Box culvert construction joint anti-seepage structure

Abstract

The utility model relates to the technical field of box culvert construction, in particular to a box culvert construction joint anti-seepage structure which comprises a box culvert and a sealing mechanism, a rectangular inserting groove is formed in one end of the box culvert, and a rectangular inserting frame is fixedly connected to the end, opposite to the rectangular inserting groove, of the box culvert; the design that the outer rubber sealing frame and the inner rubber sealing frame wrap the outer water-swelling water stopping frame and the inner water-swelling water stopping frame respectively is adopted, so that grout can be prevented from flowing out along a gap between a rectangular inserting groove and a rectangular inserting frame, and the outer water-swelling water stopping frame and the inner water-swelling water stopping frame are kept in the original state; the sealing slurry can be ensured to be solidified in a preset environment so as to ensure the quality of the box culvert after connection, and meanwhile, the water expansion water stop frame and the inner water swelling water stop frame can be ensured to expand only when water seepage occurs, so that the anti-seepage effect on the box culvert construction joint is improved.

Description

Technical Field

[0001] This utility model relates to the field of box culvert construction technology, and in particular to a seepage prevention structure for box culvert construction joints. Background Technology

[0002] Box culverts are culverts constructed using reinforced concrete box-shaped pipe sections. To meet hoisting requirements, the length of each box culvert section must be reduced, resulting in a large number of box culverts and numerous connection points, thus increasing the probability of leakage. Currently, many joints appear during construction. Due to weak splicing, the gaps at the joints are often too large. This not only affects the stability of the box culvert splicing but also easily leads to leakage due to the gaps.

[0003] A search of the Chinese patent "A Novel Anti-seepage Structure for Construction Joints of Box Culverts" (publication number CN216075239U) reveals that the patent features a sealing expansion strip at the open back of a rectangular convex frame. This sealing expansion strip engages with the rear part of a rectangular frame groove on another box culvert body. During grouting, the sealing expansion strip expands upon contact with water and fills the rectangular frame groove, thereby increasing the sealing performance of the rectangular frame groove.

[0004] As can be seen from the above reference case, the above device is provided with a water-absorbing sealing expansion strip at the joint between the rectangular convex frame and the rectangular frame groove. Since the sealing expansion strip can come into contact with the sealing grout, the water in the sealing grout flows into the sealing expansion strip quickly. This will cause the water on the surface of the sealing grout to be lost too quickly, resulting in drying shrinkage deformation when the sealing grout does not have sufficient strength. The surface is prone to through cracks, affecting the overall structure.

[0005] Therefore, a seepage prevention structure for box culvert construction joints is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a seepage prevention structure for box culvert construction joints in order to solve the above-mentioned problems, thereby improving the problem that existing box culvert construction joint seepage prevention structures are prone to mutual interference and it is difficult to guarantee the seepage prevention effect.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a seepage prevention structure for a box culvert construction joint, comprising: a box culvert and a sealing mechanism, wherein a rectangular slot is provided at one end of the box culvert, and a rectangular insert frame is fixedly connected to the end of the box culvert facing away from the rectangular slot.

[0008] Preferably, the sealing mechanism includes an outer rubber sealing frame, an inner rubber sealing frame, an outer water-swellable sealing frame, and an inner water-swellable sealing frame. The outer rubber sealing frame and the inner rubber sealing frame are both fixedly connected to one end of the box culvert facing away from the rectangular insertion frame. The outer rubber sealing frame and the inner rubber sealing frame are respectively located on the side of the rectangular slot facing away from the center point of the box culvert and the side of the rectangular slot facing the center point of the box culvert. The outer water-swellable sealing frame and the inner water-swellable sealing frame are both fixedly connected to one end of the box culvert facing away from the rectangular slot. The outer water-swellable sealing frame and the inner water-swellable sealing frame are respectively located on the side of the rectangular insertion frame facing away from the center point of the box culvert and the side of the rectangular insertion frame facing the center point of the box culvert.

[0009] Preferably, the box culvert has an outer positioning cavity and an inner positioning cavity at one end facing away from the rectangular insertion frame. The outer positioning cavity and the inner positioning cavity are respectively located on the side of the rectangular slot facing away from the center point of the box culvert and the side of the rectangular slot facing the center point of the box culvert. The ends of the outer rubber sealing frame and the inner rubber sealing frame facing the rectangular slot respectively penetrate into the interior of the outer positioning cavity and the inner positioning cavity.

[0010] Preferably, the cross-sectional shapes of the outer positioning cavity, the inner positioning cavity, the outer rubber sealing frame located in a part inside the outer positioning cavity, and the inner rubber sealing frame located in a part inside the inner positioning cavity are all matching arc shapes.

[0011] Preferably, both the outer rubber sealing frame and the inner rubber sealing frame have positioning grooves at their ends facing away from the rectangular slot, and the ends of the outer water-swellable sealing frame and the inner water-swellable sealing frame facing the rectangular slot are respectively engaged with the outer positioning groove and the inner positioning groove.

[0012] Preferably, the cross-sectional shape of the outer water-swellable sealing frame, the inner water-swellable sealing frame, and the positioning groove are all semi-circular. The outer water-swellable sealing frame and the outer positioning groove have the same dimensions, and the inner water-swellable sealing frame and the inner positioning groove have the same dimensions.

[0013] Preferably, the cross-sectional height ratio of the external water-swellable sealing frame, the internal water-swellable sealing frame, and the positioning groove is 2:2:1.

[0014] Preferably, both the outer rubber sealing frame and the inner rubber sealing frame are provided with square-shaped reinforcing ribs inside.

[0015] The beneficial effects of this utility model are:

[0016] 1. The design employs an outer rubber sealing frame and an inner rubber sealing frame to respectively wrap the outer water-swellable sealing frame and the inner water-swellable sealing frame. This design prevents the grout from flowing out along the gap between the rectangular slot and the rectangular insert frame, allowing the outer and inner water-swellable sealing frames to maintain their original shape. This not only ensures that the sealing grout can solidify under the preset environment to ensure the quality of the box culvert connection, but also ensures that the water-swellable sealing frames and the inner water-swellable sealing frames only expand when water seeps in, thereby improving the seepage prevention effect on the box culvert construction joint.

[0017] 2. The outer and inner rubber sealing frames are connected to the outer and inner water-swellable sealing frames respectively using mortise and tenon joints. This not only further improves the sealing effect of the box culvert construction joint, but also the outer and inner rubber sealing frames restrain each other with the outer and inner water-swellable sealing frames respectively, effectively reducing the probability of the outer or inner rubber sealing frames or the outer or inner water-swellable sealing frames loosening due to aging, thereby ensuring the sealing and seepage prevention effect of the box culvert construction joint. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the anti-seepage structure for the construction joint of the box culvert of this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of a partial structure in the anti-seepage structure for the construction joint of the box culvert of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0021] Figure 4 This is an exploded schematic diagram of the sealing mechanism in the anti-seepage structure of the box culvert construction joint of this utility model.

[0022] In the diagram: 100, box culvert; 110, rectangular slot; 120, outer positioning cavity; 130, inner positioning cavity; 200, rectangular insert frame; 300, sealing mechanism; 310, outer rubber sealing frame; 320, inner rubber sealing frame; 330, outer water-swellable sealing frame; 340, inner water-swellable sealing frame; 350, positioning groove; 360, square reinforcing rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In practical implementation: such as Figure 1-4 As shown, a seepage prevention structure for a box culvert construction joint includes: a box culvert 100 and a sealing mechanism 300. A rectangular slot 110 is provided at one end of the box culvert 100, and a rectangular insert frame 200 is fixedly connected to the end of the box culvert 100 facing away from the rectangular slot 110.

[0025] The top of the box culvert 100 is provided with a grouting hole that communicates with the rectangular slot 110. The inner sides of the box culvert 100 and the rectangular insert frame 200 are provided with interconnected insertion holes. A sealing plate is provided on the inner side of the box culvert 100. A positioning pin that is inserted into the insertion hole is fixedly connected to the end of the sealing plate facing the rectangular slot 110. A bolt that is threadedly connected to the box culvert 100 is inserted to the end of the sealing plate facing away from the rectangular slot 110. The top of the box culvert 100 is fixedly connected with evenly distributed lifting seats.

[0026] When it is necessary to connect two adjacent box culverts 100 together, the workers connect the crane and the lifting platform in the existing way, and then move the lifting platform along with the box culvert 100 towards the other box culvert 100 by operating the crane. Then, the rectangular insert frame 200 on the box culvert 100 is inserted into the rectangular slot 110 on the other box culvert 100. After the two box culverts 100 are in place, the workers fill the gap between the rectangular slot 110 and the rectangular insert frame 200 evenly through the grouting hole, and firmly lock the two box culverts 100 together.

[0027] like Figure 3 and Figure 4 As shown, the sealing mechanism 300 includes an outer rubber sealing frame 310, an inner rubber sealing frame 320, an outer water-swellable sealing frame 330, and an inner water-swellable sealing frame 340. The outer rubber sealing frame 310 and the inner rubber sealing frame 320 are both fixedly connected to one end of the box culvert 100 facing away from the rectangular insert frame 200. The outer rubber sealing frame 310 and the inner rubber sealing frame 320 are respectively located on the side of the rectangular slot 110 facing away from the center point of the box culvert 100 and the side of the rectangular slot 110 facing the center point of the box culvert 100. The outer water-swellable sealing frame 330 and the inner water-swellable sealing frame 340 are both fixedly connected to one end of the box culvert 100 facing away from the rectangular slot 110. The outer water-swellable sealing frame 330 and the inner water-swellable sealing frame 340 are respectively located on the side of the rectangular insert frame 200 facing away from the center point of the box culvert 100 and the side of the rectangular insert frame 200 facing the center point of the box culvert 100.

[0028] The box culvert 100 has an outer positioning cavity 120 and an inner positioning cavity 130 at one end facing away from the rectangular insertion frame 200. The outer positioning cavity 120 and the inner positioning cavity 130 are respectively located on the side of the rectangular slot 110 facing away from the center point of the box culvert 100 and the side of the rectangular slot 110 facing the center point of the box culvert 100. The ends of the outer rubber sealing frame 310 and the inner rubber sealing frame 320 facing the rectangular slot 110 respectively penetrate into the interior of the outer positioning cavity 120 and the inner positioning cavity 130. This can increase the tightness of the connection between the outer rubber sealing frame 310 and the inner rubber sealing frame 320 and the box culvert 100, so as to improve the seepage prevention treatment of the construction joint of the box culvert 100.

[0029] The outer positioning cavity 120, the inner positioning cavity 130, the outer rubber sealing frame 310 located in a part of the outer positioning cavity 120, and the inner rubber sealing frame 320 located in a part of the inner positioning cavity 130 all have matching arc-shaped cross-sections. This increases the difficulty of the outer rubber sealing frame 310 and the inner rubber sealing frame 320 becoming loose, thus achieving a good protective effect.

[0030] The outer rubber sealing frame 310 and the inner rubber sealing frame 320 are both provided with positioning grooves 350 at the ends facing away from the rectangular slot 110. The ends of the outer water-swellable sealing frame 330 and the inner water-swellable sealing frame 340 facing the rectangular slot 110 are respectively engaged with the outer positioning groove 350 and the inner positioning groove 350.

[0031] The cross-sectional shape of the external water-swellable sealing frame 330, the internal water-swellable sealing frame 340, and the positioning groove 350 are all semi-circular. The external water-swellable sealing frame 330 and the external positioning groove 350 have the same dimensions, and the internal water-swellable sealing frame 340 and the internal positioning groove 350 have the same dimensions. The ratio of the cross-sectional height of the external water-swellable sealing frame 330, the internal water-swellable sealing frame 340, and the positioning groove 350 is 2:2:1, which can reduce the gap of the 100mm construction joint of the box culvert and further reduce the risk of water seepage.

[0032] Both the outer rubber sealing frame 310 and the inner rubber sealing frame 320 are provided with square-shaped reinforcing ribs 360, which can enhance the deformation resistance of the outer rubber sealing frame 310 and the inner rubber sealing frame 320, thereby extending the service life of the outer rubber sealing frame 310 and the inner rubber sealing frame 320.

[0033] In use, during the docking of two box culverts 100, the outer rubber sealing frame 310 and the inner rubber sealing frame 320 approach the outer water-swellable sealing frame 330 and the inner water-swellable sealing frame 340, respectively. After the two box culverts 100 are docked, the outer rubber sealing frame 310 and the inner rubber sealing frame 320 engage with the corresponding positioning grooves 350. At this time, the outer rubber sealing frame 310 and the inner rubber sealing frame 320 wrap around the outer water-swellable sealing frame 330 and the inner water-swellable sealing frame 340 through the positioning grooves 350. The outer rubber sealing frame 310 and the inner rubber sealing frame 320 can prevent slurry from flowing out through the gap between the rectangular slot 110 and the rectangular insert frame 200. At the same time, when water vapor penetrates into the positioning groove 350, the corresponding outer water-swellable sealing frame 330 or inner water-swellable sealing frame 340 can also expand, sealing the gap between the two box culverts 100 more tightly.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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.

Claims

1. A box culvert construction joint anti-seepage structure, characterized in that, Include: Box culvert (100), one end of the box culvert (100) is provided with a rectangular slot (110), and one end of the box culvert (100) away from the rectangular slot (110) is fixedly connected with a rectangular insertion frame (200); Sealing mechanism (300), the sealing mechanism (300) includes outer rubber sealing frame (310), inner rubber sealing frame (320), outer water-swelling water stop frame (330) and inner water-swelling water stop frame (340), the outer rubber sealing frame (310) and inner rubber sealing frame (320) are all fixedly connected to one end of the box culvert (100) away from the rectangular insertion frame (200), the outer rubber sealing frame (310) and inner rubber sealing frame (320) are respectively arranged on one side of the rectangular slot (110) away from the center point of the box culvert (100) and one side of the rectangular slot (110) towards the center point of the box culvert (100), the outer water-swelling water stop frame (330) and the inner water-swelling water stop frame (340) are all fixedly connected to one end of the box culvert (100) away from the rectangular slot (110), the outer water-swelling water stop frame (330) and the inner water-swelling water stop frame (340) are respectively arranged on one side of the rectangular insertion frame (200) away from the center point of the box culvert (100) and one side of the rectangular insertion frame (200) towards the center point of the box culvert (100).

2. The anti-seepage structure for the construction joint of a box culvert according to claim 1, characterized in that: One end of the box culvert (100) away from the rectangular insertion frame (200) is provided with an outer positioning cavity (120) and an inner positioning cavity (130), the outer positioning cavity (120) and the inner positioning cavity (130) are respectively arranged on one side of the rectangular slot (110) away from the center point of the box culvert (100) and one side of the rectangular slot (110) towards the center point of the box culvert (100), one end of the outer rubber sealing frame (310) and the inner rubber sealing frame (320) towards the rectangular slot (110) respectively penetrates into the inside of the outer positioning cavity (120) and the inner positioning cavity (130).

3. The anti-seepage structure for the construction joint of a box culvert according to claim 2, characterized in that: The cross-sectional shape of the outer positioning cavity (120), the inner positioning cavity (130), the outer rubber sealing frame (310) arranged in the outer positioning cavity (120) and the inner rubber sealing frame (320) arranged in the inner positioning cavity (130) are all matching circular arcs.

4. The anti-seepage structure for the construction joint of a box culvert according to claim 3, characterized in that: One end of the outer rubber sealing frame (310) and the inner rubber sealing frame (320) away from the rectangular slot (110) is provided with a positioning groove (350), one end of the outer water-swelling water stop frame (330) and the inner water-swelling water stop frame (340) towards the rectangular slot (110) is respectively clamped with the outer positioning groove (350) and the inner positioning groove (350).

5. The anti-seepage structure for the construction joint of a box culvert according to claim 4, characterized in that: The cross-sectional shape of the outer water-swelling water stop frame (330), the inner water-swelling water stop frame (340) and the positioning groove (350) are all semicircular, the size of the outer water-swelling water stop frame (330) and the outer positioning groove (350) are all same, the size of the inner water-swelling water stop frame (340) and the inner positioning groove (350) are all same.

6. The anti-seepage structure for the construction joint of a box culvert according to claim 5, characterized in that: The cross-sectional height ratio of the outer water-swelling water stop frame (330), the inner water-swelling water stop frame (340) and the positioning groove (350) is two to two to one.

7. The anti-seepage structure for the construction joint of a box culvert according to claim 1, characterized in that: The outer rubber seal frame (310) and the inner rubber seal frame (320) are both internally provided with a square frame-shaped reinforcing rib (360).

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