Cross-sea main tower formwork construction platform

Abstract

The utility model relates to the technical field of building construction, in particular to a cross-sea main tower formwork construction platform which comprises an integral annular platform defined by truss units erected along unit faces of a bridge body. Each truss unit comprises an upper operation platform, a formwork platform, a frame reinforcing platform and a formwork system lower platform which are sequentially distributed from top to bottom. A pedestrian passage is arranged on each platform in the truss unit. And due to the modular design and the layered structure, construction operation is more orderly and efficient, and the construction period is shortened. Due to the fact that the climbing operation of the climbing formwork can be continuously carried out in the pouring process, the continuity of the construction progress is guaranteed, the quality problem possibly caused by construction pause can be reduced, and the overall construction quality is improved. According to the cross-sea main tower formwork construction platform, efficient, safe and flexible construction operation is achieved through innovative designs such as a modular design, a layered structure, a pedestrian path, a protective net and an automatic contraction sliding device, and the efficiency and quality of bridge construction are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a sea-crossing main tower formwork construction platform. Background Art

[0002] Climbing formwork is an effective tool for constructing tall structures such as shear wall systems, cylinder systems and bridge piers, and is especially suitable for super high-rise building construction. In particular, in the construction process of large bridges, the construction and adjustment of the formwork construction platform is an extremely critical link. Traditional formwork construction platforms mostly adopt a fixed design and cannot adapt to the adjustment of bridge cross-sections as the construction progresses. This not only increases the difficulty of construction, but also affects construction efficiency and safety. In addition, traditional construction platforms also have many shortcomings in terms of personnel passage, material transportation, and safety protection, and it is difficult to meet the needs of modern bridge construction.

[0003] The cross-sea main tower formwork construction platform is a formwork construction platform that can climb synchronously with the increase of bridge construction height. It is flexible in design and highly adaptable, and can significantly improve construction efficiency and safety. However, the existing cross-sea main tower formwork construction platform still has some shortcomings in structural design, such as the connection between platforms is not stable enough, the internal passage of the platform is inconvenient, and the hysteresis of climbing, etc. These problems limit the wide application of the cross-sea main tower formwork construction platform in bridge construction.

[0004] In the construction of bridges and similar concrete structures, concrete maintenance is a key link to ensure structural strength, durability and safety. Traditional concrete maintenance methods often have problems such as untimely maintenance, uneven maintenance effects, and great influence from environmental factors.

[0005] In addition, the hydraulic system and reversing device of the traditional formwork construction platform are designed between the guide rail and the column. However, a significant problem with this design is that the guide rail is far away from the structural surface (such as the building wall or a specific structure), and there is also a large distance between the column and the guide rail, resulting in poor stability of the entire formwork and being easily affected by wind. Utility Model Content

[0006] The utility model aims at the technical problems existing in the prior art and provides a cross-sea main tower formwork construction platform to solve the problems of low climbing efficiency and poor stability of the above-mentioned traditional climbing formwork device.

[0007] The utility model solves the above technical problems with the following technical solutions: a cross-sea main tower formwork construction platform, comprising an integral annular platform surrounded by truss units erected along each unit surface of the bridge body;

[0008] The truss unit includes an upper operating platform, a template platform, a frame reinforcement platform and a lower platform of the formwork system which are sequentially distributed from top to bottom;

[0009] Each platform in the truss unit is provided with a pedestrian passage;

[0010] A protective net surrounding the overall annular platform is arranged on the outside of the truss unit.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the truss unit includes two units that are symmetrical along the transverse direction of the bridge, one unit that is adjacent along the outer side along the longitudinal direction of the bridge, and two units that are adjacent along the inner side along the longitudinal direction of the bridge.

[0013] Furthermore, a sliding device which can automatically shrink along the cross section of the bridge body is provided between two adjacent truss units along the inner side of the bridge.

[0014] Furthermore, the sliding device includes a sliding beam support rod arranged along two adjacent truss units, and a sliding beam limit slot is reserved on the sliding beam support rod; a sliding support rod is arranged in the sliding beam limit slot, and both ends of the sliding support rod extend to the truss units on both sides respectively; when the cross-sea main tower formwork construction platform has completed climbing, the sliding support rod is fixed to the sliding beam support rod by a pin.

[0015] Furthermore, a load-bearing tripod is installed between the frame reinforcement platform and the lower platform of the formwork system; a guide rail is arranged along the climbing direction of the formwork, and a climbing mechanism for driving the load-bearing tripod to move along the guide rail is also provided on the load-bearing tripod.

[0016] Furthermore, the load-bearing tripod includes two groups of columns respectively arranged on both sides of the guide rail, a tripod crossbeam hinged on the columns, and a diagonal brace hinged between the columns and the tripod crossbeam.

[0017] Furthermore, the template platform is equipped with a casting template and a template support connected to the casting template.

[0018] Furthermore, the upper operating platform, formwork platform, frame reinforcement platform and lower platform of the formwork system are all formed by vertically connecting a number of sub-frame units, and each sub-frame unit is a frame structure assembled from horizontal platform beams, vertical support beams and diagonal braces.

[0019] Furthermore, the frame reinforcement platform and the lower platform of the formwork system are provided with a lower tarpaulin covering the formed concrete; the formwork platform is provided with an upper tarpaulin along the formwork corners and the top of the formwork of the casting formwork; the cross-sea main tower formwork construction platform also includes a maintenance device for conveying steam or water mist to the lower tarpaulin and the upper tarpaulin.

[0020] Furthermore, passage openings are reserved on the pedestrian passages on each floor, and a ladder extending to the passage opening on the upper floor is set up on the pedestrian passage on the lower floor.

[0021] Furthermore, the sea-crossing main tower formwork construction platform provided by the utility model has at least the following beneficial effects compared with the prior art.

[0022] 1. Modular design and layered structure make construction operations more orderly and efficient, and reduce the construction period. Since the climbing formwork can be continuously climbed during the pouring process, the continuity of the construction progress is ensured, which helps to reduce quality problems caused by construction pauses and improve the overall construction quality. The cross-sea main tower formwork construction platform has achieved efficient, safe and flexible construction operations through innovative designs such as modular design, layered structure, pedestrian walkway, protective net and automatic retractable sliding device, which significantly improves the efficiency and quality of bridge construction.

[0023] 2. In response to changes in the cross-section of the bridge, a sliding device that can automatically shrink along the cross-section of the bridge is installed between two adjacent truss units along the inner side of the bridge. This design enables the platform to adapt to changes in different bridge cross-sections, maintain a stable support structure, and improve the versatility and adaptability of the platform.

[0024] 3. By designing the columns and rails to fit together, the columns can fit more closely on the rails, greatly reducing the distance between the columns and rails. This close-fitting design not only reduces the shaking under the influence of external factors such as wind, but also reduces the distance between the load-bearing tripod and the structure, thereby significantly improving the overall stability of the formwork platform. Especially in offshore construction, canyon bridge construction, and ultra-high pier foundation construction, this design can effectively resist the influence of sea breeze, canyon wind, and wind during pier construction, reduce the shaking of the formwork platform, and ensure construction safety and stability of construction equipment.

[0025] 4. The design of the cross-sea main tower formwork construction platform realizes efficient concrete maintenance by covering the lower tarpaulin covering the formed concrete and the upper tarpaulin covering the corners and top of the formwork, combined with the steam and water mist maintenance device. This design significantly improves the hardening speed and strength of the concrete, effectively prevents quality problems such as cracks, reduces maintenance costs, and improves construction efficiency.

[0026] 5. The design of the platform ensures that the concrete can be smoothly molded in the upper pouring section and the curtain curing procedure can be started immediately, effectively reducing the risk of early cracking of concrete and rapid loss of moisture. It is particularly important that when the frame completes a section of climbing, the newly poured section is immediately transformed into a load-bearing layer and continues to receive curtain curing, so that the concrete is in an active curing state within the time window of two consecutive pouring sections.

[0027] Concrete can continue to be maintained during construction in both the pouring layer and the anchoring load-bearing layer, so the frame can climb the formwork and proceed to the next section after the concrete strength of the poured section is sufficient. This design innovation ensures that the entire concrete has sufficient curing time and improves construction efficiency; at the same time, it promotes the smooth progress of its internal hydration reaction, thereby significantly improving the strength, durability and overall quality of the concrete and ensuring the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the overall structure of the utility model for assembling a protective net;

[0030] Figure 3 This is a schematic diagram of the principle of the sliding device of the utility model;

[0031] Figure 4 It is a partial structural schematic diagram of the sliding device of the utility model;

[0032] Figure 5 For this utility model Figure 1 The enlarged view of point A in the middle;

[0033] Figure 6 This is a schematic diagram of the overall structure of the truss unit of the utility model;

[0034] Figure 7 It is a partial structural schematic diagram of the load-bearing tripod of the utility model;

[0035] Figure 8 For this utility model Figure 7 The enlarged view of point B in the middle;

[0036] Fig. 9 This is a schematic diagram of the principle of the climbing mechanism of the utility model;

[0037] Fig.10 It is a cross-sectional schematic diagram of the reversing box of the utility model.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 100, truss unit; 200, pedestrian passage; 201, passage opening; 202, ladder; 300, protection net; 400, sliding device; 401, sliding beam support rod; 402, sliding beam limit slot; 403, sliding support rod;

[0040] 1. Upper operating platform; 2. Formwork platform; 3. Frame reinforcement platform; 4. Formwork system lower platform; 5. Load-bearing tripod; 5.1. Column; 5.2. Tripod beam; 5.3. Diagonal brace; 6. Guide rail; 7. Climbing mechanism; 7.1. Upper reversing box; 7.2. Lower reversing box; 7.3. Cylinder; 7.4. Tongue; 7.5. Handle; 7.6. Elastic telescopic rod; 8. Upper limit seat; 8.1. Hook; 9. Lower limit seat; 10. Hanging seat; 11. Hanging seat bearing pin; 12. Guide rail bearing pin; 13. Guide rail safety pin; 14. Casting formwork; 15. Formwork support; 16. Lower tarpaulin; 17. Upper tarpaulin; 18. Maintenance device. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the cross-sea main tower formwork construction platform of the practical design includes an overall annular platform surrounded by truss units 100 erected along each unit surface of the bridge body;

[0044] The truss unit 100 includes an upper operating platform 1, a template platform 2, a frame reinforcement platform 3 and a lower platform 4 of the formwork system, which are sequentially distributed from top to bottom;

[0045] Each platform in the truss unit 100 is provided with a pedestrian passage 200;

[0046] A protective net 300 is arranged outside the truss unit 100 and surrounds the overall annular platform.

[0047] As an implementation manner, the truss unit 100 includes two units that are symmetrical along the transverse direction of the bridge, one unit that is adjacent along the outer side of the longitudinal direction of the bridge, and two units that are adjacent along the inner side of the longitudinal direction of the bridge.

[0048] The modular design and layered structure make the construction operation more orderly and efficient, and shorten the construction period. The setting of pedestrian walkways and protective nets greatly reduces the risk of high-altitude operations. The design of the overall ring platform and reinforced platform ensures the stability of the construction platform, providing a solid foundation for various construction operations.

[0049] Specifically, a sliding device 400 that can automatically shrink along the cross section of the bridge is provided between two adjacent truss units 100 along the inner side of the bridge.

[0050] like Figure 3 and Figure 4 As shown, the sliding device 400 includes a sliding beam support rod 401 arranged along the adjacent truss units 100, and a sliding beam limit slot 402 is reserved on the sliding beam support rod 401; a sliding support rod 403 is arranged in the sliding beam limit slot 402, and both ends extend to the truss units 100 on both sides respectively; when the cross-sea main tower formwork construction platform has completed climbing, the sliding support rod 403 is fixed to the sliding beam support rod 401 by a pin.

[0051] In view of the change of the bridge cross section, a sliding device 400 that can automatically shrink along the bridge cross section is provided between two adjacent truss units 100 along the inner side of the bridge. This design enables the platform to adapt to the changes of different bridge cross sections and maintain a stable supporting structure.

[0052] The sliding device 400 realizes the automatic retraction function through the cooperation of the sliding beam support rod 401 and the sliding support rod 403. The sliding beam support rod 401 is provided with a sliding beam limit slot 402, and the two ends of the sliding support rod 403 extend to the truss units 100 on both sides respectively, and are fixed to the sliding beam support rod 401 by a latch. This design ensures both the smoothness of sliding and the stability of the structure.

[0053] like Figure 6-10 As shown, as an embodiment, a load-bearing tripod 5 is installed between the frame reinforcement platform 3 and the lower platform 4 of the formwork system; a guide rail 6 is arranged along the climbing direction of the formwork, and a climbing mechanism 7 for driving the load-bearing tripod 5 to move along the guide rail 6 is also provided on the load-bearing tripod 5.

[0054] The upper operating platform 1 is located in the section of concrete to be poured and can be used for personnel operation and material stacking; the formwork platform 2 is located in the section of concrete that has been poured and is used for installation and removal of the formwork; the frame reinforcement platform 3 and the lower platform 4 of the formwork system are located in the concrete section that has been formed and are used to provide structural support, while the lower frame serves as the foundation of the entire platform.

[0055] As an implementation mode, the load-bearing tripod 5 includes two groups of columns 5.1 respectively arranged on both sides of the guide rail 6, a tripod crossbeam 5.2 hinged on the columns 5.1, and a diagonal brace 5.3 hinged between the columns 5.1 and the tripod crossbeam 5.2.

[0056] The load-bearing tripod 5 is located between the frame reinforcement platform 3 and the lower platform 4 of the formwork system, and plays the role of supporting and transferring the load. The design of the tripod increases the stability and load-bearing capacity of the structure.

[0057] The tripod comprises a column 5.1, a tripod crossbeam 5.2 and a diagonal brace 5.3. The column 5.1 is the main load-bearing part, the tripod crossbeam 5.2 is used to connect the columns on both sides, and the diagonal brace 5.3 provides additional support to prevent structural deformation.

[0058] As an implementation mode, the upper limit seat 8 and the lower limit seat 9 which are slidably matched with the guide rail 6 are respectively installed on the top and the bottom of the column 5.1, so as to ensure that the load-bearing tripod 5 can move stably along the guide rail 6. The upper limit seat 8 and the lower limit seat 9 not only provide guidance for the movement of the column 5.1, but also limit its vertical displacement range on the guide rail 6.

[0059] As an embodiment, it also includes a bracket 10 fixed on the formed concrete foundation, and the bracket 10 is used to lay out the guide rail 6 along the climbing direction of the formwork platform; the bracket 10 is fixed on the formed concrete foundation, providing stable support for the layout of the guide rail 6.

[0060] The mounting bracket 10 is provided with a detachable mounting bracket bearing pin 11 inserted in the horizontal direction, and the upper limit seat 8 is also provided with a hook 8.1 which can be hung on the mounting bracket bearing pin 11; when the load-bearing tripod 5 needs to be fixed at a certain position for construction, the hook 8.1 on the upper limit seat 8 can be hung on the mounting bracket bearing pin 11 to achieve temporary fixation of the tripod and the mounting bracket 10.

[0061] The guide rail 6 is penetrated and inserted with a guide rail bearing pin 12 in the horizontal direction, and the guide rail 6 is supported on the hanger 10 through the guide rail bearing pin 12. The guide rail bearing pin 12 further enhances the connection stability between the guide rail 6 and the hanger 10.

[0062] In addition, a detachable guide rail safety pin 13 is inserted between the guide rail 6 and the column 5.1 in the horizontal direction.

[0063] The guide rail safety pin 13 is inserted in the horizontal direction, passing through the preset holes of the guide rail 6 and the column 5.1, and fixing them tightly together. The insertion of the guide rail safety pin 13 effectively prevents the relative displacement between the guide rail 6 and the column 5.1, thereby enhancing the stability of the entire climbing device in a static state. This fixing method can ensure that the guide rail and the column can still maintain a stable position relationship under the influence of wind, vibration or other external factors.

[0064] As an embodiment, the climbing mechanism 7 includes an upper reversing box 7.1 and a lower reversing box 7.2; the upper reversing box 7.1 is connected to the upper limit seat 8, and an oil cylinder 7.3 is arranged between the upper reversing box 7.1 and the lower reversing box 7.2. In the climbing mechanism 7 of the formwork construction platform, the upper reversing box 7.1 is connected to the lower limit seat 9, and relative movement is achieved with the lower reversing box 7.2 through the oil cylinder 7.3. Among them, the tongue 7.4 is a key component, and its deflection is used to achieve locking with the climbing formwork groove on the guide rail 6.

[0065] Specifically, the upper reversing box 7.1 or the lower reversing box 7.2 is provided with a deflectable tongue 7.4, the guide rail 6 is provided with a plurality of spaced climbing mold grooves along the length direction, and the upper and lower sides of the tongue 7.4 are formed with support surfaces that can be adapted to the climbing mold grooves; the upper reversing box 7.1 or the lower reversing box 7.2 is also provided with a handle 7.5 connected to the tongue 7.4, and an elastic telescopic rod 7.6 that elastically supports the handle 7.5, and the handle 7.5 can adjust the deflection of the tongue 7.4 to lock the upper or lower support surface with the climbing mold groove of the guide rail 6.

[0066] By operating the handle 7.5, the deflection angle of the tongue 7.4 can be adjusted so that the upper or lower support surface is aligned with the climbing formwork groove of the guide rail 2. When the support surface of the tongue 7.4 is aligned with the climbing formwork groove, the tongue will fit tightly with the climbing formwork groove due to the push of the oil cylinder 7.3 or its own gravity, and achieve locking.

[0067] Before the tongue 7.4 is locked with the climbing formwork groove, the elastic telescopic rod 7.6 will provide sufficient elastic force to ensure that the tongue can be smoothly deflected to the desired position. After the tongue is locked with the climbing formwork groove, the elastic telescopic rod will also provide a certain holding force to ensure the stability of the locking.

[0068] The oil cylinder 7.3 drives the relative movement between the upper reversing box 7.1 and the lower reversing box 7.2 through the extension and contraction of its piston rod, thereby driving the tongue 7.4 and the climbing die groove of the guide rail 6 to be locked or unlocked.

[0069] The oil cylinder 7.3 starts to work, promoting the relative movement between the upper reversing box 7.1 and the lower reversing box 7.2, so that the formwork construction platform climbs along the guide rail 6.

[0070] When the formwork construction platform reaches the new position, the handle 7.5 is operated again to lock the support surface of the tongue 7.4 with the climbing formwork groove at the new position, ensuring that the formwork construction platform remains stable at the new position.

[0071] The elastic telescopic rod 7.6 is assembled by a spring, a spring top sleeve and a spring sleeve bottom. The spring top sleeve can slide relative to the spring sleeve bottom, and the spring is elastically supported in the spring top sleeve and the spring sleeve bottom. When the deflection angle of the tongue 7.4 needs to be adjusted, the spring top sleeve is slid relative to the spring sleeve bottom by operating the handle 7.5. In this process, the spring is compressed or stretched, thereby providing the necessary elastic force.

[0072] As an embodiment, the template platform 2 is equipped with a casting template 14 and a template support 15 connected to the casting template 14. The template platform 2, as a part of the entire cross-sea main tower formwork construction platform, provides a stable support platform for the casting template 14 and the template support 15. Before concrete pouring, the template support 15 is first installed on the template platform 2 and fixed and adjusted according to the requirements of the construction drawings. Then, the casting template 14 is placed on the template support 15 and firmly connected to the support.

[0073] As an implementation method, the upper operating platform 1, the formwork platform 2, the frame reinforcement platform 3 and the lower platform 4 of the formwork system are all formed by vertically connecting a plurality of sub-frame units, and each sub-frame unit is a frame structure assembled by a horizontal platform beam, a vertical support beam and a diagonal brace. Since each platform is formed by vertically connecting a plurality of sub-frame units, an overall stable structural system is formed. This structural system can resist loads from different directions, such as horizontal wind loads, earthquake loads, etc.

[0074] As an implementation method, the frame reinforcement platform 3 and the lower platform 4 of the formwork system are provided with a lower tarpaulin 16 covering the formed concrete; the formwork platform 2 is provided with an upper tarpaulin 17 along the formwork corners and the top of the formwork of the casting formwork 14; the cross-sea main tower formwork construction platform also includes a curing device 18 for conveying steam or water mist to the lower tarpaulin 16 and the upper tarpaulin 17. The lower tarpaulin 16 covers the formed concrete segments to prevent the concrete from losing moisture too quickly, so as to maintain its humidity and temperature, thereby accelerating the hardening process of the concrete and improving its strength. The upper tarpaulin 17 ensures that the concrete can also be fully cured at these key locations to prevent cracks or other quality problems.

[0075] The curing device 18 uses a steam generator and a fog machine, and delivers steam or water mist to the tarpaulin through a pipeline to cure the concrete and prevent cracking. During the installation process, the fog machine can be installed in the distribution area of ​​the upper tarpaulin 17 and the lower tarpaulin 16, and the entire concrete structure can be fully cured by delivering water mist to the tarpaulin. The steam generator is installed in the lower half of the tarpaulin, and by generating steam, the steam will rise along the tarpaulin until it is in full contact with the entire tarpaulin and the concrete, providing an ideal curing environment for the concrete.

[0076] The design of the platform ensures that the concrete can be smoothly molded in the upper casting section and the curtain curing procedure can be started immediately, effectively reducing the risk of early cracking of concrete and rapid loss of moisture. It is particularly important that when the frame completes a section of climbing, the newly cast section is immediately transformed into a load-bearing layer and continues to receive curtain curing, so that the concrete is in an active curing state within the time window of two consecutive casting sections. This design innovation ensures that the concrete has sufficient curing time and promotes the smooth progress of its internal hydration reaction, thereby significantly improving the strength, durability and overall quality of the concrete.

[0077] As an implementation method, Figure 5 As shown, a passage opening 201 is reserved on each layer of the pedestrian passage 200, and a ladder 202 extending to the passage opening 201 on the upper layer is set up on the pedestrian passage 200 on the lower layer; the setting of the passage opening and the ladder greatly shortens the time for construction workers to move between different platforms and improves construction efficiency.

[0078] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0079] Although the preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cross-sea main tower formwork construction platform, characterized in that: It comprises an overall annular platform surrounded by truss units (100) erected along each unit surface of the bridge body; The truss unit (100) comprises an upper operating platform (1), a formwork platform (2), a frame reinforcement platform (3) and a formwork system lower platform (4) which are arranged in sequence from top to bottom; Each platform in the truss unit (100) is provided with a pedestrian passage (200); A protective net (300) surrounding the overall annular platform is arranged outside the truss unit (100).

2. The cross-sea main tower formwork construction platform according to claim 1 is characterized in that: The truss unit (100) comprises two units which are symmetrical along the transverse direction of the bridge, one unit which is adjacent along the outer side of the longitudinal direction of the bridge, and two units which are adjacent along the inner side of the longitudinal direction of the bridge.

3. The cross-sea main tower formwork construction platform according to claim 2 is characterized in that: A sliding device (400) that can automatically shrink along the cross section of the bridge body is provided between two adjacent truss units (100) along the inner side of the bridge.

4. The cross-sea main tower formwork construction platform according to claim 3 is characterized in that: The sliding device (400) comprises a sliding beam support rod (401) arranged along two adjacent truss units (100), and a sliding beam limit slot (402) is reserved on the sliding beam support rod (401); a sliding support rod (403) is arranged in the sliding beam limit slot (402), and the two ends of the sliding support rod (403) extend to the truss units (100) on both sides respectively; when the sea-crossing main tower formwork construction platform has finished climbing, the sliding support rod (403) is fixed to the sliding beam support rod (401) by means of a latch.

5. The cross-sea main tower formwork construction platform according to claim 1 is characterized in that: A load-bearing tripod (5) is also installed between the frame reinforcement platform (3) and the lower platform (4) of the formwork system; a guide rail (6) is also arranged along the climbing direction of the formwork; and a climbing mechanism (7) for driving the load-bearing tripod (5) to move along the guide rail (6) is also arranged on the load-bearing tripod (5).

6. The cross-sea main tower formwork construction platform according to claim 5 is characterized in that: The load-bearing tripod (5) comprises two groups of upright posts (5.1) respectively arranged on both sides of the guide rail (6), a tripod crossbeam (5.2) hinged to the upright posts (5.1), and a diagonal brace (5.3) hinged between the upright posts (5.1) and the tripod crossbeam (5.2).

7. The cross-sea main tower formwork construction platform according to claim 1 is characterized in that: The template platform (2) is provided with a casting template (14) and a template support (15) connected to the casting template (14).

8. The cross-sea main tower formwork construction platform according to any one of claims 1 to 7, characterized in that: The upper operating platform (1), the formwork platform (2), the frame reinforcement platform (3) and the formwork system lower platform (4) are all formed by vertically connecting a plurality of sub-frame units, and each sub-frame unit is a frame structure assembled from horizontal platform beams, vertical support beams and diagonal braces.

9. The cross-sea main tower formwork construction platform according to claim 8, characterized in that: The frame reinforcement platform (3) and the lower platform (4) of the formwork system are provided with a lower tarpaulin (16) covering the formed concrete; the formwork platform (2) is provided with an upper tarpaulin (17) along the formwork corners and the top of the formwork of the casting formwork (14); and the cross-sea main tower formwork construction platform also includes a maintenance device (18) for conveying steam or water mist to the lower tarpaulin (16) and the upper tarpaulin (17).

10. The cross-sea main tower formwork construction platform according to claim 1, characterized in that: A passage opening (201) is reserved on each layer of the pedestrian passage (200), and a ladder (202) extending to the passage opening (201) on the upper layer is arranged on the pedestrian passage (200) on the lower layer.

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