Top beam joint waterproof structure

Abstract

The utility model relates to the technical field of building waterproofing, in particular to a crown beam joint waterproof structure, a crown beam is located above an enclosure structure, the inner side of the crown beam extends towards a structural top plate, and a first waterproof layer extends to the enclosure structure along the upper surface of the structural top plate; the second waterproof layer extends upwards along the inner wall of the enclosure structure, is folded towards the upper part of the first waterproof layer and is connected with the first waterproof layer; the first protective layer is laid above the first waterproof layer, and the edge of the first protective layer extends to the inner wall of the enclosure structure; the second protection layer is arranged below the part, extending out of the inner wall of the enclosure structure, of the top beam towards the structure top plate, and extends downwards to be connected with the first protection layer into a whole. The top beam extends inwards by a certain thickness to form an installation space used for construction and containing of a multi-layer waterproof structure, the combined waterproof structure is formed through mutual lap joint of waterproof measures of the enclosure structure, the structural top plate and the structural side wall, and the waterproof effect of the joint of the top beam is enhanced through the combined waterproof layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of building waterproofing, and in particular relates to a crown beam node waterproof structure. Background Art

[0002] As one of the main construction methods for urban rail transit stations, open-cut underground stations are located below the groundwater level. During the construction and use of the station, they will be subject to the intrusion of groundwater. The construction of underground stations needs to face the problem of waterproof construction. If waterproof measures are not taken, it will cause great harm to the construction and use of the station structure, affecting the safety of construction and operation. A single waterproof measure often has limited effect on the waterproofing of underground stations and is not enough to guarantee the overall waterproofing effect. The existing technology adopts imperfect waterproof reinforcement measures for the joints between the top and bottom plates and the side walls, especially for the waterproof structure of the construction joints between the top plate and the crown beam. The waterproof system does not achieve multi-layer waterproofing, and the overall waterproofing effect is difficult to guarantee.

[0003] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art, and the utility model provides a crown beam node waterproof structure.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A crown-beam node waterproof structure, comprising:

[0007] A crown beam, the crown beam being located above the enclosure structure, the inner side of the crown beam extending toward the structural top plate to shield the joint between the enclosure structure and the structural top plate in the longitudinal direction;

[0008] a first waterproof layer, the first waterproof layer extending along the upper surface of the structural top plate to the enclosure structure;

[0009] a second waterproof layer, which extends upward along the inner wall of the enclosure structure, folds over the first waterproof layer, and is connected to the first waterproof layer;

[0010] a first protective layer, the first protective layer being laid above the first waterproof layer, with an edge of the first protective layer extending to the inner wall of the enclosure structure;

[0011] The second protective layer is arranged below the portion of the crown beam extending toward the structural top plate from the inner wall of the enclosure structure, and extends downward to be connected with the first protective layer as a whole.

[0012] Preferably, a waterproof reinforcement layer is provided between the second waterproof layer and the first waterproof layer. The waterproof reinforcement layer is located at the connection between the second waterproof layer and the first waterproof layer, and is folded toward the first waterproof layer along with the second waterproof layer. The width of the folded portion of the waterproof reinforcement layer is smaller than the width of the folded portion of the second waterproof layer.

[0013] Preferably, the second waterproof layer extends upward to the lower surface of the crown beam and then folds back downward to the first waterproof layer, and extends along the upper surface of the first waterproof layer.

[0014] Preferably, an isolation layer is provided between the first waterproof layer and the first protective layer, and the isolation layer extends to the second waterproof layer.

[0015] Preferably, a leveling layer is provided on the inner wall of the enclosure structure.

[0016] Preferably, a structural side wall corresponding to the structural top plate is provided on the inner side of the enclosure structure, and the waterproof reinforcement layer extends to below the construction joint between the structural side wall and the structural top plate.

[0017] Preferably, the edge of the second waterproof layer is connected to the first protective layer via a rubber adhesive tape.

[0018] Preferably, the first waterproof layer is polyurethane coating, and the second waterproof layer is EVA plastic waterproof board.

[0019] Beneficial effects: The crown beam extends inward to a certain thickness to form an installation space for the construction and accommodation of a multi-layer waterproof structure. A combined waterproof structure is formed by overlapping the waterproof measures of the enclosing structure, the structural top plate and the structural side wall. The waterproof effect of the crown beam node is enhanced by the combined waterproof layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1 This is a simplified structural diagram of the waterproof structure in a specific embodiment provided by the present utility model.

[0022] In the figure: 1. Crown beam; 2. Enclosing structure; 3. Second protective layer; 4. First protective layer; 5. Second waterproof layer; 6. Leveling layer; 7. Structural side wall; 8. Waterproof reinforcement layer; 9. Structural top plate; 10. Isolation layer; 11. First waterproof layer. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 are within the scope of protection of the present invention.

[0024] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0026] like Figure 1 As shown, a crown beam node waterproof structure includes a crown beam 1, a first waterproof layer 11, a second waterproof layer 5, a first protective layer 4 and a second protective layer 3. First, the underground station is excavated. During the excavation process, the retaining structure 2 and the crown beam 1 are constructed. Specifically, the crown beam 1 is located above the retaining structure 2. The outer side of the crown beam 1 and the outer side of the retaining structure 2 are in the same plane. The inner side of the crown beam 1 extends toward the structural top plate 9 to longitudinally block the joint between the retaining structure 2 and the structural top plate 9. There is a certain distance between the ground of the crown beam 1 and the structural top plate 9, which is used to form an installation space for waterproof structure construction to meet the flatness of the structure after the construction is completed.

[0027] In a specific embodiment, the first waterproof layer 11 is laid on the upper surface of the structural top plate 9 and surrounds the structure 2 along the structural top plate 9. The second waterproof layer 5 is arranged on the inner wall of the surrounding structure 2. During the construction process, the second waterproof layer 5 is constructed as the foundation pit is excavated. The upper edge of the second waterproof layer 5 is fixed to the lower edge of the crown beam 1 by structural nails. The second waterproof layer 5 extends upward along the inner wall of the surrounding structure 2 to above the structural top plate 9, then folds over above the first waterproof layer 11 and is connected to the first waterproof layer 11, thereby forming a complete waterproof surface to ensure the waterproof effect.

[0028] A first protective layer 4 is laid above the first waterproof layer 11, and the edge of the first protective layer 4 extends to the inner wall of the enclosure structure 2. The second protective layer 3 is arranged below the portion of the crown beam 1 extending toward the structural top plate 9 from the inner wall of the enclosure structure 2, and extends downward to be connected to the first protective layer 4 as a whole, thereby protecting the waterproof structure through the first protective layer 4 and the second protective layer 3, thereby improving the service life of the waterproof structure.

[0029] In this embodiment, the first protective layer 4 and the second protective layer 3 are both concrete layers, specifically 70 mm thick fine stone concrete layers.

[0030] In an optional embodiment, a waterproof reinforcement layer 8 is provided between the second waterproof layer 5 and the first waterproof layer 11. The waterproof reinforcement layer 8 may be an asphalt waterproof membrane, which is used to connect the second waterproof layer 5 and the first waterproof layer 11 to improve the waterproof ability of the joint between the two. Specifically, the waterproof reinforcement layer 8 is located at the connection between the second waterproof layer 5 and the first waterproof layer 11. The lower edge of the waterproof reinforcement layer 8 is located at the joint between the structural top plate 9 and the enclosing structure 2, and the other side is folded toward the first waterproof layer 11 along with the second waterproof layer 5. The width of the folded part of the waterproof reinforcement layer 8 is smaller than the width of the folded part of the second waterproof layer 5, so that the waterproof reinforcement layer 8 is covered and protected by the second waterproof layer 5.

[0031] In an optional embodiment, the upper edge of the second waterproof layer 5 is fixed to the upper edge of the enclosure structure 2 by means of structural nails, and then heated to softness by a spray gun and folded downward at the lower edge of the crown beam 1, thereby forming a double-layer second waterproof layer 5 located above the structural top plate 9. The inside of the second waterproof layer 5 folded downward from the lower surface of the crown beam 1 to the first waterproof layer 11 can be coated with glue, or fixed to the inner side of the enclosure structure 2 from the inside to the outside by means of structural nails. After the second waterproof layer 5 is bent to the first waterproof layer 11, it extends along its upper surface, thereby forming a waterproof cofferdam above the structural top plate 9 to prevent the outside groundwater from penetrating above the structural top plate 9, thereby improving the waterproof effect.

[0032] In an optional embodiment, an isolation layer 10 is provided between the first waterproof layer 11 and the first protective layer 4 . The isolation layer 10 is used to prevent plant roots above the structural top plate 9 from penetrating downward through the first waterproof layer 11 . The isolation layer 10 extends to the second waterproof layer 5 .

[0033] The inner wall of the enclosure structure 2 is provided with a leveling layer 6, which can ensure that the second waterproof layer 5 can be evenly and firmly attached to the base surface through leveling.

[0034] In an optional embodiment, a structural side wall 7 corresponding to the structural top plate 9 is provided on the inner side of the enclosure structure 2. The structural side wall 7 is used to support the structural top plate 9. The waterproof reinforcement layer 8 extends to below the construction joint between the structural side wall 7 and the structural top plate 9, thereby further ensuring the waterproof effect at the construction joint. The edge of the second waterproof layer 5 is connected to the first protective layer 4 by a rubber adhesive tape, so that the two are tightly connected as one.

[0035] The first waterproof layer 11 is a polyurethane coating, and the second waterproof layer 5 is an EVA plastic waterproof board.

[0036] Water-swelling water-stop strips are provided between the second protective layer 3 and the first protective layer 4 and between the second protective layer 3 and the crown beam 1, thereby further ensuring the waterproof effect.

[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, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A crown beam node waterproof structure, characterized in that: include: A crown beam, the crown beam being located above the enclosure structure, the inner side of the crown beam extending toward the structural top plate to shield the joint between the enclosure structure and the structural top plate in the longitudinal direction; a first waterproof layer, the first waterproof layer extending along the upper surface of the structural top plate to the enclosure structure; a second waterproof layer, which extends upward along the inner wall of the enclosure structure, folds over the first waterproof layer, and is connected to the first waterproof layer; a first protective layer, the first protective layer being laid above the first waterproof layer, with an edge of the first protective layer extending to the inner wall of the enclosure structure; The second protective layer is arranged below the portion of the crown beam extending toward the structural top plate from the inner wall of the enclosure structure, and extends downward to be connected with the first protective layer as a whole.

2. The crown beam node waterproof structure according to claim 1, characterized in that: A waterproof reinforcement layer is provided between the second waterproof layer and the first waterproof layer. The waterproof reinforcement layer is located at the connection between the second waterproof layer and the first waterproof layer, and is folded toward the first waterproof layer along with the second waterproof layer. The width of the folded portion of the waterproof reinforcement layer is smaller than the width of the folded portion of the second waterproof layer.

3. The crown beam node waterproof structure according to claim 2, characterized in that: The second waterproof layer extends upward to the lower surface of the crown beam, then folds back downward to the first waterproof layer, and extends along the upper surface of the first waterproof layer.

4. The crown beam node waterproof structure according to claim 3, characterized in that: An isolation layer is provided between the first waterproof layer and the first protective layer, and the isolation layer extends to the second waterproof layer.

5. The crown beam node waterproof structure according to claim 1, characterized in that: The inner wall of the enclosure structure is provided with a leveling layer.

6. The crown beam node waterproof structure according to claim 2, characterized in that: The inner side of the enclosure structure is provided with a structural side wall corresponding to the structural top plate, and the waterproof reinforcement layer extends to below the construction joint between the structural side wall and the structural top plate.

7. The crown beam node waterproof structure according to claim 1, characterized in that: The edge of the second waterproof layer is connected to the first protective layer through a rubber adhesive tape.

8. The crown beam node waterproof structure according to claim 1, characterized in that: The first waterproof layer is polyurethane coating, and the second waterproof layer is EVA plastic waterproof board.

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