Waterproof structure device for integrated structure joint of pipe curtain tunnel

Abstract

The application relates to a waterproof structure device for a pipe curtain tunnel integrated structure joint, and relates to the technical field of tunnel engineering, which comprises a combination unit and a steel pipe joint, the combination unit is connected between two adjacent steel pipe joints, the combination unit comprises a cladding piece, a plug-in piece, a positioning piece and a receiving piece, the cladding piece and the receiving piece are installed on one side of the steel pipe joint, the receiving piece is arranged on both sides of the cladding piece, the plug-in piece and the positioning piece are arranged on the other side of the steel pipe joint, the positioning piece is arranged on both sides of the plug-in piece, the plug-in piece is inserted into the cladding piece, the positioning piece is arranged in the receiving piece, and a plurality of grouting holes are formed in the positioning piece and the plug-in piece. The application has multiple waterproof barriers, so that the tunnel joint can effectively resist the penetration of underground water when facing different water pressures and complex geological conditions, and the effect of greatly reducing the risk of tunnel leakage is achieved.

Description

Technical Field

[0001] This application relates to the technical field of tunnel engineering, and in particular to a waterproof construction device for an integrated structural joint of a pipe-jacking tunnel. Background Technology

[0002] With the rapid development of cities and the continuous deepening of urban underground space development, pipe-jacking tunnels, as an important form of underground engineering, play a crucial role in crossing existing roads, railways, rivers, and other obstacles. Integrated pipe-jacking tunnel structures, with their advantages of minimal environmental impact during construction and effective utilization of underground space, are widely used in urban subway and utility tunnel projects.

[0003] In integrated pipe-jacking tunnel structures, the joints are a critical component, and their waterproofing performance directly affects the safe and stable operation of the tunnel. Early pipe-jacking tunnel joints often used simple sealing materials, such as ordinary rubber gaskets or sealants. However, in practical applications, these materials are prone to aging and failure under the influence of long-term groundwater erosion, temperature changes, and the deformation of the tunnel structure itself. Aged rubber gaskets lose their elasticity and cannot tightly seal the joint gaps, while sealants may crack and peel off, leading to groundwater seepage into the tunnel. This not only corrodes the structural steel reinforcement inside the tunnel, reducing structural strength, but may also cause water accumulation within the tunnel, affecting its normal use and increasing future maintenance costs.

[0004] Regarding the aforementioned technologies, the inventors believe that the use of simple sealing materials in the joints of pipe-jacking tunnels makes them prone to aging and failure under the influence of long-term groundwater erosion, temperature changes, and deformation of the tunnel structure itself, resulting in groundwater leakage into the tunnel interior. Utility Model Content

[0005] To address the problem that simple sealing materials used in pipe-jacking tunnel joints are prone to aging and failure under the influence of long-term groundwater erosion, temperature changes, and the deformation of the tunnel structure itself, leading to groundwater leakage into the tunnel interior, this application provides a waterproof construction device for an integrated pipe-jacking tunnel joint.

[0006] This application provides a waterproof structural joint device for integrated pipe-jacking tunnels, which adopts the following technical solution: A waterproof structural joint device for an integrated pipe-jacking tunnel includes a combined unit and steel pipe sections. The combined unit connects two adjacent steel pipe sections. The combined unit includes a covering, a plug, a positioning component, and a receiving component. The covering and receiving components are installed on one side of the steel pipe section. The receiving components are provided on both sides of the covering. The plug and positioning components are provided on the other side of the steel pipe section. The positioning components are installed on both sides of the plug. The plug is inserted into the covering, and the positioning component passes through the receiving component. Multiple grouting holes are provided on both the positioning component and the plug.

[0007] By adopting the above technical solutions, the combined unit constructs an effective connection and waterproof structure between adjacent steel pipe sections. The cooperation between the covering and the plug-in parts provides basic structural stability for the joint. The collaboration between the positioning and receiving parts accurately determines the position of each component, ensuring the accuracy of installation. The grouting holes opened on the positioning and plug-in parts provide a channel for subsequent injection of grout to further enhance the waterproof performance. Overall, the waterproof capability and structural reliability of the pipe-jacking tunnel joint are improved, effectively reducing the threat of groundwater leakage to the tunnel structure.

[0008] Optionally, the covering includes a first covering plate and a second covering plate, with one end of the first covering plate and the second covering plate both installed on the side of the steel pipe section, and the other end of the first covering plate and the other end of the second covering plate forming an insertion interface and an insertion space for the insertion of the connector.

[0009] By adopting the above technical solution, the insertion interface and insertion space formed by the first and second covering plates provide a clear path and stable space for the insertion of the connector, enabling the connector to be accurately inserted into the covering, ensuring a tight fit between the two. At the same time, the existence of the insertion interface and insertion space can also buffer the impact of external forces on the joint to a certain extent, improving the joint's seismic performance and stability.

[0010] Optionally, the connector includes a support plate and a connector plate. One end of the support plate is installed on the side of the steel pipe section, and the other end is connected to the connector plate. The support plate is inserted into the connector interface, and the connector plate is inserted into the connector space.

[0011] By adopting the above technical solution, the combination of the support plate and the plug plate achieves precise docking with the covering component. The support plate is inserted into the plug interface, which plays a role in initial positioning and support, ensuring the smooth progress of the plugging process. The plug plate is inserted into the plugging space, which further enhances the tightness of the connection between the two, so that when the joint is subjected to various external forces, the force can be evenly distributed to each component, thereby improving the load-bearing capacity and stability of the joint.

[0012] Optionally, the cross-sectional shape of the plug-in plate is circular.

[0013] By adopting the above technical solution, when inserting the cover into the insertion space, the circular cross-section can achieve a more uniform fit with the insertion space, reducing the generation of gaps and thus improving waterproof performance. When subjected to force, the circular cross-section can distribute stress more evenly, avoiding structural damage caused by stress concentration and enhancing the structural strength and durability of the insertion plate.

[0014] Optionally, the receiving component includes a first receiving plate and a second receiving plate, with one end of both the first receiving plate and the second receiving plate installed on one side of the steel pipe section, and the positioning component located between the first receiving plate and the second receiving plate.

[0015] By adopting the above technical solution, the first and second receiving plates provide stable support and precise positioning for the positioning component. The positioning component is located between the two plates, which can effectively limit its lateral and longitudinal displacement, ensure the accuracy of positioning, and evenly transfer the force borne by the positioning component to the steel pipe section, thereby enhancing the overall stability of the joint.

[0016] Optionally, the height of the positioning element is less than the distance between the first receiving plate and the second receiving plate.

[0017] By adopting the above technical solution, the height of the positioning component is less than the distance between the first and second receiving plates, providing a certain space for the installation and adjustment of the positioning component. During the installation process, construction personnel can more easily place the positioning component between the two and make fine adjustments to ensure its accurate position. During tunnel operation, when the joint is subjected to certain deformation, the positioning component has a certain amount of room for movement, which can buffer some stress and avoid damage due to excessive compression, thereby improving the adaptability and reliability of the joint.

[0018] Optionally, both the outer surfaces of the covering and the receiving component are covered with a sealing layer.

[0019] By adopting the above technical solution, the sealing layer provides additional waterproof protection for the covering and receiving parts. The sealing layer can fill the tiny pores and gaps on the surface of the parts, prevent the infiltration of groundwater, and further enhance the waterproof performance of the joint. The sealing layer can also play an isolation role, preventing external corrosive substances from eroding the joint parts and extending the service life of the parts.

[0020] Optionally, one end of the positioning member and the plug-in member is closed and the other end is open, and multiple grouting holes are evenly distributed on the positioning member and the plug-in member.

[0021] By adopting the above technical solution, the positioning component and the plug-in component are designed with one end closed and the other end open, which facilitates the grouting operation. The closed end can prevent the grout from leaking and ensure that the grout can be concentrated inside the component. The open end provides a channel for the connection of the grouting equipment, making it convenient to inject the grout. The evenly distributed grouting holes allow the grout to fill the gaps inside the component evenly, forming a continuous and complete sealing layer, which improves the waterproof effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This integrated waterproof joint structure for pipe-jacking tunnels forms multiple waterproof barriers through the coordinated work of various components in the combined unit, including the nesting of the covering and plug-in parts, the sealing of the positioning and receiving parts, and the filling of the grouting holes with sealing material. This allows the tunnel joint to effectively resist groundwater infiltration under different water pressures and complex geological conditions, greatly reducing the risk of tunnel leakage and ensuring the dryness of the tunnel's internal environment and the normal operation of equipment. At the same time, it can withstand the pressure from the surrounding soil, internal loads, and various external forces during construction and operation, ensuring the safety and stability of the tunnel structure. The closed end of the connector prevents the grout from flowing out of the connector end, concentrating the grout in the gap between the connector and the covering, thus enhancing waterproofing and sealing. At the same time, the closed end prevents groundwater from seeping in from the connector end, protecting the internal structure of the tunnel. The open end of the connector is used to connect the grouting equipment, facilitating the injection of polyurea grout. During construction, the open end can also serve as an observation port, allowing construction personnel to check the grouting status and ensure that the grout is fully filled. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the waterproof construction device for the integrated pipe-jacking tunnel joint according to an embodiment of this application; Figure 2 This is a schematic diagram of the plug plate in the waterproof construction device for the integrated pipe-jacking tunnel structure joint in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures: 1. Assembly unit; 11. Covering component; 111. First covering plate; 112. Second covering plate; 12. Connector; 121. Support plate; 122. Connector plate; 123. Grouting hole; 13. Positioning component; 14. Receiving component; 141. First receiving plate; 142. Second receiving plate; 2. Steel pipe section. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical 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.

[0028] The following is in conjunction with the appendix Figure 1 and Figure 2 This application will be described in further detail.

[0029] This application discloses a waterproof structural device for an integrated joint of a pipe-jacking tunnel, referring to... Figure 1 and Figure 2 The waterproof construction device for the integrated structure joint of the pipe curtain tunnel includes a combined unit 1 and a steel pipe section 2. The combined unit 1 connects two adjacent steel pipe sections 2. The combined unit 1 includes a covering 11, a plug-in 12, a positioning 13, and a receiving 14. The covering 11 and the receiving 14 are installed on one side of the steel pipe section 2. The receiving 14 is provided on both sides of the covering 11. The plug-in 12 and the positioning 13 are provided on the other side of the steel pipe section. The positioning 13 is installed on both sides of the plug-in 12. The plug-in 12 is inserted into the covering 11, and the positioning 13 is inserted into the receiving 14. Multiple grouting holes 123 are opened on the positioning 13 and the plug-in 12.

[0030] In this integrated waterproof structure device for pipe-jacking tunnel joints, the covering component 11 acts as a robust outer shell, encasing the connector 12. The covering component 11 physically constructs a basic waterproof barrier, directly preventing groundwater from intruding from the side of the joint. Due to its structural strength, the covering component 11 provides crucial compressive support for the entire joint when subjected to pressure from the surrounding soil and internal tunnel loads, effectively dispersing and resisting external forces, significantly reducing the risk of groundwater leakage and enhancing the joint's waterproof performance. Simultaneously, it ensures the stability of the joint under complex stress environments, reducing deformation or damage caused by external forces and ensuring the integrity of the tunnel structure.

[0031] The connector 12 is inserted into the covering 11 and mates with it, further reducing the gap between them and enhancing the waterproofing effect. Furthermore, multiple injection holes 123 on its surface provide channels for injecting waterproof sealant, filling any tiny gaps. Structurally, it interacts with the covering 11, enhancing the overall connection strength of the joint. Through nesting with the covering 11 and sealing the injection holes 123, the waterproofing performance of the joint is improved, reducing the risk of leakage. Moreover, it strengthens the connection between the various parts of the joint, improving its compressive and deformation resistance, ensuring normal operation of the joint under various loads.

[0032] The positioning element 13 accurately determines the relative position of adjacent steel pipe sections 2, ensuring that the covering element 11 and the plug-in element 12 can be accurately aligned. The grouting hole 123 in the positioning element 13 is used to inject sealing material to seal the gap between it and the receiving element 14. Mechanically, the positioning element 13 can withstand a certain shear force, enhancing the structural strength and stability of the joint, significantly improving the installation accuracy of the joint, and preventing installation deviations from affecting waterproofing and structural performance. Grouting sealing and shear force resistance not only effectively prevent groundwater leakage but also improve the pressure-bearing capacity of the joint, ensuring the stability of the tunnel joint during long-term use.

[0033] The receiving component 14 is fixed on the steel pipe section 2, providing a stable support for the positioning component 13. It can withstand the force transmitted from the positioning component 13 and distribute these forces evenly on the steel pipe section 2, ensuring the stability of the position of the positioning component 13, thereby maintaining the accuracy of the entire joint connection. This is crucial for ensuring the waterproof performance and structural stability of the joint, and helps to improve the safety of the tunnel under complex geological conditions.

[0034] The grouting holes 123 on the positioning component 13 and the connector 12 are key channels for injecting waterproof sealing material. Through these grouting holes 123, highly elastic and highly impermeable sealing material is injected into the gaps between the components, forming an additional waterproof sealing layer. Simultaneously, after the sealing material cures, it enhances the adhesion between the components, improves the waterproof performance of the joint, effectively fills the gaps between the components, and prevents groundwater leakage. The enhanced adhesion further improves the structural strength and pressure-bearing capacity of the joint, enabling it to better withstand various external forces and extending the service life of the tunnel.

[0035] This integrated waterproof joint construction device for pipe-jacking tunnels creates a highly efficient and stable waterproof connection structure between adjacent steel pipe sections 2. Through the coordinated work of the components in the combined unit 1, the nesting of the covering part 11 and the plug part 12, the sealing of the positioning part 13 and the receiving part 14, and the filling of the grouting hole 123 with sealing material, multiple waterproof barriers are formed. This allows the tunnel joint to effectively resist the infiltration of groundwater when facing different water pressures and complex geological conditions, greatly reducing the risk of tunnel leakage and ensuring the dryness of the tunnel's internal environment and the normal operation of equipment. At the same time, it can withstand the pressure from the surrounding soil, internal loads, and various external forces during construction and operation, ensuring the safety and stability of the tunnel structure.

[0036] The covering component 11, the plug-in component 12, the positioning component 13, and the receiving component 14 together form a robust structural system capable of effectively withstanding various external forces. The grouting holes 123 enhance the connection strength between the components, giving the joint excellent compressive and shear resistance, reducing structural deformation and damage caused by external forces, and promoting mutual improvement in waterproofing and pressure-bearing performance. This collaborative working method allows the joint to maintain good performance even under adverse factors such as long-term groundwater erosion, temperature changes, and deformation of the tunnel structure itself, reducing maintenance costs and safety hazards, and providing a strong guarantee for the long-term stable operation of the tunnel.

[0037] The covering component 11 includes a first covering plate 111 and a second covering plate 112. One end of each of the first covering plate 111 and the second covering plate 112 is installed on the side of the steel pipe section 2. The other end of the first covering plate 111 and the other end of the second covering plate 112 form an insertion interface and insertion space for the insertion component 12 to be inserted. The first covering plate 111 and the second covering plate 112 are securely installed on the side of the steel pipe section 2, which can tightly connect the covering component 11 and the steel pipe section 2 into a whole structure. This connection method allows the covering component 11 to work together with the steel pipe section 2 to jointly bear external loads and pressures. Fixing through welding, bolting, and other methods ensures the reliability of the connection, prevents loosening during tunnel construction and operation, and ensures the stability of the overall structure.

[0038] The insertion interface at the other end of the first covering plate 111 and the second covering plate 112 serves as the entry point for the connector 12. The insertion interface guides the connector 12 to be accurately inserted into the predetermined position, ensuring installation accuracy and convenience. A suitable insertion interface size ensures that the connector 12 is neither too loose, leading to a decrease in waterproofing and structural performance, nor too tight, making installation difficult. Furthermore, the edges of the insertion interface can be specially treated, such as by setting chamfers or sealing grooves, to further improve the fitting accuracy and waterproofing performance with the connector 12.

[0039] The insertion space provides a accommodating space for the connector 12, forming a tight mating structure between them. The size and shape of the insertion space are adapted to the connector 12, ensuring smooth insertion of the connector 12 while minimizing the gap between them, thereby reducing the channels for groundwater leakage. Moreover, after insertion, the tight contact between the two can enhance the structural strength of the joint, jointly resisting external pressure and deformation.

[0040] By forming an interface and a connection space, which fits tightly with the connector 12, the seepage path of groundwater is effectively blocked. With the use of sealing materials, such as setting a sealing strip at the edge of the interface or filling the connection space with sealant, the waterproof performance is further enhanced, the risk of tunnel leakage is reduced, and the dryness of the tunnel interior environment and the normal operation of the equipment are ensured.

[0041] The connection between the steel pipe section 2 and the connector 12 makes the cladding 11 an important component of the joint structure. It can effectively distribute and withstand external pressure, enhancing the overall rigidity and load-bearing capacity of the joint. When the tunnel is subjected to various external forces, the cladding 11 can deform in conjunction with other components, reducing stress concentration, improving the stability and reliability of the joint, and extending the service life of the tunnel.

[0042] The connector 12 includes a support plate 121 and a connector plate 122. One end of the support plate 121 is installed on the side of the steel pipe section 2, and the other end is connected to the connector plate 122. The support plate 121 is inserted into the connector interface, and the connector plate 122 is inserted into the connector space. As a component connecting the steel pipe section 2 and the connector plate 122, the support plate 121 acts as a bridge. One end is firmly installed on the side of the steel pipe section 2, ensuring that the connector 12 and the steel pipe section 2 are tightly connected and become a whole. The part inserted into the connector interface is not only used to position the connector plate 122, but also can withstand certain shear and tensile forces through its cooperation with the connector interface. During installation, the support plate 121 guides the connector plate 122 to be accurately inserted into the connector space of the covering component 11, ensuring installation accuracy. In addition, the support plate 121 can also enhance the overall structural strength of the connector 12, making it less prone to deformation when subjected to external forces.

[0043] The plug-in plate 122 contacts the second covering plate 112 and the first covering plate 111 of the covering component 11. The plug-in plate 122 further reduces the gap at the joint, enhancing waterproofing performance. Structurally, the plug-in plate 122 and the covering component 11 cooperate to jointly bear the pressure from the surrounding soil and the load inside the tunnel. In addition, if the plug-in plate 122 is provided with grouting holes 123, it can be used to inject sealing material to fill the tiny gaps between itself and the covering component 11, further improving the waterproofing effect.

[0044] The plug-in plate 122 has a circular cross-section. This circular cross-section allows for a tighter and more uniform fit with the insertion space of the covering component 11. Compared to other shapes, the circular shape makes it easier to maintain a consistent distance between its circumference and the inner wall of the insertion space during insertion, effectively reducing gaps. Under groundwater pressure, this tight fit significantly reduces the risk of water leakage, providing a good waterproof barrier in different directions, preventing concentrated leakage points, and ensuring stable and reliable waterproofing performance at the tunnel joint.

[0045] A sealing material (such as a rubber sealing ring) is placed between the plug plate 122 and the plug space. The circular cross-section allows the pressure to be distributed more evenly on the circumference when the sealing material is compressed, enabling the sealing material to fully exert its sealing performance, better fill tiny gaps, and effectively prevent groundwater seepage. Moreover, the circular geometry can still maintain good sealing performance when subjected to slight deformation by external forces, making it more adaptable.

[0046] When the tunnel joint is subjected to external forces such as pressure from the surrounding soil and loads inside the tunnel, the circular cross-section of the insertion plate 122 can evenly distribute the stress across the entire cross-section. Compared with square or other polygonal cross-sections, the circle does not have stress concentration points at the corners, avoiding the risk of structural damage caused by stress concentration. This allows the insertion plate 122 to work more stably under greater external forces, and it is less prone to cracks and fractures, effectively enhancing the overall structural strength of the joint. The circular cross-section has good compressive strength, and its structural stability is high when subjected to axial pressure. During the construction and operation of the pipe-jacking tunnel, if situations such as soil settlement above the tunnel occur, the insertion plate 122 can better withstand the pressure due to its circular cross-section, transferring the pressure to the covering component 11 and the steel pipe section 2, jointly resisting external forces, ensuring the structural integrity of the joint, and ensuring the safe and stable operation of the tunnel.

[0047] The receiving component 14 includes a first receiving plate 141 and a second receiving plate 142. One end of each of the first receiving plate 141 and the second receiving plate 142 is installed on one side of the steel pipe section 2. The positioning component 13 is located between the first receiving plate 141 and the second receiving plate 142. The mounting ends of the first receiving plate 141 and the second receiving plate 142 are firmly installed on the side of the steel pipe section 2, tightly connecting the receiving component 14 to the steel pipe section 2 to form a stable whole. Through reliable connection methods such as welding and bolting, it is ensured that the receiving component 14 will not detach from the steel pipe section 2 during tunnel construction and operation, providing a solid foundation for the subsequent connection of the positioning component 13 and the stable operation of the entire joint. This connection method can effectively transfer the force transmitted from the positioning component 13 to the steel pipe section 2, enabling each component to bear the force collaboratively and enhancing the overall stability of the joint.

[0048] The space between the first receiving plate 141 and the second receiving plate 142 is used to accommodate the positioning member 13, providing precise positioning and stable support for the positioning member 13. These spaces limit the movement range of the positioning member 13, ensuring that it maintains the correct position during operation, thereby guaranteeing the relative positional accuracy between adjacent steel pipe sections 2. This is crucial for the accurate fit between the covering member 11 and the insertion member 12, effectively preventing reduced waterproofing performance and structural instability caused by positioning deviations.

[0049] When the positioning element 13 is subjected to forces from various directions (such as shear force, tension force, etc.), the first receiving plate 141 and the second receiving plate 142 can bear these forces and distribute them evenly onto the steel pipe section 2. Since the positioning element 13 plays a key connecting and positioning role in the joint, its stress situation is complex. The force-bearing and force-dispersing function of the receiving element 14 can protect the positioning element 13 from being damaged by excessive forces, and at the same time enhance the load-bearing capacity of the entire joint, ensuring that the joint can work normally under various loads.

[0050] By precisely positioning the positioning component 13, the receiving component 14 ensures the connection accuracy between adjacent steel pipe sections 2, enabling the covering component 11 and the plug-in component 12 to fit tightly, thereby improving the waterproof performance of the joint. Accurate connection also reduces local stress concentration caused by misalignment, improving the overall structural performance of the joint. The supporting and force-transferring effect of the receiving component 14 on the positioning component 13 allows all components to work collaboratively and share the load when subjected to various external forces, greatly enhancing the stability and reliability of the joint, reducing the risk of joint damage caused by external forces, and ensuring the safe and stable operation of the tunnel during long-term use.

[0051] The height of the positioning component 13 is less than the distance between the first receiving plate 141 and the second receiving plate 142, and the height of the positioning component 13 is less than the spacing between the receiving plates, providing operating space for its own installation and adjustment. During installation, construction personnel can more easily place the positioning component 13 between the first receiving plate 141 and the second receiving plate 142, avoiding installation difficulties caused by limited space and improving construction efficiency. During tunnel operation, when minor deformations occur in the structure, the positioning component 13 has a certain amount of room for movement between the receiving plates, buffering some stress, reducing the risk of its own damage, and ensuring the continued operation of the precise positioning function.

[0052] First receiving plate 141 and second receiving plate 142: The large gap between the receiving plates accommodates the positioning element 13, and sealant can be filled around the positioning element 13 to enhance waterproof performance. Moreover, when subjected to external forces, the receiving plates can disperse the force transmitted from the positioning element 13, and through the connection with the steel pipe section 2, the force is transmitted to the entire structure, enhancing the stability of the joint.

[0053] The space created by the height difference can be filled with sealing materials, such as water-swellable sealing strips. These sealing materials can effectively fill the gap between the positioning component 13 and the receiving plate, forming a reliable waterproof barrier and reducing the risk of groundwater seepage into the tunnel.

[0054] Both the outer surfaces of the covering component 11 and the receiving component 14 are covered with a sealing layer. In environments rich in groundwater, the sealing layer can further prevent moisture from entering the tunnel through the tiny pores or defects of the covering component 11. It fits tightly against the surface of the covering component 11, filling any unevenness and effectively reducing the channels for groundwater seepage. For example, in groundwater rich in corrosive substances, the sealing layer can prevent these substances from contacting the covering component 11, avoiding corrosion of the covering component 11, thereby extending its service life and ensuring the waterproof effect of the joint.

[0055] In addition to waterproofing, the sealing layer also isolates external impurities such as air and dust, reducing their erosion and wear on the covering component 11. During tunnel construction, the sealing layer prevents particulate matter from adhering to the surface of the covering component 11, avoiding damage caused by friction or chemical action. Maintaining the structural integrity of the covering component 11 during long-term use helps maintain the stability and load-bearing capacity of the joint.

[0056] The sealing layer on the outer surface of the receiving component 14 is used to prevent moisture from seeping in from the connection between the receiving component 14 and surrounding components. The receiving component 14 is connected to components such as the steel pipe section 2 and the positioning component 13. Gaps are prone to appear at the connection. The sealing layer can fill these gaps and prevent groundwater from seeping in along these gaps, thereby protecting the internal structure of the receiving component 14 and other components connected to it. For example, in a high water pressure environment, the sealing layer can effectively resist water pressure and prevent moisture from entering the connection area between the receiving component 14 and the positioning component 13, avoiding inaccurate positioning or loose connection due to water erosion.

[0057] The sealing layer can reduce the corrosion and oxidation of the connection parts of the connector 14. In the humid underground environment, the connection parts of the metal connector 14 are prone to rust. The presence of the sealing layer can isolate moisture and oxygen, reduce the risk of rust, ensure that the connection between the connector 14 and other components is firm and reliable, and ensure that the connector 14 can continue to effectively perform its positioning and load-bearing functions during the long-term use of the pipe jacking tunnel.

[0058] The cladding component 11, connector 12, positioning component 13, and receiving component 14 are all welded to the steel pipe section 2. Waterstop strips are installed around the welds. The cladding component 11 is welded to the steel pipe section 2, forming a stable whole. The weld provides a reliable connection, ensuring that the cladding component 11 will not detach from the steel pipe section 2 under external pressure and during waterproofing. The welds and surrounding waterstop strips further enhance the waterproofing performance, preventing groundwater from seeping into the connection between the cladding component 11 and the steel pipe section 2, avoiding corrosion of the steel pipe section 2, and extending its service life.

[0059] Welding ensures that the connector 12 is tightly connected to the steel pipe section 2, enabling the connector 12 to effectively transmit force and cooperate with the covering 11 to achieve waterproofing and structural stability. The waterstop strip prevents leakage at the weld joint, ensuring the waterproof effect of the joint and reducing the risk of rust and reduced strength at the weld due to water intrusion, thus ensuring the reliability of the connection between the connector 12 and the steel pipe section 2.

[0060] The welding to the steel pipe section 2 provides a stable installation base for the positioning component 13, ensuring its accurate positioning function. The water-stop strip around the weld prevents moisture from penetrating through the connection between the positioning component 13 and the steel pipe section 2, avoiding the impact of moisture on the accuracy and stability of the positioning component 13, ensuring the relative positions of the joint components are fixed, and improving the overall structural performance of the joint.

[0061] Welding achieves a firm connection between the connector 14 and the steel pipe section 2, enabling it to stably support the positioning component 13 and transmit force. The waterstop strip prevents groundwater from entering through the weld gap between the connector 14 and the steel pipe section 2, protecting the welded area and ensuring that the load-bearing capacity and positioning function of the connector 14 are not affected, thus maintaining the stability of the joint.

[0062] One end of the positioning component 13 and the plug-in component 12 is closed, and the other end is open. Multiple grouting holes 123 are evenly distributed on the positioning component 13 and the plug-in component 12. The grouting liquid is polyurea grouting liquid.

[0063] The closed end of the positioning component 13 prevents the grout from leaking from the end of the positioning component 13, ensuring that the grout flows along the expected path inside the positioning component 13, concentrating to fill the gap between the positioning component 13 and the receiving component 14, and enhancing the sealing effect. When subjected to external forces, the closed end can also act as a barrier, preventing external impurities from entering the interior of the positioning component 13 and affecting its performance, thus protecting the structural integrity of the positioning component 13.

[0064] The open end of the positioning component 13 facilitates grouting operations. Construction personnel can connect the grouting equipment to the positioning component 13 through the open end to smoothly inject polyurea grout. At the same time, the open end design also facilitates cleaning and inspection of the interior of the positioning component 13 during construction, ensuring that there are no foreign objects inside the positioning component 13 and guaranteeing the grouting effect.

[0065] Multiple evenly distributed grouting holes 123 allow the polyurea grout to be evenly distributed in the contact area between the positioning member 13 and the receiving member 14, filling gaps and improving sealing performance. The even distribution of grouting holes 123 also enhances the adhesion between the positioning member 13 and the receiving member 14, making the connection between the two tighter, so that they can jointly bear external forces and improve the structural stability of the joint.

[0066] refer to Figure 2 The closed end of the connector 12 prevents the grout from flowing out of the end of the connector 12, causing the grout to concentrate in the gap between the connector 12 and the covering 11, thus enhancing the waterproofing and sealing effect. At the same time, the closed end can prevent groundwater from seeping in from the end of the connector 12, protecting the internal structure of the tunnel.

[0067] The open end of the connector 12 is used to connect to the grouting equipment, facilitating the injection of polyurea grout. During construction, the open end can also serve as an observation port, allowing construction personnel to check the grouting process and ensure that the grout is fully filled.

[0068] The evenly distributed grouting holes 123 ensure that the polyurea grout spreads uniformly between the connector 12 and the covering 11, filling the gaps and improving waterproofing performance. After the grout cures, it enhances the connection strength between the connector 12 and the covering 11, enabling the joint to better withstand external forces and ensuring the stability of the tunnel structure.

[0069] Polyurea grout has excellent adhesion, elasticity, and waterproofing properties. Injecting polyurea grout into the positioning component 13 and the connector 12 fills gaps, forming a reliable sealing layer that effectively prevents groundwater leakage. Its high elasticity can adapt to minor deformations of the tunnel structure, ensuring the sealing effect remains unaffected. Furthermore, polyurea grout has strong durability, maintaining its waterproofing performance for a long time and reducing tunnel maintenance costs.

[0070] The implementation process of the waterproof structural joint device for an integrated pipe-jacking tunnel according to an embodiment of this application is as follows: According to the design requirements of the pipe jacking tunnel, prepare materials and construction equipment of the corresponding specifications, including steel pipe section 2, covering component 11, plug-in component 12, positioning component 13, receiving component 14, polyurea grout, and waterstop strips. Conduct quality inspections on each component to ensure that its specifications, dimensions, and performance meet the requirements. At the construction site, clean the surface of steel pipe section 2 to remove oil, rust, and other impurities, preparing for subsequent installation.

[0071] The cladding component 11 and the receiving component 14 are welded to one side of the steel pipe section 2. According to the design position, the first receiving plate 141 and the second receiving plate 142 are installed on the side of the steel pipe section 2. On the other side of the steel pipe section 2, the plug-in component 12 and the positioning component 13 are welded, ensuring accurate positioning and proper fit with the cladding component 11 and the receiving component 14. After welding, a waterstop strip is pasted onto the weld and its surrounding area, ensuring the waterstop strip is firmly attached and covers the entire weld area.

[0072] Insert the positioning piece 13 between the first receiving plate 141 and the second receiving plate 142, adjust its position, and ensure the fitting accuracy between the positioning piece 13 and the receiving piece 14. Align the insertion piece 12 with the insertion interface of the covering piece 11 and slowly insert it into the insertion space to ensure a tight fit between the two. During the insertion process, carefully check the connection of each component to ensure there is no misalignment or excessive gap.

[0073] The grouting equipment is connected through the open ends of the positioning component 13 and the plug-in component 12, and the polyurea grout is injected into the grouting hole 123. During the grouting process, the grouting pressure and grouting volume are controlled to ensure that the grout evenly fills the gaps between the components. The grouting situation is observed to ensure that the grout flows out evenly from each grouting hole 123 without blockage or leakage. After the grouting is completed, the polyurea grout is allowed to cure and form a sealing layer.

[0074] Conduct a quality inspection of the installed waterproofing structure, checking that all connections are secure, waterstop strips are properly adhered, and grouting is complete. Use pressure testing or other methods to verify that the waterproofing performance of the joints meets design requirements. If any problems are found, rectify them promptly to ensure the quality and performance of the waterproofing structure.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof structural joint device for an integrated pipe-jacking tunnel, characterized in that: The assembly includes a combination unit (1) and a steel pipe section (2). The combination unit (1) is connected between two adjacent steel pipe sections (2). The combination unit (1) includes a covering (11), a plug-in (12), a positioning part (13), and a receiving part (14). The covering (11) and the receiving part (14) are installed on one side of the steel pipe section (2). The receiving part (14) is provided on both sides of the covering (11). The plug-in (12) and the positioning part (13) are provided on the other side of the steel pipe section (2). The positioning part (13) is installed on both sides of the plug-in (12). The plug-in (12) is inserted into the covering (11). The positioning part (13) is inserted into the receiving part (14). The positioning part (13) and the plug-in (12) are provided with multiple grouting holes (123).

2. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 1, characterized in that: The covering (11) includes a first covering plate (111) and a second covering plate (112). One end of the first covering plate (111) and the second covering plate (112) are both installed on the side of the steel pipe section (2). The other end of the first covering plate (111) and the other end of the second covering plate (112) form an insertion interface and an insertion space for the insertion of the connector (12).

3. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 2, characterized in that: The connector (12) includes a support plate (121) and a connector plate (122). One end of the support plate (121) is installed on the side of the steel pipe section (2), and the other end is connected to the connector plate (122). The support plate (121) is inserted into the connector, and the connector plate (122) is inserted into the connector space.

4. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 3, characterized in that: The cross-sectional shape of the plug-in plate (122) is circular.

5. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 1, characterized in that: The receiving component (14) includes a first receiving plate (141) and a second receiving plate (142). One end of the first receiving plate (141) and the second receiving plate (142) are both installed on one side of the steel pipe section (2). The positioning component (13) is located between the first receiving plate (141) and the second receiving plate (142).

6. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 5, characterized in that: The height of the positioning element (13) is less than the distance between the first receiving plate (141) and the second receiving plate (142).

7. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 1, characterized in that: The outer surfaces of both the covering (11) and the receiving (14) are covered with a sealing layer.

8. The waterproof structural joint device for integrated pipe-jacking tunnels according to claim 1, characterized in that: One end of the positioning member (13) and the plug-in member (12) is closed, and the other end is open. Multiple grouting holes (123) are evenly distributed on the positioning member (13) and the plug-in member (12).

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