Anti-cracking wall structure

Abstract

The utility model discloses an anti-cracking wall body structure which comprises a new wall body and an old wall body, a reinforcing mortar layer is laid on a connecting seam between the new wall body and the old wall body, short steel fibers which are distributed in a disordered mode are mixed in the reinforcing mortar layer, and a plurality of inserting grooves and inserting holes are alternately formed in the end, located on the new wall body, of the old wall body. The end, located on the old wall body, of the new wall body is fixedly connected with a plurality of insertion blocks capable of being inserted into the insertion grooves. When a new wall body is built, a plurality of inserting grooves and inserting holes are correspondingly formed in the old wall body, corresponding inserting blocks and reinforcing rods are sequentially inserted into the inserting grooves and the inserting holes when the new wall body is built, the new wall body and the old wall body are combined into a whole, and meanwhile a reinforcing mortar layer with short steel fibers is laid between the new wall body and the old wall body. The compression resistance and tensile strength of the connecting part between the new wall body and the old wall body can be improved, and cracks are not prone to occurring after actual construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of wall crack prevention, in particular to an anti-cracking wall structure. Background Art

[0002] At present, when renovating or repairing old buildings, it is often necessary to carry out certain construction on the basis of the original building. Usually, the most common one is to build a new wall on the basis of the original old wall, so that the new wall and the old wall are connected into an integrated wall.

[0003] Since the old and new walls are not built at the same time, gaps between the old and new walls are easily formed after construction due to various factors. In order to solve the above problems, the current relevant technology directly buries multiple tie rods in the old and new walls to connect the two walls and reduce the chance of cracks.

[0004] However, after actual construction, the new and old walls are affected by thermal expansion and contraction, and the joints between the new and old walls are prone to deformation. The connecting force of the reinforcement alone is unable to provide sufficient support between the new and old walls, and cracks are prone to occur during actual use. Utility Model Content

[0005] The purpose of the utility model is to provide a crack-proof wall structure in order to solve the problem that the connection force through the tie rods cannot meet the support between the new and old walls and cracks are easily generated during actual use.

[0006] The technical solution adopted by the utility model is as follows: an anti-cracking wall structure, comprising a new wall and an old wall, wherein a reinforcing mortar layer is laid at the joint between the new wall and the old wall, and short steel fibers are mixed and distributed inside the reinforcing mortar layer;

[0007] The old wall is provided with a plurality of insertion slots and insertion holes alternately at one end of the new wall, and the new wall is fixedly connected with a plurality of insertion blocks that can be inserted into the insertion slots at one end of the old wall.

[0008] In a preferred embodiment, a plurality of reinforcing rods are embedded from top to bottom at one end of the new wall body close to the old wall body, the other end of the reinforcing rod is inserted into the insertion hole, and the space between the reinforcing rod and the insertion hole is filled with anchor glue.

[0009] In a preferred embodiment, the reinforcing rod is embedded in the new wall to a depth of 15-25 cm, and the insertion hole is 7-10 cm in depth.

[0010] In a preferred embodiment, a plurality of groups of support cones are embedded in the old wall at 15 cm to 20 cm on one side close to the new wall and at the outer end of the new wall, and a layer of sound insulation mortar is laid on the support cones.

[0011] In a preferred embodiment, the outer end of the sound insulation mortar layer is covered with an anti-cracking layer, and the anti-cracking layer includes a grid layer hung on the sound insulation mortar layer, and the grid layer is covered with an outer mortar layer.

[0012] In a preferred embodiment, the outer end of the anti-cracking layer is covered with a decorative layer.

[0013] In a preferred embodiment, the mesh layer is entirely made of galvanized steel wire mesh.

[0014] In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effects of the utility model are as follows: when building a new wall, the corresponding insertion blocks and reinforcing rods are inserted into the provided insertion grooves and insertion holes in sequence, and the new wall and the old wall are combined into a whole. At the same time, a reinforcing mortar layer with short steel fibers is laid between the new wall and the old wall, which can improve the compressive and tensile strength of the connecting part between the new wall and the old wall, and cracks are not easy to appear after actual construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional plan structure in the utility model when viewed from above;

[0016] Figure 2 for Figure 1 The enlarged structure schematic diagram at A in the middle;

[0017] Figure 3 It is a schematic diagram of the cross-sectional plan structure of the combination of the new wall and the old wall in the utility model;

[0018] Figure 4 This is a schematic diagram of the planar structure of the anti-cracking layer in the utility model.

[0019] Markings in the figure: 1-old wall, 2-decorative layer, 3-anti-cracking layer, 301-grid layer, 302-external mortar layer, 4-new wall, 5-support cone, 6-sound insulation mortar layer, 7-anchor glue, 8-socket, 9-reinforcement rod, 10-reinforcement mortar layer, 11-short steel fiber, 12-insertion groove, 13-insertion block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Reference Figure 1-4A crack-proof wall structure includes a new wall 4 and an old wall 1. A reinforcing mortar layer 10 is laid at the joint between the new wall 4 and the old wall 1. Short steel fibers 11 are mixed and distributed inside the reinforcing mortar layer 10. The reinforcing mortar layer 10 with short steel fibers 11 is laid between the new wall 4 and the old wall 1, which can improve the compressive and tensile strength of the connecting part between the new wall 4 and the old wall 1. After actual construction, cracks are not easy to appear.

[0022] Reference Figure 2 and Figure 3 As shown, the old wall 1 is located at one end of the new wall 4 and is alternately provided with a plurality of insertion grooves 12 and insertion holes 8, and the new wall 4 is located at one end of the old wall 1 and is fixedly connected with a plurality of insertion blocks 13 that meet the requirements of inserting the insertion grooves 12, and the new wall 4 is located at one end of the old wall 1. A plurality of reinforcing rods 9 are embedded from top to bottom at one end of the new wall 4 close to the old wall 1, and the other end of the reinforcing rod 9 is inserted into the insertion hole 8. When building the new wall 4, the corresponding insertion blocks 13 and reinforcing rods 9 are inserted into the insertion grooves 12 and the insertion hole 8 in turn, and the new wall 4 and the old wall 1 are combined into a whole, so that the connection stability between the new wall 4 and the old wall 11 is strengthened, and the strength of the new wall 4 and the old wall 11 after combination is also improved.

[0023] The space between the reinforcing rod 9 and the insertion hole 8 is filled with anchoring glue 7. The added anchoring glue 7 can improve the strength and stability of the new wall 4 and the old wall 11 after they are combined.

[0024] The space between the insertion groove 12 and the insertion block 13 is also filled with a reinforcing mortar layer 10 with short steel fibers 11 .

[0025] In this embodiment, the reinforcing rod 9 is embedded in the new wall 4 to a depth of 15 to 25 cm, and the insertion hole 8 is embedded in the new wall 4 to a depth of 7 to 10 cm.

[0026] It should be noted that the reinforcing rod 9 is preferably a steel bar, and the length of the reinforcing rod 9 is preferably 22 cm to 35 cm.

[0027] In the present embodiment, a plurality of groups of support cones 5 are embedded in the old wall 1 at 15 cm to 20 cm on one side close to the new wall 4 and on the outer end of the new wall 4. A layer of sound insulation mortar layer 6 is laid on the support cones 5. The plurality of groups of support cones 5 can support the sound insulation mortar layer 6 after the sound insulation mortar layer 6 is laid, thereby reducing the possibility of cracking and hollowing of the wall after long-term use.

[0028] The sound insulation mortar layer 6 can play a role in heat preservation and sound insulation, and is not prone to hollowing and cracking.

[0029] Among them, when the old wall 1 is covered with a cement layer 15cm~20cm away from the new wall 4, the cement layer needs to be removed before building the new wall 4 to ensure the combination effect of the old wall 1 and the new wall 4 in the later stage.

[0030] It should be noted that a layer of interface agent (not shown in the figure) is covered between the sound insulation mortar layer 6 and the old wall 1 15 cm to 20 cm on the side close to the new wall 4 and the new wall 4 to improve the bonding strength between the sound insulation mortar layer 6 and the old wall 1 and the new wall 4.

[0031] In this embodiment, the outer end of the sound insulation mortar layer 6 is covered with an anti-cracking layer 3, and the anti-cracking layer 3 includes a grid layer 301 hung on the sound insulation mortar layer 6, and an outer mortar layer 302 is laid on the grid layer 301. Through the cooperation of the grid layer 301 and the outer mortar layer 302, the combined strength of the anti-cracking layer 3 itself can be improved, and it is not easy to crack during later use.

[0032] In this embodiment, the outer end of the anti-cracking layer 3 is covered with a decorative layer 2 .

[0033] In this embodiment, the mesh layer 301 is entirely made of galvanized steel wire mesh. The use of galvanized steel wire mesh can ensure the overall strength of the mesh layer 301 while having higher corrosion resistance than traditional steel wire mesh.

[0034] When the new wall 4 is built, the device first opens a plurality of corresponding insertion grooves 12 and insertion holes 8 in the old wall 1. When the new wall 4 is built, the corresponding insertion blocks 13 and reinforcing rods 9 are inserted into the insertion grooves 12 and the insertion holes 8 in turn, and the new wall 4 and the old wall 1 are combined into a whole. At the same time, a reinforcing mortar layer 10 with short steel fibers 11 is laid between the new wall 4 and the old wall 1, which can improve the compressive and tensile strength of the connection part between the new wall 4 and the old wall 1, and cracks are not easy to appear after actual construction.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crack-proof wall structure, comprising a new wall (4) and an old wall (1), characterized in that: A reinforcing mortar layer (10) is laid at the connection joint between the new wall (4) and the old wall (1), and short steel fibers (11) are mixed and distributed inside the reinforcing mortar layer (10); The old wall (1) is provided with a plurality of insertion slots (12) and insertion holes (8) alternately at one end of the new wall (4), and the new wall (4) is fixedly connected with a plurality of insertion blocks (13) that can be inserted into the insertion slots (12) at one end of the old wall (1).

2. The anti-cracking wall structure according to claim 1, characterized in that: A plurality of reinforcing rods (9) are embedded from top to bottom at one end of the new wall (4) close to the old wall (1); the other end of the reinforcing rod (9) is inserted into the insertion hole (8); and the space between the reinforcing rod (9) and the insertion hole (8) is filled with rebar glue (7).

3. The anti-cracking wall structure according to claim 2, characterized in that: The reinforcing rod (9) is embedded in the new wall (4) to a depth of 15 to 25 cm, and the insertion hole (8) is 7 to 10 cm in depth.

4. The anti-cracking wall structure according to claim 1, characterized in that: A plurality of groups of support cones (5) are embedded in the old wall (1) at a position 15 cm to 20 cm from one side of the new wall (4) and at the outer end of the new wall (4), and a layer of sound insulation mortar (6) is laid on the support cones (5).

5. The anti-cracking wall structure according to claim 4, characterized in that: The outer end of the sound insulation mortar layer (6) is covered with an anti-cracking layer (3), and the anti-cracking layer (3) comprises a mesh layer (301) hung on the sound insulation mortar layer (6), and the mesh layer (301) is covered with an outer mortar layer (302).

6. The anti-cracking wall structure according to claim 5, characterized in that: The outer end of the anti-cracking layer (3) is covered with a decorative layer (2).

7. The anti-cracking wall structure according to claim 5, characterized in that: The mesh layer (301) is entirely made of galvanized steel wire mesh.

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