CN113062359A - Reusable slope prefabricated immersed tube section platform device and tube section prefabricating method - Google Patents
Reusable slope prefabricated immersed tube section platform device and tube section prefabricating method Download PDFInfo
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- CN113062359A CN113062359A CN202110440320.9A CN202110440320A CN113062359A CN 113062359 A CN113062359 A CN 113062359A CN 202110440320 A CN202110440320 A CN 202110440320A CN 113062359 A CN113062359 A CN 113062359A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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Abstract
The invention provides a reusable slope prefabricated immersed tube pipe joint platform device which comprises a traction mechanism, a pipe joint prefabricated platform, a pulley mechanism and the like, wherein the pipe joint prefabricated platform is connected with the traction mechanism, the section of the pipe joint prefabricated platform is in a right-angled triangle shape, the upper end surface of the pipe joint prefabricated platform is a horizontal plane, a plurality of pulley mechanisms with locks are fixed at the lower end of the pipe joint prefabricated platform, the pulley mechanisms are positioned on a sliding rail, and the sliding rail is laid along a slope. The pipe section prefabricating method comprises the following steps: selecting a bank slope; manufacturing a platform device; prefabricating immersed tube tunnel pipe joints on the pipe joint prefabricating platform; and pushing the pipe joint prefabricating platform into water, towing the immersed tube tunnel pipe joint to be close to the tunnel site, and sinking and butting the immersed tube tunnel pipe joint. The invention adopts the pipe joint prefabrication platform, does not need to dig a large amount of construction dry dock, saves the construction cost and the construction period, and the pipe joint prefabrication platform needs small area, does not damage the environment, and leads the applicability of the immersed tunnel to be stronger. The pipe joint prefabrication platform can be recycled, and construction cost is reduced.
Description
Technical Field
The invention belongs to the technical field of immersed tube tunnels, and particularly relates to a reusable slope prefabricated immersed tube section platform device and a tube section prefabricating method.
Background
The immersed tube tunnel is an underwater tunnel built through the processes of tube section prefabrication, towing, floating transportation, sinking and butting, foundation treatment, backfilling and covering and the like. The top of the tunnel is shallow in earth covering, the length of the tunnel is short, the tunnel is more flexibly connected with roads on two sides of a water area, after the tunnel is successfully constructed, the land resources in a central urban area can be greatly saved, and the tunnel is one of the main methods for constructing inland river underwater tunnels in cities.
The traditional pipe joints are prefabricated in the dock, a foundation pit is excavated in a nearby water area in the construction process, a large dry dock is built, and after the pipe joints are prefabricated in the dry dock, the pipe joints are transported to a sinking position in a floating mode.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a reusable slope prefabricated immersed tube section platform device and a tube section prefabricating method, which have the advantages that the occupied area is small, immersed tube tunnel tube sections can be separated from a dry dock for prefabricating, large excavation on the shore is avoided, the construction procedures are reduced, and the device and the method are suitable for immersed tube tunnels of various scales.
The technical scheme adopted by the invention is as follows: the utility model provides a prefabricated immersed tube coupling platform device in repeatedly usable's slope, includes drive mechanism, the prefabricated platform of tube coupling, pulley mechanism and slide rail, the prefabricated platform of tube coupling is connected with drive mechanism, the cross-section of the prefabricated platform of tube coupling is right triangle, and its up end is the horizontal plane, and the lower extreme is fixed with a plurality of pulley mechanisms that take the lock, pulley mechanism is located the slide rail, the slide rail is laid along the slope.
Furthermore, the traction mechanism comprises an anchor block, a hydraulic jack, an anchor cable and an anchor cable guide wheel, wherein the anchor cable is wound on the hydraulic jack and the anchor cable guide wheel, one end of the anchor cable is fixed with the anchor block, and the other end of the anchor cable is fixed with the pipe joint prefabricating platform.
Furthermore, the pipe joint prefabricating platform is of a steel box structure, a steel truss is arranged inside the pipe joint prefabricating platform, and a steel plate is arranged on the upper portion of the pipe joint prefabricating platform and used for supporting the immersed tube tunnel pipe joint.
Further, the pulley mechanism comprises a pulley, a wheel frame, a spring, a bolt, a connecting rod and a clamping head, the pulley is connected with the wheel frame, the middle of the connecting rod is connected with the wheel frame, two ends of the connecting rod are respectively connected with the bolt and the clamping head, the clamping head is located beside the pulley, the bolt penetrates through the wheel frame, the lower end of the bolt is connected with the connecting rod, and the spring is sleeved on the bolt and located between the bolt cap and the wheel frame. The connecting rod is driven to rotate anticlockwise by screwing the bolt, so that the clamping head moves downwards and clings to the pulley, and the pulley is limited to rotate. The spring acts as a support bolt.
The technical scheme adopted by the invention is as follows: a pipe joint prefabricating method using a reusable slope prefabricating immersed pipe joint platform device comprises the following steps:
step 1: selecting a position of an embankment which is close to a pipe section sinking tunnel, leveling a slope and paving a sliding rail;
step 2: manufacturing a pipe joint prefabricating platform, and installing a pulley mechanism below the pipe joint prefabricating platform;
and step 3: placing the pipe joint prefabricating platform on a slope sliding rail, enabling a pulley of a pulley mechanism to be in a locking state, and anchoring the platform through a traction mechanism;
and 4, step 4: prefabricating the immersed tube tunnel pipe joint on a pipe joint prefabricating platform;
and 5: unlocking the pulley, pushing the pipe joint prefabrication platform into water through a traction mechanism, towing the immersed tunnel pipe joint to the vicinity of a tunnel site, and sinking and butting the immersed tunnel pipe joint;
step 6: the traction mechanism pulls the pipe joint prefabricating platform to return to an initial position and locks the pulley;
and 7: and (5) continuously repeating the step (4), the step (5) and the step (6) until all the immersed tunnel pipe sections are completely immersed and butted to form the immersed tunnel.
Furthermore, the length of each side of the upper end surface of the pipe section prefabricating platform in the step 2 is more than 2m longer than that of each side of the horizontal projection of the immersed tube tunnel pipe section.
Further, step 4 specifically includes finishing steel bar binding of the single-section pipe joint on the pipe joint prefabricating platform, and performing formwork erection, concrete pouring and maintenance operation on the pipe joint structure to form the immersed tube tunnel pipe joint.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the right-angled triangle pipe joint prefabricating platform is arranged on the slope, the upper end surface of the pipe joint prefabricating platform is a horizontal plane, the side length of the pipe joint prefabricating platform is larger than that of the immersed tube tunnel pipe joint, the pipe joint prefabricating platform is used as the immersed tube tunnel pipe joint prefabricating platform, large excavation and dry dock construction are not needed, the engineering cost and the construction period are saved, the required field area of the pipe joint prefabricating platform is small, the environment is not damaged, and the applicability of the immersed tube tunnel is stronger. The pipe joint prefabrication platform adopts the steel box structure, and recoverable used repeatedly reduces construction cost. And leveling slopes and laying slide rails at the position of the embankment at the position close to the tunnel site, wherein the pipe section prefabricating place is close to the position of the tunnel site, and the floating transportation distance and the channel dredging amount are reduced.
The pipe joint prefabricating platform is provided with the pulley mechanism with the lock, the pipe joint prefabricating platform is limited to move in the immersed tube tunnel pipe joint manufacturing process, meanwhile, the traction mechanism adopts the structure of the anchor block, the hydraulic jack, the anchor cable and the anchor cable guide wheel, and the hydraulic jack assists in tensioning the anchor cable and limiting the pipe joint prefabricating platform to move in the locking state of the pipe joint prefabricating platform, so that the pipe joint prefabricating platform is high in lifting controllability and beneficial to construction safety risk control.
Drawings
FIG. 1 is a schematic structural diagram of an initial position of a pipe joint prefabrication platform according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a lowering position of a pipe joint prefabricating platform according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a pulley mechanism according to an embodiment of the present invention.
In the figure, 1-a pipe joint prefabricating platform, 2-a sliding rail, 3-an anchor block, 4-a hydraulic jack, 5-an anchor cable, 6-an anchor cable guide wheel, 7-a pulley, 8-a wheel carrier, 9-a spring, 10-a bolt, 11-a connecting rod, 12-a clamping head and 13-a immersed tube tunnel pipe joint.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a reusable slope prefabricating immersed tube section platform device, which comprises a traction mechanism, a tube section prefabricating platform 1, a pulley mechanism and a sliding rail 2, and is shown in figures 1-3. The slide rail 2 is laid along the slope of the bank, and a part of the slide rail is positioned below the horizontal plane. The pipe section prefabricating platform 1 is used as a manufacturing platform of the immersed tunnel pipe section 13, and the size of the pipe section prefabricating platform is determined according to the gradient of the sliding rail 2 and the size of the immersed tunnel pipe section 13. The pipe joint prefabricating platform 1 adopts a steel box structure, a steel truss is arranged inside the pipe joint prefabricating platform, and a steel plate is arranged on the upper portion of the pipe joint prefabricating platform. The section of the pipe joint prefabrication platform 1 is in a right-angled triangle shape, the upper end face of the pipe joint prefabrication platform is a horizontal plane, and the length of each side of the upper end face is more than 2m larger than that of each side of the horizontal projection of the immersed tube tunnel pipe joint 13.
The lower end of the pipe joint prefabricating platform 1 is fixed with a plurality of pulley mechanisms with locks, and the pulley mechanisms are arranged below the worst stress position of the immersed tube tunnel pipe joint 13 and comprise pipe joint side walls and pipe joint spans in the middle position. The pulley mechanism is positioned on the sliding rail 2. Pulley mechanism includes pulley 7, wheel carrier 8, spring 9, bolt 10, connecting rod 11 and dop 12, pulley 7 is connected with wheel carrier 8, connecting rod 11 middle part is connected with wheel carrier 8, and both ends are connected with bolt 10, dop 12 respectively, dop 12 is located by pulley 7, bolt 10 runs through wheel carrier 8, and the lower extreme is connected with connecting rod 11, and spring 9 cover is in on the bolt 10 to be located between bolt cap and the wheel carrier 8. As shown in fig. 3, the pulley mechanism is in an unlocked state, and the bolt 10 is tightened to drive the connecting rod 11 to rotate counterclockwise, so that the chuck 12 moves downward and clings to the pulley 7, thereby limiting the rotation of the pulley 7 and converting the pulley mechanism into a locked state. The spring 9 functions as a support bolt 10.
The traction mechanism comprises an anchor block 3, a hydraulic jack 4, an anchor cable 5 and an anchor cable guide wheel 6, wherein the anchor block 3, the hydraulic jack 4 and the anchor cable guide wheel 6 are fixed on the bank. The anchor cable 5 is wound on the hydraulic jack 4 and the anchor cable guide wheel 6, one end of the anchor cable 5 is fixed with the anchor block 3, and the other end of the anchor cable is fixed with the pipe joint prefabrication platform 1. The hydraulic jack 4 is used for assisting in tensioning the anchor cable 5, and the pipe section prefabricating platform 1 can be controlled to lift through the hydraulic jack 4.
The embodiment of the invention also provides a pipe joint prefabricating method using the reusable slope prefabricating immersed pipe joint platform device, which comprises the following steps:
step 1: selecting a position of an embankment which is close to a pipe section sinking tunnel site, leveling a slope and paving a sliding rail 2 and a foundation structure;
step 2: manufacturing a pipe section prefabricating platform 1, wherein the length of each side of the upper end surface of the pipe section prefabricating platform 1 is more than 2m greater than that of each side of the horizontal projection of the immersed tube tunnel pipe section 13, and a pulley mechanism is arranged below the pipe section prefabricating platform 1;
and step 3: placing the pipe joint prefabricating platform 1 on a slope sliding rail 2, enabling pulleys 7 of all pulley mechanisms to be in a locking state, and anchoring the platform through a traction mechanism;
and 4, step 4: prefabricating the immersed tube tunnel pipe joint 13 on the pipe joint prefabricating platform 1, which specifically comprises the following steps: binding steel bars of single-section pipe joints on the pipe joint prefabricating platform 1, and performing formwork erection, concrete pouring and maintenance operation on a pipe joint structure to form a immersed tube tunnel pipe joint 13; as shown in fig. 1;
and 5: unlocking the pulley 7, and pushing the pipe joint prefabrication platform 1 into water through a traction mechanism, as shown in fig. 2; towing the immersed tunnel pipe joint 13 to the position near the tunnel site, and sinking and butting the immersed tunnel pipe joint 13;
step 6: the traction mechanism pulls the pipe joint prefabrication platform 1 to return to the initial position, and the pulley 7 is locked;
and 7: and (5) continuously repeating the step (4), the step (5) and the step (6) until all the immersed tunnel pipe sections (13) are immersed and butted, thus forming the immersed tunnel.
The present invention has been described in detail with reference to the embodiments, but the description is only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The scope of the invention is defined by the claims. The technical solutions of the present invention or those skilled in the art, based on the teaching of the technical solutions of the present invention, should be considered to be within the scope of the present invention, and all equivalent changes and modifications made within the scope of the present invention or equivalent technical solutions designed to achieve the above technical effects are also within the scope of the present invention.
Claims (7)
1. The utility model provides a prefabricated immersed tube coupling platform device in reusable slope which characterized in that: the pipe joint prefabricating platform is connected with the traction mechanism, the section of the pipe joint prefabricating platform is in a right-angled triangle shape, the upper end face of the pipe joint prefabricating platform is a horizontal plane, a plurality of pulley mechanisms with locks are fixed at the lower end of the pipe joint prefabricating platform, the pulley mechanisms are located on the slide rails, and the slide rails are laid along slopes.
2. The reusable slope prefabricating immersed tube segment platform apparatus as in claim 1, wherein: the traction mechanism comprises an anchor block, a hydraulic jack, an anchor cable and an anchor cable guide wheel, wherein the anchor cable is wound on the hydraulic jack and the anchor cable guide wheel, one end of the anchor cable is fixed with the anchor block, and the other end of the anchor cable is fixed with the pipe section prefabricating platform.
3. The reusable slope prefabricating immersed tube segment platform apparatus as in claim 1, wherein: the pipe joint prefabricating platform is of a steel box structure, a steel truss is arranged inside the pipe joint prefabricating platform, and a steel plate is arranged on the upper portion of the pipe joint prefabricating platform and used for supporting the immersed tube tunnel pipe joint.
4. The reusable slope prefabricating immersed tube segment platform apparatus as in claim 1, wherein: the pulley mechanism comprises a pulley, a wheel carrier, a spring, a bolt, a connecting rod and a clamping head, the pulley is connected with the wheel carrier, the middle of the connecting rod is connected with the wheel carrier, two ends of the connecting rod are respectively connected with the bolt and the clamping head, the clamping head is located beside the pulley, the bolt penetrates through the wheel carrier, the lower end of the bolt is connected with the connecting rod, and the spring is sleeved on the bolt and located between a bolt cap and the wheel carrier.
5. A pipe joint prefabrication method using the reusable slope prefabrication immersed pipe joint platform device of any one of claims 1 to 4, characterized in that: the method comprises the following steps:
step 1: selecting a position of an embankment which is close to a pipe section sinking tunnel, leveling a slope and paving a sliding rail;
step 2: manufacturing a pipe joint prefabricating platform, and installing a pulley mechanism below the pipe joint prefabricating platform;
and step 3: placing the pipe joint prefabricating platform on a slope sliding rail, enabling a pulley of a pulley mechanism to be in a locking state, and anchoring the platform through a traction mechanism;
and 4, step 4: prefabricating the immersed tube tunnel pipe joint on a pipe joint prefabricating platform;
and 5: unlocking the pulley, pushing the pipe joint prefabrication platform into water through a traction mechanism, towing the immersed tunnel pipe joint to the vicinity of a tunnel site, and sinking and butting the immersed tunnel pipe joint;
step 6: the traction mechanism pulls the pipe joint prefabricating platform to return to an initial position and locks the pulley;
and 7: and (5) continuously repeating the step (4), the step (5) and the step (6) until all the immersed tunnel pipe sections are completely immersed and butted to form the immersed tunnel.
6. A method of prefabricating a pipe section according to claim 5, wherein: and 2, the length of each side of the upper end surface of the pipe section prefabricating platform in the step 2 is more than 2m longer than that of each side of the horizontal projection of the immersed tube tunnel pipe section.
7. A method of prefabricating a pipe section according to claim 5, wherein: and step 4, finishing the reinforcement of the single-section pipe joint on the pipe joint prefabricating platform, and performing pipe joint structure formwork erection, concrete pouring and maintenance operation to form the immersed tube tunnel pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440320.9A CN113062359A (en) | 2021-04-23 | 2021-04-23 | Reusable slope prefabricated immersed tube section platform device and tube section prefabricating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440320.9A CN113062359A (en) | 2021-04-23 | 2021-04-23 | Reusable slope prefabricated immersed tube section platform device and tube section prefabricating method |
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| Publication Number | Publication Date |
|---|---|
| CN113062359A true CN113062359A (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110440320.9A Pending CN113062359A (en) | 2021-04-23 | 2021-04-23 | Reusable slope prefabricated immersed tube section platform device and tube section prefabricating method |
Country Status (1)
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| CN (1) | CN113062359A (en) |
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- 2021-04-23 CN CN202110440320.9A patent/CN113062359A/en active Pending
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