A silt geology structure foundation pit steel sheet pile joint air bag blocking device

Abstract

The application belongs to the technical field of steel sheet pile sealing, and discloses a silt geology structure foundation pit steel sheet pile joint air bag sealing device, which comprises a supporting body, an air bag and an elastic sealing body, the supporting body is provided with a connecting section and a supporting section which is arranged at an angle with the connecting section, the connecting section is used for being installed on the steel sheet pile, the air bag is arranged on the supporting section so that the supporting section can support the air bag, and the elastic sealing body is connected to the air bag and located on the side of the air bag away from the supporting section, so that the air bag sealing device in the application can be connected to the steel sheet pile in a separate installation mode, thereby avoiding the damage of the air bag during the installation of the steel sheet pile, on the one hand, the air bag sealing device can seal the adjacent two steel sheet piles to ensure the forming quality of the concrete structure, and on the other hand, the waste of resources is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of sheet pile sealing, specifically relating to an airbag sealing device for the joints of sheet piles in foundation pits of silty sand geological structures. Background Technology

[0002] As a key component of engineering structures, concrete structures directly determine the overall safety, practicality, and durability of a project. Due to my country's vast territory and significant differences in geological conditions across different regions, this diversity of geological environments for engineering construction presents a severe challenge to the molding quality of concrete structures.

[0003] Silt geology, as a type of geological environment, has characteristics such as high water content and strong permeability. Therefore, when steel sheet piles are used to support the foundation pit, water seepage will occur between two adjacent steel sheet piles. This will affect the forming stability of the concrete structure and thus affect the forming quality of the concrete structure.

[0004] To enhance the sealing between two adjacent sheet piles and ensure the quality of concrete structure formation, a novel sheet pile structure suitable for underwater operations (publication number CN210658315U) is disclosed in the prior art. This structure includes a sheet pile body with a first interface and a second interface formed on both sides. An airbag is embedded at either the first or second interface. During assembly, the first interface of one sheet pile body engages with the second interface of the other adjacent sheet pile body. The airbag is then inflated to seal the joint between the two sheet pile bodies, thereby increasing the sealing between the two adjacent sheet piles and ensuring the quality of the concrete structure formation. However, during the installation of sheet piles, they are usually placed vertically first, and then downward pressure is applied to insert them into the soil. Since the airbag is embedded in the first or second joint, it can be damaged during the installation process. This causes the airbag to leak when inflated, making it unable to seal the joint between adjacent sheet piles effectively or resulting in a poor seal. Consequently, the airtightness between adjacent sheet piles is also affected. Utility Model Content

[0005] This application provides an airbag sealing device for the joints of sheet piles in foundation pits of silty sand geological structures to ensure the sealing between two adjacent sheet piles.

[0006] The technical solution adopted in this application is as follows: An airbag sealing device for the joint of sheet piles in a foundation pit of a silty sand geological structure includes a support body, an airbag, and an elastic sealing body. The support body has a connecting section and a supporting section arranged at an angle to the connecting section. The connecting section is used for installation on the sheet pile. The airbag is disposed on the supporting section so that the supporting section can support the airbag. The elastic sealing body is connected to the airbag and located on the side of the airbag away from the supporting section.

[0007] By adopting the above technical solution, when using the airbag sealing device of this application, the sheet piles are first installed and assembled, and then the support body is fixed to one of the two adjacent sheet piles. That is, the connecting section is fixedly connected to one of the sheet piles, while the elastic sealing body faces the joint formed between the two adjacent sheet piles. Then the airbag is inflated, so that the airbag gradually expands. The expanding airbag applies a compressive force to the elastic sealing body away from the support body, thereby causing the elastic sealing body to face towards the two sheet piles under the compressive action of the airbag. The airbag moves within the joint formed between the two sheet piles. When the airbag is fully inflated, the elastic sealing body extends into the joint formed between the two sheet piles under the action of the airbag, and the elastic sealing body presses against the two sheet piles. This achieves the sealing of the joint between the two sheet piles by using the elastic sealing body, thereby ensuring the sealing between the two adjacent sheet piles. Therefore, by using the airbag sealing device in this application to seal the joint between two adjacent sheet piles, the molding stability of the concrete structure can be guaranteed, thus ensuring the molding quality of the concrete structure.

[0008] Furthermore, the airbag sealing device in this application is installed separately after the sheet piles are installed. Compared with the prior art where the airbag is embedded in the interface, this avoids the possibility of damage to the airbag during the installation of the sheet piles. On the one hand, it ensures that the airbag sealing device can seal two adjacent sheet piles to ensure the forming quality of the concrete structure, and on the other hand, it reduces the waste of resources.

[0009] Optionally, the elastic seal has a sealing section whose width gradually decreases in the direction away from the airbag.

[0010] By adopting the above technical solution, since the width of the sealing section gradually decreases in the direction away from the airbag, the difficulty of inserting the elastic sealing body into the joint formed between two adjacent steel sheet piles is reduced, thereby reducing the installation difficulty of the airbag sealing device. At the same time, it can also increase the contact area between the elastic sealing body and the two adjacent steel sheet piles, thereby further increasing the sealing effect of the airbag sealing device on the two adjacent steel sheet piles.

[0011] Optionally, the elastic seal further includes a force-bearing section, the width of which is greater than the width of the sealing section and greater than or equal to the width of the airbag on the side closest to the elastic seal.

[0012] By adopting the above technical solution, since the width of the stress-bearing section is greater than the width of the sealing section and greater than or equal to the width of the side of the airbag close to the elastic seal, the stress-bearing area of ​​the airbag is increased, thereby reducing the pressure between the airbag and the elastic seal. This avoids the situation where the airbag is prone to explosion due to high air pressure in the airbag. On the other hand, the stress-bearing section can also increase the stress-bearing area of ​​the elastic seal, thereby increasing the squeezing effect of the airbag on the elastic seal, and further ensuring the sealing effect of the airbag sealing device on the joint between two adjacent steel sheet piles.

[0013] Optionally, the sealing section has a deformation cavity inside, and the end of the sealing section has an exhaust port communicating with the deformation cavity.

[0014] By adopting the above technical solution, the airbag is inflated, so that when the airbag squeezes the elastic seal, the elastic seal undergoes elastic deformation under the squeezing action of the airbag. As a result, the volume of the deformation cavity gradually decreases, and the gas in the deformation cavity is gradually discharged through the exhaust hole. This allows the outer contour of the elastic seal to adapt to the shape of the joint formed between two adjacent sheet piles, thereby increasing the contact area between the elastic seal and the two adjacent sheet piles. This further enhances the sealing effect of the airbag sealing device on the two adjacent sheet piles.

[0015] Meanwhile, by setting up deformation cavities and vent holes, the deformation capacity of the elastic sealing body can be increased, so that the airbag sealing device can be applied to various types of steel sheet piles. On the other hand, the deformation response efficiency of the elastic sealing body can be increased, so as to improve the sealing effect on two adjacent steel sheet piles.

[0016] Optionally, the support body further includes a protective section located outside the airbag, the width of which is less than the distance between the support section and the elastic sealing body when the airbag is fully inflated.

[0017] By adopting the above technical solution, since the protective section is located on the outside of the airbag, it can protect the airbag and prevent external debris or gravel from damaging it. Furthermore, since the width of the protective section is less than the distance between the support section and the elastic seal when the airbag is fully inflated, the protective section can avoid interfering with the elastic seal and thus preventing the movement of the elastic seal from being affected.

[0018] Optionally, the airbag is provided with an air valve, which is disposed through the protective section.

[0019] By adopting the above technical solution, since the airbag is equipped with a valve, it is convenient to inflate the airbag and also convenient to keep the air pressure inside the airbag constant. Since the valve is installed through the protective section, the protective section can be used to position the valve to increase the stability of the valve. Furthermore, the cooperation between the valve and the protective section can be used to limit the airbag to increase the connection stability between the airbag and the support.

[0020] Optionally, the support section is provided with a connecting hole, and the airbag is provided with a connecting post passing through the connecting hole.

[0021] By adopting the above technical solution, since the support section is provided with connecting holes and the airbag is provided with connecting posts passing through the connecting holes, the airbag is connected to the support body on the one hand, so as to facilitate the assembly of the airbag sealing device. On the other hand, it also facilitates the replacement of the airbag, so that the support body can be reused, thereby reducing the usage cost of the airbag sealing device.

[0022] Optionally, the connecting column is provided with a limiting hole, the central axis of the limiting hole is perpendicular to the central axis of the connecting column, a limiting pin is inserted through the limiting hole, and the limiting pin is located on the side of the support section away from the airbag.

[0023] By adopting the above technical solution, since the central axis of the limiting hole is set perpendicular to the central axis of the connecting column, a limiting pin is inserted in the limiting hole, and the limiting hole is located on the side of the support section away from the airbag, the connecting column can be limited by the cooperation of the limiting pin and the stop of the support section, so as to avoid the connecting column from separating from the connecting hole, thereby increasing the connection stability between the airbag and the support body.

[0024] Optionally, one end of the limiting pin is provided with a fixing plate, and a fixing screw threaded into the fixing plate is provided for connection to the support section.

[0025] By adopting the above technical solution, since a fixing piece is provided at one end of the limiting pin, it is easier to insert the limiting pin into the limiting hole, thereby reducing the difficulty of installing the limiting pin and improving the assembly efficiency of the airbag sealing device. Furthermore, since a fixing screw with a threaded connection to the support section is provided in the fixing piece, the fixing piece can be fixedly connected to the support section using the fixing screw, thereby increasing the stability of the limiting pin and preventing the limiting pin from separating from the limiting hole, thus increasing the connection stability between the airbag and the support body.

[0026] Optionally, the connecting segment is provided with a receiving hole, and a magnet is disposed in the receiving hole.

[0027] By adopting the above technical solution, since the receiving hole is equipped with a magnet, when installing the airbag sealing device, the airbag sealing device can be placed on the steel sheet pile first, so that the magnet is attracted to the steel sheet pile, thereby temporarily fixing the airbag sealing device. Then, the support body is fixed to the steel sheet pile with screws, thereby facilitating the fixing of the airbag sealing device and improving the installation efficiency of the airbag sealing device.

[0028] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The airbag sealing device of this application includes a support body, an airbag, and an elastic sealing body. The support body has a connecting section and a supporting section set at an angle to the connecting section. The connecting section is used for installation on the sheet pile. The airbag is located on the supporting section so that the supporting section can support the airbag. The elastic sealing body is connected to the airbag and located on the side of the airbag away from the supporting section. Thus, the airbag sealing device of this application can seal the joint formed between two adjacent sheet piles by installation alone. Compared with the prior art solution of embedding the airbag in the interface, it avoids the possibility of damage to the airbag during the installation of the sheet pile. On the one hand, it ensures that the airbag sealing device can seal two adjacent sheet piles to ensure the forming quality of the concrete structure. On the other hand, it reduces the waste of resources.

[0029] 2. The elastic sealing body in this application has a sealing section, the width of which gradually decreases in the direction away from the airbag. This reduces the difficulty of inserting the elastic sealing body into the joint formed between two adjacent sheet piles, thereby reducing the installation difficulty of the airbag sealing device. At the same time, it can also increase the contact area between the elastic sealing body and the two adjacent sheet piles, thereby further increasing the sealing effect of the airbag sealing device on the two adjacent sheet piles.

[0030] 3. The elastic sealing body in this application also includes a force-bearing section. The width of the force-bearing section is greater than the width of the sealing section and greater than or equal to the width of the side of the airbag near the elastic sealing body. This increases the force-bearing area of ​​the airbag, thereby reducing the pressure between the airbag and the elastic sealing body and preventing the airbag from easily exploding due to high air pressure. On the other hand, the force-bearing section can also increase the force-bearing area of ​​the elastic sealing body, thereby increasing the compression effect of the airbag on the elastic sealing body and further ensuring the sealing effect of the airbag sealing device on the joint between two adjacent steel sheet piles. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1This is a schematic diagram showing the connection relationship between the airbag sealing device and the seam in one embodiment of this application; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 This is a partial structural cross-sectional view of the airbag sealing device described in one embodiment of this application; Figure 4 This is a partial structural schematic diagram of the airbag sealing device according to one embodiment of this application, mainly showing the connection method between the fixing plate and the support section; Figure 5 This is a schematic diagram of the structure of the limiting pin described in one embodiment of this application.

[0032] Figure label: 1. Sheet pile; 11. Web; 12. Wing plate; 121. Joint; 13. Clip arm; 2. Support body; 21. Connecting section; 211. Accommodating hole; 212. Magnet; 22. Supporting section; 23. Protective section; 3. Airbag; 31. Valve; 32. Connecting column; 321. Limiting pin; 322. Fixing plate; 323. Fixing bolt; 4. Elastic sealing body; 41. Sealing section; 411. Deformation cavity; 412. Exhaust hole; 42. Load-bearing section. Detailed Implementation

[0033] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0035] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 application 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, and therefore should not be construed as a limitation of this application.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0038] Reference Figure 1 To facilitate understanding of the technical solution in this application, a brief introduction to the prior art sheet pile 1 is given first. The sheet pile 1 includes a web 11 and wing plates 12 located at both ends of the web 11. The distance between the two wing plates 12 gradually increases in the direction away from the web 11, and each of the two wing plates 12 is provided with an L-shaped snap-fit ​​arm 13 at the end away from the web 11. When the sheet pile 1 is installed, an L-shaped snap-fit ​​arm 13 on one of two adjacent sheet piles 1 engages with an L-shaped snap-fit ​​arm 13 on the other sheet pile 1, and a joint 121 is formed between a wing plate 12 on one of the adjacent sheet piles 1 and an L-shaped snap-fit ​​arm 13 on the other sheet pile 1. The airbag sealing device in this application seals this joint 121.

[0039] Reference Figures 1 to 5 A sheet pile joint airbag sealing device for a foundation pit in silty sand geological structure is disclosed, comprising a support body 2, an airbag 3, and an elastic sealing body 4. The support body 2 has a connecting section 21 and a support section 22 arranged at an angle to the connecting section 21. The connecting section 21 is used to install on the sheet pile 1. The airbag 3 is located on the support section 22 so that the support section 22 can support the airbag 3. The elastic sealing body 4 is connected to the airbag 3 and is located on the side of the airbag 3 away from the support section 22.

[0040] It is understandable that the support section 22 and the connecting section 21 are integrally formed, and the elastic sealing body 4 can undergo elastic deformation under the extrusion force of the airbag 3.

[0041] When using the airbag sealing device of this application, the sheet piles 1 are first installed and assembled, and then the support body 2 is fixed to one of the two adjacent sheet piles 1. That is, the connecting section 21 is fixedly connected to the flange 12 of one of the sheet piles 1, while the elastic sealing body 4 faces the joint 121 formed between the two adjacent sheet piles 1. Then the airbag 3 is inflated, so that the airbag 3 gradually expands. The inflated airbag 3 applies a compressive force to the elastic sealing body 4 away from the support body 2, and then the elastic sealing body 4 faces the joint 121 formed between the two sheet piles 1 under the compression of the airbag 3. The airbag 3 moves within the joint 121 formed between the two sheet piles 1. When the airbag 3 is fully inflated, the elastic sealing body 4 extends into the joint 121 formed between the two sheet piles 1 under the action of the airbag 3, and the elastic sealing body 4 presses against the two sheet piles 1. This achieves the sealing of the joint 121 between the two sheet piles 1 by using the elastic sealing body 4, thereby ensuring the sealing between the two adjacent sheet piles 1. Therefore, by using the airbag sealing device in this application to seal the joint 121 between the two adjacent sheet piles 1, the molding stability of the concrete structure can be guaranteed, thus ensuring the molding quality of the concrete structure.

[0042] Furthermore, the airbag sealing device in this application is installed separately after the sheet pile 1 is installed. Compared with the prior art where the airbag 3 is embedded in the interface, this avoids the possibility of damage to the airbag 3 during the installation of the sheet pile 1. On the one hand, it ensures that the airbag sealing device can seal two adjacent sheet piles 1 to ensure the forming quality of the concrete structure, and on the other hand, it reduces the waste of resources.

[0043] This application does not specify the method of installing the connecting section 21 on the sheet pile 1. Preferably, the connecting section 21 is fixedly connected to the sheet pile 1 by screws, so as to facilitate the fixed connection of the support body 2 to the sheet pile 1. In other embodiments, the connecting section 21 can also be fixedly connected to the sheet pile 1 by welding.

[0044] This application does not specify the included angle between the support segment 22 and the connecting segment 21. Preferably, it refers to... Figure 3 The angle between the support segment 22 and the connecting segment 21 is greater than 90° to improve the support effect of the support body 2 on the airbag 3. In other embodiments, the angle between the support segment 22 and the connecting segment 21 may also be 90° or other degrees.

[0045] This application does not impose specific limitations on the manufacturing method of the support body 2. Preferably, the support body 2 is formed by bending a steel plate or iron plate to reduce the difficulty of manufacturing the support body 2. In other embodiments, the support body 2 can also be formed by casting.

[0046] This application does not specifically limit the material used to manufacture the elastic sealing body 4. Preferably, the elastic sealing body 4 is made of rubber or silicone to improve its deformation capacity, thereby further enhancing the sealing effect on the joint 121 formed between two adjacent sheet piles 1. In other embodiments, the elastic sealing body 4 may also be made of other elastic materials such as nylon.

[0047] This application does not specifically limit the structure of the elastic sealing body 4; preferably, refer to... Figure 2 and Figure 3 The elastic sealing body 4 has a sealing section 41, the width of which is gradually reduced in the direction away from the airbag 3.

[0048] It is understandable that the width of the sealing section 41 at the end away from the support body 2 is smaller than the width of the sealing section 41 at the end closer to the support body 2.

[0049] Since the width of the sealing section 41 gradually decreases in the direction away from the airbag 3, it reduces the difficulty of inserting the elastic sealing body 4 into the joint 121 formed between two adjacent steel sheet piles 1, thereby reducing the installation difficulty of the airbag sealing device. At the same time, it can also increase the contact area between the elastic sealing body 4 and the two adjacent steel sheet piles 1, thereby further increasing the sealing effect of the airbag sealing device on the two adjacent steel sheet piles 1.

[0050] Furthermore, refer to Figure 2 and Figure 3 The elastic sealing body 4 also includes a force-bearing section 42, the width of which is greater than the width of the sealing section 41 and greater than or equal to the width of the airbag 3 on the side close to the elastic sealing body 4.

[0051] It should be noted that the width of the airbag 3 near the elastic sealing body 4 mentioned above refers to the width of the airbag 3 near the elastic sealing body 4 when the airbag 3 is in a fully inflated state.

[0052] Since the width of the stress-bearing section 42 is greater than the width of the sealing section 41 and greater than or equal to the width of the side of the airbag 3 near the elastic sealing body 4, the stress-bearing area of ​​the airbag 3 is increased, thereby reducing the pressure between the airbag 3 and the elastic sealing body 4. This avoids the situation where the airbag 3 is prone to explosion due to the high air pressure in the airbag 3. On the other hand, the stress-bearing section 42 can also increase the stress-bearing area of ​​the elastic sealing body 4, thereby increasing the squeezing effect of the airbag 3 on the elastic sealing body 4. This further ensures the sealing effect of the airbag sealing device on the joint 121 between two adjacent steel sheet piles 1.

[0053] Furthermore, refer to Figure 3 The sealing section 41 has a deformation cavity 411 inside, and the end of the sealing section 41 has an exhaust hole 412 that communicates with the deformation cavity 411.

[0054] Specifically, the airbag 3 is inflated, so that when the airbag 3 compresses the elastic sealing body 4, the elastic sealing body 4 undergoes elastic deformation under the compression of the airbag 3. As a result, the volume of the deformation cavity 411 gradually decreases, and the gas in the deformation cavity 411 is gradually discharged through the exhaust hole 412. This allows the outer contour of the elastic sealing body 4 to adapt to the shape of the joint 121 formed between two adjacent steel sheet piles 1, thereby increasing the contact area between the elastic sealing body 4 and the two adjacent steel sheet piles 1, and further increasing the sealing effect of the airbag sealing device on the two adjacent steel sheet piles 1.

[0055] Meanwhile, by setting the deformation cavity 411 and the exhaust hole 412, on the one hand, the deformation capacity of the elastic sealing body 4 can be increased so that the airbag sealing device can be applied to various types of steel sheet piles 1, and on the other hand, the deformation response efficiency of the elastic sealing body 4 can be increased so as to improve the sealing effect on two adjacent steel sheet piles 1.

[0056] In other embodiments, the elastic sealing body 4 can also be a structure of other shapes, as long as it can seal the joint 121 formed between two adjacent sheet piles 1.

[0057] In a preferred embodiment, refer to Figure 2 and Figure 3 The support body 2 also includes a protective section 23 located outside the airbag 3. The width of the protective section 23 is less than the distance between the support section 22 and the elastic sealing body 4 when the airbag 3 is fully inflated.

[0058] It should be noted that the support body 2 is fixedly connected to one of the two adjacent sheet piles 1. After the support body 2 is installed on one of the sheet piles 1, the airbag 3 touches against this sheet pile 1, and the side of the airbag 3 away from this sheet pile 1 is the outer side of the sheet pile 1.

[0059] Since the protective section 23 is located on the outside of the airbag 3, it can protect the airbag 3 to prevent external debris or gravel from damaging the airbag 3. Furthermore, since the width of the protective section 23 is less than the distance between the support section 22 and the elastic sealing body 4 when the airbag 3 is fully inflated, the protective section 23 can avoid interfering with the elastic sealing body 4 and thus prevent the movement of the elastic sealing body 4 from being affected.

[0060] Preferably, the protective section 23 is arranged perpendicularly to the support section 22 to increase the protective effect of the protective section 23 on the airbag 3.

[0061] Furthermore, refer to Figure 2 and Figure 3 The airbag 3 is equipped with an air valve 31, which is installed through the protective section 23.

[0062] It is understandable that the external air supply device can be connected to the airbag 3 through the valve 31.

[0063] Because the airbag 3 is equipped with a valve 31, it facilitates the inflation of the airbag 3 and ensures that the internal air pressure of the airbag 3 remains constant. Furthermore, since the valve 31 is installed through the protective section 23, the protective section 23 can be used to position the valve 31 to increase its stability. Additionally, the cooperation between the valve 31 and the protective section 23 can limit the movement of the airbag 3 to increase the connection stability between the airbag 3 and the support body 2.

[0064] This application does not specify the connection method between the airbag 3 and the support section 22. Preferably, refer to... Figure 2 and Figure 3 The support section 22 is provided with a connection hole, and the airbag 3 is provided with a connecting post 32 that passes through the connection hole.

[0065] It is understandable that multiple connecting holes are spaced apart along the length of the support section 22, and multiple connecting posts 32 are provided corresponding to the connecting holes, with each connecting post 32 and connecting hole corresponding to the other.

[0066] Since the support section 22 is provided with a connection hole, and the airbag 3 is provided with a connecting post 32 passing through the connection hole, the airbag 3 is connected to the support body 2, so as to facilitate the assembly of the airbag sealing device. On the other hand, it also facilitates the replacement of the airbag 3, so that the support body 2 can be reused, thereby reducing the cost of using the airbag sealing device.

[0067] Preferably, the central axis of the connecting hole is set perpendicular to the support section 22 to reduce the difficulty of installing the airbag 3.

[0068] Furthermore, refer to Figure 3 and Figure 4 The connecting column 32 is provided with a limiting hole, the central axis of the limiting hole is perpendicular to the central axis of the connecting column 32, and a limiting pin 321 is inserted through the limiting hole, and the limiting pin 321 is located on the side of the support section 22 away from the airbag 3.

[0069] It is understandable that the length of the limit pin 321 is greater than the length of the connecting post 32.

[0070] Since the central axis of the limiting hole is perpendicular to the central axis of the connecting column 32, and the limiting pin 321 is inserted in the limiting hole, and the limiting hole is located on the side of the support section 22 away from the airbag 3, the connecting column 32 can be limited by the cooperation of the limiting pin 321 and the stop of the support section 22, so as to avoid the connecting column 32 from separating from the connecting hole, thereby increasing the connection stability between the airbag 3 and the support body 2.

[0071] Furthermore, refer to Figure 4 and Figure 5 One end of the limiting pin 321 is provided with a fixing plate 322, and a fixing screw threaded to the support section 22 is passed through the fixing plate 322.

[0072] Understandably, the fixing plate 322 has a hole structure for the fixing screw to pass through.

[0073] Because a fixing piece 322 is provided at one end of the limiting pin 321, it is easy to insert the limiting pin 321 into the limiting hole, thereby reducing the difficulty of installing the limiting pin 321 and improving the assembly efficiency of the airbag sealing device. Furthermore, because a fixing screw threaded into the support section 22 is provided in the fixing piece 322, the fixing piece 322 can be fixedly connected to the support section 22 by the fixing screw, thereby increasing the stability of the limiting pin 321 and preventing the limiting pin 321 from separating from the limiting hole, thus increasing the connection stability between the airbag 3 and the support body 2.

[0074] Preferably, the fixing piece 322 is located at one end of the limiting pin 321, and the other end of the limiting pin 321 is provided with a chamfer to further facilitate the insertion of the limiting pin 321 into the limiting hole.

[0075] In other embodiments, the airbag 3 can also be fixedly connected to the support section 22 by adhesive.

[0076] In a preferred embodiment, refer to Figure 3 The connecting section 21 is provided with a receiving hole 211, and a magnet 212 is provided in the receiving hole 211.

[0077] It is understandable that since the sheet pile 1 is usually made of the metal material iron, the magnet 212 can be magnetically attracted to the sheet pile 1.

[0078] Since the receiving hole 211 is equipped with a magnet 212, when installing the airbag sealing device, the airbag sealing device can be placed on the steel sheet pile 1 first, so that the magnet 212 is magnetically attracted to the steel sheet pile 1, thereby temporarily fixing the airbag sealing device. Then, the support body 2 is fixed to the steel sheet pile 1 with screws, thereby facilitating the fixing of the airbag sealing device and improving the installation efficiency of the airbag sealing device.

[0079] Preferably, the receiving hole 211 is a stepped hole, and the shape of the magnet 212 is adapted to the stepped hole. The larger opening of the receiving hole 211 is located on the side of the connector closer to the support section 22, while the smaller opening of the receiving hole 211 is located on the side of the connector away from the support section 2. This can increase the connection stability between the magnet 212 and the receiving hole 211 and prevent the magnet 212 from separating from the receiving hole 211 due to magnetic attraction with the sheet pile 1.

[0080] It should be noted that, due to the different depths of the foundation pit, the length of the sheet pile 1 exposed at the bottom of the foundation pit is different. Therefore, when producing the airbag sealing device in this application, various lengths and models of airbag sealing devices can be produced to meet the different usage conditions of the sheet pile 1 as much as possible.

[0081] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0082] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0083] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A device for sealing the joints of sheet piles in foundation pits of silty sand geological structures using airbags, characterized in that... The device includes a support body (2), an airbag (3), and an elastic sealing body (4). The support body (2) has a connecting section (21) and a support section (22) arranged at an angle to the connecting section (21). The connecting section (21) is used for installation on the sheet pile (1). The airbag (3) is disposed on the support section (22) so that the support section (22) can support the airbag (3). The elastic sealing body (4) is connected to the airbag (3) and is located on the side of the airbag (3) away from the support section (22).

2. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 1, characterized in that, The elastic seal (4) has a sealing section (41) whose width gradually decreases in the direction away from the airbag (3).

3. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 2, characterized in that, The elastic sealing body (4) further includes a force-bearing section (42), the width of which is greater than the width of the sealing section (41) and greater than or equal to the width of the airbag (3) on the side close to the elastic sealing body (4).

4. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 2, characterized in that, The sealing section (41) has a deformation cavity (411) inside, and the end of the sealing section (41) has an exhaust hole (412) communicating with the deformation cavity (411).

5. A sheet pile joint airbag sealing device for foundation pits in silty sand geological structures according to any one of claims 1-4, characterized in that, The support (2) also includes a protective section (23) located outside the airbag (3), the width of which is less than the distance between the support section (22) and the elastic seal (4) when the airbag (3) is fully inflated.

6. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 5, characterized in that, The airbag (3) is provided with an air valve (31), which is installed through the protective section (23).

7. A sheet pile joint airbag sealing device for foundation pits in silty sand geological structures according to any one of claims 1-4, characterized in that, The support section (22) is provided with a connecting hole, and the airbag (3) is provided with a connecting post (32) passing through the connecting hole.

8. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 7, characterized in that, The connecting column (32) is provided with a limiting hole, the central axis of the limiting hole is perpendicular to the central axis of the connecting column (32), a limiting pin (321) is provided in the limiting hole, and the limiting pin (321) is located on the side of the support section (22) away from the airbag (3).

9. The airbag sealing device for steel sheet pile joints in foundation pits of silty sand geological structures according to claim 8, characterized in that, One end of the limiting pin (321) is provided with a fixing piece (322), and a fixing screw threaded to the support section (22) is provided in the fixing piece (322).

10. A sheet pile joint airbag sealing device for foundation pits in silty sand geological structures according to any one of claims 1-4, characterized in that, The connecting section (21) is provided with a receiving hole (211), and a magnet (212) is provided in the receiving hole (211).

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