Joint structure suitable for assembled open-cut tunnel

Abstract

The utility model discloses a joint structure suitable for assembly type open cut tunnel, include: first joint, have first butt joint end, and first butt joint end is equipped with butt joint groove, second joint has second butt joint end, and second butt joint end is equipped with butt joint, and second butt joint end is butt jointed with first butt joint end and makes butt joint stretch into butt joint groove, and the outer wall of butt joint and the groove wall of butt joint groove form the slurry channel between, and the slurry channel is equipped with sealed slurry, two first sealing members, two first sealing members are all sealed and set up between first butt joint end and second butt joint end, and two first sealing members are located two ends of slurry channel respectively, two second sealing members, two second sealing members are all sealed and set up between first butt joint end and second butt joint end, one second sealing member is set up in one first sealing member side away from slurry channel, and the second sealing member of another side is set up in another first sealing member side away from slurry channel.

Description

Technical Field

[0001] This utility model relates to the field of tunnel transportation technology, and in particular to a joint structure suitable for prefabricated open-cut tunnels. Background Technology

[0002] As a crucial infrastructure for alleviating traffic congestion and expanding urban space, the demand for tunnels continues to grow. Prefabricated construction, with its advantages of shortening construction time, high construction efficiency, energy saving, and environmental friendliness, has become increasingly prevalent in underground structures.

[0003] With the introduction of prefabricated construction technology into the construction of underground engineering projects such as urban tunnels, the complex geological conditions and challenging water and soil environments place high demands on the structural bearing capacity, durability, and waterproofing. Therefore, joint connection methods and waterproofing measures have become crucial for the widespread adoption of prefabricated technology. For vehicular tunnels, the large overall cross-section and limitations imposed by construction site, transportation conditions, and hoisting equipment prevent monolithic casting. Therefore, adopting a reasonable structural form, effective connection methods, and robust waterproofing are prerequisites for the widespread application of prefabricated tunnels. Based on the cross-sectional shape, the entire structure is rationally divided into several large-volume prefabricated components, which are then assembled on-site using reinforcing bars, connectors, or prestressing. Thus, reliable joint connection methods are essential for ensuring tunnel safety.

[0004] In the process of developing and utilizing underground space, underground structures have always been plagued by groundwater erosion and seepage. The waterproofing performance of these structures has become a key factor determining their safety and durability, directly impacting the success or failure of the project and the safety of people and property. Waterproofing failure in tunnel structures can lead to catastrophic consequences; therefore, strengthening waterproofing performance and optimizing waterproofing design and construction are of great significance to tunnel structures. Typically, water leakage in prefabricated tunnels is mainly caused by waterproofing failure at the joints. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a joint structure suitable for prefabricated open-cut tunnels, which has better waterproofing performance.

[0006] A joint structure applicable to prefabricated open-cut tunnels according to some embodiments of the present invention includes: a first joint having a first mating end with a mating groove; a second joint having a second mating end with a butt joint, the second mating end mating with the first mating end and the butt joint extending into the mating groove, and a grout channel forming between the outer wall of the butt joint and the groove wall of the mating groove, the grout channel containing sealing grout; two first seals, both of which are sealed between the first mating end and the second mating end, and the two first seals are respectively located at both ends of the grout channel; and two second seals, both of which are sealed between the first mating end and the second mating end, wherein one second seal is located on the side of one of the first seals away from the grout channel, and the other second seal is located on the side of the other first seal away from the grout channel.

[0007] The joint structure applicable to prefabricated open-cut tunnels according to the embodiments of this utility model has at least the following beneficial effects: In the joint structure of this utility model applicable to prefabricated open-cut tunnels, the first mating end of the first joint mates with the second mating end of the second joint. When the joint extends into the mating groove, the outer wall of the joint and the groove wall are not completely fitted together. Instead, a grout channel is formed between the outer wall of the joint and the groove wall, and this grout channel is filled with sealing grout. The sealing grout can be a modified epoxy resin, which, after being filled into the grout channel, can seal the gap between the first mating end of the first joint and the second mating end of the second joint. Specifically, it can seal a portion of the gap between the first mating end of the first joint and the second mating end of the second joint by sealing the grout channel. In addition, one first sealing element is set at the top of the grout channel, which can seal not only the top of the grout channel but also a portion of the gap between the first mating end of the first joint and the second mating end of the second joint; another first sealing element is set at the bottom of the grout channel, which can seal not only the bottom of the grout channel but also a portion of the gap between the first mating end of the first joint and the second mating end of the second joint. Furthermore, one second seal is positioned above the first seal at the top of the slurry channel to seal the gap between the first mating end of the first connector and the second mating end of the second connector, located above the first seal; another second seal is positioned below the first seal at the bottom of the slurry channel to seal the gap between the first mating end of the first connector and the second mating end of the second connector, located below the first seal. This multi-seal structure provides excellent waterproofing.

[0008] According to some embodiments of the present invention, the first sealing member includes a first sealing portion disposed at the first mating end and a second sealing portion disposed at the second mating end and abutting against the first sealing portion.

[0009] According to some embodiments of the present invention, the second sealing member includes a third sealing portion disposed at the first mating end and a fourth sealing portion disposed at the second mating end and abutting against the third sealing portion.

[0010] According to some embodiments of the present invention, the first mating end is provided with a first mounting groove for the third sealing part, and the second mating end is provided with a second mounting groove for the fourth sealing part.

[0011] According to some embodiments of the present invention, the joint structure applicable to prefabricated open-cut tunnels further includes a third sealing element, which is disposed on the side of one of the second sealing elements away from the grout channel.

[0012] According to some embodiments of the present invention, a grout groove is formed between the first mating end and the second mating end. The grout groove is located on the side of one of the second sealing members away from the grout channel. The third sealing member is disposed in the grout groove, and waterproof mortar located on the side of the third sealing member away from the grout channel is also disposed in the grout groove.

[0013] According to some embodiments of the present invention, the joint structure applicable to prefabricated open-cut tunnels further includes a fourth sealing element, which is disposed on the side of another second sealing element away from the grout channel.

[0014] According to some embodiments of the present invention, the first joint is provided with a grouting channel communicating with the grout channel.

[0015] According to some embodiments of this utility model, the joint structure applicable to prefabricated open-cut tunnels further includes a locking mechanism, which includes a screw and two nuts. The screw passes through the first joint and the second joint, and the two nuts are respectively locked at both ends of the screw.

[0016] According to some embodiments of the present invention, the joint structure applicable to prefabricated open-cut tunnels further includes a positioning mechanism, which is used to position the first joint and the second joint.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the joint structure of a prefabricated open-cut tunnel according to an embodiment of the present invention before connection; Figure 2 This is a schematic diagram of a joint structure applicable to prefabricated open-cut tunnels according to an embodiment of the present invention. Figure 3 for Figure 2 A magnified view of a portion of the figure shown.

[0019] Icon labels: 100. First joint; 101. Grout channel; 102. Sealing grout; 103. Grouting channel; 104. Grout groove; 105. First handhole; 106. Second handhole; 110. First mating end; 111. Butt groove; 200, Second connector; 210, Second mating end; 211, Butt joint; 300. First sealing element; 310. First sealing part; 320. Second sealing part; 400. Second seal; 410. Third seal; 420. Fourth seal; 500. Third sealing element; 600. Waterproof mortar; 700. Fourth sealing element; 800. Locking mechanism; 900. Positioning mechanism. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, features defined with "first" or "second" 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.

[0022] 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.

[0023] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a joint structure suitable for prefabricated open-cut tunnels, including a first joint 100 and a second joint 200.

[0024] The first connector 100 has a first mating end 110, and the first mating end 110 is provided with a mating groove 111; the second connector 200 has a second mating end 210, and the second mating end 210 is provided with a connecting piece 211. The first mating end 110 of the first connector 100 is mated with the second mating end 210 of the second connector 200 and the connecting piece 211 extends into the mating groove 111.

[0025] Specifically, one end of the first connector 100 is a first mating end 110, which has a mating groove 111. One end of the second connector 200 is a second mating end 210, which has a butt joint 211. The first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200 are positioned opposite each other and mated, with the butt joint 211 of the second connector 200 extending into the mating groove 111 of the first connector 100.

[0026] Combination Figure 2 and Figure 3It should be noted that when the first mating end 110 of the first connector 100 is mated with the second mating end 210 of the second connector 200, and the mating connector 211 extends into the mating groove 111, the outer wall of the mating connector 211 and the groove wall of the mating groove 111 are not completely fitted together. Instead, a grout channel 101 is formed between the outer wall of the mating connector 211 and the groove wall of the mating groove 111, and the grout channel 101 is filled with sealing grout 102.

[0027] Furthermore, the first joint 100 is provided with a grouting channel 103 that communicates with the grout channel 101. Specifically, one end of the grouting channel 103 penetrates the wall of the docking groove 111 and communicates with the grout channel 101, and the other end penetrates the outer wall of the first joint 100. Sealing grout 102 can be injected into the grout channel 101 through the grouting channel 103.

[0028] The sealing grout 102 can be a modified epoxy resin. After being filled into the grout channel 101, it can seal the gap between the first mating end 110 of the first joint 100 and the second mating end 210 of the second joint 200. Specifically, it can seal a portion of the gap between the first mating end 110 of the first joint 100 and the second mating end 210 of the second joint 200 by sealing the grout channel 101.

[0029] Combination Figure 1 and Figure 2 Furthermore, the joint structure also includes two first seals 300, both of which are sealed between the first mating end 110 of the first joint 100 and the second mating end 210 of the second joint 200, and the two first seals 300 are located at both ends of the slurry channel 101 respectively.

[0030] Specifically, one first sealing element 300 is disposed at the top of the slurry channel 101, which can not only seal the top of the slurry channel 101, but also seal a portion of the gap between the first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200; the other first sealing element 300 is disposed at the bottom of the slurry channel 101, which can not only seal the bottom of the slurry channel 101, but also seal a portion of the gap between the first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200.

[0031] It should be noted that each first seal 300 includes a first sealing portion 310 disposed on the first mating end 110 of the first connector 100, and a second sealing portion 320 disposed on the second mating end 210 of the second connector 200 and abutting against the first sealing portion 310.

[0032] The first sealing part 310 and the second sealing part 320 are both sealing gaskets, which are held together to form a sealing structure.

[0033] Furthermore, the joint structure also includes two second seals 400, both of which are sealed between the first mating end 110 of the first joint 100 and the second mating end 210 of the second joint 200. One of the second seals 400 is located on the side of one of the first seals 300 away from the slurry channel 101, and the other second seal 400 is located on the side of the other first seal 300 away from the slurry channel 101.

[0034] Specifically, one second seal 400 is disposed above the first seal 300 located at the top of the slurry channel 101, and is used to seal the gap between the first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200 located above the first seal 300; the other second seal 400 is disposed below the first seal 300 located at the bottom of the slurry channel 101, and is used to seal the gap between the first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200 located below the first seal 300.

[0035] It should be noted that each of the second seals 400 includes a third sealing portion 410 disposed on the first mating end 110 of the first connector 100, and a fourth sealing portion 420 disposed on the second mating end 210 of the second connector 200 and abutting against the third sealing portion 410.

[0036] The third sealing part 410 and the fourth sealing part 420 are both sealing gaskets, which are held together to form a sealing structure.

[0037] Furthermore, the first mating end 110 of the first connector 100 is provided with a first mounting groove for the third sealing part 410 to be installed. Specifically, the first mating end 110 of the first connector 100 is provided with two first mounting grooves, and the third sealing parts 410 of the two second sealing elements 400 are respectively installed in the two first mounting grooves; the second mating end 210 of the second connector 200 is provided with a second mounting groove for the fourth sealing part 420 to be installed. Specifically, the second mating end 210 of the second connector 200 is provided with two second mounting grooves, and the fourth sealing parts 420 of the two second sealing elements 400 are respectively installed in the two second mounting grooves.

[0038] In some embodiments, the joint structure further includes a third seal 500, which is disposed on the side of one of the second seals 400 away from the slurry channel 101, specifically above the second seal 400 located above the slurry channel 101. The third seal 500 may be water-swellable rubber.

[0039] Furthermore, a grout groove 104 is formed between the first mating end 110 of the first connector 100 and the second mating end 210 of the second connector 200. The grout groove 104 is located on the side of one of the second seals 400 away from the grout channel 101, specifically above the second seal 400 located above the grout channel 101. The third seal 500 is disposed in the grout groove 104, and waterproof mortar 600 located on the side of the third seal 500 away from the grout channel 101 is also disposed in the grout groove 104.

[0040] Furthermore, the joint structure also includes a fourth seal 700, which is disposed on the side of another second seal 400 away from the slurry channel 101, specifically below the second seal 400 located below the slurry channel 101, wherein the fourth seal 700 is a sealing gasket.

[0041] Combination Figure 1 and Figure 2 In some embodiments, the connector structure further includes a locking mechanism 800, wherein the locking mechanism 800 includes a screw and two nuts. The screw passes through the first connector 100 and the second connector 200, and the two nuts are respectively locked at both ends of the screw. The locking mechanism 800 can be used to pull the first connector 100 and the second connector 200 together and lock them together.

[0042] Furthermore, the first connector 100 is provided with a first hand hole 105, and the second connector 200 is provided with a second hand hole 106. The two ends of the screw extend into the first hand hole 105 and the second hand hole 106 respectively, and the operator can screw nuts onto the two ends of the screw through the first hand hole 105 and the second hand hole 106 respectively.

[0043] like Figure 2 As shown, the connector structure further includes a positioning mechanism 900 for positioning the first connector 100 and the second connector 200, thereby improving the assembly accuracy of the first connector 100 and the second connector 200. The positioning mechanism 900 may include a positioning pin disposed on one of the first connector 100 and the second connector 200, and a positioning hole disposed on the other.

[0044] like Figure 1 , Figure 2 As shown, the joint structure for prefabricated open-cut tunnels provided by this utility model is implemented as follows: 1. The prefabricated components of the prefabricated tunnel structure are manufactured in the factory, and the first sealing part 310 and the third sealing part 410 are installed on the first joint 100, and the second sealing part 320 and the fourth sealing part 420 are installed on the second joint 200. 2. Hoist the precast components to the installation position and accurately position them using the positioning mechanism 900. At the same time, insert the screws into the first joint 100 and the second joint 200 in advance. 3. Use nuts to install and fix both ends of the screw, ensuring that the first connector 100 and the second connector 200 are aligned and flush, and at the same time ensuring the effectiveness of the waterproof measures of the sealing components.

[0045] 4. Grouting is carried out through grouting channel 103 into grout channel 101 until it is full, thus forming an effective waterproofing measure.

[0046] 5. Install the third sealing element 500 in the grout tank 104 and use polymer waterproof mortar 600 for caulking. At the same time, use the fourth sealing element 700 to seal the lower side of the joint.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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 the present invention. 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 may be combined in any suitable manner in one or more embodiments or examples.

[0048] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A joint structure suitable for prefabricated open-cut tunnels, characterized in that, include: The first connector has a first mating end, and the first mating end is provided with a mating groove; The second connector has a second mating end, which is provided with a connecting joint. The second mating end mates with the first mating end and the connecting joint extends into the mating groove. A slurry channel is formed between the outer wall of the connecting joint and the groove wall of the mating groove, and a sealing slurry is provided in the slurry channel. Two first seals are provided, each sealing between the first mating end and the second mating end, and the two first seals are located at both ends of the slurry channel. Two second seals are provided, both of which are sealed between the first mating end and the second mating end. One of the second seals is located on the side of one of the first seals away from the slurry channel, and the other second seal is located on the side of the other first seal away from the slurry channel.

2. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, The first sealing element includes a first sealing portion disposed at the first mating end and a second sealing portion disposed at the second mating end and abutting against the first sealing portion.

3. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, The second sealing element includes a third sealing portion disposed at the first mating end and a fourth sealing portion disposed at the second mating end and abutting against the third sealing portion.

4. The joint structure applicable to prefabricated open-cut tunnels according to claim 3, characterized in that, The first mating end is provided with a first mounting groove for the third sealing part, and the second mating end is provided with a second mounting groove for the fourth sealing part.

5. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, It also includes a third seal, which is disposed on the side of one of the second seals away from the slurry channel.

6. The joint structure applicable to prefabricated open-cut tunnels according to claim 5, characterized in that, A grout groove is formed between the first mating end and the second mating end. The grout groove is located on the side of one of the second seals away from the grout channel. The third seal is disposed in the grout groove, and waterproof mortar is also disposed in the grout groove on the side of the third seal away from the grout channel.

7. The joint structure applicable to prefabricated open-cut tunnels according to claim 5, characterized in that, It also includes a fourth seal, which is disposed on the side of another second seal away from the slurry channel.

8. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, The first joint is provided with a grouting channel that communicates with the grout channel.

9. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, It also includes a locking mechanism, which includes a screw and two nuts. The screw passes through the first joint and the second joint, and the two nuts are respectively locked at both ends of the screw.

10. The joint structure applicable to prefabricated open-cut tunnels according to claim 1, characterized in that, It also includes a positioning mechanism for positioning the first connector and the second connector.

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