Underground drainage square ditch deformation joint waterproof structure

Abstract

The utility model relates to a waterproof structure for a deformation joint of an underground drainage square ditch, which belongs to the technical field of waterproof structures and comprises a concrete base plate, a square ditch bottom plate, square ditch side plates, side reinforcing steel bars and a rubber waterstop, fixing grooves are arranged on the concrete base plate on two sides of the deformation joint, and adhesive mortar layers are arranged in the fixing grooves. The two ends of the rubber waterstop are warped upwards and extend into the deformation joints of the square ditch side plates, the outer walls of the two sides of the rubber waterstop are supported on the side steel bars, and limiting binding steel bar frames are arranged on the inner walls of the two sides of the rubber waterstop. Waterproof in the deformation joint is of an integral structure, the waterproof sealing effect is better, the two sides of the bottom of the rubber waterstop are fixed through the adhesive mortar layer, and the two sides of the top of the rubber waterstop are fixed between the square ditch bottom plate and the concrete base plate in a pouring mode after being pressed through the reinforcement cage. And the front and rear sides of the two ends of the rubber waterstop are poured in the square ditch side plates on the front and rear sides of the deformation joint, so that fixation is firmer.

Description

Technical Field

[0001] The utility model relates to a waterproof structure for deformation joints of an underground drainage square culvert, belonging to the technical field of waterproof structures. Background Technique

[0002] In the project of underground drainage square culverts, deformation joints are necessary structures to cope with the thermal expansion and contraction of structures, settlement differences and vibration stresses. The underground drainage square culvert includes a square culvert bottom plate and square culvert side plates arranged on a concrete substrate at the bottom of a foundation pit. The deformation joints are arranged on the cross-sections of the drainage square culvert and the substrate. The traditional waterproof structure for deformation joints is to respectively arrange waterstop belts on the square culvert bottom plate and the square culvert side plates, and then connect and fix the waterstop belts. This causes poor sealing at the connection, affecting waterproofing. Content of the Utility Model

[0003] The utility model provides a waterproof structure for deformation joints of an underground drainage square culvert to solve the problems existing in the above background technique.

[0004] The utility model relates to a waterproof structure for deformation joints of an underground drainage square culvert, including a concrete substrate arranged at the bottom of a foundation pit. A square culvert bottom plate is poured on the top of the concrete substrate. Square culvert side plates are arranged on both sides of the square culvert bottom plate. A plurality of deformation joints are arranged along the length direction of the square culvert bottom plate, the square culvert side plates and the concrete substrate. A steel reinforcement cage is arranged in the square culvert bottom plate. A plurality of side steel bars with the bottom fixed on the steel reinforcement cage are arranged along the length direction in the middle of the square culvert side plates. A rubber waterstop belt is arranged at the deformation joint between the concrete substrate and the square culvert bottom plate. Fixed grooves are arranged on the concrete substrates on both sides of the deformation joint. A bonding mortar layer for bonding and fixing both sides of the rubber waterstop belt is arranged in the fixed grooves. The bottom surface of the end of the steel reinforcement cage presses on the rubber waterstop belt above the bonding mortar layer. Both ends of the rubber waterstop belt tilt upwards and extend into the deformation joints of the square culvert side plates. Both outer walls of the rubber waterstop belt are supported at the side steel bars. Limiting binding steel bar frames are arranged at both inner walls of the rubber waterstop belt.

[0005] As a preference, an elastic waterproof sealant I is filled in the deformation joint in the square culvert bottom plate above the rubber waterstop belt, which can better fill and seal the deformation joint.

[0006] As a preference, an elastic waterproof sealant II is filled in the deformation joints in the square culvert side plates on both sides of the rubber waterstop belt, which can better fill and seal the deformation joints.

[0007] As a preference, a plurality of supporting longitudinal bars are arranged vertically along the inner side of the side steel bars to increase the stability of the square culvert side plates. The supporting longitudinal bars are bound and fixed on the side steel bars. Both outer side walls of both ends of the rubber waterstop belt are attached to the supporting longitudinal bars, facilitating the support on the front and back sides of the tilted ends of the rubber waterstop belt.

[0008] As a preference, the limited binding steel bar framework includes four vertical steel bars arranged in a square shape. Square stirrups are bound and fixed on the outer sides of the vertical steel bars. The ends of the square stirrups are fixed on the side steel bars. The limited binding steel bar framework can increase the strength of the side plate of the square culvert here, and the limited binding steel bar framework is fixed by the square stirrups, with higher strength. The bottoms of the vertical steel bars are fixed on the steel bar cage.

[0009] As a preference, an elastic waterproof sealant III is filled in the deformation joint on the concrete substrate below the rubber water stop belt, with better waterproof effect and support for the middle bottom of the rubber water stop belt.

[0010] As a preference, sealing grooves are provided at the tops of the side plates of the square culvert on the front and rear sides of the deformation joint. Rubber protection belts are provided in the sealing grooves. Elastic waterproof sealant IV is provided at the tops of the rubber protection belts. Sealing slots for inserting the tops of the rubber water stop belts are provided at the bottoms of the rubber protection belts, increasing the sealing effect at the top of the deformation joint.

[0011] The utility model has the following beneficial effects:

[0012] The middle of the rubber water stop belt is located in the deformation joint between the concrete substrate and the bottom plate of the square culvert. The two ends of the rubber water stop belt are upturned and extend into the deformation joint of the side plate of the square culvert, making the waterproofing in the deformation joint an integral structure with better waterproof sealing effect. The two sides of the bottom of the rubber water stop belt are fixed through the bonding mortar layer, and the two sides of the top are fixed between the bottom plate of the square culvert and the concrete substrate after being compacted by the steel bar cage and poured. The two ends of the rubber water stop belt are upturned and the front and rear sides of the two ends are poured into the side plates of the square culvert on the front and rear sides of the deformation joint, with more firm fixation. The two side edges of the two ends of the rubber water stop belt are limited at the side steel bars by the limited binding steel bar framework to prevent the rubber water stop belt from sagging. Description of the Drawings

[0013] Figure 1 is the front view structural schematic diagram of the utility model;

[0014] Figure 2 is Figure 1 partial structural schematic of Figure 1 ;

[0015] Figure 3 is Figure 1 partial structural schematic of Figure 2 ;

[0016] Figure 4 is the side structural schematic diagram at the deformation joint;

[0017] Figure 5 is Figure 4 the enlarged structural schematic diagram at A in

[0018] Figure 6 is Figure 4Schematic diagram of the enlarged structure at B in the [original language not specified];

[0019] In the figure: 1, concrete base plate; 2, side plate of the square trench; 3, side reinforcement; 4, square stirrup; 5, supporting longitudinal reinforcement; 6, bonding mortar layer; 7, rubber waterstop; 8, steel reinforcement cage; 9, bottom plate of the square trench; 10, rubber protection belt; 11, elastic waterproof sealant IV; 12, vertical reinforcement; 13, elastic waterproof sealant I; 14, elastic waterproof sealant II; 15, sealing slot; 16, elastic waterproof sealant III; 17, fixing groove. Specific implementation manner

[0020] The following further illustrates the present utility model in conjunction with embodiments.

[0021] Embodiment 1, as Figures 1 to 6 shown, the present utility model is a waterproof structure for the deformation joint of an underground drainage square trench, including a concrete base plate 1 arranged at the bottom of the foundation pit. A bottom plate 9 of the square trench is poured on the top of the concrete base plate 1. Side plates 2 of the square trench are arranged on both sides of the bottom plate 9 of the square trench. Multiple deformation joints are arranged along the length direction of the bottom plate 9 of the square trench, the side plates 2 of the square trench. A steel reinforcement cage 8 is arranged in the bottom plate 9 of the square trench. Multiple side reinforcements 3 with the bottom fixed on the steel reinforcement cage 8 are arranged in the middle of the side plates 2 of the square trench along the length direction. A rubber waterstop 7 is arranged at the deformation joint between the concrete base plate 1 and the bottom plate 9 of the square trench. Fixing grooves 17 are arranged on the concrete base plate 1 on both sides of the deformation joint. A bonding mortar layer 6 for bonding and fixing the two side edges of the rubber waterstop 7 is arranged in the fixing grooves 17. The bottom surface of the end of the steel reinforcement cage 8 presses on the rubber waterstop 7 above the bonding mortar layer 6. Both ends of the rubber waterstop 7 are upturned and extend into the deformation joint of the side plates 2 of the square trench. The outer walls on both sides of the rubber waterstop 7 are supported at the side reinforcements 3. A limiting and binding steel reinforcement frame is arranged at the inner walls on both sides of the rubber waterstop 7.

[0022] The underground drainage rectangular culvert is constructed in sections along its length direction. The deformation joints are set between adjacent sections of the underground drainage rectangular culvert. During construction, first, the foundation pit is excavated, then a pouring groove is dug in the middle of the foundation pit and compacted. Then, a concrete base plate 1 is poured in the pouring groove and the top of the concrete base plate 1 is leveled. Fixed grooves 17 are made at the front and rear ends. After the concrete base plate 1 dries, a bonding mortar layer 6 is filled in the fixed grooves 17. Then, the middle of the rubber water stop 7 is aligned with the middle of the deformation joint of the concrete base plate 1, and the front and rear side parts of the middle of the rubber water stop 7 are respectively bonded and fixed on the top of the bonding mortar layer 6. Then, a steel reinforcement cage 8 is tied on the concrete base plate 1, and the bottom of the front and rear ends of the steel reinforcement cage 8 presses on the rubber water stop 7 above the bonding mortar layer 6. Then, the two ends of the rubber water stop 7 are bent upwards, and side steel bars 3 are tied and fixed on the left and right sides of the steel reinforcement cage 8. Then, a limiting tying steel bar frame is tied and fixed on the outer side of the end of the steel reinforcement cage 8, and the limiting tying steel bar frame is located inside the upturned rubber water stop 7. Then, the formwork of the culvert bottom plate 9 can be arranged, and the culvert bottom plate 9 is poured. After the culvert bottom plate 9 dries, the side parts of the rubber water stop 7 above the bonding mortar layer 6 will be covered. Then, the formwork of the culvert side plate 2 can be arranged, and the culvert side plate 2 is poured. When the culvert side plate 2 is poured, the front and rear side parts of the upturned rubber water stop 7 will be poured inside.

[0023] Embodiment 2, on the basis of Embodiment 1, an elastic waterproof sealant I 13 is filled in the deformation joint in the culvert bottom plate 9 above the rubber water stop 7. After the culvert bottom plate 9 dries, the elastic waterproof sealant I 13 is filled in the upper deformation joint of the rubber water stop 7. Of course, a foam board can also be filled first, and then the top of the foam board is sealed with the elastic waterproof sealant I 13 to reduce the use of the elastic waterproof sealant I 13.

[0024] An elastic waterproof sealant II 14 is filled in the deformation joint in the culvert side plate 2 on both sides of the rubber water stop 7. After the culvert side plate 2 dries, the elastic waterproof sealant I 13 is filled in the deformation joints on the left and right sides of the upturned rubber water stop 7. Of course, a foam board can also be filled first, and then the top and the left and right outer sides of the foam board are sealed with the elastic waterproof sealant I 13 to reduce the use of the elastic waterproof sealant I 13.

[0025] A plurality of support longitudinal bars 5 are arranged vertically along the inner side of the side steel bars 3. The support longitudinal bars 5 are tied and fixed on the side steel bars 3, and the outer side walls of the two ends of the rubber water stop 7 are attached to the support longitudinal bars 5. After the side steel bars 3 are tied and fixed, the plurality of front and rear side steel bars 3 can be tied and fixed together by using the support longitudinal bars 5.

[0026] The limit binding steel bar frame includes four vertical steel bars 12 arranged in a square shape. Square stirrups 4 are fixedly bound to the outer sides of the vertical steel bars 12, and the ends of the square stirrups 4 are fixed to the side steel bars 3. When binding the limit binding steel bar frame, first bind and fix the four vertical steel bars 12 in a square shape to the steel bar cage 8, then bind and fix the square stirrups 4 to the outer sides of the four vertical steel bars 12, and bind and fix the ends of the square stirrups 4 to the side steel bars 3.

[0027] The deformation joint in the concrete substrate 1 below the rubber waterstop 7 is filled with elastic waterproof sealant III 16. Before laying the rubber waterstop 7, first fill the deformation joint in the concrete substrate 1 with elastic waterproof sealant III 16.

[0028] Sealing grooves are provided at the tops of the square culvert side plates 2 on the front and rear sides of the deformation joint. A rubber protection belt 10 is provided in the sealing grooves. Elastic waterproof sealant IV 11 is provided at the top of the rubber protection belt 10, and a sealing slot 15 for inserting the top of the rubber waterstop 7 is provided at the bottom of the rubber protection belt 10. The rubber protection belt 10 has a certain elasticity. After the square culvert side plates 2 are dried, place the rubber protection belt 10 in the sealing grooves, insert the top of the rubber waterstop 7 into the sealing slot 15, and then fix the top of the rubber protection belt 10 with elastic waterproof sealant IV 11.

[0029] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] In the description of the present invention, the orientation or positional relationship indicated by the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention.

Claims

1. A waterproof structure for deformation joints of an underground drainage rectangular culvert, comprising a concrete base plate (1) arranged at the bottom of a foundation pit. A culvert bottom plate (9) is cast on the top of the concrete base plate (1). Culvert side plates (2) are arranged on both sides of the culvert bottom plate (9). Multiple deformation joints are arranged along the length direction of the culvert bottom plate (9), the culvert side plates (2), and the concrete base plate (1). A steel reinforcement cage (8) is arranged in the culvert bottom plate (9). Multiple side steel bars (3) with the bottom fixed on the steel reinforcement cage (8) are arranged along the length direction in the middle of the culvert side plates (2), and it is characterized in that: A rubber water stop (7) is provided at the deformation joint between the concrete base plate (1) and the bottom plate (9) of the square culvert. Fixed grooves (17) are provided on the concrete base plates (1) on both sides of the deformation joint. A bonding mortar layer (6) for bonding and fixing the two side edges of the rubber water stop (7) is provided in the fixed grooves (17). The bottom surface of the end of the steel reinforcement cage (8) presses against the rubber water stop (7) above the bonding mortar layer (6). The two ends of the rubber water stop (7) are upturned and extend into the deformation joint of the side plate (2) of the square culvert. The outer walls on both sides of the rubber water stop (7) are supported at the side steel bars (3). Limiting binding steel bar frames are provided at the inner walls on both sides of the rubber water stop (7).

2. The waterproof structure of the deformation joint of an underground drainage rectangular culvert according to claim 1, characterized in that: An elastic waterproof sealant I (13) is filled in the deformation joint in the bottom plate (9) of the square culvert above the rubber water stop (7).

3. The waterproof structure of the deformation joint of an underground drainage square ditch according to claim 1, characterized in that: An elastic waterproof sealant II (14) is filled in the deformation joint in the side plates (2) of the square culvert on both sides of the rubber water stop (7).

4. The waterproof structure of the deformation joint of an underground drainage rectangular culvert according to claim 1, characterized in that: A plurality of support longitudinal bars (5) are provided along the vertical direction on the inner side of the side steel bars (3). The support longitudinal bars (5) are bound and fixed to the side steel bars (3). The outer side walls at both ends of the rubber water stop (7) are attached to the support longitudinal bars (5).

5. The waterproof structure for the deformation joint of the underground drainage rectangular culvert according to claim 1, characterized in that: The limiting binding steel bar frame includes four vertical steel bars (12) arranged in a square. Square stirrups (4) are bound and fixed on the outer sides of the vertical steel bars (12). The ends of the square stirrups (4) are fixed to the side steel bars (3).

6. The waterproof structure for deformation joints of an underground drainage rectangular culvert according to claim 1, characterized in that: An elastic waterproof sealant III (16) is filled in the deformation joint on the concrete base plate (1) below the rubber water stop (7).

7. A waterproof structure for deformation joints of an underground drainage rectangular culvert according to claim 1, characterized in that: Sealing grooves are provided at the tops of the side plates (2) of the square culvert on the front and rear sides of the deformation joint. A rubber protection strip (10) is provided in the sealing grooves. An elastic waterproof sealant IV (11) is provided at the top of the rubber protection strip (10). A sealing slot (15) for inserting the top of the rubber water stop (7) is provided at the bottom of the rubber protection strip (10).

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