CN107190777B - Butt joint system and butt joint method for final joint of immersed tunnel - Google Patents
Butt joint system and butt joint method for final joint of immersed tunnel Download PDFInfo
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- CN107190777B CN107190777B CN201710521316.9A CN201710521316A CN107190777B CN 107190777 B CN107190777 B CN 107190777B CN 201710521316 A CN201710521316 A CN 201710521316A CN 107190777 B CN107190777 B CN 107190777B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
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Abstract
The invention provides a butt joint system and a butt joint method for a final joint of a immersed tube tunnel, which are used for connecting the final joint between two sections of pipe sections to be butted. The docking system comprises a docking guide device, wherein the docking guide device comprises a transverse guide assembly and a longitudinal guide assembly; the transverse guide assembly further comprises a transverse guide rod connected to the final joint, and a transverse guide frame connected to the pipe section to be butted, and the transverse guide frame is matched with the transverse guide rod; the longitudinal guide assembly further comprises a longitudinal guide rod connected to the final joint, and a longitudinal guide frame connected to the pipe sections to be butted, wherein the longitudinal guide frame is matched with the longitudinal guide rod. The butt joint system and the butt joint method can realize accurate positioning of the final joint in the transverse direction and the longitudinal direction, the final joint with shorter length is not needed, the difficulty in water stopping is reduced, and the construction efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of immersed tube tunnel construction, and particularly relates to a system and a method for butting final joints of an immersed tube tunnel.
Background
In the pipe section installation of the immersed tunnel, in order to enable the last section of the pipe section to be smoothly immersed, a distance space which is longer than the pipe section is required to be reserved. When the last pipe section is sunk, the end face of the last pipe section is connected with the previous pipe section through a connecting structure, and the connecting structure is the final joint.
At present, a common method for butting the final joint with the pipe sections to be butted at two sides is as follows: firstly, the final joint is sunk between the pipe sections to be butted at two sides, the axis of the final joint is superposed with the axes of the pipe sections to be butted at two sides through the butting guide device, and the transverse positioning of the final joint is completed. And then, temporarily stopping water in a gap between two end faces of the final joint and the pipe sections on two sides through a push-type water stopping device arranged in the final joint. And finally, respectively welding two ends of the final joint and the pipe sections at two sides through underwater manual operation to finish permanent water stopping.
However, such existing final joint butt methods still have some disadvantages, such as: the existing butt joint guide device can only realize the transverse positioning of the final joint, but cannot accurately position in the longitudinal direction, so that the construction efficiency is low; moreover, in order to avoid collision of the final joint with the pipe sections on both sides, the final joint with a slightly shorter length is usually adopted, so that after the final joint is in place in the longitudinal direction, gaps between two end faces of the final joint and the pipe sections on both sides are larger, and water stopping difficulty is high.
Therefore, how to improve the construction efficiency of the final joint butt joint and reduce the water stopping difficulty is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the technical problems of low construction efficiency and high water stopping difficulty of the existing final joint butt joint method, the invention provides a final joint butt joint system and a butt joint method for an immersed tunnel, which can realize accurate positioning of a final joint in the transverse direction and the longitudinal direction, do not need to adopt a final joint with a short length, reduce the water stopping difficulty and improve the construction efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a docking system for a final joint of a immersed tunnel is used for connecting the final joint between two sections of pipe sections to be docked and comprises a docking guide device, wherein the docking guide device comprises a transverse guide assembly and a longitudinal guide assembly; the transverse guide assembly further comprises a transverse guide rod connected to the final joint, and a transverse guide frame connected to the pipe section to be butted, and the transverse guide frame is matched with the transverse guide rod; the longitudinal guide assembly further comprises a longitudinal guide rod connected to the final joint, and a longitudinal guide frame connected to the pipe sections to be butted, wherein the longitudinal guide frame is matched with the longitudinal guide rod.
Preferably, the transverse guide rod is arranged along the axial direction of the final joint, one end of the transverse guide rod is cantilevered to the final joint, and the other end of the transverse guide rod is detachably connected to the top of the final joint.
Preferably, the longitudinal guide rod is arranged in a direction perpendicular to the transverse guide rod, the longitudinal guide rod is connected to the final joint through a connecting piece, one end of the connecting piece is cantilevered to the final joint, and the other end of the connecting piece is detachably connected to the top of the final joint.
Preferably, the transverse guide frame is provided with a transverse limiting groove capable of accommodating the transverse guide rod, and the longitudinal guide frame is provided with a longitudinal limiting groove capable of accommodating the longitudinal guide rod.
Preferably, the immersed tube tunnel final joint butt joint system further comprises a water stopping device, the water stopping device comprises a first water stopping assembly arranged between the final joint and the end faces of the two sides of the joint of the pipe section to be butted, the first water stopping assembly further comprises an expandable first water stopping bag and a first water stopping groove capable of accommodating the first water stopping bag; the first water stopping bag is fixedly connected with the end face of one side of the joint of the final joint and the pipe section to be butted, and the first water stopping groove is oppositely arranged on the end face of the other side of the joint of the final joint and the pipe section to be butted.
Preferably, the water stopping device further comprises a pouring water stopping area formed among the first water stopping assembly, the end face steel plate of the final joint and the end face steel plate of the pipe section to be butted, and a pouring pipe communicated with the pouring water stopping area.
Preferably, the water stopping device further comprises a second water stopping assembly arranged outside the joint of the final joint and the pipe section to be butted, and the second water stopping assembly further comprises an expandable second water stopping bag and a second water stopping groove capable of accommodating the second water stopping bag; the second water stopping bag is fixedly connected to the edge of the end face of one side of the joint of the final joint and the pipe section to be butted, and the second water stopping groove is oppositely arranged on the edge of the end face of the other side of the joint of the final joint and the pipe section to be butted.
Preferably, the first waterproof bag and/or the second waterproof bag are made of geotextile or rubber.
The invention also provides a butt joint method for a final joint of a butt joint system of a immersed tube tunnel by using any one of the technical schemes, which comprises the following steps:
sinking the final joint between two sections of pipe sections to be butted by using a crane ship, and controlling the transverse position and the longitudinal position of the final joint by using a transverse guide assembly and a longitudinal guide assembly in a butting system in the sinking process;
inflating or grouting a first water stopping bag of a water stopping device in a docking system to enable the first water stopping bag to expand to fill the first water stopping groove;
and pouring concrete into a pouring water stop area in the water stopping device by using a pouring pipe in the water stopping device, so that the final joint and the pipe sections to be butted at two sides are connected into a whole.
Preferably, after the first water stopping bag is inflated or grouted, a second water stopping bag in the water stopping device is inflated or grouted, so that the second water stopping bag is expanded to fill the second water stopping groove.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the immersed tube tunnel final joint butt joint system, the transverse guide assembly and the longitudinal guide assembly are arranged, so that the final joint can be quickly and accurately positioned in the transverse direction and the longitudinal direction, and the construction efficiency is improved;
2. according to the immersed tube tunnel final joint butt joint system, a final joint with a short length is not needed, gaps between two end faces of the final joint and pipe sections to be butted on two sides are reduced, and water stopping difficulty is reduced;
3. the butt joint method provided by the invention is adopted to carry out final joint butt joint, the construction efficiency is high, the cost is low, the control is easy, the construction quality is good, in addition, the underwater operation is not required, and the construction risk is low.
Drawings
Fig. 1 is a front view of a final joint docking system of a immersed tunnel according to an embodiment of the present invention;
fig. 2 is a top view of a final joint docking system of a immersed tunnel according to an embodiment of the present invention;
FIG. 3 is a front view of a final joint provided with transverse and longitudinal guide rods in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a pipe section to be butted together, provided with a transverse guide frame and a longitudinal guide frame, according to an embodiment of the present invention;
FIG. 5 is a left side view of a pipe section to be butted together, provided with a transverse guide frame and a longitudinal guide frame, according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a water stopping device provided in an embodiment of the present invention;
FIG. 7 is a schematic end view of a final joint provided by an embodiment of the present invention;
FIG. 8 is a schematic end view of a pipe section to be butted according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a final joint docking system suitable for a square box type final joint according to an embodiment of the present invention;
in the above figures: 1. a final splice; 2. a pipe section to be butted; 3. a docking guide; 31. a lateral guide assembly; 311. a lateral guide bar; 312. a transverse guide frame; 3121. a transverse limiting groove; 32. a longitudinal guide assembly; 321. a longitudinal guide bar; 322. a longitudinal guide frame; 3221. a longitudinal limit groove; 323. a connecting member; 4. a water stopping device; 41. a first water stop assembly; 411. a first water stop bladder; 412. a first water stop tank; 42. a second water stop assembly; 421. a second water stop bag; 422. a second water stop tank; 43. pouring a water stop area; 44. pouring a pipe; 45. the water stopping component is pushed.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the positional relationship shown in fig. 1 only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the invention relates to a docking system for a final joint of a immersed tunnel, which is used for connecting a final joint 1 between two pipe sections 2 to be docked, and comprises a docking guide device 3, wherein the docking guide device 3 comprises a transverse guide assembly 31 and a longitudinal guide assembly 32; the transverse guide assembly 31 further comprises a transverse guide rod 311 connected to the final coupling 1, and a transverse guide frame 312 connected to the pipe section 2 to be butted, the transverse guide frame 312 being matched with the transverse guide rod 311; the longitudinal guide assembly 32 further comprises a longitudinal guide rod 321 connected to the final fitting 1, and a longitudinal guide bracket 322 connected to the pipe section 2 to be butted, the longitudinal guide bracket 322 being matched with the longitudinal guide rod 321.
As shown in fig. 1 and fig. 2, it should be noted that the transverse guide assembly 31 in the docking system is used to control the transverse position of the final joint 1, and when the final joint 1 is lowered, only the transverse guide rod 311 is required to be connected with the transverse guide frame 312 in a matching manner, so that the axis of the final joint 1 can be coincident with the axis of the pipe segments 2 to be docked on both sides, and the accurate position of the final joint 1 in the transverse direction is ensured. Similarly, the longitudinal guide assembly 32 in the docking system is used to control the longitudinal position of the final joint 1, and when the final joint 1 is sunk, the final joint 1 can be located at the middle of the pipe sections 2 to be docked on both sides only by matching and connecting the longitudinal guide rod 321 with the longitudinal guide frame 322, so as to ensure that the final joint 1 is accurately located in the longitudinal direction. Therefore, the transverse guide assembly 31 and the longitudinal guide assembly 32 can realize accurate positioning of the final joint 1 in the transverse direction and the longitudinal direction, the length of the final joint 1 adopted by the invention can be equivalent to the distance between the pipe sections 2 to be butted at two sides, the final joint with shorter length is not required, the gap between two end faces of the final joint 1 and the pipe sections 2 to be butted at two sides is reduced, and the water stopping difficulty is reduced. It will be appreciated that in order to ensure that the final joint 1 is connected between two pipe sections 2 to be butted, a transverse guide assembly 31 and a longitudinal guide assembly 32 are provided between the final joint 1 and the pipe sections 2 to be butted on both sides.
Specifically, as shown in fig. 2 and 3, the lateral guide rod 311 is disposed along the axial direction of the final joint 1, one end of the lateral guide rod 311 is cantilevered to the final joint 1, and the other end thereof is detachably connected to the top of the final joint 1. The longitudinal guide bar 321 is disposed in a direction perpendicular to the lateral guide bar 311, the longitudinal guide bar 321 is connected to the final joint 1 by a connection member 323, one end of the connection member 323 is cantilevered to the final joint 1, and the other end thereof is detachably connected to the top of the final joint 1. It should be noted that in the present embodiment, one end of the transverse guiding rod 311 is cantilevered to the final joint 1, and the purpose is to ensure that the transverse guiding rod 311 can be matched and connected with the transverse guiding frame 312 disposed on the pipe segment 2 to be butted. Further, the longitudinal guide rods 321 are cantilevered to the two sides of the final joint 1 through the connecting members 323, which is beneficial to ensuring that the longitudinal guide rods 321 are connected with the longitudinal guide frames 322 arranged on the pipe sections 2 to be butted in a matching manner. In addition, it should be noted that, as shown in fig. 2, the connecting members 323 may be connecting rods respectively connected to both ends of the longitudinal guide rod 321. It will be appreciated that a person skilled in the art may also use other configurations of the connecting member 323, for example, a connecting rod connected to the middle of the longitudinal guide rod 321 as the connecting member 323, as long as it is ensured that the longitudinal guide rod 321 is cantilevered to both sides of the final joint 1.
As shown in fig. 4 and 5, the lateral guide frame 312 has a lateral retaining groove 3121 for receiving the lateral guide rod 311, and the longitudinal guide frame 322 has a longitudinal retaining groove 3221 for receiving the longitudinal guide rod 321. Through the transverse limiting groove 3121 and the longitudinal limiting groove 3221, the transverse guide rod 311 can be quickly and accurately matched with the transverse guide frame 312, the longitudinal guide rod 321 can be quickly and accurately matched with the longitudinal guide frame 322, and the guide accuracy and the construction efficiency can be improved. It should be noted that the number of the longitudinal guiding racks 322 may be plural, as shown in fig. 5, the number of the longitudinal guiding racks 322 is exemplarily two, and two longitudinal guiding racks 322 are disposed along a direction perpendicular to the axial direction of the pipe segment 2 to be butted. Similarly, the number of the transverse guiding frames 312 may also be multiple, and a plurality of the transverse guiding frames 312 are arranged along the axial direction of the pipe segments 2 to be butted. By providing a plurality of longitudinal guide frames 322 and transverse guide frames 312, the transverse guide rod 311 and the longitudinal guide rod 321 can be fixed at multiple points, and the transverse guide rod 311 and the longitudinal guide rod 321 are prevented from being offset. It is understood that other configurations of the transverse guiding frame 312 and the longitudinal guiding frame 322 may be adopted by those skilled in the art, as long as the transverse guiding frame 312 and the longitudinal guiding frame 322 can be quickly matched with the transverse guiding rod 311 and the longitudinal guiding rod 321.
Preferably, as shown in fig. 4 and 5, the top of the lateral retaining groove 3121 is tapered along the opening direction, and the cross section thereof is Y-shaped, which is more favorable for the sliding-in of the lateral guide bar 311. Similarly, preferably, the top of the longitudinal position-limiting groove 3221 is tapered along the opening direction, and the cross section thereof is Y-shaped.
Further, in order to facilitate water stopping at the joint of the final joint 1 and the pipe segment 2 to be butted, as shown in fig. 1 and fig. 6, the butt joint system of the final joint 1 of the immersed tunnel further comprises a water stopping device 4, the water stopping device 4 comprises a first water stopping assembly 41 arranged between the end faces of both sides of the joint of the final joint 1 and the pipe segment 2 to be butted, the first water stopping assembly 41 further comprises an expandable first water stopping bag 411 and a first water stopping tank 412 capable of accommodating the first water stopping bag 411; the first water stopping bag 411 is fixedly connected to an end surface of one side of a joint of the final joint 1 and the pipe segment 2 to be butted, and the first water stopping groove 412 is oppositely arranged on an end surface of the other side of the joint of the final joint 1 and the pipe segment 2 to be butted. Adopt the sealing device 4 of this kind of structure when carrying out the stagnant water, after the final joint 1 accuracy just is located the both sides and treats to butt joint between the pipe section 2, only need make first stagnant water bag 411 inflation through modes such as aerifing or slip casting, first stagnant water bag 411 after the inflation holds in first stagnant water groove 412, extrude first stagnant water bag 411 through first stagnant water groove 412 and can realize the stagnant water, the stagnant water is effectual, and the stagnant water operation can be accomplished on water, need not the manual work and carry out the operation under water, the construction risk is little.
Specifically, as shown in fig. 6 to 8, the first water stopping groove 412 is circumferentially disposed on the end surface of the final joint 1, the first water stopping bag 411 is disposed on the end surface of the pipe segment 2 to be butted, and the first water stopping bag 411 is disposed opposite to the first water stopping groove 412. It will be understood that the first water stopping groove 412 may also be provided on the end surface of the pipe segment 2 to be butted, and correspondingly, the first water stopping bag 411 is provided on the end surface of the final joint 1.
Further, in order to realize permanent water stop at the joint of the final joint 1 and the pipe section 2 to be butted, as shown in fig. 6, the water stop device 4 further comprises a pouring water stop area 43 formed among the first water stop assembly 41, the end steel plate of the final joint 1 and the end steel plate of the pipe section 2 to be butted, and a pouring pipe 44 communicated with the pouring water stop area 43. It should be noted that the casting pipe 44 may be buried in the pipe section 2 to be butted up or the final joint 1. Concrete is poured into the pouring water stop area 43 through the pouring pipe 44, the final joint 1 and the pipe section 2 to be butted can be connected into a whole, permanent water stop at the joint is realized, the permanent water stop operation can be completed on water, manual underwater operation is not needed, and the construction risk is small.
Further, in order to enhance the water stopping effect to ensure no leakage, as shown in fig. 6-8, the water stopping device 4 further includes a second water stopping assembly 42 disposed outside the joint of the final joint 1 and the pipe segment 2 to be butted, the second water stopping assembly 42 further includes an expandable second water stopping bag 421, and a second water stopping tank 422 capable of accommodating the second water stopping bag 421; the second water stop bag 421 is fixedly connected to the edge of the end surface of one side of the joint of the final joint 1 and the pipe segment 2 to be butted, and the second water stop groove 422 is oppositely arranged on the edge of the end surface of the other side of the joint of the final joint 1 and the pipe segment 2 to be butted. It should be noted that the water stopping operation and the water stopping principle of the second water stopping assembly 42 are the same as those of the first water stopping assembly 41, and are not described herein again. Through the second water stopping assembly 42 arranged outside the joint of the final joint 1 and the pipe section 2 to be butted, the edge of the joint can be sealed, and water is effectively prevented from permeating from the edge of the joint.
Preferably, as shown in fig. 6 and 8, the first water stop sac 411 and the second water stop tank 422 are located on the same side of the connection position of the final joint 1 and the pipe segment 2 to be butted. The arrangement makes the first water stopping bag 411 and the second water stopping bag 421 staggered, which is more beneficial to enhancing the water stopping effect.
Further, in order to facilitate grouting or inflation, the first waterproof bag 411 and/or the second waterproof bag 421 are made of geotextile or rubber. It should be noted that, when the geotextile is used to make the first waterproof bag 411 and/or the second waterproof bag 421, the geotextile can be permeable to water and impermeable to slurry, so that the first waterproof bag 411 and/or the second waterproof bag 421 can be inflated by means of grouting; when the first water-stopping bag 411 and/or the second water-stopping bag 421 are made of rubber, the first water-stopping bag 411 and/or the second water-stopping bag 421 can be inflated because the rubber is airtight. Further, it is understood that the first and second waterproof bladders 411 and 421 are each provided with an injection hole for inflation or grouting and a discharge hole for air discharge or grout discharge.
When the gap between the two end surfaces of the final joint 1 and the pipe sections 2 to be butted at the two sides is large, in order to ensure the water stopping effect, as shown in fig. 6, a person skilled in the art can install a pushing water stopping assembly 45 on the last pipe section 2 to be butted, and the gap between the two end surfaces of the final joint 1 and the pipe sections 2 to be butted at the two sides is reduced by pushing the pushing water stopping assembly 45, so that further water stopping is facilitated. It should be noted that the pushing water-stopping assembly 45 is a water-stopping device commonly used in the prior art, and the structure thereof is well known to those skilled in the art and will not be described herein.
In addition, it should be noted that the final joint docking system for a immersed tunnel provided by the present invention is not only applicable to the final joint 1 of an inverted trapezoidal box type as shown in fig. 1, but also applicable to the final joint 1 of a conventional square box type as shown in fig. 9 or other types of final joints.
The invention also provides a butt joint method for butting the final joint 1 by using the butt joint system of the final joint of the immersed tube tunnel, which comprises the following steps:
s1: the final joint 1 is sunk between two pipe sections 2 to be butted by using a crane ship, and the transverse position and the longitudinal position of the final joint 1 are controlled by using a transverse guide assembly 31 and a longitudinal guide assembly 32 in a final joint butting system of the immersed tunnel in the sinking process.
In this step, it should be noted that the specific steps of controlling the transverse position and the longitudinal position of the final joint 1 through the transverse guiding assembly 31 and the longitudinal guiding assembly 32 are as follows: during the sinking process, the transverse guide rod 311 of the transverse guide assembly 31 slides into the transverse limit groove 3121 of the transverse guide frame 312, and the longitudinal guide rod 321 of the longitudinal guide assembly 32 slides into the longitudinal limit groove 3221 of the longitudinal guide frame 322. The control method can ensure that the axis of the final joint 1 is coincident with the axes of the pipe sections 2 to be butted at two sides, the final joint 1 is positioned in the middle of the pipe sections 2 to be butted at two sides, and the accurate positioning of the final joint 1 in the transverse direction and the longitudinal direction is ensured. It should be noted that during the sinking process, the final joint 1 is sunk by filling the ballast water tank in the final joint 1, and the lifting force provided by the crane ship to the final joint 1 is maintained between 200t and 500 t.
S2: and (3) inflating or grouting the first water stopping bag 411 of the water stopping device 4 in the final joint butt joint system of the immersed tube tunnel, so that the first water stopping bag 411 is expanded to fill the first water stopping groove 412.
In this step, the first water stopping bladder 411 is inflated by inflation or grouting, the inflated first water stopping bladder 411 is accommodated in the first water stopping tank 412, and water stopping can be achieved by pressing the first water stopping bladder 411 through the first water stopping tank 412. Note that grouting refers to injection of cement slurry.
S3: and pouring concrete into a pouring water stop area 43 in the water stopping device 4 by using a pouring pipe 44 in the water stopping device 4, so that the final joint 1 and the pipe sections 2 to be butted at two sides are connected into a whole.
In this step, concrete is poured into the pouring water stop area 43 through the pouring pipe 44, so that the final joint 1 and the pipe section 2 to be butted are connected into a whole, and permanent water stop at the joint is realized.
In a preferred embodiment of the present invention, in order to improve the water stopping effect, after the first water stopping bladder 411 is inflated or grouted, the method further comprises inflating or grouting the second water stopping bladder 421 in the water stopping device 4 to make the second water stopping bladder 421 expand to fill the second water stopping tank 422.
According to the immersed tube tunnel final joint butt joint system provided by the invention, the transverse guide assembly 31 and the longitudinal guide assembly 32 are arranged, so that the final joint 1 can be quickly and accurately positioned in the transverse direction and the longitudinal direction, and the construction efficiency is improved. Meanwhile, a final joint with a short length is not needed, gaps between two end faces of the final joint 1 and the pipe sections 2 to be butted on two sides are reduced, and water stopping difficulty is reduced. According to some embodiments of the invention, the expandable water stopping bag is matched with the water stopping groove for accommodating the water stopping bag, water stopping can be realized by extruding the water stopping bag through the water stopping groove, the water stopping effect is good, the water stopping operation can be completed on water, manual underwater operation is not needed, and the construction risk is small. Further, according to some embodiments of the present invention, concrete is poured into the pouring water stop area 43 through the arranged pouring pipe 44, so that the final joint 1 and the pipe segment 2 to be butted are connected into a whole, thereby realizing permanent water stop at the joint. The butt joint method provided by the invention is adopted to carry out the butt joint of the final joint 1, the construction efficiency is high, the cost is low, the control is easy, the construction quality is good, in addition, the underwater operation is not needed, and the construction risk is low.
Claims (6)
1. Immersed tube tunnel connects butt joint system finally for with final joint (1) connect in two sections wait to dock between pipe section (2), including butt joint guider (3), its characterized in that: the docking guide (3) comprises a transverse guide assembly (31) and a longitudinal guide assembly (32); the transverse guide assembly (31) further comprises a transverse guide rod (311) connected to the final joint (1), and a transverse guide frame (312) connected to the pipe section (2) to be butted, wherein the transverse guide frame (312) is matched with the transverse guide rod (311); the longitudinal guide assembly (32) further comprises a longitudinal guide rod (321) connected to the final joint (1), and a longitudinal guide frame (322) connected to the pipe section to be butted (2), wherein the longitudinal guide frame (322) is matched with the longitudinal guide rod (321); the transverse guide rod (311) is arranged along the axial direction of the final joint (1), one end of the transverse guide rod (311) is cantilevered to the final joint (1), and the other end of the transverse guide rod is detachably connected to the top of the final joint (1); the longitudinal guide rod (321) is arranged along a direction perpendicular to the transverse guide rod (311), the longitudinal guide rod (321) is connected to the final joint (1) through a connecting piece (323), one end of the connecting piece (323) is suspended from the final joint (1), and the other end of the connecting piece is detachably connected to the top of the final joint (1);
the immersed tube tunnel final joint butt joint system further comprises a water stopping device (4), the water stopping device (4) comprises a first water stopping assembly (41) arranged between the end faces of two sides of the joint of the final joint (1) and the pipe section (2) to be butted, the first water stopping assembly (41) further comprises an expandable first water stopping bag (411) and a first water stopping groove (412) capable of accommodating the first water stopping bag (411); the first water stopping bag (411) is fixedly connected to the end face of one side of the joint of the final joint (1) and the pipe section (2) to be butted, and the first water stopping groove (412) is oppositely arranged on the end face of the other side of the joint of the final joint (1) and the pipe section (2) to be butted; the water stopping device (4) further comprises a pouring water stopping area (43) formed among the first water stopping assembly (41), the end face steel plate of the final joint (1) and the end face steel plate of the pipe section (2) to be butted, and a pouring pipe (44) communicated with the pouring water stopping area (43).
2. The immersed tunnel final joint docking system according to claim 1, wherein: the transverse guide frame (312) is provided with a transverse limiting groove (3121) capable of accommodating the transverse guide rod (311), and the longitudinal guide frame (322) is provided with a longitudinal limiting groove (3221) capable of accommodating the longitudinal guide rod (321).
3. The immersed tunnel final joint docking system according to claim 1, wherein: the water stopping device (4) further comprises a second water stopping assembly (42) arranged on the outer side of the joint of the final joint (1) and the pipe section (2) to be butted, the second water stopping assembly (42) further comprises an expandable second water stopping bag (421) and a second water stopping groove (422) capable of accommodating the second water stopping bag (421); the second water stopping bag (421) is fixedly connected to the edge of the end face of one side of the joint of the final joint (1) and the pipe section (2) to be butted, and the second water stopping groove (422) is oppositely arranged on the edge of the end face of the other side of the joint of the final joint (1) and the pipe section (2) to be butted.
4. The immersed tunnel final joint butt-joint system according to claim 3, wherein: the first water stopping bag (411) and/or the second water stopping bag (421) are made of geotextile or rubber.
5. A docking method for docking a final coupling using the docking system for a final coupling of a immersed tunnel according to claim 1 or 2, comprising the steps of:
sinking the final joint (1) between two pipe sections (2) to be butted by using a crane ship, and controlling the transverse position and the longitudinal position of the final joint (1) by using a transverse guide assembly (31) and a longitudinal guide assembly (32) in a butting system in the sinking process;
inflating or grouting a first water stopping bag (411) of a water stopping device (4) in the docking system to enable the first water stopping bag (411) to be expanded to fill the first water stopping tank (412);
and pouring concrete into a pouring water stop area (43) in the water stopping device (4) by using a pouring pipe (44) in the water stopping device (4) so as to connect the final joint (1) and the pipe sections (2) to be butted at two sides into a whole.
6. A docking method for docking a final coupling using the docking system for a final coupling of a immersed tunnel according to claim 3 or 4, comprising the steps of:
sinking the final joint (1) between two pipe sections (2) to be butted by using a crane ship, and controlling the transverse position and the longitudinal position of the final joint (1) by using a transverse guide assembly (31) and a longitudinal guide assembly (32) in a butting system in the sinking process;
inflating or grouting a first water stopping bag (411) of a water stopping device (4) in the docking system to enable the first water stopping bag (411) to be expanded to fill the first water stopping tank (412); inflating or grouting a second water stopping bag (421) in the water stopping device (4) to make the second water stopping bag (421) expand to fill the second water stopping groove (422);
and pouring concrete into a pouring water stop area (43) in the water stopping device (4) by using a pouring pipe (44) in the water stopping device (4) so as to connect the final joint (1) and the pipe sections (2) to be butted at two sides into a whole.
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| CN201710521316.9A CN107190777B (en) | 2017-06-30 | 2017-06-30 | Butt joint system and butt joint method for final joint of immersed tunnel |
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| CN107190777A CN107190777A (en) | 2017-09-22 |
| CN107190777B true CN107190777B (en) | 2020-04-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109281336A (en) * | 2018-11-22 | 2019-01-29 | 中交航局第二工程有限公司 | Underwater view building and its method of construction |
| WO2022213672A1 (en) | 2021-11-15 | 2022-10-13 | 中交第一航务工程局有限公司 | Suspended-sliding-type water stop device and application thereof |
| CN114032960B (en) * | 2021-11-15 | 2023-05-05 | 中交第一航务工程局有限公司 | Suspension sliding type water stop device and application thereof |
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| CN103898922A (en) * | 2012-12-31 | 2014-07-02 | 中交第一航务工程局有限公司 | Pipe joint butt joint and guide device |
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| CN206844153U (en) * | 2017-06-30 | 2018-01-05 | 中交一航局第二工程有限公司 | Immersed tube tunnel final joint docking system |
| CN206971275U (en) * | 2017-06-30 | 2018-02-06 | 中交一航局第二工程有限公司 | Butt guiding devices for the docking of immersed tube tunnel final joint |
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| CN103898922A (en) * | 2012-12-31 | 2014-07-02 | 中交第一航务工程局有限公司 | Pipe joint butt joint and guide device |
| CN104032774A (en) * | 2014-04-29 | 2014-09-10 | 株洲时代新材料科技股份有限公司 | Real-time rubber waterstop monitoring method for immersed tunnel and rubber waterstop |
| CN105780812A (en) * | 2016-05-16 | 2016-07-20 | 苏州大学 | Immersed tunnel joint device and mounting method thereof |
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| CN206971275U (en) * | 2017-06-30 | 2018-02-06 | 中交一航局第二工程有限公司 | Butt guiding devices for the docking of immersed tube tunnel final joint |
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| CN107190777A (en) | 2017-09-22 |
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