Anti-seepage structure for connecting steel plate and concrete
By using a seepage-proof structure with closed-cell foam boards and self-locking anchoring components at the connection between the aqueduct and the channel, the leakage problem was solved, achieving a seepage-proof effect at the connection between the steel plate and the concrete, adapting to temperature changes and settlement, and avoiding large-scale reconstruction.
Patent Information
- Application Number
- CN202520634876.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-07
AI Technical Summary
At the connection between the aqueduct inlet/outlet and the canal lining concrete, the existing sealing method cannot adapt to temperature changes or uneven settlement, resulting in leakage problems and affecting water conveyance efficiency.
The method involves filling the junction of the channel and the aqueduct with closed-cell foam board and installing self-locking anchoring components within the steel plate, including double-layer steel plates and sandwiched geomembrane, to form self-locking anchoring components to prevent leakage. This is combined with polyurethane sealant and pre-deformation allowance to improve sealing performance.
It effectively prevents leakage, avoids large-scale demolition and reconstruction, improves the seepage prevention performance of the connection between steel plate and concrete, adapts to temperature changes and settlement, extends the laying length of steel plate, and enhances connection stability.
Smart Images
Figure CN224001882U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water conservancy and hydropower engineering, and specifically relates to a seepage-proof structure for connecting steel plates and concrete. Background Technology
[0002] With the advancement of irrigation district renovation and water-saving upgrade projects, various water diversion and conveyance structures are involved in the modification. Different building materials are typically used during these modifications. Currently, the modification of aqueducts, without damaging the original structure, is being carried out in a manner that... Figure 1 As shown, a complete seepage prevention system is often formed by welding steel plates. However, the connection between the aqueduct inlet and outlet and the canal lining concrete is made of two different materials, and the sealing between the two materials is often neglected. Existing methods such as sealant are often used to treat expansion joints, but they cannot adapt to temperature changes or uneven settlement. After water is introduced, concentrated leakage points or even leakage channels are easily formed, affecting water conveyance efficiency. Utility Model Content
[0003] The purpose of this utility model is to provide a seepage-proof structure for the connection between steel plates and concrete, so as to overcome the above-mentioned technical defects.
[0004] To solve the above-mentioned technical problems, this utility model provides a seepage-proof structure for the connection between steel plates and concrete, suitable for the junction of channels and aqueducts, wherein a closed-cell foam board is filled directly below the junction, comprising at least:
[0005] A steel plate is laid at the junction of the channel and the aqueduct. The steel plate is provided with a self-locking anchoring member to prevent liquid leakage through the junction. The first end of the steel plate extends along the bottom plate of the channel, and the second end of the steel plate extends along the bottom plate of the aqueduct.
[0006] According to a waterproof structure for connecting a steel plate to concrete, the steel plate comprises:
[0007] The first steel plate has its lower surface in perpendicular contact with the closed-cell foam board.
[0008] The second steel plate covers the upper surface of the first steel plate. The first steel plate and the second steel plate are parallel to each other, and the first ends of the two steel plates are flush. The second end of the first steel plate is welded to the lower surface of the second steel plate.
[0009] According to a seepage-proof structure for connecting steel plates to concrete, the self-locking anchoring component includes:
[0010] The impermeable substrate has a first end laid inside the concrete of the channel, and a second end laid between the first steel plate and the second steel plate.
[0011] The membrane between the first and second ends of the impermeable substrate is zigzag-shaped to form a self-locking structure.
[0012] According to a seepage-proof structure for connecting steel plates and concrete, the membrane of the seepage-proof substrate is pre-deformed at the joint between the first ends of the two steel plates and the concrete of the channel;
[0013] The junction between the reserved deformation and the second steel plate is filled with polyurethane sealant.
[0014] According to a seepage-proof structure for connecting steel plates and concrete, the reserved deformation is wavy.
[0015] According to a seepage-proof structure for connecting steel plates and concrete, the first end of the seepage-proof substrate is laid horizontally inside the concrete of the channel and fixed inside the concrete of the channel by a plurality of pressure strips.
[0016] According to a seepage-proof structure for connecting steel plates and concrete, the membrane of the seepage-proof substrate between the pressure strip and the reserved deformation is zigzag-shaped.
[0017] According to a seepage-proof structure for connecting steel plates and concrete, the zigzag shape is a V-shape with the opening facing the closed-cell foam board;
[0018] Alternatively, the broken line shape may be an inclined plane;
[0019] The inclined plane forms an acute angle with the horizontal plane where the first end of the waterproof substrate is located.
[0020] According to a seepage-proof structure for connecting steel plates and concrete, the steel plates overlap with the concrete of the channel, with an overlap length of 30-50cm.
[0021] According to a waterproof structure for connecting steel plates and concrete, the waterproof substrate located in the interlayer between two steel plates is anchored to the two steel plates by anchor bolts.
[0022] This utility model provides a seepage-proof structure for connecting steel plates and concrete, applied to the bottom slab connection of channels and aqueducts. This seepage-proof structure extends the original steel plate laying length and transforms the original steel plates into double-layered steel plates arranged parallel to each other. A geomembrane is sandwiched between the double-layered steel plates. The portion of the geomembrane extending beyond the double-layered steel plates forms a self-locking anchoring component within the channel concrete, preventing buoyancy forces from damaging the concrete blocks and thus destroying the geomembrane seepage-proof structure. This solves the leakage problem at the connection between the channel and the aqueduct while avoiding large-scale demolition and reconstruction of the lining materials on both sides.
[0023] To make the above-mentioned contents of this utility model more obvious and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of an existing seepage prevention system in the background art.
[0025] Figure 2 This is a cross-sectional view of a seepage-proof structure used for connecting steel plates and concrete.
[0026] Figure 3 This is a schematic diagram of the first embodiment of the seepage prevention structure.
[0027] Figure 4 This is a schematic diagram of the second embodiment of the seepage prevention structure.
[0028] Explanation of reference numerals in the attached figures:
[0029] 10. Distribution channels; 11. Distribution channel infrastructure;
[0030] 20. Aqueduct; 21. Aqueduct bottom plate;
[0031] 30. Closed-cell foam board;
[0032] 41. Steel plate; 411. First steel plate; 412. Second steel plate; 42. Waterproof substrate; 421. Reserved for deformation; 422. V-shape; 423. Sloping surface; 43. Pressure strip; 44. Anchor nail; 45. Polyurethane sealant. Detailed Implementation
[0033] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0034] It should be noted that, in this utility model, the upper, lower, left, and right in the figure are regarded as the upper, lower, left, and right of the anti-seepage structure for connecting steel plates and concrete as described in this specification.
[0035] Exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the present invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments shown in the drawings is not intended to limit the present invention. In the drawings, the same units / elements are referred to by the same reference numerals.
[0036] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.
[0037] This embodiment relates to a seepage-proof structure for connecting steel plates and concrete, suitable for the junction of channel 10 and aqueduct 20, wherein a closed-cell foam board 30 is filled directly below the junction. Please refer to [link to relevant documentation]. Figure 2 The seepage prevention structure includes at least 41 steel plates.
[0038] Channel 10 mentioned above refers to the transportation channel.
[0039] Specifically, because two different materials are used at the junction of channel 10 and aqueduct 20 (i.e., the expansion joint, where the closed-cell foam board 30 is located), the sealing performance of the two materials is poor. After water is introduced, concentrated leakage points easily form at the expansion joint, and water leakage may even occur from the source. Figure 1 The bottom surface of the steel plate 41 in the middle seeps in and forms a leakage channel. In order to solve this problem, this embodiment proposes an anti-seepage structure for the connection between the steel plate and the concrete. In this embodiment, the anti-seepage structure is applied at the junction of the channel bottom plate 11 and the aqueduct bottom plate 21.
[0040] Please continue reading. Figure 2 Steel plate 41 is laid at the junction of channel 10 and aqueduct 20. Self-locking anchoring components are provided inside steel plate 41 to prevent liquid leakage through the junction. The first end of steel plate 41 extends along channel bottom plate 11, and the second end of steel plate 41 extends along aqueduct bottom plate 21.
[0041] Compared to traditional steel plate laying methods, such as Figure 1 As shown, this embodiment makes two improvements to the steel plate 41. The first is to extend the laying length of the steel plate 41, so as to... Figure 2 Taking the direction shown as an example, the first end (i.e., the left end) and the second end (i.e., the right end) of the steel plate 41 are extended respectively, so that the laying of the steel plate 41 crosses the expansion joint; the second is to set a self-locking anchoring component in the steel plate 41 to prevent the seepage prevention structure from moving.
[0042] It should be noted that the first end mentioned above and below can be considered as the left end of the closed-cell foam board 30, and the second end can be considered as the right end of the closed-cell foam board 30.
[0043] In some embodiments, the steel plate 41 is laid across the expansion joint and overlaps with the concrete of the channel 10 (e.g., overlap of 30-50cm), while the top surface elevation is consistent with that of the channel 10.
[0044] In some embodiments, the concrete of channel 10 is excavated before the expansion joint (e.g., 30-50 cm away) to form a shape like... Figure 2 The rectangle shown has a recessed right side forming a zigzag membrane, which makes the concrete at that location also present a corresponding zigzag shape, so that the secondary concrete can fix the anti-seepage substrate 42 and thus form a self-locking anchoring component.
[0045] Please see Figure 3 or Figure 4 The steel plate 41 includes a first steel plate 411 and a second steel plate 412.
[0046] The lower surface of the first steel plate 411 is in vertical contact with the closed-cell foam board 30. Here, vertical contact means that the first steel plate 411 and the closed-cell foam board 30 are placed perpendicular to each other, and the lower surface of the first steel plate 411 is in contact with the upper surface of the closed-cell foam board 30.
[0047] The second steel plate 412 covers the upper surface of the first steel plate 411. The first steel plate 411 and the second steel plate 412 are parallel to each other, and the first ends of the two steel plates are flush. The second end of the first steel plate 411 is welded to the lower surface of the second steel plate 412.
[0048] Specifically, the length of the first steel plate 411 is shorter than the length of the second steel plate 412. This is because the first steel plate 411 is only for wrapping the waterproof substrate 42, so the first steel plate 411 does not need to be extended after reaching the waterproof length.
[0049] Please continue reading. Figure 3 or Figure 4 The self-locking anchoring component includes a seepage-proof substrate. In this embodiment, a geomembrane is selected as the seepage-proof substrate, but other seepage-proof substrates, such as PE film, PVC film, rubber rolls and other synthetic polymer materials, can also be used. The first end of the seepage-proof substrate 42 is laid in the concrete of the channel 10, and the second end of the seepage-proof substrate 42 is laid between the first steel plate 411 and the second steel plate 412. The membrane between the first end and the second end of the seepage-proof substrate 42 is in a zigzag shape to form a self-locking mechanism.
[0050] When laying the impermeable substrate 42, a groove can be excavated in the concrete of the channel 10 first, and then the first end of the impermeable substrate 42 can be laid in the groove. The second end of the impermeable substrate 42 can be laid in the sandwich between the two steel plates. Note that the second end of the impermeable substrate 42 should be as close as possible to the weld seam of the second end of the first steel plate 411.
[0051] The membrane between the first and second ends of the impermeable substrate 42 is zigzag-shaped to form a self-locking mechanism. The purpose of this mechanism is to prevent the buoyancy force from damaging the concrete block. That is, when the concrete is subjected to the upward buoyancy force of the water, the zigzag-shaped concrete block can generate frictional force with the surrounding concrete to interlock automatically, thus avoiding movement, misalignment, and other factors that could cause impermeability failure.
[0052] Specifically, the membrane of the impermeable substrate 42 between the pressure strip 43 and the reserved deformation 421 is zigzag-shaped.
[0053] In some embodiments, such as Figure 3 As shown, the broken line shape is a V-shape 422 with the opening facing the closed-cell foam board 30.
[0054] In some embodiments, such as Figure 4 As shown, the broken line shape is the inclined plane 423. The inclined plane 423 forms an acute angle with the horizontal plane where the first end of the waterproof substrate 42 is located. That is, the inclined plane 423 and the groove form a right trapezoidal cross-sectional shape.
[0055] The waterproof substrate 42, located in the interlayer between the two steel plates, is anchored to the two steel plates by anchor bolts 44.
[0056] The first end of the impermeable substrate 42 is laid horizontally within the concrete of the channel 10 and fixed within the concrete of the channel 10 by multiple pressure strips 43. Specifically, the impermeable substrate 42 is laid from the bottom of the rectangular concrete channel channel and fixed by two rows of pressure strips 43 and bolts. Deformation is reserved at the joint between the steel plate 41 and the channel concrete, and the substrate continues to be laid sandwiched between two layers of steel plates, with an overlap of 50-100cm. The impermeable substrate 42 is fixed to the steel plate 41 by anchor nails 44, and the ends of the two layers of steel plates are welded together.
[0057] To enhance the tensile strength of the impermeable substrate 42, a pre-deformation 421 is provided in the membrane of the impermeable substrate 42 at the first end of the two steel plates and the joint of the concrete in the channel 10. In some embodiments, the pre-deformation 421 is wavy.
[0058] The joint between the pre-deformed section 421 and the second steel plate 412 is filled with polyurethane sealant 45 to improve the sealing force.
[0059] This utility model provides a seepage-proof structure for connecting steel plates and concrete, applied to the bottom slab connection of channels and aqueducts. This seepage-proof structure extends the original steel plate laying length and transforms the original steel plates into double-layered steel plates arranged parallel to each other. A geomembrane is sandwiched between the double-layered steel plates. The portion of the geomembrane extending beyond the double-layered steel plates forms a self-locking anchoring component within the channel concrete, preventing buoyancy forces from damaging the concrete blocks and thus destroying the geomembrane seepage-proof structure. This solves the leakage problem at the connection between the channel and the aqueduct while avoiding large-scale demolition and reconstruction of the lining materials on both sides.
[0060] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.
Claims
1. A structure for preventing seepage for connecting a steel plate and concrete, which is adapted to a joint of a channel (10) and a flume (20), and a closed cell foam board (30) is filled right below the joint, characterized in that, At least comprising: a steel plate (41) laid at the joint of the channel (10) and the aqueduct (20), the steel plate (41) internally provided with a self-locking anchoring component to prevent liquid from leaking through the joint, and the first end of the steel plate (41) extending along the channel floor (11), and the second end of the steel plate (41) extending along the aqueduct floor (21).
2. The anti-seepage structure for connecting a steel plate with concrete according to claim 1, characterized in that, The steel plate (41) comprises: a first steel plate (411) with its lower plate surface vertically contacting the closed-cell foam plate (30); a second steel plate (412) covering the upper plate surface of the first steel plate (411), the first steel plate (411) and the second steel plate (412) being parallel to each other, and the first ends of the two steel plates being flush, and the second end of the first steel plate (411) being welded to the lower plate surface of the second steel plate (412).
3. The anti-infiltration structure for the connection of a steel plate and concrete according to claim 2, characterized by, The self-locking anchoring component comprises: a seepage-proof base material (42), the first end of the seepage-proof base material (42) being laid in the concrete of the channel (10), and the second end of the seepage-proof base material (42) being laid between the first steel plate (411) and the second steel plate (412); the membrane body between the first end and the second end of the seepage-proof base material (42) being in a zigzag shape to form a self-locking.
4. The anti-infiltration structure for connecting a steel plate with concrete according to claim 3, characterized by, At the joint of the first ends of the two steel plates and the concrete of the channel (10), the membrane body of the seepage-proof base material (42) is provided with a reserved deformation (421); the reserved deformation (421) being filled with polyurethane sealant (45) at the joint with the second steel plate (412).
5. The anti-infiltration structure for connecting a steel plate with concrete according to claim 4, characterized by, The reserved deformation (421) is in a wave shape.
6. The anti-infiltration structure for the connection of a steel plate with concrete according to claim 4 or 5, characterized in that, The first end of the seepage-proof base material (42) is laid horizontally in the concrete of the channel (10), and is fixed in the concrete of the channel (10) by a plurality of pressing strips (43).
7. The anti-infiltration structure for the connection of a steel plate and concrete according to claim 6, characterized by, The membrane body of the seepage-proof base material (42) between the pressing strips (43) and the reserved deformation (421) is in a zigzag shape.
8. The anti-infiltration structure for the connection of a steel plate and concrete according to claim 7, characterized by, The zigzag shape is a V-shaped (422) with an opening facing the closed-cell foam plate (30); or, the zigzag shape is a slope (423); the slope (423) forms an acute angle with the horizontal plane where the first end of the seepage-proof base material (42) is located.
9. The anti-infiltration structure for connecting a steel plate with concrete according to claim 7, characterized by, The steel plate (41) forms an overlap with the concrete of the channel (10), and the overlap length is 30-50 cm.
10. The anti-infiltration structure for connecting a steel plate with concrete according to claim 7, characterized by, The seepage-proof base material (42) in the interlayer of the two steel plates is anchored in the two steel plates by anchor nails (44).