A cast-in-place large-span exterior wall anti-cracking structure with waterproof function

Abstract

The utility model discloses a cast-in-place large-span exterior wall anti-cracking structure with waterproof function, including exterior wall concrete, a non-through induction joint is provided on the exterior wall concrete, the exterior wall horizontal reinforcement in the exterior wall concrete is a continuous structure relative to the induction joint position, a waterproof grease layer is provided in the induction joint, a through expansion joint is provided on the exterior wall concrete, the exterior wall horizontal reinforcement in the exterior wall concrete is a disconnected structure relative to the expansion joint position, a polystyrene board is provided in the expansion joint, and a waterproof grease layer is provided on the side of the polystyrene board. The beneficial effects of the utility model are as follows: an anti-cracking induction joint is provided at every 10-14m interval of the exterior wall body, an expansion joint is provided at every 32-40m interval, a wall-column joint is provided between the wall body and the column body, and waterproof isolation and flexible deformation effects are achieved by configuring a waterproof grease layer and polystyrene filler to seal the joint, effectively offsetting the temperature cracks and shrinkage deformation cracks of the wall body.

Description

Technical Field

[0001] The utility model belongs to the technical field of building exterior wall construction, and in particular relates to a cast-in-place large-span exterior wall anti-cracking structure with a waterproof function. Background Art

[0002] The functions of stations, factories, large conference (exhibition) centers and related commercial public projects determine the architectural structure form of large spans and large spaces. The outer enclosure walls, roof parapet walls, railings and other components that match the large span and large space structure are often very large in size. One-time cast-in-place molding can easily induce secondary diseases such as temperature cracks, shrinkage cracks, and uneven settlement cracks in large span walls.

[0003] In summary, it is necessary to invent an exterior wall expansion joint structure with a waterproof function for the exterior walls of large-span buildings to meet the partition, shielding, protection and durability requirements of the exterior wall enclosure structure. Utility Model Content

[0004] The utility model aims to provide a cast-in-place large-span exterior wall anti-crack structure with waterproof function, thereby solving the crack problem of the existing large-span exterior wall.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A cast-in-place large-span exterior wall anti-cracking structure with waterproof function comprises exterior wall concrete, a non-through induced joint is provided on the exterior wall concrete, the exterior wall horizontal reinforcement in the exterior wall concrete is a continuous structure relative to the induced joint, a waterproof grease layer is provided in the induced joint, a through expansion joint is provided on the exterior wall concrete, the exterior wall horizontal reinforcement in the exterior wall concrete is a disconnected structure relative to the expansion joint, a polystyrene board is provided in the expansion joint, and a waterproof grease layer is provided on the side of the polystyrene board.

[0007] Furthermore, the exterior wall concrete is provided with exterior wall vertical bars, the exterior wall vertical bars in the exterior wall concrete are arranged continuously relative to the induced joint positions, and the exterior wall vertical bars in the exterior wall concrete are arranged disconnected relative to the expansion joints.

[0008] Furthermore, oppositely positioned induction joints are provided on both sides of the exterior wall concrete.

[0009] Furthermore, the widths of the induction joint and the expansion joint are both 15 to 25 mm.

[0010] Furthermore, the arrangement interval of the induction joints is 10 to 14 m, and the arrangement interval of the expansion joints is 32 to 40 m.

[0011] Furthermore, frame columns are arranged between the exterior wall concrete, a through wall-column joint is opened between the exterior wall concrete and the frame columns, the exterior wall horizontal reinforcement in the exterior wall concrete is a disconnected structure relative to the wall-column joint, a polystyrene board is arranged in the wall-column joint, and a waterproof grease layer is arranged on the side of the polystyrene board.

[0012] Furthermore, the exterior wall concrete is provided with exterior wall vertical bars, and the exterior wall vertical bars in the exterior wall concrete are all arranged to be disconnected relative to the wall column joints.

[0013] Furthermore, the width of the wall column seams is 15 to 25 mm.

[0014] Furthermore, the end portions of the horizontal reinforcements of the exterior wall are broken into a bent shape.

[0015] Furthermore, the bending shape is L-shaped.

[0016] The beneficial effects of the utility model are as follows: an anti-crack induction joint is arranged at every 10-14m on the exterior wall, an expansion joint is arranged at every 32-40m, and a wall-column joint is arranged between the wall and the column. By configuring a waterproof grease layer and polystyrene filler to seal the joints, waterproof isolation and flexible deformation effects are achieved, effectively offsetting the temperature cracks and shrinkage deformation cracks of the wall.

[0017] The aforementioned main scheme of the utility model and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and protected by the utility model; and in the utility model, (non-conflicting options) options and other options can also be freely combined. After understanding this scheme, those skilled in the art can understand that there are many combinations based on the existing technology and common knowledge, all of which are technical schemes to be protected by the utility model, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the induced seam structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the expansion joint structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the strong Everest structure of the utility model.

[0021] In the figure: 1-exterior wall concrete, 2-exterior wall horizontal reinforcement, 3-exterior wall vertical reinforcement, 4-frame column, 5-induction joint, 6-expansion joint, 7-wall-column joint, 8-waterproof paste layer, 9-polystyrene board. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0023] refer to Figure 1 to Figure 3As shown, a cast-in-place large-span exterior wall anti-cracking structure with waterproof function includes exterior wall concrete 1, exterior wall horizontal reinforcement 2, exterior wall vertical reinforcement 3, frame column 4, induced joint 5, expansion joint 6, wall column joint 7, waterproof paste layer 8 and polystyrene board 9, which is applied to large-span exterior walls, parapets, hanging panels, railings and other structures.

[0024] The exterior wall concrete 1 is a structure formed by supporting the formwork and pouring concrete. The exterior wall concrete 1 is provided with exterior wall horizontal ribs 2 and exterior wall vertical ribs 3, that is, the exterior wall horizontal ribs 2 and exterior wall vertical ribs 3 are tied and fixed in advance and cast together with the concrete. When pouring the exterior wall concrete 1, it is necessary to mark the positions of each seam in advance, and then reserve the corresponding seam structure through isolation strips. The frame column 4 is the column of the building structure, and the exterior wall concrete 1 is interrupted and separated when it encounters the frame column 4.

[0025] The external wall concrete 1 is provided with an induction joint 5 that does not penetrate inside and outside, and the width of the induction joint 5 is 15-25 mm (preferably 20 mm, and can also be uniformly and evenly distributed according to the overall size of the structure to ensure the overall beauty and crack resistance of the partition spacing), and the arrangement interval of the induction joint 5 is 10-14 m (preferably 12 m, and can also be uniformly and evenly distributed according to the overall size of the structure to ensure the overall beauty and crack resistance of the partition spacing) to ensure that the induction space is sufficient and evenly distributed. The external wall concrete 1 is provided with induction joints 5 that are positioned opposite to each other on both the inside and outside sides to ensure that the induction effects on the front and back sides are relative and can cooperate at the cross section of the external wall concrete 1.

[0026] The exterior wall horizontal reinforcement 2 in the exterior wall concrete 1 is a continuous structure relative to the induced joint 5, that is, the exterior wall horizontal reinforcement 2 at this location is not disconnected. The exterior wall vertical reinforcement 3 in the exterior wall concrete 1 is continuously arranged relative to the induced joint 5, that is, the exterior wall vertical reinforcement 3 at this location can still be arranged, and there is no need to excessively consider the influence of the setting of the induced joint on the arrangement of the exterior wall vertical reinforcement 3.

[0027] The induced joint 5 is a crack-prone part set in the concrete structure by appropriately reducing the constraints of the steel bars on the concrete. A waterproof grease layer 8 is provided in the induced joint 5. The waterproof grease layer 8 does not affect the structural function of the induced joint, but also has the effect of waterproofing and anti-seepage, thereby protecting the induced joint.

[0028] An expansion joint 6 that runs through the outside and inside is opened on the exterior wall concrete 1. The width of the expansion joint 6 is 15-25 mm (preferably 20 mm, and can also be uniformly and evenly distributed according to the overall size of the structure to ensure the overall beauty and crack resistance requirements of the sub-sealing spacing), and the expansion joint 6 is arranged at an interval of 32-40 m (preferably 36 m, and can also be uniformly and evenly distributed according to the overall size of the structure to ensure the overall beauty and crack resistance requirements of the sub-sealing spacing) to ensure that the wall expansion space is sufficient and evenly distributed.

[0029] The exterior wall horizontal reinforcement 2 in the exterior wall concrete 1 is a disconnected structure relative to the expansion joint 6, that is, the exterior wall horizontal reinforcement 2 does not cross the expansion joint 6. The end of the exterior wall horizontal reinforcement 2 is L-shaped, which protects the vertical reinforcement of the end structure and has a better concrete wrapping effect. The exterior wall vertical reinforcement 3 in the exterior wall concrete 1 is arranged in a disconnected arrangement relative to the expansion joint 6, that is, the exterior wall vertical reinforcement 3 is not arranged in the expansion joint 6.

[0030] A polystyrene board 9 is arranged in the expansion joint 6 to fill the through expansion joint to prevent the penetration of rainwater. A waterproof grease layer 8 is arranged on both inner and outer sides of the polystyrene board 9 to further improve the waterproof capability.

[0031] A through wall column joint 7 is provided between the exterior wall concrete 1 and the frame column 4. The structural principle of the wall column joint 7 is similar to that of the expansion joint 6, except that a frame column 4 is added in the middle. The width of the wall column joint 7 is 15 to 25 mm (preferably 20 mm, and can also be uniformly and evenly distributed according to the overall size of the structure to ensure the overall beauty and crack resistance requirements of the enclosed spacing) to ensure sufficient space for expansion and contraction. The position of the wall column joint 7 is arranged following the frame column 4.

[0032] The exterior wall horizontal reinforcement 2 in the exterior wall concrete 1 is a disconnected structure relative to the wall column joint 7, that is, the exterior wall horizontal reinforcement 2 does not cross the wall column joint 7. The end of the exterior wall horizontal reinforcement 2 is L-shaped, which protects the vertical reinforcement of the end structure and has a better concrete wrapping effect. The exterior wall vertical reinforcement 3 in the exterior wall concrete 1 is arranged in a disconnected arrangement relative to the wall column joint 7, that is, the exterior wall vertical reinforcement 3 is not arranged in the wall column joint 7.

[0033] A polystyrene board 9 is arranged in the wall column seam 7 to fill the through wall column seam to block the penetration of rainwater. A waterproof grease layer 8 is arranged on the outer side of the polystyrene board 9 to further improve the waterproof capability.

[0034] The workflow of this utility model:

[0035] On-site measurement and layout are carried out in advance in the large-span exterior wall construction area, and the positions of the induced joints and expansion joints are marked to guide the binding of cast-in-place structural steel bars and the support of the formwork. Induced joints (20mm wide, steel bars are not disconnected) are set in the 12m interval area, expansion joints (20mm wide, steel bars are disconnected, and the length of the horizontal bar end hook is 10d) are set in the 36m interval area, and wall column joints (20mm wide, steel bars are disconnected, and the length of the horizontal bar end hook is 10d) are set at the position where they meet the structural columns. Before the wall formwork is closed, rubber foam isolation strips are embedded in the above induced joints, expansion joints and wall column joints. After the formwork is removed and the concrete is cured, the embedded rubber foam isolation strips are removed, the steel bars are treated with rust and corrosion protection, and the gaps are cleaned. Polystyrene filler is used to seal the joints and waterproof paste is used to connect and form the wall decoration surface.

[0036] The above basic examples and further optional examples of the utility model can be freely combined to form multiple embodiments, which are all embodiments that can be adopted and claimed for protection by the utility model. In the scheme of the utility model, each optional example can be arbitrarily combined with any other basic examples and optional examples.

[0037] 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 cast-in-place large-span exterior wall anti-cracking structure with waterproof function, comprising exterior wall concrete (1), characterized in that: The exterior wall concrete (1) is provided with a non-through induction joint (5), the exterior wall horizontal reinforcement (2) in the exterior wall concrete (1) is in a continuous structure relative to the induction joint (5), a waterproof grease layer (8) is provided in the induction joint (5), a through expansion joint (6) is provided on the exterior wall concrete (1), the exterior wall horizontal reinforcement (2) in the exterior wall concrete (1) is in a disconnected structure relative to the expansion joint (6), a polystyrene board (9) is provided in the expansion joint (6), and a waterproof grease layer (8) is provided on the side of the polystyrene board (9).

2. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 is characterized by: The exterior wall concrete (1) is provided with exterior wall vertical bars (3), the exterior wall vertical bars (3) in the exterior wall concrete (1) are continuously arranged relative to the induced joints (5), and the exterior wall vertical bars (3) in the exterior wall concrete (1) are disconnectedly arranged relative to the expansion joints (6).

3. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 or 2, characterized in that: Both sides of the exterior wall concrete (1) are provided with induction joints (5) that are opposite to each other.

4. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 is characterized in that: The widths of the induction joint (5) and the expansion joint (6) are both 15 to 25 mm.

5. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 or 4, characterized in that: The arrangement interval of the induction joints (5) is 10 to 14 m, and the arrangement interval of the expansion joints (6) is 32 to 40 m.

6. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 is characterized by: A frame column (4) is arranged between the exterior wall concrete (1), a through wall column joint (7) is provided between the exterior wall concrete (1) and the frame column (4), the exterior wall horizontal reinforcement (2) in the exterior wall concrete (1) is a disconnected structure relative to the wall column joint (7), a polystyrene board (9) is arranged in the wall column joint (7), and a waterproof grease layer (8) is provided on the side of the polystyrene board (9).

7. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 6 is characterized by: The exterior wall concrete (1) is provided with exterior wall vertical bars (3), and the exterior wall vertical bars (3) in the exterior wall concrete (1) are all arranged to be disconnected relative to the wall column joints (7).

8. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 6 is characterized by: The width of the wall column seam (7) is 15-25 mm.

9. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 1 or 6, characterized in that: The end of the external wall horizontal rib (2) is broken and is in a bent shape.

10. The cast-in-place large-span exterior wall anti-cracking structure with waterproof function according to claim 9, characterized in that: The bending shape is L-shaped.

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