Anti-seepage structure for highway underpass

Abstract

The utility model discloses a kind of for highway underpass anti-permeation structure, it is related to anti-permeation technical field. Including fabricated roadbed, installation groove is set in the middle part of free end fabricated roadbed;Anti-seismic edge beam, fixedly installed in the top of fabricated roadbed makes the expansion joint structure between two fabricated roadbeds, the opposite side of free end anti-seismic edge beam is all set with snap groove one;Upper anti-permeation component, is clamped in two snap groove one and forms water-blocking layer;Lower sealing device hinged in fabricated roadbed installation groove.The utility model is used for highway underpass anti-permeation structure by the triple linkage mechanism of '' hook mechanical locking+water pressure self-adapting lower swing+intelligent self-repairing'', from passive waterproof to active waterproof change is realized.Water pressure is greater, the adhesion of lower sealing device is stronger, and sealing effect is better.

Description

Technical Field

[0001] This utility model relates to the field of anti-seepage technology, specifically an anti-seepage structure for highway underpasses. Background Technology

[0002] As important transportation infrastructure, underpasses are often located below the groundwater level or subject to surface rainwater infiltration, making their waterproofing performance directly related to the structure's safety and durability. Expansion joints are necessary structures to accommodate structural temperature deformation and concrete shrinkage and creep, but they are also the weakest link in the waterproofing system.

[0003] Currently, common waterproofing measures for expansion joints mainly rely on single rubber waterstops or sealant caulking. These traditional methods have the following shortcomings: Passive sealing has poor adaptability: Rubber waterstops are prone to aging and cracking under long-term water pressure, or tearing due to uneven settlement, leading to seal failure. Sealants, on the other hand, are difficult to adapt to the dynamic deformation of expansion joints and easily detach from the interface.

[0004] Difficult to detect and repair after failure: Once a small leak occurs, moisture will continue to erode the interior of the structure, which is difficult to detect from the outside. By the time it is discovered, it has often caused serious damage, and repair requires road closures and construction, which is costly.

[0005] Lack of proactive response mechanisms: Existing technologies are mostly passive sealing technologies, which cannot dynamically adjust the sealing state according to water pressure or structural deformation, resulting in insufficient reliability.

[0006] Therefore, there is an urgent need to develop a new type of impermeable structure with active sealing capability and self-healing function to solve the above-mentioned technical problems. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a seepage-proof structure for highway underpasses that integrates mechanical linkage, water pressure self-adaptation, and intelligent self-repair functions, thereby significantly improving the long-term waterproof reliability of expansion joints.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A seepage-resistant structure for highway underpasses includes a prefabricated roadbed, wherein an installation groove is provided in the middle of the prefabricated roadbed, comprising: The seismic-resistant side beam is fixedly installed on the top of the prefabricated roadbed to form an expansion joint structure between the two prefabricated roadbeds. The opposite sides of the seismic-resistant side beam are provided with a slot. The upper waterproofing component is snapped into place in two slots to form a waterproof layer; A lower sealing device hinged within the prefabricated roadbed mounting groove; Among them, one end of the lower sealing device is a hook end, which is used to form a mechanical locking seal with the side wall of the prefabricated roadbed; The other end of the lower sealing device is a free end, which can be offset under the action of water gravity to fit the side wall of the mounting groove to achieve dynamic sealing. A sealing strip is snapped onto the mating surface of the free end. Multiple microcapsules are embedded inside the sealing strip. After the sealing strip is worn, the microcapsules release a liquid repair agent. The liquid repair agent solidifies into a plastic body upon contact with oxygen in the air, filling the gaps.

[0009] This utility model's anti-seepage structure for highway underpasses achieves a transformation from passive to active waterproofing through a triple linkage mechanism of "hook mechanical locking + water pressure adaptive swing + intelligent self-repair"; the greater the water pressure, the stronger the adhesion of the lower sealing device, and the better the sealing effect.

[0010] In addition to the seepage prevention of the upper seepage prevention components, a secondary sealing and waterproofing layer is added with a sealing strip. At the same time, the introduction of microcapsule technology enables the sealing strip to self-repair when minor damage occurs, preventing further leakage and greatly extending the service life of the waterproofing system.

[0011] Preferably, the upper waterproofing component is made of elastic rubber material and is fixedly installed inside the slot one by pre-tightening force.

[0012] Preferably, the upper seepage-proof component is V-shaped, with protrusions at both ends that are adapted to the slot. A compression strip is formed at the bottom of the protrusion. When the upper seepage-proof component is inserted into the slot, it abuts against the compression strip to form a frictional force to prevent detachment. The upper seepage-proof component adopts a snap-fit ​​method, which is convenient for installation.

[0013] Preferably, the middle part of the lower sealing device is a sealing plate, and the middle part of the sealing plate includes a hinge shaft. The hinge shaft is rotatably connected to a hinge shaft seat inside the prefabricated roadbed, and the sealing plate can be sealed by rotating the hinge shaft relative to the hinge shaft seat.

[0014] Preferably, the hook-shaped structure at the end of the hook has an angle of 30-60 degrees, which can form a mechanical lock with the embedded parts of the prefabricated roadbed sidewall. The hinge point of the lower sealing device is set at 1 / 3-1 / 2 of the length of the sealing plate from the end of the hook, to ensure effective offset under the action of water gravity.

[0015] Preferably, the free end of the lower sealing device maintains a predetermined gap with the side wall of the prefabricated roadbed in a waterless state, and shifts downward under the action of water gravity to fit tightly against the prefabricated roadbed. A sealing block that abuts against the free end is fixedly installed on the inner side wall of the prefabricated roadbed.

[0016] Preferably, the sealing strip is made of a high molecular polymer matrix, and the microcapsules are uniformly distributed inside the sealing strip.

[0017] Preferably, the wall material of the microcapsule is urea-formaldehyde resin, and the liquid repair agent encapsulated inside is one of polyurethane prepolymer and epoxy resin.

[0018] This utility model provides a seepage-resistant structure for highway underpasses. It has the following beneficial effects: This utility model's anti-seepage structure for highway underpasses utilizes a triple-linkage mechanism of "hook mechanical locking + water pressure adaptive swing + intelligent self-repair" to achieve a shift from passive to active waterproofing. The higher the water pressure, the stronger the adhesion of the lower sealing device, resulting in a better sealing effect.

[0019] In addition to the seepage prevention of the upper seepage prevention components, a secondary sealing and waterproofing layer is added with a sealing strip. At the same time, the introduction of microcapsule technology enables the sealing strip to self-repair when minor damage occurs, preventing further leakage and greatly extending the service life of the waterproofing system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the anti-seepage structure for highway underpasses described in this utility model; Figure 2 This is a schematic diagram of the structure of the earthquake-resistant side beam and the upper seepage-proof component of this utility model; Figure 3 This is a schematic diagram of the lower sealing device described in this utility model; Figure 4 This is a cross-sectional structural diagram of the sealing strip described in this utility model; Figure 5 This is a side view of the anti-seepage structure of the highway underpass described in this utility model.

[0021] In the diagram, 1 is the prefabricated roadbed; 11 is the mounting groove; 12 is the hinged shaft seat; and 13 is the sealing block. 2. Seismic-resistant edge beam; 21. Slot 1; 3. Upper-layer waterproofing components; 4. Lower sealing device; 41. Hook end; 42. Free end; 43. Sealing plate; 44. Hinge shaft; 5. Sealing strip; 51. Microcapsule. Detailed Implementation

[0022] 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. Example

[0023] like Figure 1-5 As shown, this utility model embodiment provides a seepage-resistant structure for highway underpasses, including a prefabricated roadbed 1. The prefabricated roadbed 1 has an installation groove 11 in its middle, comprising: The seismic-resistant side beam 2 is fixedly installed on the top of the prefabricated roadbed 1 to form an expansion joint structure between the two prefabricated roadbeds 1. The opposite sides of the seismic-resistant side beam 2 are provided with slots 21. The upper waterproof component 3 is snapped into two slots 21 to form a water-proof layer; The lower sealing device 4 is hinged in the mounting groove 11 of the prefabricated roadbed 1; Among them, one end of the lower sealing device 4 is a hook end 41, which is used to form a mechanical locking seal with the side wall of the prefabricated roadbed 1; The other end of the lower sealing device 4 is a free end 42. Under the action of water gravity, the free end 42 can be offset to fit the side wall of the mounting groove 11 to achieve dynamic sealing. In the absence of water, the free end 42 maintains a small gap with the side wall 11 due to its own weight or slight elastic pre-tightening force, allowing the structure to undergo normal expansion and contraction deformation. A sealing strip 5 is snapped onto the mating surface of the free end 42. Multiple microcapsules 51 are embedded inside the sealing strip 5. After the sealing strip 5 is worn, the microcapsules 51 release liquid repair agent. The liquid repair agent solidifies into a plastic body when it comes into contact with oxygen in the air, filling the gap.

[0024] Because the waterproofing structure for highway underpasses of this utility model has the above structure, it realizes a triple linkage mechanism of "hook mechanical locking + water pressure adaptive swing + intelligent self-repair", achieving a transformation from passive waterproofing to active waterproofing; the greater the water pressure, the stronger the adhesion of the lower sealing device, and the better the sealing effect.

[0025] Based on the seepage prevention of the upper seepage prevention component 3, a sealing strip 5 is added for secondary sealing and waterproofing. At the same time, the introduction of microcapsule 51 technology enables the sealing strip 5 to self-repair when minor damage occurs, preventing the further development of leakage and greatly extending the service life of the waterproof system.

[0026] Furthermore, in another embodiment, the upper waterproofing component 3 is made of elastic rubber material and is fixedly installed inside the slot 21 by pre-tightening force.

[0027] The upper seepage prevention component 3 is V-shaped, with protrusions at both ends that are adapted to the slot 21. A compression strip is formed at the bottom of the protrusions. When the upper seepage prevention component 3 is inserted into the slot 21, it abuts against the compression strip to form a frictional force to prevent detachment.

[0028] Because the anti-seepage structure for highway underpasses of this utility model has the above structure, it can form a preliminary anti-seepage layer on the top layer of the passage, allowing water to flow through the surface into the drainage channel, thus achieving the purpose of effective anti-seepage and drainage.

[0029] Furthermore, in another embodiment, the middle part of the lower sealing device 4 is a sealing plate 43, and the middle part of the sealing plate 43 includes a hinge shaft 44, which is rotatably connected to the hinge shaft seat 12 inside the prefabricated roadbed 1.

[0030] The hook end 41 has a hook-shaped structure with an angle of 30-60 degrees, which can form a mechanical lock with the embedded parts of the prefabricated roadbed 1 side wall. The hinge point of the lower sealing device 4 is set at a distance from the hook end 41 and 1 / 3-1 / 2 of the length of the sealing plate 43 to ensure effective offset under the action of water gravity. The side wall of the embedded parts of the prefabricated roadbed 1 side wall is wrapped with a sealing sleeve, and the hook end 41 abuts against the sealing sleeve to form a seal.

[0031] The free end 42 of the lower sealing device 4 maintains a predetermined gap with the side wall of the prefabricated roadbed 1 in a waterless state. Under the action of gravity of water, it shifts downward and fits tightly with the prefabricated roadbed 1. A sealing block 13 that abuts against the free end 42 is fixedly installed on the inner side wall of the prefabricated roadbed 1. The opposite sides of the free end 42 and the sealing block 13 are both inclined surfaces. When the free end 42 abuts against the sealing block 13, the sealing block 13 can be deformed, further forming a sealed and seepage-proof state.

[0032] Because the anti-seepage structure for highway underpasses of this utility model has the above structure, when the water pressure is too high or the upper anti-seepage component 3 fails, water flows into the sealing plate 43. Under the action of gravity, the sealing plate 43 rotates clockwise, so that the free end 42 presses against the sealing block 13 and compresses the sealing strip 5, thereby achieving further sealing and waterproofing. The greater the water pressure, the greater the pressure will be provided to the sealing plate 43, resulting in a better sealing effect.

[0033] Furthermore, in another embodiment, the sealing strip 5 is made of a polymer matrix, and microcapsules 51 are uniformly distributed inside the sealing strip 5. The shell material of the microcapsules 51 is urea-formaldehyde resin, and the liquid repair agent encapsulated inside is one of polyurethane prepolymer and epoxy resin.

[0034] Because the waterproof structure for highway underpasses of this utility model has the above structure, the sealing strip 5 deforms under the extrusion pressure to achieve secondary waterproof sealing. When the sealing strip 5 is damaged after long-term use, the microcapsule 51 is damaged by pressure and releases liquid repair agent, which reacts with the outside air to solidify into a plastic body, fills the gaps, and further forms a sealing state to ensure effective water seepage prevention.

[0035] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0036] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A seepage-resistant structure for highway underpasses, comprising a prefabricated roadbed (1), wherein an installation groove (11) is provided in the middle of the prefabricated roadbed (1), characterized in that: include: The seismic-resistant side beam (2) is fixedly installed on the top of the prefabricated roadbed (1) to form an expansion joint structure between the two prefabricated roadbeds (1). The opposite sides of the seismic-resistant side beam (2) are provided with a slot (21). The upper seepage prevention component (3) is snapped into two slots (21) to form a water-proof layer; The lower sealing device (4) is hinged in the mounting groove (11) of the prefabricated roadbed (1); Among them, one end of the lower sealing device (4) is a hook end (41), which is used to form a mechanical locking seal with the side wall of the prefabricated roadbed (1); The other end of the lower sealing device (4) is a free end (42), which can be offset under the action of water gravity to fit the side wall of the mounting groove (11) to achieve dynamic sealing; A sealing strip (5) is snapped onto the mating surface of the free end (42). Multiple microcapsules (51) are embedded inside the sealing strip (5). After the sealing strip (5) is worn, the microcapsules (51) release liquid repair agent. The liquid repair agent solidifies into a plastic body when it encounters oxygen in the air.

2. The seepage-resistant structure for highway underpasses according to claim 1, characterized in that: The upper seepage prevention component (3) is made of elastic rubber material and is fixedly installed inside the slot (21) by pre-tightening force.

3. The seepage-resistant structure for highway underpasses according to claim 2, characterized in that: The upper seepage prevention component (3) is V-shaped in general, and has protrusions at both ends that are adapted to the slot one (21). The bottom of the protrusion forms a compression strip. When the upper seepage prevention component (3) is inserted into the slot one (21), it abuts against the compression strip to form a frictional force to prevent detachment.

4. The seepage-resistant structure for highway underpasses according to claim 1, characterized in that: The middle part of the lower sealing device (4) is a sealing plate (43), and the middle part of the sealing plate (43) includes a hinge shaft (44), which is rotatably connected to the hinge shaft seat (12) inside the prefabricated roadbed (1).

5. The seepage-resistant structure for highway underpasses according to claim 4, characterized in that: The hook-shaped structure of the hook end (41) has an angle of 30-60 degrees, which can form a mechanical lock with the embedded parts of the side wall of the prefabricated roadbed (1).

6. The seepage-resistant structure for highway underpasses according to claim 1, characterized in that: The free end (42) of the lower sealing device (4) maintains a predetermined gap with the side wall of the prefabricated roadbed (1) in a waterless state. Under the action of water gravity, it shifts downward and fits tightly with the prefabricated roadbed (1). The inner side wall of the prefabricated roadbed (1) is fixedly installed with a sealing block (13) that abuts against the free end (42).

7. The seepage-resistant structure for highway underpasses according to claim 1, characterized in that: The sealing strip (5) is made of a polymer matrix, and the microcapsules (51) are evenly distributed inside the sealing strip (5).

8. The seepage-resistant structure for highway underpasses according to claim 1, characterized in that: The wall material of the microcapsule (51) is urea-formaldehyde resin, and the liquid repair agent encapsulated inside is one of polyurethane prepolymer and epoxy resin.

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