Combined waterproof structure for vertical side wall joint of assembly type subway station

Abstract

The utility model discloses an assembly type subway station vertical side wall joint combined waterproof structure, which belongs to the field of subway construction, and comprises a station side wall and a station bottom plate, a waterproof sealing gasket is arranged between the station side wall and the station bottom plate, the bottom of the station side wall is provided with a mortise groove, and the mortise groove is connected with the waterproof sealing gasket. A tenon matched with the mortise groove is arranged at the top of the station bottom plate, a reserved hole is formed in the top of the tenon, and a water stop steel plate penetrates through the bottom of the mortise groove and extends into the reserved hole. According to the combined waterproof structure for the vertical side wall joints of the assembly type subway station, novel waterproof measures of two pads, one steel, one injection and one embedding are adopted, the waterproof effect between the vertical side wall joints of the assembly type subway station can be greatly improved, and the combined waterproof structure has good social and economic values.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of subway construction, especially to a joint waterproof structure of assembled subway station vertical side wall joint. BACKGROUND

[0002] At present, the state is vigorously promoting the modernization of the building industry, and major cities are also accelerating the construction of subways. Assembled subway stations use the method of factory prefabrication and on-site assembly, which has the advantages of fast construction speed and good structure quality, so it has ushered in rapid development. However, the assembled subway station is located below the ground and is threatened by the penetration of underground water for a long time. If the structure waterproofing is not handled properly, not only will it seriously affect the durability and service life of the structure, but also it will cause underground water to seep into the building, seriously affecting the normal use of the building. At the same time, a large amount of water leakage may also cause surrounding subsidence and have a bad impact on the underground water environment.

[0003] A large number of practical engineering projects have proved that the quality of joint waterproofing is the key link to ensure the overall quality of the assembled underground station. At present, most assembled subway stations use grouting type mortise joints, and the joint uses a multi-line waterproofing technology of "two pads + one injection + one embedding", that is, double waterproof sealing pads as the main line of defense, and grouting and embedding as auxiliary lines of defense.

[0004] The Chinese authorized utility model "A prefabricated assembled concrete underground structure waterproof system" (patent application number: 202221575793.6) discloses a combined waterproof system composed of multiple waterproof measures such as self-waterproofing (double coating) of assembled prefabricated structure, flexible additional waterproofing (strip capsule water stop belt, glass fiber cloth), joint waterproofing (grouting, grouting, embedding), bolt hole waterproofing (washer, water-swelling water stop strip), etc. This system effectively solves the problem of multiple joints in assembled prefabricated structures and the problem of easy water leakage, but the existing technology including the above technology still cannot solve the problems of aging failure of waterproof rubber after long-term use and decline of waterproof effect caused by non-dense grouting. Therefore, how to further optimize the existing joint waterproofing measures and propose a combined waterproof structure with better waterproof quality has become an important topic to be solved at present. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a joint waterproof structure of assembled subway station vertical side wall joint, which adopts a new waterproofing measure of "two pads + one steel + one injection + one embedding", can greatly improve the waterproof effect between the joint of the assembled subway station vertical side wall, and has good social and economic value.

[0006] To achieve the above objectives, this utility model provides a prefabricated subway station vertical sidewall joint waterproof structure, including a station sidewall and a station base plate. A waterproof sealing gasket is provided between the station sidewall and the station base plate. A mortise is provided at the bottom of the station sidewall, and a tenon matching the mortise is provided at the top of the station base plate. A reserved hole is provided at the top of the tenon, and a water-stop steel plate passes through the bottom of the mortise and extends into the reserved hole.

[0007] Preferably, the water-stop steel plate is T-shaped, and the top of the water-stop steel plate is welded to the reinforcing steel inside the station side wall.

[0008] Preferably, the outer side of the waterstop steel plate is coated with a layer of rust inhibitor.

[0009] Preferably, the depth of the reserved hole is greater than 1.5 times the length of the waterstop steel plate extending into the reserved hole.

[0010] Preferably, the station side wall is provided with an exhaust hole, one end of which is connected to the outside air and the other end is fixedly connected to the mortise groove.

[0011] Preferably, the station floor is provided with grouting holes, one end of which is connected to the outside air and the other end is fixedly connected to the reserved hole.

[0012] Therefore, the present invention adopts the above-mentioned prefabricated subway station vertical sidewall joint waterproof structure, which has the following beneficial effects:

[0013] (1) The waterstop steel plate assumes the waterproof function when the waterproof sealing gasket fails and the grouting is not dense;

[0014] (2) The pre-drilled holes on the tenon increase the penetration path of the grout, making the mortise and tenon tightly connected;

[0015] (3) A new type of combined waterproofing layout of "two pads + one steel + one injection + one embedding" has been formed, which can greatly improve the waterproofing effect.

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of an embodiment of a prefabricated subway station vertical sidewall joint waterproofing structure.

[0018] Figure Labels

[0019] 1. Station sidewall; 2. Waterproof sealing gasket; 3. Station floor slab; 4. Water-stop steel plate; 5. Mortise and tenon; 6. Tenon; 7. Reserved holes; 8. Vent holes; 9. Grouting holes. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Example 1

[0023] like Figure 1 As shown, this utility model provides a prefabricated subway station vertical sidewall joint waterproof structure, including a station sidewall 1, a waterproof sealing gasket 2, and a station base 3. The station sidewall 1 encloses the station space, and the station base 3 supports the weight of the station. A waterproof sealing gasket 2 is installed between the station sidewall 1 and the station base 3 to prevent water from seeping into the station interior. Both the station sidewall 1 and the station base 3 are manufactured in a factory using C50 or P10 grade waterproof concrete. The waterproof sealing gasket 2 uses EPDM rubber as the primary waterproofing material and composite water-swellable rubber as a reinforcing waterproofing layer.

[0024] The station side wall 1 has a mortise 5 at its bottom, and the station base slab 3 has a tenon 6 at its top that matches the mortise 5, ensuring a tight connection between the station side wall 1 and the station base slab 3. The top of the tenon 6 has a pre-drilled hole 7 for grouting and installation of the water-stop steel plate 4. The top of the "T"-shaped water-stop steel plate 4 is welded to the internal reinforcing steel bars of the station side wall 1, which not only strengthens the connection between the water-stop steel plate 4 and the station side wall 1 but also enhances the tensile strength of the overall structure. The water-stop steel plate 4 extends through the bottom of the mortise 5 into the pre-drilled hole 7, forming an effective waterproof barrier to prevent groundwater or seepage from entering the station interior. The outer side of the water-stop steel plate 4 is coated with a rust inhibitor, which helps extend its service life and prevents performance degradation due to corrosion. The depth of the reserved hole 7 is twice the length of the waterstop steel plate 4 extending into the reserved hole 7. The longer reserved hole 7 can provide more space and sufficient space for grouting operations, ensuring that the grout can fully fill the gap between the waterstop steel plate 4 and the reserved hole 7, forming a more solid connection.

[0025] Vent holes 8 are provided on the station side wall 1. One end of the vent hole 8 is connected to the outside air, and the other end is fixedly connected to the mortise 5. The main function of the vent hole 8 is to expel the air in the mortise 5 during construction, preventing air accumulation from affecting the tight fit between the mortise 5 and the tenon 6. In addition, the vent hole 8 can also help regulate the internal air pressure during use, preventing structural deformation or damage caused by the pressure difference between the inside and outside.

[0026] The station base slab 3 is equipped with grouting holes 9. One end of the grouting hole 9 is connected to the outside air, and the other end is fixedly connected to the reserved hole 7. The main function of the grouting hole 9 is to inject grout through the reserved hole 7 during construction, ensuring that the gap between the mortise 5 and the tenon 6 is fully filled, forming a more solid connection. The design of the grouting hole 9 also ensures that the grout is evenly distributed, improving the overall stability and waterproof performance of the structure.

[0027] Working principle: After all components are installed in place at the construction site, grouting is carried out through the grouting hole 9. The grout fills the reserved hole 7 and seeps out, gradually filling the gap between the mortise 5 and the tenon 6, and expelling the air in the gap through the vent hole 8. This achieves a combined waterproof structure with two waterproof sealing gaskets 2 and water-stop steel plate 4 as the main defense line, and grouting and caulking as the auxiliary defense line.

[0028] Therefore, this utility model adopts the above-mentioned joint waterproof structure for the vertical sidewall joints of prefabricated subway stations, and adopts a new waterproofing measure of "two pads + one steel + one injection + one embedding", which can greatly improve the waterproofing effect between the vertical sidewall joints of prefabricated subway stations and has good social and economic value.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A prefabricated subway station vertical sidewall joint waterproofing structure, characterized in that: The station includes a station side wall and a station base plate. A waterproof sealing gasket is provided between the station side wall and the station base plate. The bottom of the station side wall is provided with a mortise. The top of the station base plate is provided with a tenon that matches the mortise. The top of the tenon is provided with a reserved hole. A water-stop steel plate passes through the bottom of the mortise and extends into the reserved hole.

2. The prefabricated subway station vertical sidewall joint waterproofing structure according to claim 1, characterized in that: The water-stop steel plate is T-shaped, and the top of the water-stop steel plate is welded to the steel bars inside the station side wall.

3. The prefabricated subway station vertical sidewall joint waterproofing structure according to claim 1, characterized in that: The outer side of the water-stop steel plate is coated with a layer of rust inhibitor.

4. The prefabricated subway station vertical sidewall joint waterproofing structure according to claim 1, characterized in that: The depth of the reserved hole is greater than 1.5 times the length of the water-stop steel plate extending into the reserved hole.

5. The prefabricated subway station vertical sidewall joint waterproofing structure according to claim 1, characterized in that: The station side wall is provided with an exhaust hole, one end of which is connected to the outside air and the other end is fixedly connected to the mortise groove.

6. The prefabricated subway station vertical sidewall joint waterproofing structure according to claim 1, characterized in that: The station floor is provided with grouting holes, one end of which is connected to the outside air and the other end is fixedly connected to the reserved hole.

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