Box culvert joint processing device

Abstract

The utility model provides a box culvert joint seam processing apparatus, including former box culvert and rear box culvert: the tail of former box culvert and the head of rear box culvert are connected and form the butt joint seam, and the first end to tail joint place is coated with sealant, steel sheet is located the bottom of former box culvert and rear box culvert, the steel sheet is installed on former box culvert and rear box culvert through bolt, the rear part of former box culvert is provided with rear box culvert, and the former box culvert and rear box culvert between coating have sealant, the outside of butt joint seam is provided with steel outer cover, and the inner wall place of steel outer cover near butt joint seam is provided with steel waterstop, the utility model discloses a box culvert joint seam adopts inside and outside double -deck rubber waterstop, and through extruding seal and water expansion double mechanism adaptation deformation and plugging seepage path, the joint outside grouting solidifies soil body, forms the peripheral waterproof barrier, and blocks the groundwater invasion channel. The inside adds rubber belt waterstop, realizes the three -dimensional protection of " outer plugging inside prevention".

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering, specifically a box culvert joint treatment device. Background Technology

[0002] In infrastructure construction fields such as municipal engineering, water conservancy engineering, and transportation engineering, box culverts are widely used as an important underground structural form for drainage, water conveyance, pipeline crossings, pedestrian passages, and vehicle access. Box culverts are typically constructed by splicing multiple precast or cast-in-place reinforced concrete box sections. The integrity and sealing of their structure directly affect the safe operation and service life of the project. Because box culverts are constantly exposed to a damp underground environment, waterproofing measures are necessary. Existing box culvert joint methods include the following: Joint filling method: This method involves filling the joints with flexible caulking materials such as rubber strips, sealant, or asphalt-impregnated hemp fibers. The elastic deformation of the material adapts to joint displacement and blocks water penetration. However, this method requires high-performance caulking materials and is prone to seal failure due to material aging and excessive joint deformation during long-term use. Rigid waterproofing method: The joints are sealed with rigid materials such as concrete or mortar to form a rigid waterproofing structure. However, rigid materials themselves have poor resistance to deformation and are prone to cracking when the joints undergo slight displacement, making it difficult to adapt to the dynamic deformation requirements of box culverts; Waterstop sealing method: Waterstop components such as rubber waterstops and steel-edged waterstops are pre-embedded at the joints to achieve waterproofing by utilizing the elasticity and sealing properties of the waterstops. However, the installation quality of the waterstops requires strict construction techniques. If there are problems such as installation deviations, insecure fixing, or damage to the waterstops themselves, leakage is very likely to occur, and subsequent repairs and replacements are difficult. Grouting sealing method: When leakage occurs at the joint, cement grout, chemical grout, or other materials are injected into or around the joint to fill the gap and form a water-stopping curtain. This method is mostly used as a remedial measure after leakage, and it is difficult to fundamentally solve the dynamic sealing problem of the joint. Moreover, the grouting effect is greatly affected by factors such as grouting pressure, grout ratio, and construction operation, and there is a risk of secondary leakage. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a box culvert joint treatment device to solve the problems of secondary leakage, difficulty in later maintenance and replacement, easy cracking when the joint undergoes slight displacement, and difficulty in adapting to the dynamic deformation of the box culvert in the existing technology.

[0004] A box culvert joint treatment device includes a front box culvert and a rear box culvert: The tail of the front box culvert and the head of the rear box culvert are joined end to end to form a butt joint, and the joint is coated with sealant. Steel plates are located at the bottom of the front and rear box culverts, and the steel plates are bolted to the front and rear box culverts. A rear box culvert is provided at the rear of the front box culvert, and sealant is applied between the front box culvert and the rear box culvert; A steel outer cover is provided on the outside of the joint, and a steel waterstop is provided on the inner wall of the steel outer cover near the joint.

[0005] Preferably, the front box is provided with an embedded reserved groove in the joint, and the reserved groove is coated with resin adhesive.

[0006] Preferably, the reserved groove is fitted with water-swellable rubber and neoprene rubber.

[0007] Preferably, the joints of the water-swellable rubber and the neoprene rubber should be staggered by more than 50cm, and the pre-embedded steel plate anchor bars should be arranged at a spacing of 0.5m.

[0008] Preferably, the steel waterstop is welded to the steel plate.

[0009] Compared with the prior art, the present invention has the following beneficial effects: This utility model employs double-layered rubber waterstops at the joints of box culverts. These waterstops utilize a dual mechanism of compression sealing and water-swelling to adapt to deformation and block seepage paths. Grouting is injected onto the outer side of the joint to solidify the soil, forming an external waterproof barrier and blocking groundwater intrusion. An additional rubber waterstop on the inner side achieves a three-dimensional protection system of "external blocking and internal defense." Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the joint structure of this utility model; Figure 2 This is a schematic diagram of the pre-reserved groove structure of the rubber waterstop of this utility model.

[0011] In the diagram: 1. Front box culvert; 2. Rear box culvert; 3. Sealant; 4. Steel plate; 5. Bolt; 6. Steel outer cover; 7. Steel waterstop; 8. Water-swellable rubber; 9. Neoprene rubber. Detailed Implementation

[0012] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0013] like Figure 1-2 The illustrated box culvert joint treatment device includes a front box culvert 1 and a rear box culvert 2: The tail of the front box culvert 1 and the head of the rear box culvert 2 are connected end to end to form a joint, and the joint is coated with sealant 3. The front box culvert 1 has an embedded reserved groove at the joint, and the reserved groove is coated with resin glue. Preferably, the reserved groove is inlaid with water-swellable rubber 8 and neoprene rubber 9; The joints of water-swellable rubber and neoprene rubber should be staggered by more than 50cm, and the pre-embedded steel plate anchor bars should be laid at a spacing of 0.5m. Steel plate 4 is located at the bottom of the front box culvert 1 and the rear box culvert 2. Steel plate 4 is installed on the front box culvert 1 and the rear box culvert 2 by bolts 5. A rear box culvert 2 is provided at the rear of the front box culvert 1, and sealant 3 is applied between the front box culvert 1 and the rear box culvert 2; A steel outer cover 6 is installed on the outside of the joint, and a steel waterstop 7 is installed on the inner wall of the steel outer cover 6 near the joint. Furthermore, the steel waterstop 7 is welded to the steel plate 4.

[0014] The joint treatment of the box culvert includes the following steps: Step 1: During the construction of the front box culvert 1, water-swellable rubber 8 and neoprene rubber 9 are pre-embedded in the wall. Before the front box culvert 1 and the rear box culvert 2 are closed, a layer of resin adhesive is applied to the reserved groove, the steel waterstop 7 is attached to the front box culvert 1, and then the rear box culvert 2 is tightened and closed.

[0015] Step 2: Before closing the front box culvert 1 and the rear box culvert 2, apply HJL two-component polysulfide sealant 3 to both sides of the closing interface, applying it multiple times to ensure that the thickness on both sides is not less than 1.5cm, and then push them together. When closing, push them as tightly as possible to ensure that the steel waterstop 7 and sealant 3 between the front box culvert 1 and the rear box culvert 2 are in close contact under pressure.

[0016] Step 3: The joints of water-swellable rubber 8 and neoprene rubber 9 should be staggered by more than 50cm, and the pre-embedded steel plate anchor bars should be laid with a spacing of 0.5m.

[0017] Step 4: After the steel waterstop 7 is pushed into place and settled stably in the rear box culvert 2, weld the steel waterstop 7. During welding, take measures to prevent the concrete under the embedded plate from cracking and ensure the welding quality of the embedded plate before the box culvert joint treatment can be carried out.

[0018] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A box culvert joint treatment device, characterized in that, Including the front box culvert (1) and the rear box culvert (2): The tail of the front box culvert (1) and the head of the rear box culvert (2) are connected end to end to form a butt joint, and the joint is coated with sealant (3). Steel plate (4) is located at the bottom of the front box culvert (1) and the rear box culvert (2), and the steel plate (4) is installed on the front box culvert (1) and the rear box culvert (2) by bolts (5); A rear box culvert (2) is provided at the rear of the front box culvert (1), and a sealant (3) is applied between the front box culvert (1) and the rear box culvert (2). A steel outer cover (6) is provided on the outside of the joint, and a steel waterstop (7) is provided on the inner wall of the steel outer cover (6) near the joint.

2. The box culvert joint treatment device as described in claim 1, characterized in that: The front box culvert (1) has an embedded reserved groove at the joint, and the reserved groove is coated with resin glue.

3. The box culvert joint treatment device as described in claim 1, characterized in that: The reserved groove is inlaid with water-swellable rubber (8) and chloroprene rubber (9).

4. The box culvert joint treatment device as described in claim 3, characterized in that: The joints of the water-swellable rubber and neoprene rubber should be staggered by more than 50cm, and the pre-embedded steel plate anchor bars should be arranged at a spacing of 0.5m.

5. The box culvert joint treatment device as described in claim 1, characterized in that: The steel waterstop (7) is welded to the steel plate (4) by welding.

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