Narrow fat groove assembly type subway station waterproof structure

Abstract

The invention discloses a narrow fat groove assembly type subway station waterproof structure, and belongs to the technical field of subway station waterproofing, the narrow fat groove assembly type subway station waterproof structure comprises a waterproof bottom plate arranged between narrow fat grooves, first grooves are formed in the two sides of the top surface of the waterproof bottom plate, bottom corner connecting pieces are arranged in the first grooves, and waterproof side plates are fixedly connected to the top surfaces of the bottom corner connecting pieces through bottom corner connecting mechanisms; a waterproof top plate is fixedly connected between the tops of the two waterproof side plates, a supporting plate is fixedly connected between the two waterproof side plates, supporting columns are symmetrically and fixedly connected to the top face and the bottom face of the supporting plate respectively, and a waterproof mechanism is arranged between the waterproof bottom plate and the bottom corner connecting piece. Rapid assembly is achieved through the modular prefabricated parts, and the structure building problem under narrow fertilizer groove space limitation is solved; a first anti-leakage barrier is formed through the synergistic effect of the bottom corner connecting pieces and the waterproof mechanisms.

Description

Technical Field

[0001] This invention belongs to the field of waterproofing technology for subway stations, and particularly relates to a narrow-groove prefabricated waterproofing structure for subway stations. Background Technology

[0002] A subway station consists of a platform level, a concourse level, an equipment level, and entrances / exits. Construction methods for subway stations include open-cut, cut-and-cover, shallow-buried tunneling, and drill-and-blast methods. For open-cut construction, the excavation depth is approximately 10-24 meters. The foundation pit excavation employs two- and three-level slope excavation, with soil nailing and shotcrete support. The underground structure is a two-story structure constructed using the open-cut method, with four entrances / exits, two ventilation shafts, and the bottom slab of the passageways and ventilation ducts buried at a depth of approximately 3-11 meters. Therefore, for open-cut construction, the waterproofing level of the underground space, passageway entrances / exits, and ventilation ducts is Class I; the structure must not be permeable to water, and the structural surface must be dry.

[0003] However, the construction of waterproof narrow trenches in traditional subway stations is difficult. The width of the trenches is usually ≤1.5m. Traditional cast-in-place processes are difficult to implement due to space limitations, and the joint treatment of prefabricated structures is difficult, which can easily lead to leakage channels. Summary of the Invention

[0004] The purpose of this invention is to provide a narrow-groove prefabricated waterproof structure for subway stations to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a waterproof structure for a narrow-slot prefabricated subway station, including a waterproof base plate disposed between narrow slots. The top surface of the waterproof base plate has first grooves on both sides, and corner connectors are disposed in the first grooves. A waterproof side plate is fixedly connected to the top surface of the corner connectors through a corner connecting mechanism. A waterproof top plate is fixedly connected between the tops of the two waterproof side plates. A support plate is fixedly connected between the two waterproof side plates. Support columns are symmetrically fixed to the top and bottom surfaces of the support plate. A waterproof mechanism is provided between the waterproof base plate and the corner connectors.

[0006] Optionally, the bottom of the corner connector is located within the first groove, and the waterproof mechanism includes a second groove symmetrically arranged on both sides of the bottom of the corner connector, with a waterproof pad embedded in the second groove.

[0007] Optionally, the top surface of the bottom corner connector is provided with a third groove, and the bottom surface of the waterproof side plate is provided with a fourth groove, wherein the third groove and the fourth groove are adapted to each other.

[0008] Optionally, a fifth groove is provided on one side of the third groove, and a first limiting protrusion is provided at the bottom of the waterproof side plate, the first limiting protrusion being adapted to the fifth groove.

[0009] Optionally, the bottom corner connecting mechanism includes a sixth groove symmetrically arranged outside the fifth groove. The bottom corner connector and the first limiting protrusion are respectively provided with interconnected connecting holes. A steel wire is inserted into the connecting hole. The two ends of the steel wire are respectively located in the sixth groove. An anchor is fixedly connected to one end of the steel wire in the sixth groove, and the anchor is fixedly connected to the steel wire.

[0010] Optionally, a seventh groove is provided on the top of the waterproof side plate near the waterproof top plate, and second limiting protrusions are symmetrically provided on both sides of the waterproof top plate, the second limiting protrusions and the seventh groove adjacent to them are adapted to each other.

[0011] Optionally, the top surface of the waterproof side plate has a plurality of first through holes at equal intervals, and the top surface of the second limiting protrusion is provided with a plurality of first threaded holes at equal intervals. The number and position of the first through holes and the first threaded holes are set in a corresponding manner, and a first screw is threaded into the first threaded hole.

[0012] Optionally, a side plate connector is fixed to the side of the waterproof side plate near the support plate, and an eighth groove is provided on the side of the side plate connector near the support plate. The support plate is located in the eighth groove, and a plurality of second screws are equally spaced between the support plate and the side plate connector.

[0013] Optionally, the waterproof base plate, the waterproof side plate, and the waterproof top plate are each provided with an inner waterproof lining layer.

[0014] Optionally, the waterproof base plate consists of a plain concrete cushion layer, a non-curing rubber asphalt coating, a plain cloth composite milky white waterproof membrane, and a protective layer.

[0015] This invention discloses the following technical effects: a waterproof base plate is laid on a narrow trench base, with bottom corner connectors embedded in the first grooves on both sides; waterproof side plates are connected to the connectors via bottom corner connection mechanisms, and the top is covered by a waterproof top plate, forming a closed cavity; a support plate transfers the load to the base plate through support columns, forming a spatial rigid frame system. Rapid assembly is achieved through modular prefabricated components, solving the structural construction problem under the space constraints of narrow trenches; the synergistic effect of the bottom corner connectors and the waterproof mechanism forms the first line of defense against leakage. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the narrow-groove prefabricated waterproof structure for subway stations according to the present invention;

[0018] Figure 2This is a front view of the narrow-groove prefabricated waterproof structure for subway stations according to the present invention.

[0019] Figure 3 For the present invention Figure 2 A magnified view of part A in the image.

[0020] Figure label:

[0021] 1. Waterproof base plate; 2. First groove; 3. Bottom corner connector; 4. Waterproof side plate; 5. Waterproof top plate; 6. Support plate; 7. Support column; 8. Second groove; 9. Waterproof padding; 10. Third groove; 11. Fourth groove; 12. Fifth groove; 13. First limiting protrusion; 14. Sixth groove; 15. Connecting hole; 16. Steel wire; 17. Anchor; 18. Seventh groove; 19. Second limiting protrusion; 20. First through hole; 21. First threaded hole; 22. First screw; 23. Side plate connector; 24. Eighth groove; 25. Second screw. Detailed Implementation

[0022] Narrow, wide trenches, a typical geological environment in subway station construction, are characterized by limited construction space, complex geological conditions, abundant and high-pressure groundwater. This environment places extremely stringent requirements on the design and construction of waterproofing structures. First, the narrow construction space restricts the use of large construction machinery, making traditional cast-in-place concrete construction methods difficult to implement effectively. Second, the complex geological conditions increase the difficulty of waterproofing structure design, requiring comprehensive consideration of factors such as geological stability, groundwater permeability, and soil pressure distribution. Finally, the high-pressure environment places higher demands on the durability and impermeability of waterproofing materials, necessitating the use of high-performance waterproofing materials and technologies to ensure the long-term stability and safety of the structure.

[0023] In narrow, wide-slot environments, the design and construction of waterproof structures for prefabricated subway stations face numerous challenges. On one hand, the treatment of joints in prefabricated structures is a crucial aspect of waterproofing design. Ensuring the sealing and durability of these joints to prevent groundwater from seeping into the structure is a key concern for designers. On the other hand, the overall stability and seismic performance of the prefabricated structure also need to be adequately guaranteed to ensure its safety and reliability in extreme conditions such as earthquakes.

[0024] In the waterproofing structural design of narrow-gauge prefabricated subway stations, traditional waterproofing technologies still hold a certain position. These technologies mainly include cast-in-place concrete waterproofing, rolled waterproofing membranes, and coating waterproofing. However, with the continuous deepening of engineering practice, the limitations of traditional waterproofing technologies have gradually become apparent.

[0025] Cast-in-place concrete waterproofing technology, with its advantages of good integrity and strong impermeability, has been widely used in waterproofing projects for subway stations. However, in narrow and deep trench environments, the construction of cast-in-place concrete is more difficult, requiring the construction of complex formwork support systems and a long curing period, making it difficult to meet the needs of rapid construction. In addition, cast-in-place concrete is prone to shrinkage cracks during the hardening process, which can become channels for groundwater seepage, thus affecting the waterproofing performance of the structure.

[0026] Waterproofing membranes, with their advantages of convenient construction and strong adaptability, are widely used in waterproofing projects in subway stations. However, the construction quality of waterproofing membranes is greatly affected by human factors, such as improper overlaps or damage, which can lead to waterproofing failure. Furthermore, in narrow trench environments, the laying and fixing of the membranes presents numerous challenges, such as limited space and inconvenient operation, all of which affect the construction quality and effectiveness of the waterproofing membrane.

[0027] Waterproof coatings, with their advantages of flexible application and continuous film formation, are used in waterproofing projects in subway stations. However, the quality of waterproof coating application is also greatly affected by human factors; uneven application or missed areas can lead to waterproofing failure. Furthermore, waterproof coatings have relatively poor durability and are easily damaged by groundwater and chemicals.

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 3 As shown, this embodiment provides a waterproof structure for a narrow-slot prefabricated subway station, including a waterproof base plate 1 set between narrow slots. The top surface of the waterproof base plate 1 has first grooves 2 on both sides. The first grooves 2 have corner connectors 3. The top surface of the corner connectors 3 is fixed to waterproof side plates 4 through a corner connection mechanism. A waterproof top plate 5 is fixed between the tops of the two waterproof side plates 4. A support plate 6 is fixed between the two waterproof side plates 4. Support columns 7 are symmetrically fixed to the top and bottom surfaces of the support plate 6. A waterproof mechanism is provided between the waterproof base plate 1 and the corner connectors 3.

[0031] A waterproof base plate 1 is laid on the narrow trench base, with the first grooves 2 on both sides embedded with the bottom corner connectors 3; waterproof side plates 4 are connected to the connectors through the bottom corner connection mechanism, and the top is covered by a waterproof top plate 5, forming a closed cavity; the support plate 6 transfers the load to the base plate through the support column 7, forming a spatial rigid frame system. Rapid assembly is achieved through modular prefabricated components, solving the structural construction problem under the space constraints of the narrow trench; the synergistic effect of the bottom corner connectors 3 and the waterproof mechanism forms the first line of defense against leakage.

[0032] In a further optimized design, the bottom of the corner connector 3 is located within the first groove 2, and the waterproof mechanism includes a second groove 8 symmetrically arranged on both sides of the bottom of the corner connector 3, with a waterproof pad 9 embedded in the second groove 8.

[0033] The second groove 8 contains a waterproof pad 9, which forms a compression seal at the joint between the bottom corner connector 3 and the base plate. The pad's elastic deformation capability adapts to construction errors and minor structural deformations, achieving dynamic waterproof sealing at the joint.

[0034] The design is further optimized by providing a third groove 10 on the top surface of the bottom corner connector 3 and a fourth groove 11 on the bottom surface of the waterproof side plate 4, with the third groove 10 and the fourth groove 11 being compatible.

[0035] In a further optimized design, a fifth groove 12 is provided on one side of the third groove 10, and a first limiting protrusion 13 is provided at the bottom of the waterproof side plate 4. The first limiting protrusion 13 is adapted to the fifth groove 12.

[0036] The first limiting protrusion 13 of the waterproof side plate 4 is inserted into the fifth groove 12 to limit the waterproof side plate 4.

[0037] The scheme is further optimized. The bottom corner connection mechanism includes a sixth groove 14 symmetrically arranged outside the fifth groove 12. The bottom corner connector 3 and the first limiting protrusion 13 are respectively provided with interconnected connecting holes 15. A steel wire 16 is inserted into the connecting hole 15. The two ends of the steel wire 16 are respectively located in the sixth groove 14. An anchor 17 is fixedly connected to one end of the steel wire 16 in the sixth groove 14. The anchor 17 is fixedly connected to the steel wire 16.

[0038] The third groove 10 and the fourth groove 11 form a tenon-and-mortise engagement, while the fifth groove 12 and the first limiting protrusion 13 achieve lateral limiting. The steel wire 16 passes through the connecting hole 15 and is anchored at both ends to the anchor seat 17 of the sixth groove 14, forming a tension locking structure. The tenon-and-mortise structure enhances the connection rigidity, and the steel wire 16 anchoring system provides prestress to ensure that the joints of the waterproof side plate 4 do not crack or leak under seismic forces or soil pressure.

[0039] In a further optimized design, a seventh groove 18 is provided on the top of the waterproof side plate 4 near the waterproof top plate 5, and second limiting protrusions 19 are symmetrically provided on both sides of the waterproof top plate 5. The second limiting protrusions 19 and the seventh groove 18 adjacent to them are adapted to each other.

[0040] The design is further optimized by having multiple first through holes 20 at equal intervals on the top surface of the waterproof side plate 4, and multiple first threaded holes 21 at equal intervals on the top surface of the second limiting protrusion 19. The number and position of the first through holes 20 and the first threaded holes 21 are set accordingly, and the first threaded holes 21 are internally threaded with first screws 22.

[0041] The seventh groove 18 and the second limiting protrusion 19 achieve vertical limiting. The first screw 22 passes through the first through hole 20 and locks with the first threaded hole 21, forming a rigid connection node. The double limiting structure prevents the top plate from slipping, and the bolt connection enables quick assembly and disassembly, facilitating later maintenance and repair.

[0042] In a further optimized design, a side plate connector 23 is fixedly connected to the side of the waterproof side plate 4 near the support plate 6. The side plate connector 23 near the support plate 6 has an eighth groove 24. The support plate 6 is located in the eighth groove 24. Multiple second screws 25 are equally spaced between the support plate 6 and the side plate connector 23.

[0043] The eighth groove 24 of the side plate connector 23 engages with the support plate 6, and the second screw 25 extends laterally through the side plate connector 23 to form a shear force transmission path with the support plate 6. The support plate 6 works in conjunction with the waterproof side plate 4 to improve the overall structural lateral stiffness; the detachable connection design adapts to different span requirements.

[0044] The design has been further optimized by installing an inner waterproof lining layer inside the waterproof base plate 1, waterproof side plate 4, and waterproof top plate 5.

[0045] The design was further optimized, and the waterproof base plate 1 consists of a plain concrete cushion layer, a non-curing rubber asphalt coating, a flat cloth composite milky white waterproof membrane, and a protective layer.

[0046] The inner waterproof lining (such as an HDPE membrane) is fixed to the inner surface of the structure with adhesive; the plain concrete cushion layer provides the foundation load-bearing capacity; the non-curing rubber asphalt coating forms a self-healing waterproof layer; the flat-weave composite milky white waterproof membrane enhances puncture resistance; and the protective layer resists mechanical damage. An acrylic spray waterproofing material is introduced, which forms a seamless, continuous membrane layer through high-pressure airless spraying. After 2 hours of quick-drying and curing, it possesses superior elasticity and can adaptively adjust to structural deformation.

[0047] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A narrow-groove prefabricated waterproof structure for subway stations, characterized in that: The waterproof base plate (1) is set between narrow grooves. The top surface of the waterproof base plate (1) is provided with first grooves (2) on both sides. The first grooves (2) are provided with bottom corner connectors (3). The top surface of the bottom corner connectors (3) is fixed to a waterproof side plate (4) through a bottom corner connection mechanism. A waterproof top plate (5) is fixed between the tops of the two waterproof side plates (4). A support plate (6) is fixed between the two waterproof side plates (4). The top and bottom surfaces of the support plate (6) are respectively symmetrically fixed with support columns (7). A waterproof mechanism is provided between the waterproof base plate (1) and the bottom corner connectors (3).

2. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The bottom of the corner connector (3) is located in the first groove (2), and the waterproof mechanism includes a second groove (8) symmetrically arranged on both sides of the bottom of the corner connector (3), and a waterproof pad (9) is embedded in the second groove (8).

3. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The top surface of the bottom corner connector (3) is provided with a third groove (10), and the bottom surface of the waterproof side plate (4) is provided with a fourth groove (11). The third groove (10) and the fourth groove (11) are adapted to each other.

4. The narrow-groove prefabricated waterproof structure for subway stations according to claim 3, characterized in that: The third groove (10) has a fifth groove (12) on one side, and the bottom of the waterproof side plate (4) has a first limiting protrusion (13) that is adapted to the fifth groove (12).

5. The narrow-groove prefabricated waterproof structure for subway stations according to claim 4, characterized in that: The bottom corner connection mechanism includes a sixth groove (14) symmetrically arranged outside the fifth groove (12). The bottom corner connector (3) and the first limiting protrusion (13) are respectively provided with interconnected connecting holes (15). A steel wire (16) is inserted into the connecting hole (15). The two ends of the steel wire (16) are respectively located in the sixth groove (14). An anchor (17) is fixedly connected to one end of the sixth groove (14) near the steel wire (16). The anchor (17) is fixedly connected to the steel wire (16).

6. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The top of the waterproof side plate (4) is provided with a seventh groove (18) on the side close to the waterproof top plate (5). The waterproof top plate (5) is provided with second limiting protrusions (19) on both sides. The second limiting protrusions (19) and the seventh groove (18) adjacent to them are adapted to each other.

7. The narrow-groove prefabricated waterproof structure for subway stations according to claim 6, characterized in that: The top surface of the waterproof side plate (4) has a plurality of first through holes (20) spaced at equal intervals, and the top surface of the second limiting protrusion (19) has a plurality of first threaded holes (21) spaced at equal intervals. The number and position of the first through holes (20) and the first threaded holes (21) are set in a corresponding manner, and the first threaded hole (21) is internally threaded with a first screw (22).

8. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The waterproof side plate (4) is fixedly connected to a side plate connector (23) on the side near the support plate (6). The side plate connector (23) is provided with an eighth groove (24) on the side near the support plate (6). The support plate (6) is located in the eighth groove (24). A plurality of second screws (25) are equally spaced between the support plate (6) and the side plate connector (23).

9. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The waterproof base plate (1), the waterproof side plate (4), and the waterproof top plate (5) are each provided with an inner waterproof lining layer.

10. The narrow-groove prefabricated waterproof structure for subway stations according to claim 1, characterized in that: The waterproof base plate (1) consists of a plain concrete cushion layer, a non-curing rubber asphalt coating, a flat cloth composite milky white waterproof membrane, and a protective layer.

Images