Large-tonnage pier body prefabrication, transportation and construction method, integrated platform and system

Abstract

The present application relates to a kind of large tonnage pier body prefabricated delivery construction method and integrated platform, system belongs to the transportation technical field of concrete member.The large tonnage pier body prefabricated delivery is carried out through integrated platform, and construction method includes pier body prefabrication, pier body storage, pier body fixation, pier body delivery, pier body installation, platform return step.The large tonnage pier body prefabricated delivery construction method and integrated platform, system, pier body prefabrication, storage, fixation, delivery, installation and platform return are all completed by same integrated platform, avoid the multiple handling and reloading between pier body in prefabrication, storage, delivery link, reduce transfer link and hoisting equipment investment.

Description

Technical Field

[0001] This invention belongs to the field of concrete component transportation technology, specifically relating to a construction method and integrated platform / system for the prefabrication and transportation of large-tonnage pier bodies. Background Technology

[0002] The piers of cross-sea bridges are mostly located in areas of fluctuating sea levels and splash zones, resulting in a complex working environment. To meet requirements for structural load-bearing capacity, stiffness, impact resistance, and durability, the piers are typically constructed using prestressed or reinforced concrete structures. Due to the harsh marine construction environment, low construction efficiency, and poor quality control, pier construction often employs segmented prefabrication, semi-submersible barge floating transport, and crane vessel hoisting. Prefabricated piers are massive in size and can weigh thousands of tons, making conventional truck cranes, crawler cranes, and gantry cranes insufficient for their transport needs. Therefore, a prefabricated pier transport platform system plays a crucial role in the entire process of pier prefabrication, transport, storage, shipment, and on-site hoisting.

[0003] Existing transfer platform systems mostly employ concrete, steel-concrete composite, or conventional steel structures to bear various loads during the construction of precast piers. These platforms must withstand the large-tonnage dead loads of the precast pier structure, the platform's own weight, formwork loads, hoisting loads, wind loads, and transport inertial forces. However, due to the limited tonnage capacity of semi-submersible barges, existing solutions generally suffer from excessive self-weight, high structural redundancy, and low load-bearing efficiency. This makes it difficult to effectively control the platform's self-weight while ensuring the safe transfer of large-tonnage piers, thus limiting transport efficiency and construction economy.

[0004] Therefore, there is an urgent need to provide a transfer platform system suitable for large-tonnage precast piers. Under the premise of ensuring structural bearing capacity, overall rigidity and operational safety, the platform's self-weight should be reduced to the minimum to adapt to the tonnage restrictions of semi-submersible barges and meet the usage requirements of the entire process of pier prefabrication, transfer, storage, shipment and hoisting. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a construction method and integrated platform / system for the prefabrication and transportation of large-tonnage pier bodies. The prefabrication, storage, fixing, transportation, installation, and platform return of the pier body are all completed through the same integrated platform, avoiding multiple transfers and reloading of the pier body between the prefabrication, storage, and transportation stages, and reducing the investment in transfer links and hoisting equipment.

[0006] This invention provides a method for the prefabrication and transportation of large-tonnage pier bodies. The prefabrication and transportation of large-tonnage pier bodies is carried out through an integrated platform, including the following steps: Pier prefabrication: The integrated platform is moved to the top of the prefabrication area platform, and templates are set on the integrated platform to carry out pier prefabrication; Pier storage: After the pier prefabrication meets the design requirements, the trolley enters the prefabrication area. The trolley is equipped with a group of jacks, which are used to lift the prefabricated pier and formwork. The trolley then transports the integrated platform to the temporary support pier in the storage area. Pier fixing: Connect and fix the inner cavity sidewall of the pier to the integrated platform; Pier body transport: The trolley pushes the integrated platform along the track on the semi-submersible barge to the underside of the semi-submersible barge support beam. The integrated platform carrying the pier body is moved to the top of the semi-submersible barge support beam by the jack group. The jack group then falls back down, allowing the integrated platform to land on the semi-submersible barge support beam. Pier installation: The pier body is transported to the offshore construction site by a semi-submersible barge carrying an integrated platform, and then installed by a floating crane. Platform Return: The semi-submersible barge, equipped with an integrated platform, returns to the prefabrication area to begin the next construction cycle.

[0007] In this technical solution, the prefabrication, storage, fixing, transportation, installation and platform return of the pier body are all completed through the same integrated platform, avoiding multiple transfers and reloadings of the pier body between the prefabrication, storage and transportation stages, and reducing the investment in transfer links and hoisting equipment.

[0008] In some embodiments, during the pier storage step, the trolley enters the prefabrication area via the first track, and after the prefabricated pier and template are lifted by a group of jacks, the trolley transports the integrated platform along the first track to the temporary support pier in the storage area.

[0009] This technical solution uses temporary supports to bear the entire weight of the integrated platform and the support body in the storage area, allowing the trolley to be removed for other operations after transportation is completed, thus improving the utilization efficiency of the trolley.

[0010] In some embodiments, during the prefabrication of the pier body, pre-embedded bolts are installed on the side wall of the inner cavity of the pier body; during the pier body fixing step, the method for connecting and fixing the side wall of the inner cavity of the pier body to the integrated platform includes: after workers reach the bottom of the inner cavity of the pier body through the manhole passage reserved in the integrated platform, they climb to the pre-embedded bolts and fix the pre-embedded bolts to the inner reinforcement unit of the integrated platform.

[0011] This technical solution utilizes pre-embedded bolts as fixed connection points to achieve a detachable rigid connection between the pier body and the integrated platform; the reserved manhole passage provides workers with a physical path to enter the lower part of the pier body's inner cavity.

[0012] In some embodiments, the method for workers to climb to the pre-embedded bolts includes: workers reaching the bottom of the inner reinforcing rod through a manhole, climbing to the bottom of the inner formwork through a ladder erected under the inner formwork of the pier, and then climbing to the pre-embedded bolts through a support rod set on the inner formwork.

[0013] This technical solution solves the problem that workers have difficulty reaching the location of the pre-embedded bolts when the internal space of the pier is small and there are no fixed climbing facilities.

[0014] In some embodiments, the method for moving the integrated platform to the semi-submersible barge during the pier transport step includes: the trolley moves along the second track to below the integrated platform, uses a group of jacks to lift the integrated platform, and moves the integrated platform along the second track to a temporary support pier on the wharf ramp. The inclined car is positioned at the top of the ramp. Then, the trolley moves the integrated platform along the first track to the inclined car. The inclined car carrying the integrated platform is lowered to the semi-submersible barge using a winch at the top of the ramp, and the inclined car track is aligned with the semi-submersible barge track.

[0015] In some embodiments, the pier storage step further includes: applying anti-corrosion coating and landscape coating to the pier, and fixing the pier after the storage time has reached the design requirements.

[0016] Based on the above-mentioned method for the prefabrication and transportation of large-tonnage pier bodies, this invention also provides an integrated platform for the prefabrication and transportation of large-tonnage pier bodies, applied to the above-mentioned method for the prefabrication and transportation of large-tonnage pier bodies, including: The first track has two parallel tracks. Each first track includes a horizontally arranged first base plate and a first top plate. The area under the first base plate is used for the passage of a trolley. The second track has two sections, which are parallel to each other and perpendicular to the first track. The two first tracks and the two second tracks are arranged in a grid pattern on the plane. Each second track includes a horizontally arranged second bottom plate and a second top plate. The area under the second bottom plate is used for the passage of a trolley. The trolley consists of several trolleys, each equipped with a jack on its top. The tops of the trolleys together form a jack group, which is used to lift the first or second track. The diaphragm is arranged in a mesh pattern in the plane where the top surfaces of the first and second tracks are located, and is also arranged between the first top plate and the first bottom plate and between the second top plate and the second bottom plate. The two first tracks, the two second tracks and the diaphragm together form the load-bearing frame of the integrated platform. The template includes an inner template, which is located at the center of the intersection of the two first tracks and the two second tracks; The inner reinforcing rod is set inside the inner template to fix the precast pier body to the integrated platform; the inner cavity of the precast pier body is equipped with embedded bolts, the bottom of the inner reinforcing rod is connected to the first track or the second track, and the top is connected to the embedded bolts.

[0017] This technical solution provides a safe and reliable structural foundation for the entire process of the pier body from prefabrication to sea transport.

[0018] In some embodiments, transverse partitions are provided between the first bottom plate and the first top plate, and between the second bottom plate and the second top plate, and manholes are provided in the transverse partitions, the first top plate, the second top plate, and the transverse partitions.

[0019] This technical solution provides personnel access and operating space for the connection of internal reinforcement rods, the inspection and maintenance of internal platform components, and possible future maintenance work.

[0020] In some embodiments, the integrated platform for the prefabrication and transportation of large-tonnage piers also includes a ladder. When the pier is fixed, the ladder is erected below the inner template of the pier; after the pier is fixed, the ladder is suspended and stored inside the inner template.

[0021] Based on the aforementioned integrated platform for the prefabrication and transportation of large-tonnage piers, the present invention also provides an integrated system for the prefabrication and transportation of large-tonnage piers. The integrated system for the prefabrication and transportation of large-tonnage piers includes the aforementioned integrated platform for the prefabrication and transportation of large-tonnage piers, and also includes several temporary supports for temporarily supporting the integrated platform. Temporary supports are provided in the storage area and the wharf ramp.

[0022] This technical solution enables the integrated platform to transfer the entire weight of the platform and the pier to temporary supports during the storage stage after the pier body is prefabricated, and during the waiting stage on the wharf ramp before the pier body is shipped. This allows the trolley to be removed from under the platform and put into other transportation tasks, avoiding the trolley being occupied for a long time.

[0023] Based on the above solution, the construction method and integrated platform / system for the prefabrication and transportation of large-tonnage piers in this embodiment of the invention completes the prefabrication, storage, fixing, transportation, installation, and platform return of the piers all through the same integrated platform. This avoids multiple transfers and reloadings of the piers during the prefabrication, storage, and transportation stages, reducing the need for transfer links and hoisting equipment. The trolley and jack group work together to achieve synchronous lifting and overall movement of the integrated platform and the piers during the pier storage and transportation steps, avoiding localized stress concentration and ensuring structural safety during transportation. The pier fixing step connects the inner wall of the pier to the platform, forming an integrated load-bearing system during sea transportation, effectively preventing pier overturning. The platform return step allows for repeated use of the platform, reducing construction costs. This solution meets the usage requirements for the entire process of prefabrication, transportation, storage, transportation, and hoisting of large-tonnage piers. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a plan view of a trolley installed below the first track of the integrated system for prefabricating and transporting large-tonnage pier bodies in an embodiment of the present invention. Figure 2 This is a plan view of a trolley installed below the second track of the integrated system for prefabricating and transporting large-tonnage pier bodies in an embodiment of the present invention. Figure 3 This is a plan view of the integrated platform for prefabricating and transporting large-tonnage pier bodies in an embodiment of the present invention; Figure 4 For along Figure 1 Sectional view of line AA in the middle; Figure 5 For along Figure 2 Sectional view of the middle BB line; Figure 6 For along Figure 2 A cross-sectional view of the CC line; Figure 7 This is a schematic diagram of the ladder storage of the integrated platform for the prefabrication and transportation of large-tonnage pier bodies in an embodiment of the present invention; Figure 8 For along Figure 3 A cross-sectional view of the DD line.

[0025] In the picture: 1. First track; 2. Second track; 3. Trolley; 4. Cross diaphragm; 5. Inner formwork; 6. Dry joint formwork; 7. Inner reinforcing rod; 8. Embedded bolt; 9. Embedded anchor; 10. Annular stiffening rib; 11. Manhole; 12. Ladder; 13. Pier body; 14. Temporary support pier; 101. First top slab; 102. First bottom slab; 201. Second top plate; 202. Second bottom plate; 501. Support rod. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center", "first", "second", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figure 1 As shown, in one embodiment of the prefabrication and transportation construction method and integrated platform and system for large-tonnage pier bodies of the present invention, the prefabrication and transportation of the large-tonnage pier body 13 is carried out through an integrated platform. The prefabrication and transportation construction method for large-tonnage pier bodies includes the following steps: Pier body prefabrication: Move the integrated platform to the top of the prefabrication area platform, set the template on the integrated platform, and prefabricate pier body 13; Pier storage: After pier 13 prefabrication meets design requirements, trolley 3 enters the prefabrication area. Trolley 3 is equipped with a group of jacks, which are used to lift the prefabricated pier 13 and formwork. Figure 8 As shown, trolley 3 transports the integrated platform to temporary support 14 in the storage area; Pier body fixing: Connect and fix the inner cavity sidewall of pier body 13 to the integrated platform; Pier body transport: The trolley 3 pushes the integrated platform along the track on the semi-submersible barge to the bottom of the semi-submersible barge support beam. The integrated platform carrying the pier body 13 is moved to the top of the semi-submersible barge support beam by the jack group. The jack group falls back, so that the integrated platform is placed on the semi-submersible barge support beam. Pier installation: The semi-submersible barge carries the integrated platform of pier 13 to the offshore construction site, where pier 13 is lifted and installed by a floating crane; Platform Return: The semi-submersible barge, equipped with an integrated platform, returns to the prefabrication area to begin the next construction cycle.

[0031] In the above illustrative embodiments, the construction method for prefabricating and transporting large-tonnage piers in this invention involves the prefabrication, storage, fixing, transporting, installation, and platform return of the pier 13 all being completed through a single integrated platform. This avoids multiple transfers and reloading of the pier 13 between the prefabrication, storage, and transport stages, reducing the need for transfer links and hoisting equipment. The trolley 3, in conjunction with the jack group, enables synchronous lifting and overall movement of the integrated platform and the pier 13 during the storage and transport stages, avoiding localized stress concentration and ensuring structural safety during transport. The pier 13 fixing step connects the inner wall of the pier 13 to the platform, forming an integrated load-bearing system during sea transport, effectively preventing the pier 13 from overturning. The platform return step allows for repeated use of the platform, reducing construction costs. This solution meets the usage requirements of the entire process of prefabrication, transport, storage, transport, and hoisting of large-tonnage piers 13.

[0032] In some embodiments, such as Figure 1 As shown, in the pier storage step, the trolley 3 enters the prefabrication area via the first track 1. After the prefabricated pier 13 and template are lifted by the jack group, the trolley 3 transports the integrated platform along the first track 1 to the temporary support 14 in the storage area. The temporary support 14 bears the entire weight of the integrated platform and pier 13 in the storage area, allowing the trolley 3 to be withdrawn for other operations after transportation, thus improving the utilization efficiency of the trolley 3.

[0033] In some embodiments, during the prefabrication of the pier body 13, pre-embedded bolts 8 are installed on the sidewalls of the inner cavity of the pier body 13. During the pier body fixing step, the method for connecting and fixing the sidewalls of the inner cavity of the pier body 13 to the integrated platform includes: workers reaching the area below the inner cavity of the pier body 13 through the manhole 11 pre-reserved on the integrated platform, climbing to the pre-embedded bolts 8, and fixing the pre-embedded bolts 8 to the internal reinforcement unit of the integrated platform. Using the pre-embedded bolts 8 as fixing points, a detachable rigid connection between the pier body 13 and the integrated platform is achieved; the pre-reserved manhole 11 provides workers with a physical path to enter the area below the inner cavity of the pier body 13, enabling the connection and fixing of the pier body 13 to the platform to be completed before storage and shipment, ensuring the stability of the pier body 13 during subsequent maritime transport.

[0034] In some embodiments, such as Figure 6As shown, the method by which workers climb to the pre-embedded bolt 8 includes: workers accessing the area below the inner reinforcing rod 7 through the manhole 11, climbing to the bottom of the inner formwork 5 via the ladder 12 erected below the inner formwork 5 of the pier body 13, and then climbing to the pre-embedded bolt 8 via the support rod 501 installed on the inner formwork 5. The ladder 12 and support rod 501 construct a continuous climbing path from the bottom of the platform to the position of the pre-embedded bolt 8 within the inner cavity of the pier body 13, solving the problem of workers finding it difficult to reach the pre-embedded bolt 8 when the inner cavity of the pier body 13 is small and lacks fixed climbing facilities, thus providing operable working conditions for the connection and fixing operation between the pier body 13 and the platform.

[0035] It should be noted that, as Figure 7 As shown, after workers climb to the bottom of the inner formwork 5 using ladder 12, they drag ladder 12 to the inside of the inner formwork 5 for hanging and storage. When the inner formwork 5 is removed during the installation of the pier body 13, ladder 12 is taken out. Before the next prefabrication of the pier body 13, ladder 12 is erected under the inner formwork 5 of the pier body 13. As an illustrative embodiment, the inner formwork 5 is equipped with hooks for hanging and storing ladder 12. After climbing, workers drag ladder 12 to the inside of the inner formwork 5 and hang it using the hooks. Before the next prefabrication of the pier body 13, ladder 12 is erected under the inner formwork 5 again. This arrangement ensures that ladder 12 moves with the inner formwork 5 throughout the prefabrication and storage of the pier body 13, eliminating the need for additional handling or storage. Ladder 12, suspended and stored inside the inner formwork 5, does not occupy the passage space within the pier body 13 cavity, avoiding the safety risks of ladder 12 swaying or falling during the transportation of the pier body 13, and also facilitating direct access in the next construction cycle.

[0036] In some embodiments, such as Figure 2 As shown, in the pier body transportation process, the method of moving the integrated platform to the semi-submersible barge includes: the trolley 3 moves along the second track 2 to the bottom of the integrated platform, uses a group of jacks to lift the integrated platform, and moves the integrated platform along the second track 2 to the temporary support pier 14 of the wharf ramp. The inclined car is positioned at the top of the ramp. Then, the trolley 3 moves the integrated platform along the first track 1 to the inclined car. The winch at the top of the ramp lowers the inclined car carrying the integrated platform to the front of the semi-submersible barge, and aligns the inclined car track with the semi-submersible barge track.

[0037] In some embodiments, the pier storage step further includes: applying anti-corrosion coating and landscape coating to the pier 13, and fixing the pier 13 after the storage time has reached the design requirements.

[0038] Based on the above-mentioned construction method for prefabricating and transporting large-tonnage pier bodies, such as Figure 3 As shown, the present invention also provides an integrated platform for the prefabrication and transportation of large-tonnage pier bodies, applied to the above-mentioned construction method for the prefabrication and transportation of large-tonnage pier bodies, including: The first track 1 is provided in two parallel sections. Each first track 1 includes a horizontally arranged first base plate 102 and a first top plate 101. The bottom of the first base plate 102 is used for the passage of the trolley 3. The second track 2 is provided in two, and the two second tracks 2 are parallel to each other and perpendicular to the first track 1. The two first tracks 1 and the two second tracks 2 are arranged in a grid pattern on the plane. Each second track 2 includes a horizontally arranged second base plate 202 and a second top plate 201. The trolley 3 passes under the second base plate 202. The trolley 3 is provided with several trolleys. The top of the trolley 3 is equipped with a jack. The tops of the trolleys 3 form a jack group, which is used to lift the first track 1 or the second track 2. The transverse partition 4 is arranged in a mesh pattern in the plane where the top surfaces of the first track 1 and the second track 2 are located. It is also arranged between the first top plate 101 and the first bottom plate 102 and between the second top plate 201 and the second bottom plate 202. The two first tracks 1, the two second tracks 2 and the transverse partition 4 together form the load-bearing frame of the integrated platform. The template includes an inner template 5, which is located at the center of the intersection of the two first tracks 1 and the two second tracks 2; The inner reinforcing rod 7 is set inside the inner template 5 and is used to fix the precast pier body 13 to the integrated platform. The inner cavity of the precast pier body 13 is provided with embedded bolts 8. The bottom of the inner reinforcing rod 7 is connected to the first track 1 or the second track 2, and the top is connected to the embedded bolts 8.

[0039] In the above illustrative embodiments, the integrated platform for the prefabrication and transport of large-tonnage piers in this invention forms a stable load-bearing and transport system by organically combining a grid-shaped bidirectional track, a load-bearing frame composed of mesh diaphragms 4, a centrally located inner template 5, and an inner reinforcing rod 7 that can be fixed to the pier 13. This platform not only gives the large pier 13 the ability to move flexibly in both longitudinal and transverse directions within the prefabrication yard, but also meets the stability requirements of a 3000t load through a distributed load-bearing structure. Furthermore, the inner reinforcing rod 7 achieves rigid locking between the pier 13 and the platform before transportation, providing a safe and reliable structural foundation for the entire process of the pier 13 from prefabrication to sea transport.

[0040] In some embodiments, such as Figure 6 As shown, the integrated platform for the prefabrication and transportation of large-tonnage piers also includes pre-embedded anchors 9. The pre-embedded anchors 9 are located at the bottom of the inner reinforcing rods 7 and are fixedly connected to the first track 1 or the second track 2. The inner reinforcing rods 7 are also fixedly connected to the pre-embedded anchors 9. The pre-embedded anchors 9 enhance the connection strength and pull-out resistance at the bottom of the inner reinforcing rods 7, preventing loosening or damage to the connection nodes during repeated tension and compression, thus ensuring the reliability of the connection between the pier body 13 and the platform during maritime transportation.

[0041] In some embodiments, such as Figure 4 , Figure 5 As shown, the integrated platform for the prefabrication and transport of large-tonnage pier bodies also includes annular stiffening ribs 10. These ribs are located inside the first track 1 and the second track 2, serving to connect and reinforce the first top plate 101, the first bottom plate 102, and the transverse diaphragms 4 between them. They also connect and reinforce the second top plate 201, the second bottom plate 202, and the transverse diaphragms 4 between them. By using the annular stiffening ribs 10, the top plate, bottom plate, and transverse diaphragms 4 are connected into an integral load-bearing structure, enhancing the bending stiffness and buckling resistance of the track beams under vertical loads. Furthermore, compared to the traditional approach of using continuous stiffening ribs or increasing plate thickness, the annular stiffening ribs 10 reduce steel consumption while providing effective reinforcement, thus helping to control the platform's self-weight.

[0042] In some embodiments, such as Figure 4 As shown, the integrated platform for the prefabrication and transportation of large-tonnage piers is also equipped with a dry joint template 6. The dry joint template 6 is set on the top surface of the integrated platform. During the prefabrication of the pier 13, the dry joint template 6 serves as the bottom plate joint template of the pier 13, supporting the concrete poured for the pier 13. During the transportation of the pier 13, the dry joint template 6 is lifted up along with the pier 13 and shares the weight of the pier 13 with the integrated platform. During the transportation process, the dry joint template 6 acts as a force transmission medium between the pier 13 and the platform, evenly transferring the load of the pier 13 to the top surface of the platform, avoiding localized pressure damage that may result from direct rigid contact between the bottom of the pier 13 and the top surface of the platform.

[0043] In some embodiments, such as Figure 4 , Figure 5 As shown, transverse partitions 4 are provided between the first base plate 102 and the first top plate 101, and between the second base plate 202 and the second top plate 201. Manholes 11 are provided in the transverse partitions 4, the first top plate 101, the second top plate 201, and the transverse partitions 4. This embodiment allows workers to enter the various chambers inside the platform through the manholes 11, providing personnel passage and operating space for the connection operation of the internal reinforcing rods 7, the inspection and maintenance of the internal components of the platform, and possible maintenance work in the future, avoiding the problem of being unable to carry out internal work due to the enclosed structure of the platform.

[0044] In some embodiments, such as Figure 6As shown, the integrated platform for the prefabrication and transportation of large-tonnage pier bodies also includes a ladder 12. When the pier body 13 is fixed, the ladder 12 is erected below the inner formwork 5 of the pier body 13; after the pier body 13 is fixed, the ladder 12 is suspended and stored inside the inner formwork 5. The ladder 12 provides a climbing passage during the pier body 13 fixing operation, and can be stored inside the inner formwork 5 after the operation is completed, without occupying the passage space inside the pier body 13 cavity, and also preventing the ladder 12 from shaking or falling during transportation; the ladder 12 is transferred along with the inner formwork 5, and there is no need to move and erect it separately when it is used again, which improves the work efficiency.

[0045] In some embodiments, such as Figure 7 As shown, the inner template 5 is equipped with a horizontally arranged support rod 501, which allows workers to climb to the pre-embedded bolt 8.

[0046] The inner side of the inner template 5 is provided with hooks for hanging and storing the ladder 12.

[0047] Based on the above-mentioned integrated platform for the prefabrication and transportation of large-tonnage piers, the present invention also provides an integrated system for the prefabrication and transportation of large-tonnage piers, including the above-mentioned integrated platform for the prefabrication and transportation of large-tonnage piers, and also including a number of temporary supports 14 for temporarily supporting the integrated platform. Temporary supports 14 are provided in the storage area and the wharf ramp.

[0048] In the above illustrative embodiment, the integrated system for prefabricating and transporting large-tonnage piers in this invention includes the aforementioned integrated platform and several temporary supports 14 set in both the storage area and the wharf ramp. This arrangement allows the integrated platform to transfer the entire weight of the platform and the pier 13 to the temporary supports 14 during the storage phase after the prefabrication of the pier 13 is completed, and during the waiting phase on the wharf ramp before the pier 13 is shipped. This allows the trolley 3 to be withdrawn from under the platform and put into other transportation tasks, avoiding the trolley 3 being occupied for a long time. At the same time, the temporary supports 14 set in both the storage area and the wharf ramp ensure the stable support of the platform at the two key stopping positions, preventing platform deformation or foundation settlement due to long-term load-bearing.

[0049] In some embodiments, such as Figure 1 As shown, several temporary supports 14 are arranged along the direction of the first track 1. The distance between two adjacent temporary supports 14 is greater than the width of the second top plate 201 or the second bottom plate 202.

[0050] It should be noted that although the above embodiments use the precast piers of cross-sea bridges as an example to illustrate this technical solution in detail, those skilled in the art will understand that the core of the "grid-shaped track + trolley + jack group" collaborative operation platform system described in this patent lies in providing a universal logistics solution capable of planar bidirectional movement, precise lifting, and stable transfer of ultra-large and ultra-heavy components. This integrated platform system is not specific to the specific structural shape and functional attributes of the goods it carries. Therefore, in addition to precast piers, this technical solution can also be directly or with simple adjustments widely applied to the transfer of other large-tonnage components in ports, shipbuilding bases, or heavy equipment manufacturing plants. Typical applicable objects include, but are not limited to, wind turbine towers, ship sections, large transformers, and other heavy and large cargo commonly found in ports or storage yards. Any heavy-load transfer using the grid-shaped track layout described in this patent in conjunction with the trolley lifting and translation system in storage areas, ports, or barges falls within the scope of protection of this patent.

[0051] Through the description of multiple embodiments of the construction method and integrated platform and system for prefabricating and transporting large-tonnage piers of the present invention, it can be seen that the embodiments of the construction method and integrated platform and system for prefabricating and transporting large-tonnage piers of the present invention have at least one or more of the following advantages: 1. The construction method for prefabricating and transporting large-tonnage pier bodies provided by the present invention allows the prefabrication, storage, fixing, transport, installation and platform return of the pier body 13 to be completed through the same integrated platform, avoiding multiple transfers and reloading of the pier body 13 between the prefabrication, storage and transport stages, and reducing the investment in transfer links and hoisting equipment.

[0052] 2. The integrated platform for prefabricated transport of large-tonnage piers provided by the present invention forms a stable load-bearing and transport system by organically combining a two-way track in a grid-like layout, a load-bearing frame composed of mesh diaphragms 4, an inner template 5 located in the center, and an inner reinforcing rod 7 that can be fixed to the pier body 13.

[0053] 3. The integrated system for prefabricating and transporting large-tonnage piers provided by the present invention can transfer the entire weight of the platform and the pier 13 to the temporary support pier 14 during the storage stage after the prefabrication of the pier 13 is completed, and during the waiting stage on the wharf ramp before the pier 13 is transported. This allows the trolley 3 to be withdrawn from under the platform and put into other transportation tasks, avoiding the trolley 3 being occupied for a long time.

[0054] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for prefabricating and transporting large-tonnage pier bodies, characterized in that, The prefabrication and transportation of large-tonnage pier bodies is carried out using an integrated platform, which includes: The first track has two parallel tracks. Each first track includes a horizontally arranged first base plate and a first top plate. The area under the first base plate is used for the passage of a trolley. The second track has two sections, which are parallel to each other and perpendicular to the first track. The two first tracks and the two second tracks are arranged in a grid pattern on the plane. Each second track includes a horizontally arranged second bottom plate and a second top plate. The area under the second bottom plate is used for the passage of a trolley. The trolley consists of several trolleys, each equipped with a jack on its top. The tops of the trolleys together form a jack group, which is used to lift the first or second track. The diaphragm is arranged in a mesh pattern in the plane where the top surfaces of the first and second tracks are located, and is also arranged between the first top plate and the first bottom plate and between the second top plate and the second bottom plate. The two first tracks, the two second tracks and the diaphragm together form the load-bearing frame of the integrated platform; manholes are provided in the diaphragm, the first top plate and the second top plate. The template includes an inner template, which is located at the center of the intersection of the two first tracks and the two second tracks; Internal reinforcing rods, installed inside the inner formwork, are used to securely connect the precast pier body to the integrated platform. The precast pier body has embedded bolts inside; the bottom of the internal reinforcing rod is connected to the first or second track, and the top is connected to the embedded bolts. The construction method for precasting and transporting large-tonnage pier bodies includes the following steps: Pier prefabrication: The integrated platform is moved to the top of the prefabrication area platform, and templates are set on the integrated platform to carry out pier prefabrication; Pier storage: After the pier prefabrication meets the design requirements, the trolley enters the prefabrication area and uses a group of jacks to lift the prefabricated pier and formwork. The trolley then transports the integrated platform to the temporary support pier in the storage area. The methods for workers to climb to the embedded bolts include: workers reach the bottom of the inner reinforcing rod through the manhole, climb to the bottom of the inner formwork through the ladder erected under the inner formwork of the pier, and then climb to the embedded bolts through the support rods set on the inner formwork. Pier fixing: Connect and fix the inner cavity sidewall of the pier to the integrated platform; Pier body transport: The trolley pushes the integrated platform along the track on the semi-submersible barge to the underside of the semi-submersible barge support beam. The integrated platform carrying the pier body is moved to the top of the semi-submersible barge support beam by the jack group. The jack group then falls back down, allowing the integrated platform to land on the semi-submersible barge support beam. Pier installation: The pier body is transported to the offshore construction site by a semi-submersible barge carrying an integrated platform, and then installed by a floating crane. Platform Return: The semi-submersible barge, equipped with an integrated platform, returns to the prefabrication area to begin the next construction cycle.

2. The construction method for prefabricating and transporting large-tonnage pier bodies according to claim 1, characterized in that, In the pier storage step, the trolley enters the prefabrication area via the first track. After the prefabricated pier and template are lifted by the jack group, the trolley transports the integrated platform to the temporary support pier in the storage area along the first track.

3. The construction method for prefabricating and transporting large-tonnage pier bodies according to claim 1, characterized in that, During the prefabrication of the pier body, pre-embedded bolts are installed on the side walls of the inner cavity of the pier body. In the pier fixing process, the method of connecting and fixing the inner cavity sidewall of the pier to the integrated platform includes: after the workers reach the bottom of the inner cavity of the pier through the manhole passage reserved in the integrated platform, they climb to the pre-embedded bolts and fix the pre-embedded bolts to the inner reinforcement unit of the integrated platform.

4. The construction method for prefabricating and transporting large-tonnage pier bodies according to claim 1, characterized in that, In the process of transporting the pier body, the method of moving the integrated platform to the semi-submersible barge includes: the trolley moves along the second track to the bottom of the integrated platform, the integrated platform is lifted by the jack group, and the integrated platform is moved along the second track to the temporary support pier of the wharf ramp. The inclined car is positioned at the top of the ramp. Then the trolley moves the integrated platform along the first track to the inclined car. The inclined car carrying the integrated platform is lowered to the front of the semi-submersible barge by the winch at the top of the ramp, and the inclined car track is aligned with the semi-submersible barge track.

5. The construction method for prefabricating and transporting large-tonnage pier bodies according to claim 4, characterized in that, The pier storage process also includes: applying anti-corrosion coating and landscape coating to the pier, and fixing the pier after the storage time meets the design requirements.

6. The construction method for prefabricating and transporting large-tonnage pier bodies according to claim 1, characterized in that, The integrated platform for the prefabrication and transportation of large-tonnage piers also includes a ladder. When the pier is fixed, the ladder is erected below the inner formwork of the pier; after the pier is fixed, the ladder is suspended and stored inside the inner formwork.

7. A large-tonnage pier prefabrication, transportation, and construction integrated system, characterized in that: The method for prefabricating and transporting large-tonnage piers as described in any one of claims 1-6 includes an integrated platform for prefabricating and transporting large-tonnage piers, and also includes several temporary supports for temporarily supporting the integrated platform. Temporary supports are provided in the storage area and the wharf ramp.

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