wires 7 for superposition and combination ( Figure 8 );

[0058] (5) At the intersection area of the high-strength steel wires 7, fix them with V-shaped nails 9 and nail them into the mortar joints 3 of the stone wall;

[0059] (6) Apply polymer mortar to the inner side of the stone masonry wall to cover the high-strength steel wire 7 and the L-shaped steel plate 2 to form a polymer mortar surface layer 1; the thickness of the polymer mortar surface layer 1 is applied as required, but should not be less than 10 mm; as required, the polymer mortar can only cover the area where the high-strength steel wire 7 is tensioned, or it can be pressed and applied along the entire wall surface.

[0060] Embodiment 2 ( Fig.12 ) mainly displays the local reinforcement of the main reinforcement system + sub-reinforcement system.

[0061] Embodiment 1 constitutes a main reinforcement system.

[0062] At this time, steps (1) to (3) are the same as those in Example 1. Based on step (4) in Example 1, the middle part of the high-strength steel wire 7 in the main reinforcement system can be knotted using the wire rope lock 8 to form a knot hole, and then the secondary connecting rope 10 is inserted into the knot hole to connect with the high-strength steel wire 7 in the main reinforcement system. Fig.12 The dashed lines (secondary connecting ropes 10) shown constitute a sub-reinforcement system, which builds a reinforced mesh sub-reinforcement system in a local area within the main reinforcement system.

[0063] Embodiment 3 ( Fig.14 ) mainly shows the implementation of the reinforcement of the stone masonry wall with windows. At this time, four main reinforcement areas should be divided along the top, bottom, left and right of the window, and then they can be reinforced separately according to the first embodiment, forming four main reinforcement systems around the window.

[0064] Embodiment 4 ( Fig.16 ) mainly shows the implementation of the stone masonry wall reinforcement of the door. At this time, three main reinforcement areas should be divided along the top, left and right of the door, and then they can be reinforced according to the first embodiment, forming three main reinforcement systems around the door.

[0065] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A tensioned stone masonry wall reinforcement structure, characterized in that: Including: An L-shaped steel plate (2), which is embedded and fixed in the mortar joints (3) at the four corners on one side of the stone masonry wall; High-strength steel wires (7), which are connected between the two L-shaped steel plates (2); Wire rope locks (8), and the ends of the high-strength steel wires (7) are tensioned and fixed to the L-shaped steel plates (2) through the wire rope locks (8); A polymer mortar surface layer (1), which is arranged on one side of the stone masonry wall and covers the L-shaped steel plate (2) and the high-strength steel wires (7).

2. A tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: One side of the L-shaped steel plate (2) extends to the outside of the stone masonry wall, and a through groove (5) for the high-strength steel wire (7) to pass through is provided at the part where the L-shaped steel plate (2) extends to the outside of the stone masonry wall.

3. A tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: A plurality of the high-strength steel wires (7) cooperate to form a "mouth" shape and / or an "X" shape and / or a "one" shape structure.

4. A tensioned stone masonry wall reinforcement structure according to claim 3, characterized in that: Four "︹-shaped" high-strength steel wires (7) are superimposed to form a "mouth" shape structure.

5. The tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: Through holes (6) are provided on the L-shaped steel plate (2).

6. A tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: Grooves are provided in the mortar joints (3) on one side of the stone masonry wall, the L-shaped steel plate (2) is placed in the grooves, and polymer mortar is filled in the grooves to fix the L-shaped steel plate (2).

7. The tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: V-shaped nails (9) are provided at the part of the high-strength steel wire (7) between the two L-shaped steel plates (2), and the V-shaped nails (9) are nailed and fixed in the mortar joints (3) of the stone masonry wall.

8. The tensioned stone masonry wall reinforcement structure according to claim 1, characterized in that: The thickness of the polymer mortar surface layer (1) is greater than 10 mm.

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