A leaking structure, an underwater box culvert sealing system and method

Abstract

The present application relates to the technical field of box culvert, and particularly relates to a leaking stop structure, an underwater box culvert sealing system and a method. The leaking stop structure comprises a sealing piece and a tensioning piece. The sealing piece comprises an integral end head and two tail wings. The two tail wings have a gap interval therebetween. One tail wing at least partially deviates from a first side of the end head, and the other tail wing at least partially deviates from a second side of the end head. A through connection hole is arranged on the end head. The connection hole is located between the two tail wings. The connection hole comprises a first opening and a second opening. The first opening is in communication with the gap interval. The tensioning piece penetrates through the connection hole. The part of the tensioning piece located outside the first opening is connected with a locking piece. The part of the tensioning piece located outside the second opening is provided with a clamping piece. The leaking stop structure has the advantages of simple structure, low manufacturing and installation cost, and can be used for joint sealing in underwater environment. The leaking stop structure has good sealing effect and low installation difficulty, and can greatly reduce the sealing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of box culvert, in particular to a leaking stoppage structure, an underwater box culvert sealing system and method. BACKGROUND

[0002] Box culvert, for example, water intake and drainage box culvert, is a common water conveying structure. A culvert channel can be formed by a plurality of box culverts connected in sequence. The culvert channel has a communication passage which is isolated from the outside by the outer wall of the box culvert and can be used for water conveying or pipeline laying. During routine maintenance, the technical personnel found that a certain built water intake and drainage culvert leaked, which was manifested as continuous bubbles from the water bottom. Through auxiliary technical means to observe the leakage position, it was found that the leakage occurred at the connection between the two adjacent box culverts, and the culvert body was not damaged. Further analysis of the leakage causes showed that it might be caused by factors such as foundation settlement, wave impact or construction error. Since the size of the communication passage inside the culvert channel is relatively small, it does not have the conditions for continuous sealing operation, and the sealing work can only be carried out in the underwater environment outside the box culvert.

[0003] Therefore, the technical personnel in the field thought of using rubber for sealing. The conventional rubber sealing structure is suitable for land surface environment. In order to seal and fix the rubber sealing structure, a series of connection work needs to be carried out. The low visibility in underwater environment and the constantly stirred seawater increase the installation difficulty, so that the sealing scheme which is feasible on the shore is greatly improved in difficulty. In order to achieve the required installation precision, huge time and labor cost are needed. SUMMARY

[0004] The present application aims to overcome the problem in the background art that in the underwater environment, the conventional rubber sealing needs huge time and labor cost to achieve the required installation precision, and provides a leaking stoppage structure, an underwater box culvert sealing system and method.

[0005] In a first aspect, the present application provides a leaking stoppage structure, comprising a sealing piece and a tensioning piece, wherein: the sealing piece comprises an integral end head and two tail wings, the two tail wings are located on the same side of the end head, and the two tail wings have a gap interval therebetween, and: one of the tail wings at least partially deviates from a first side of the end head, and the other tail wing at least partially deviates from a second side of the end head opposite to the first side, the sealing piece is made of rubber with a Shore A hardness greater than or equal to 50 degrees; a connecting hole is provided on the end head and penetrates through the end head, the connecting hole is located between the two tail wings, the connecting hole comprises a first opening and a second opening, and the first opening is in communication with the gap interval; the tensioning piece penetrates through the connecting hole, a part of the tensioning piece located outside the first opening is connected with a locking piece, and a part of the tensioning piece located outside the second opening is provided with a clamping piece.

[0006] The application provides a leaking stoppage structure, a sealing member is made of rubber with elastic deformation capacity, and a gap interval is arranged between two tail wings, the tail wings can be folded to the gap interval under extrusion of external force through the deformation capacity between the end head and the tail wings, so as to reduce the maximum transverse interval of the two tail wings, and the tail wings can be inserted into a joint with a width equal to or slightly greater than the width of the end head; and after being inserted into the joint, the elastic restoring force of the sealing member can make the tail wings have a tendency to extrude the corresponding side wall, so that the two tail wings can be attached to the side walls on both sides of the joint, and the sealing and water-stopping effect is achieved.

[0007] The connecting hole arranged on the end head and the tensioning member matched with the connecting hole can realize quick installation of the sealing member, the clamping member on one side of the tensioning member can be connected to an existing structure, and the locking member arranged on the other side of the tensioning member can limit the end head from being pulled out in the direction away from the clamping member; the installation process of the sealing member can be simplified, the sealing member is convenient to install in an underwater environment, and the overall stability and reliability of the leaking stoppage structure can be improved.

[0008] The leaking stoppage structure has simple structure, low manufacturing and installation cost, can be used for joint sealing in an underwater environment, has good sealing effect and low installation difficulty, and can greatly reduce the sealing cost.

[0009] Preferably, the locking member can move along the tensioning member, and the outer diameter of the locking member is greater than the hole diameter of the first opening.

[0010] Preferably, the locking member is a nut, and the locking member is threadedly matched with the tensioning member.

[0011] Preferably, on the cross section of the sealing member: the end head comprises a large end and a small end, and the tail wings are connected to the large end.

[0012] Preferably, the two tail wings are symmetrically arranged along the axis of the connecting hole; and the outer side surface of the tail wing is connected to the side surface of the end head.

[0013] Preferably, the axis of the connecting hole is parallel to the cross section of the end head; and at least two connecting holes are arranged at intervals along the length direction of the end head.

[0014] Preferably, the Shore A hardness of the end head and the tail wings is 55-65 degrees.

[0015] Preferably, the included angle between the tail wing and the axis of the connecting hole is 5-20 degrees.

[0016] In a second aspect, the present application provides an underwater box culvert sealing system, comprising at least two box culverts and a sealing structure as described above, a joint being present between two adjacent box culverts, the end head and the tail wing being at least partially inserted into the joint, the two tail wings being respectively attached to the two side walls of the joint; the transverse width of the clamping piece is greater than the width of the joint, and the clamping piece is clamped to the inside of the box culvert.

[0017] The underwater box culvert sealing system provided by the present application can achieve rapid sealing of the underwater box culvert at a low cost by using the sealing structure as described above, greatly reduces the sealing cost and can obtain a better sealing effect.

[0018] Preferably, the maximum transverse distance between the outer sides of the two tail wings in the initial state is greater than the width of the joint.

[0019] Preferably, the sealing piece is continuously arranged along the length direction of the joint, and the tensioning piece is arranged at intervals along the length direction of the joint.

[0020] Preferably, at least two sealing pieces are arranged along the length direction of the joint, and a foam board is filled between adjacent sealing pieces; at least part of the sealing pieces have a folding angle adapted to the corner of the box culvert.

[0021] In a third aspect, the present application provides an underwater box culvert sealing method, using a sealing structure as described above, comprising at least two box culverts, a joint being present between two adjacent box culverts, the locking piece being a nut, and the locking piece being threadedly connected with the tensioning piece; comprising the following steps:

[0022] S1. The tensioning piece is inserted through the connecting hole, and the end of the tensioning piece provided with the clamping piece is extended into the joint from the outside of the joint, so that the clamping piece is clamped to the inside of the box culvert;

[0023] S2. The sealing piece is moved relative to the tensioning piece until the sealing piece is partially inserted into the joint, and the locking piece is installed;

[0024] S3. The locking piece is moved relative to the tensioning piece towards the inside of the box culvert, and the sealing piece is pushed into the joint by the locking piece until the end head is completely inserted into the joint.

[0025] The box culvert sealing method provided by the present application uses the movement of the locking piece relative to the tensioning piece to push the sealing piece further into the joint, which can provide a clear force point for the installation of the sealing piece and can reduce the difficulty of underwater installation; the locking piece is a nut, which can push the sealing piece to move by screwing the locking piece, so that the torsional force can replace the pushing and pulling force to push the sealing piece, which facilitates the installation operation by using a wrench or an electric wrench, and can greatly reduce the installation difficulty.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] 1. The application provides a plugging structure, wherein a plugging member is made of rubber with elastic deformation capacity, and a gap interval is arranged between two tail wings; the tail wings can be folded to the gap interval under extrusion of external force through the deformation capacity between the end head and the tail wings, so that the maximum lateral distance of the two tail wings is reduced, the tail wings can be inserted into a joint with a width equal to or slightly greater than the width of the end head, and the elastic restoring force of the plugging member can make the tail wings have a tendency to extrude the corresponding side wall after being inserted into the joint, so that the two tail wings can be attached to the side walls on both sides of the joint, and the sealing and water-stopping effect is achieved. A connecting hole is arranged on the end head, and a tensioning member matched with the connecting hole can realize rapid installation of the plugging member, the clamping member on one side of the tensioning member can be connected to an existing structure, and the locking member arranged on the other side of the tensioning member can limit the end head from being pulled out in the direction away from the clamping member; the installation process of the plugging member can be simplified, the plugging member is convenient to install in an underwater environment, and the overall stability and reliability of the plugging structure can be improved. The plugging structure has the advantages of simple structure, low manufacturing and installation cost, can be used for joint sealing in an underwater environment, has good sealing effect and low installation difficulty, and can greatly reduce the sealing cost.

[0028] 2. The underwater box culvert plugging system provided by the application can realize rapid plugging of the underwater box culvert 3 at a low cost, greatly reduce the plugging cost, and obtain good sealing effect.

[0029] 3. The box culvert plugging method provided by the application uses the movement of the locking member relative to the tensioning member to push the plugging member to be further inserted into the joint, can provide a clear force point for the installation of the plugging member, and can reduce the underwater installation difficulty; the locking member is a nut, the plugging member can be pushed to move by screwing the locking member, so that the torsional force can replace the pushing and pulling force to push the plugging member, the installation operation can be conveniently performed by using a wrench or an electric wrench, and the installation difficulty can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The cross section of the plugging member Figure 1 ;

[0031] Figure 2 The cross section of the plugging member Figure 2 ;

[0032] Figure 3 The cross section of the underwater box culvert plugging system described in Example 2;

[0033] Figure 4 The front view of the underwater box culvert plugging system described in Example 3;

[0034] Figure 5Cross-sectional view of the underwater box culvert sealing system described in Example 4;

[0035] Figure 6 Schematic view of the corner described in Example 3;

[0036] Figure 7 Schematic view of the structure of the underwater box culvert sealing system described in the present application (in the direction of the cross-section of the box culvert);

[0037] Figure 8 Cross-sectional view of another form of the sealing member described in the present application.

[0038] Markings in the figure:

[0039] 1 - end portion;

[0040] 11 - first side; 12 - second side; 13 - large end; 14 - small end; 15 - connecting hole; 16 - first opening; 17 - second opening;

[0041] 2 - tail wing;

[0042] 21 - gap interval;

[0043] 3 - box culvert;

[0044] 4 - joint;

[0045] 41 - side wall;

[0046] 5 - tensioning assembly;

[0047] 51 - tensioning member; 52 - locking member; 53 - pressure plate; 54 - clamping member; 55 - cushion block;

[0048] 6 - foam board;

[0049] 7 - corner;

[0050] 8 - waterstop rubber;

[0051] 9 - crimping assembly. DETAILED DESCRIPTION

[0052] The present application will be further described in conjunction with specific examples. However, it should not be understood that the scope of the above-mentioned subject matter of the present application is limited to the following examples, and any technology realized based on the content of the present application falls within the scope of the present application.

[0053] In the description of the embodiments of the present application, the terms of orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are expressed based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / apparatus of the present application is usually used, unless otherwise specified. These terms of orientation or positional relationship are only for the convenience of describing the present application or simplifying the description in the embodiments, facilitating the understanding of the scheme by the skilled in the art, and should not be construed as indicating or implying that the specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be construed as a limitation of the present application.

[0054] In addition, the terms "horizontal", "vertical", "suspended", "parallel", etc. do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or suspended or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to mean that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "suspended", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present application.

[0055] In addition, the terms "first", "second", "third", etc. in the description of the embodiments of the present application are only used to distinguish the same or similar components, and should not be construed as emphasizing or implying the relative importance of the specific components.

[0056] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0057] In addition, in the description of the technical scheme of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, such as welding, riveting, bolting, screwing, etc. The connection means commonly used in the art. Such connection can be mechanical connection, or electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements.

[0058] Embodiment 1

[0059] Please refer to Figure 1 、 2 , 8, the sealing structure provided by the embodiment comprises a sealing member and a tensioning member 51, wherein: the sealing member comprises an integral end head 1 and two tail wings 2, the two tail wings 2 are located on the same side of the end head 1, and the two tail wings 2 have a gap interval 21 therebetween, and: one tail wing 2 at least partially protrudes from a first side 11 of the end head 1, and the other tail wing 2 at least partially protrudes from a second side 12 of the end head 1 opposite to the first side 11, the sealing member is made of rubber with a Shore A hardness greater than or equal to 50 degrees; the end head 1 is provided with a through connecting hole 15, the connecting hole 15 is located between the two tail wings 2, the connecting hole 15 comprises a first opening 16 and a second opening 17, the first opening 16 communicates with the gap interval 21; the tensioning member 51 penetrates through the connecting hole 15, and the part of the tensioning member 51 located outside the first opening 16 is connected with a locking member 52, and the part of the tensioning member 51 located outside the second opening 17 is provided with a clamping member 54.

[0060] The end head 1 and the tail wing 2 are integrally formed by rubber, the rubber has a certain deformation capacity, so that the end head 1 and the tail wing 2 can deform relatively under external force, and if the relative deformation is within the elastic range, the end head 1 and the tail wing 2 can restore to the original state after deformation.

[0061] The sealing member can be a strip-shaped member, Figure 1 and 2 is a cross-sectional view of the sealing member, the two tail wings 2 are connected on the same side of the end head 1, the two tail wings 2 have a gap interval 21 therebetween, the gap interval 21 can provide an accommodation area when the tail wing 2 is relative to the end head 1, the ends of the two tail wings 2 away from the end head 1 are away from each other, and one of the tail wings 2 protrudes from the first side 11 in the width direction of the end head 1, and the other tail wing 2 protrudes from the second side 12 in the width direction of the end head 1; through the deformation capacity between the end head 1 and the tail wing 2, the tail wing 2 can be close to the interval area under external pressure, so as to reduce the size of the sealing member in the width direction, so that it can be inserted into the joint 4 with a width equal to or slightly greater than the width of the end head 1; and after being inserted into the joint 4, the restoring force between the end head 1 and the tail wing 2 makes the tail wing 2 open and protrude from the first side 11 or the second side 12 of the end head 1, the size of the sealing member in the width direction increases, and the tail wing 2 can abut against the side walls 41 on both sides of the joint 4, so as to realize the sealing and plugging of the joint 4 through the tail wing 2.

[0062] The end head 1 is provided with a through connecting hole 15, such as Figures 1-3As shown, the connecting hole 15 is a straight hole and is located between the two tail wings 2, the connecting hole 15 includes a first opening 16 and a second opening 17, wherein: the first opening 16 communicates with the gap interval 21, and the second opening 17 communicates with the side of the end head 1 away from the tail wing 2; the connecting hole 15 can be used for a screw rod or the like to pass through, so as to assist in fixing the plugging piece through the screw rod or the like, thereby improving the stability of the plugging piece.

[0063] Further comprising a tensioning assembly 5, the tensioning assembly 5 includes a tensioning piece 51, a locking piece 52 and a clamping piece 54, wherein: the tensioning piece 51 penetrates through the connecting hole 15 and extends out of the first opening 16 and the second opening 17 respectively at both ends; on the outside of the second opening 17, the clamping piece 54 is arranged on the tensioning piece 51, and the clamping piece 54 can be clamped with the existing structure, so as to clamp the tensioning piece 51 on the existing structure; on the outside of the first opening 16, that is, in the gap interval 21, the locking piece 52 is connected to the tensioning piece 51, and the outer diameter of the locking piece 52 is greater than the hole diameter of the first opening 16, so that the locking piece 52 can prevent the plugging piece from being pulled out along the tensioning piece 51 towards the clamping piece 54.

[0064] For the joint 4 between the box culverts 3, the clamping piece 54 can be clamped on the inside of the box culvert 3 to limit the movement of the tensioning piece 51 towards the outside of the joint 4, the plugging piece is at least partially inserted into the joint 4 and the end head 1 is located between the clamping piece 54 and the locking piece 52, and the locking piece 52 can limit the movement of the end head 1 towards the outside of the joint 4, so as to fix the plugging piece between the joints 4.

[0065] Preferably, a pressure bearing plate 53 can be arranged between the locking piece 52 and the end head 1, and the pressure bearing plate 53 can disperse the extrusion force and reduce the probability of splitting of the end head 1. The tensioning piece 51 can be a rod piece matched with the shape of the connecting hole 15, and the outer diameter of the tensioning piece 51 can be slightly smaller than the inner diameter of the connecting hole 15, so that the tensioning piece 51 and the connecting hole 15 are in interference fit through the elastic deformation of the plugging piece, thereby improving the sealing effect between the two.

[0066] In this embodiment, the axial direction of the connecting hole 15 is defined as the height direction, for example, the Z direction in Figure 2 ; the direction parallel to the cross section and perpendicular to the Z direction is defined as the width direction, for example, the X direction in Figure 2 .

[0067] Please refer to Figure 1 , 8 , the cross-sectional shape of the end head 1 can be square, circular, triangular, arc-shaped, etc., and the first side 11 and the second side 12 are two opposite sides in the width direction of the end head 1; during installation, the plugging piece is inserted into the joint 4 along the height direction thereof, and the two tail wings 2 extend out of both sides in the width direction of the end head 1, so that they can abut against the side wall of the joint 4 through the restoring force.

[0068] Preferably, the Shore A hardness of the plugging member is greater than or equal to 50 degrees.

[0069] Further preferably, the Shore A hardness of the plugging member is 55-65 degrees. By using a rubber with relatively high hardness, the plugging member has relatively high strength, rigidity and elastic recovery force after deformation, so that it can resist water pressure and tightly adhere to the side wall of the joint 4 under the action of water pressure.

[0070] The plugging structure provided in the embodiment is made of a rubber with elastic deformation capacity, and has a gap interval 21 between the two tail wings 2. Through the deformation capacity between the end head 1 and the tail wings 2, the tail wings 2 can be folded to the gap interval 21 under external pressure, so as to reduce the maximum lateral distance between the two tail wings 2, so that the tail wings 2 can be inserted into the joint 4 with a width equal to or slightly greater than the width of the end head 1; and after being inserted into the joint 4, the elastic recovery force of the plugging member can make the tail wings 2 have a tendency to press against the corresponding side wall 41, so that the two tail wings 2 can be tightly adhered to the side walls 41 on both sides of the joint 4, achieving the sealing and water-stopping effect.

[0071] By arranging the connecting hole 15 on the end head 1 and the tensioning member 51 matched with the connecting hole 15, the plugging member can be quickly installed, the clamping member 54 on one side of the tensioning member 51 can be connected to the existing structure, and the locking member 52 arranged on the other side of the tensioning member 51 can be used to limit the end head 1 from being pulled out in the direction away from the clamping member 54; the installation process of the plugging member can be simplified, which is convenient for installation in underwater environment, and can also improve the overall stability and reliability of the plugging structure.

[0072] The plugging structure described in the embodiment has simple structure, low manufacturing and installation cost, can be used for sealing the joint 4 in underwater environment, has good sealing effect and low installation difficulty, and can greatly reduce the sealing cost.

[0073] In one or several preferred embodiments, the locking member 52 can move relative to the tensioning member 51; the distance between the locking member 52 and the clamping member 54 can be adjusted by the relative movement of the two, so as to adjust the active interval of the plugging member; during installation, the plugging member can be moved in the direction of the clamping member 54 by moving the locking member 52, so as to further insert the plugging member into the joint 4; this method uses the locking member 52 as the fulcrum, which can reduce the difficulty of underwater installation.

[0074] Preferably, the locking member 52 is a nut, and the locking member 52 is threadedly matched with the tensioning member 51.

[0075] The tensioning member 51 can be provided with external threads, and during installation, the plugging member can be moved by screwing the locking member 52, so that the torsional force can replace the pushing and pulling force to move the plugging member, which can greatly reduce the installation difficulty.

[0076] In one or several preferred embodiments, in the cross section of the closure: the head 1 comprises a large end 13 and a small end 14, and the tail 2 is connected to the large end 13.

[0077] Please refer to Figure 1 In the cross section of the head 1, there is a small end 14 with a smaller width and a large end 13 with a larger width, the small end 14 and the large end 13 are oppositely arranged, and the tail 2 is connected to the large end 13. When the closure is installed, the small end 14 can be inserted into the joint 4 first, and because the small end 14 has a smaller size, it can be more convenient and accurate to align the joint 4, thereby reducing the difficulty of installation.

[0078] Preferably, the head 1 is a wedge-shaped member, and the width of the head 1 continuously decreases from the large end 13 to the small end 14. The continuous decrease in the width of the head 1 can make the side wall of the head 1 present a smooth transition plane, thereby reducing the obstruction encountered when the closure is inserted under the condition of limited underwater field of view, making the installation more smooth; the continuous decrease can also reduce the protruding and corner structure on the closure, improve the stress concentration on the closure, and reduce the probability of damage during installation.

[0079] Preferably, the two tails 2 are symmetrically arranged along the axis of the connecting hole 15; the outer side of the tail 2 is connected to the side of the head 1.

[0080] Please refer to Figure 1 The outer side of the tail 2 is connected to the side of the head 1 means that there is no jump structure between the two sides, and the outer side of the tail 2 and the side of the head 1 are transitioned by an angle or an arc; in this way, the protruding structure on the closure can be reduced, and the probability of damage to the closure during installation can be reduced.

[0081] Preferably, the axis of the connecting hole 15 is parallel to the cross section of the head 1; and the at least two connecting holes 15 are arranged at intervals along the length direction of the head 1.

[0082] The length direction of the head 1 is the direction of the head 1, which can correspond to the direction of the joint 4.

[0083] Preferably, the angle between the tail 2 and the axis of the connecting hole 15 is 5-20°.

[0084] Preferably, the tensile strength of the closure is greater than or equal to 10 MPa, the elongation at break is greater than or equal to 380%, and the tear strength is greater than or equal to 30 KN / m.

[0085] Example 2

[0086] Please refer to Figures 3-7The underwater box culvert plugging system provided in the embodiment comprises at least two box culverts 3 and the plugging member as described in Embodiment 1, there is a joint 4 between the two adjacent box culverts 3, the end head 1 and the tail wing 2 are at least partially plugged into the joint 4, and the two tail wings 2 are respectively tightly attached to the two side walls 41 of the joint 4; the transverse width of the clamping member 54 is greater than the width of the joint 4, and the clamping member 54 is clamped to the inner side of the box culvert 3.

[0087] The box culvert 3 can be a water intake and drainage box culvert. In the conventional construction process, a plurality of box culverts 3 are connected in an end-to-end butt joint manner, a water stop or the like is arranged between the two adjacent box culverts 3 as needed, and bagged, block stones or the like are thrown and filled outside the box culvert 3 to avoid or reduce the seawater intrusion and reduce the impact of sea waves. Under some conditions, a joint 4 can be generated between the two adjacent box culverts 3 that have been built, the joint 4 is located between the end faces of the two box culverts 3, the joint 4 destroys the sealing between the box culverts 3, and seawater or other liquids can seep into the inside of the box culvert 3, thereby affecting the normal use of the box culvert 3; the joint 4 can be caused by the following reasons: ① uneven settlement of the foundation; ② misplacement of the box culvert 3 caused by sea waves; and ③ damage to the original water stop structure.

[0088] For reasons ① and ②, the two adjacent box culverts 3 can be misaligned, which increases the plugging difficulty; therefore, the length of the tail wing 2 can be increased so that the tail wing 2 can be attached to the side walls 41 that are misaligned with each other, as shown in FIG. 4; and a cushion block 55 can be arranged inside the box culvert 3 to level the clamping member. Figure 3

[0089] The underwater box culvert plugging system provided in the embodiment can realize rapid plugging of the underwater box culvert 3 at a low cost by using the plugging structure as described above, thereby greatly reducing the plugging cost and obtaining a better sealing effect.

[0090] Preferably, the maximum transverse distance between the outer side surfaces of the two tail wings 2 in the initial state is greater than the width of the joint 4; the initial state refers to the state in which the plugging member is not deformed by extrusion.

[0091] Preferably, the plugging member is continuously arranged along the length direction of the joint 4, and the tensioning member 51 is arranged at intervals along the length direction of the joint 4.

[0092] The length direction of the joint 4 is usually similar to a “|” shape, and the plugging member can be a continuous strip in the “|” shape, which has a better sealing effect.

[0093] Embodiment 3

[0094] The box culvert plugging system provided in the embodiment is different from Embodiment 2 in that at least two plugging members are arranged along the length direction of the joint 4, the adjacent plugging members are filled with the foam board 6, and at least part of the plugging members has the corner 7 that is adapted to the corner of the box culvert 3. ​

[0095] The box culvert sealing system described in the embodiment uses several sections of sealing members to seal the joint 4, the weight and volume of a single sealing member is greatly reduced, facilitating the transportation and installation by divers, and improving the flexibility of installation.

[0096] Please refer to Figure 4 , 6 , Figure 6 The sealing member has an angle 7, which can be installed at two corners of the box culvert 3, and the sealing member arranged flat can be installed on the side or top of the box culvert 3; the adjacent sealing members can be sealed by a foam board 6 with high compressibility.

[0097] Embodiment 4

[0098] Please refer to Figure 5 The underwater box culvert sealing system provided in the embodiment further comprises a water stop rubber 8 and a pressing assembly 9 on the basis of the embodiments 2 or 3, the water stop rubber 8 covers the outside of the sealing member and the joint 4, and the transverse sides of the water stop rubber 8 are fixed by the pressing assembly 9.

[0099] The water stop rubber 8 can be made of rubber with a Shore A hardness of 35-45 degrees, and the water stop rubber 8 can be an integral structure extending along the joint 4, or can be composed of several sections. By arranging the water stop rubber 8 outside the sealing member, the sealing effect can be further improved.

[0100] In some embodiments, the water stop rubber 8 is provided with a preliminary installation assembly, which comprises a plurality of corresponding preliminary installation members and nail-in members. The nail-in members can be expansion bolts, and the preliminary installation members can be strips arranged on both sides of the water stop rubber 8. The strips are integrally formed with the water stop rubber 8 and protrude from the side edges of the water stop rubber 8. The preliminary installation members are provided with mounting holes, and one end of the nail-in members can be inserted into the mounting holes and driven into the outer wall of the box culvert 3, so as to quickly position and fix the water stop rubber 8 in the underwater complex environment and realize preliminary installation. When all the nail-in members are fixed on the box culvert 3 in cooperation with the preliminary installation members, the water stop rubber 8 is in a tension state in the length direction.

[0101] The pressing assembly 9 is used for further fixing and installing the water stop rubber 8, and the pressing assembly 9 can comprise an anchor screw, a pressing plate and a nut. The side edge of the water stop rubber 8 can be arranged between the pressing plate and the box culvert 3, the anchor screw is partially driven into the box culvert 3, and the other part penetrates through the pressing plate and is connected with the nut. The pressing plate is fastened by the nut, and then the side edge of the water stop rubber 8 is fastened.

[0102] The underwater box culvert plugging system provided by the embodiment uses flexible waterstop rubber 8 to plug outside the joint 4. The flexible waterstop rubber 8 has relatively large deformation capacity, can better adapt to the misalignment between the box culverts 3, and cope with the further development of the misalignment of the box culverts 3. The flexible waterstop rubber 8 has relatively light weight, facilitating underwater transportation and positioning installation. By setting the initial installation structure, the initial installation structure includes an initial installation piece and a nail-in piece. The initial installation piece and the waterstop rubber 8 can be quickly and conveniently initially installed on the box culverts 3 by using the nail-in piece. The positioning and tensioning process of the waterstop rubber 8 can be performed in the initial installation, providing an operation reference for the sealing and fixing of the subsequent pressure joint assembly 9, which is beneficial to reducing the installation difficulty of the pressure joint assembly 9 and improving the installation precision and sealing effect of the waterstop rubber 8. The pressure joint assembly 9 includes an anchor screw, a pressing plate and a nut. The pressing plate has a large fastening surface, has higher fixing strength and better sealing effect compared with single-point fixing. The waterstop rubber 8 is fixed and installed in the manner of being pressed and fixed by the pressing plate, without cutting or punching the waterstop rubber 8, so that the integrity of the waterstop rubber 8 can be maintained, the probability of the waterstop rubber 8 in the installation and use process is reduced, and the working life of the plugging system is improved.

[0103] Preferably, the initial installation pieces are symmetrically arranged on both sides of the waterstop rubber 8, and a plurality of initial installation pieces are arranged at intervals on the same side, and the interval can be 800-1200 mm.

[0104] In some embodiments, the waterstop rubber 8 is installed by the following steps:

[0105] Step one: spread and lay the waterstop rubber 8 on the box culverts 3, and the waterstop rubber 8 corresponds to the joint 4;

[0106] Step two: install the nail-in pieces from one end to the other end, and when installing the next nail-in piece, pull the waterstop rubber 8 away from the installed nail-in piece. One end of the nail-in piece penetrates the installation hole and is punched into the outer wall of the box culvert 3;

[0107] Step three: after all the nail-in pieces are installed, install the pressure joint assembly 9.

[0108] When installing the pressure joint assembly 9, the initial installation pieces that hinder the installation can be cut off; when installing the pressure joint assembly 9, the following steps are included:

[0109] Punch the anchor screw into the outer wall of the box culvert 3, and the anchor screw is spaced from the side surface of the waterstop rubber 8;

[0110] Sleeve the pressing plate on the anchor screw, one side of the pressing plate abuts against the waterstop rubber 8, and the other side of the pressing plate is provided with a leveling piece, the leveling piece is located between the pressing plate and the outer wall of the box culvert 3, so that the pressing plate is perpendicular to the anchor screw;

[0111] Install and tighten the nut from the free end of the anchor screw, so that the pressing plate extrudes the waterstop rubber 8.

[0112] By using the way of penetrating the initial installation member with the nail-in member and driving into the outer wall of the box culvert 3, the water stop rubber 8 can be conveniently and quickly fixed on the box culvert 3. The nail-in members are installed in sequence from one end to the other end, and the water stop rubber 8 is tightened when the next nail-in member is installed. The initially installed water stop rubber 8 is in a tension state in the length direction, which can make it more closely fit the outer wall of the box culvert 3, thereby reducing the wrinkle structure and improving the sealing effect. After the installation of the nail-in member is completed, the water stop rubber 8 is fixed by using the edge pressing assembly 9, which can further improve the connection strength and sealing effect of the water stop rubber 8 and the box culvert 3.

[0113] Embodiment 5

[0114] The underwater box culvert sealing method provided in this embodiment uses the sealing structure as described in Embodiment 1, which includes at least two box culverts 3, and a joint 4 exists between the adjacent two box culverts 3. The locking member 52 is a nut, and the locking member 52 is threadedly matched with the tensioning member 51. The method includes the following steps:

[0115] S1. The tensioning member 51 is made to penetrate the connecting hole 15, and one end of the tensioning member 51 provided with the clamping member 54 is made to extend into the box culvert 3 from the outside of the joint 4, so that the clamping member 54 is clamped on the inside of the box culvert 3.

[0116] S2. The sealing member is moved relative to the tensioning member 51 until the sealing member is partially inserted into the joint 4, and the locking member 52 is installed.

[0117] S3. The locking member 52 is moved relative to the tensioning member 51 towards the inside of the box culvert 3, the sealing member is pushed into the joint 4 by the locking member 52, and the end head 1 is completely inserted into the joint 4.

[0118] The underwater box culvert sealing method provided in this embodiment uses the movement of the locking member 52 relative to the tensioning member 51 to push the sealing member further into the joint 4, which can provide a clear force point for the installation of the sealing member and reduce the difficulty of underwater installation. The locking member 52 is a nut, and the sealing member can be moved by screwing the locking member 52, so that the torsional force can replace the pushing and pulling force to push the sealing member. The installation operation can be conveniently performed by using a wrench or an electric wrench, which can greatly reduce the installation difficulty.

[0119] Embodiment 6

[0120] The underwater box culvert sealing method provided in this embodiment is based on the sealing structure as described in Embodiment 3, which includes at least two box culverts 3, and a joint 4 exists between the adjacent two box culverts 3.

[0121] The method includes the following steps:

[0122] A1. The sealing member with the folding angle 7 is installed at the corner of the box culvert 3, and the end head 1 and the tail wing 2 are at least partially inserted into the joint 4.

[0123] A2. Install the blocking members on the side edges of the box culvert 3 in order from the corners of the box culvert 3 away;

[0124] A3. Install the blocking members on the top of the box culvert 3 in order from the two sides to the middle, and cut the blocking member at the middle joint to adapt to the joint length.

[0125] The underwater box culvert blocking method provided by the embodiment can realize underwater blocking of the joint 4 at a low cost based on the box culvert blocking system as described above; the blocking members are installed in a segmented manner, which can reduce the operation difficulty; and the blocking members are installed in order from the corners to the two sides, which is convenient for controlling the installation precision.

[0126] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lost circulation structure, characterized in that, The structure comprises a blocking member and a tensioning member (51), wherein: The blocking member comprises an integral end head (1) and two tail wings (2), both of which are located on the same side of the end head (1) and have a gap interval (21) between them, and: one of the tail wings (2) at least partially protrudes from a first side (11) of the end head (1), and the other tail wing (2) at least partially protrudes from a second side (12) of the end head (1) opposite to the first side (11), and the blocking member is made of rubber with a Shore A hardness greater than or equal to 50 degrees; The end head (1) is provided with a through connecting hole (15) located between the two tail wings (2), and the connecting hole (15) comprises a first opening (16) and a second opening (17), and the first opening (16) is in communication with the gap interval (21); The tensioning member (51) penetrates the connecting hole (15), and the part of the tensioning member (51) located outside the first opening (16) is connected with a locking member (52), and the part of the tensioning member (51) located outside the second opening (17) is provided with a clamping member (54).

2. The patch of claim 1, wherein The locking member (52) can move along the tensioning member (51), and the outer diameter of the locking member (52) is greater than the hole diameter of the first opening (16).

3. The structure according to claim 2, wherein: The locking member (52) is a nut, and the locking member (52) is threadedly connected with the tensioning member (51); And / or, In the cross section of the blocking member: the end head (1) comprises a large end (13) and a small end (14), and the tail wing (2) is connected to the large end (13).

4. The patch of claim 1, wherein The two tail wings (2) are symmetrically arranged along the axis of the connecting hole (15); the outer side of the tail wing (2) is connected with the side of the end head (1); The axis of the connecting hole (15) is parallel to the cross section of the end head (1); and at least two connecting holes (15) are arranged at intervals along the length direction of the end head (1).

5. The structure according to claim 1, wherein: The Shore A hardness of the end head (1) and the tail wing (2) is 55-65 degrees; And / or, The included angle between the tail wing (2) and the axis of the connecting hole (15) is 5-20°.

6. An underwater box culvert plugging system, characterized by, The structure comprises at least two box culverts (3) and the structure according to any one of claims 1-5, and there is a joint (4) between adjacent two box culverts (3), the end head (1) and the tail wing (2) are at least partially inserted into the joint (4), and the two tail wings (2) are respectively tightly attached to the two side walls (41) of the joint (4); the transverse width of the clamping member (54) is greater than the width of the joint (4), and the clamping member (54) is clamped to the inner side of the box culvert (3).

7. The underwater box culvert plugging system of claim 6, wherein, The maximum transverse distance between the outer sides of the two tail wings (2) in the initial state is greater than the width of the joint (4).

8. The underwater box culvert plugging system of claim 6, wherein, The blocking member is arranged continuously along the length direction of the joint (4), and the tensioning member (51) is arranged at intervals along the length direction of the joint (4).

9. The underwater box culvert plugging system of claim 6, wherein, At least two blocking members are arranged along the length direction of the joint (4), and a foam board (6) is filled between adjacent blocking members; at least part of the blocking members have a folding corner (7) matched with the corner of the box culvert (3).

10. An underwater box culvert sealing method, characterized by, The leaking stop structure is used in a structure comprising at least two box culverts (3), and a joint (4) exists between adjacent two box culverts (3), the locking member (52) is a nut, and the locking member (52) is threadedly matched with the tensioning member (51); The method comprises the following steps: S1. The tensioning member (51) is made to penetrate the connecting hole (15), and one end of the tensioning member (51) provided with a clamping member (54) is made to extend into the box culvert (3) from the outside of the joint (4) so that the clamping member (54) is clamped in the inside of the box culvert (3); S2. The blocking member is made to move relative to the tensioning member (51) until the blocking member is partially inserted into the joint (4), and the locking member (52) is installed; S3. The locking member (52) is made to move relative to the tensioning member (51) towards the inside of the box culvert (3), and the blocking member is made to be pushed into the joint (4) by the locking member (52) until the end head (1) is completely inserted into the joint (4).

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