Rolling formwork system for uniform-section solid double-column square pier of bridge

Abstract

The utility model relates to a bridge uniform-section solid double-column square pier rolling template system, which comprises an enclosure truss, a connecting truss, a lifting frame, a lifting system and a rolling module, the rolling module is formed by sleeving a PVC (polyvinyl chloride) conveying belt on a hemming steel core mold, and a polytetrafluoroethylene film is adhered to the surface of a hemming steel template. End plates and bolt holes are only arranged at two ends of the steel core mold of the steel template to be connected with the lifting frame, the template truss platform is lifted through the wedge block type jack, and the rolling module surrounds the pier column to form a track device capable of walking along the surface of the pier column. The formwork system rolls and ascends, so that only binding steel bars and pouring concrete are left in pier column construction, and continuous operation and construction are not affected by the age of the concrete. According to the utility model, the lifting of a uniform-section square pier template system and the formation of a rolling walking device on the concrete surface are realized, the sliding friction of the template on the concrete surface is avoided, the concrete appearance can achieve the effect of bare concrete, and the high-quality, continuous and efficient construction of a bridge square column solid pier can be realized.

Description

Technical Field

[0001] The utility model belongs to the field of bridge pier construction, and in particular relates to a rolling template system for a solid double-column square pier with equal cross-section of a bridge. Background Art

[0002] Large-scale construction of transportation projects, especially the high ratio of bridges and tunnels on mountainous highways, accounts for a large number of high bridge piers in the construction of highways in the Yunnan-Guizhou Plateau. As highways develop into deep mountain valleys, solid square piers over 40 meters are very common. At present, the construction formwork used for high piers mainly includes flip formwork, climbing formwork and sliding formwork. Each formwork in flip formwork construction must be dismantled and reinstalled, and tower cranes are required to cooperate with manual dismantling and installation. The safety risk of high-altitude operations is extremely high, and the frequent disassembly and assembly of formwork also leads to low construction efficiency. Its construction speed is limited by the age of concrete. Climbing formwork construction has a high degree of mechanization, but it also requires the formwork to leave the concrete surface after the concrete is fully solidified, and then the formwork is lifted and re-molded, realizing the mechanized operation of disassembly and assembly of formwork, but the climbing formwork equipment uses a large amount of steel, has a high cost, and is affected by the age of concrete, so the construction efficiency is low. The average speed of flip formwork and climbing formwork in the construction of solid square piers is difficult to exceed 1m per day. Sliding formwork construction involves sliding the formwork directly on the surface of incompletely solidified concrete. The construction is not affected by age and is very efficient. However, the direct friction and sliding between the formwork and the concrete results in poor appearance quality of the pier, loose surface stratification, substandard strength, reduced durability and other quality defects. At the same time, the formwork lifting procedure cannot be adjusted during the concrete solidification process, which places extremely high demands on the construction organization. Although roller formwork, sliding and flipping combination, hanging formwork, external sliding and internal flipping and other technologies have been developed in recent years, their basic principles have not broken through the essence of the above three forms of formwork, and are only a combination or partial improvement of different formwork technologies. A high-efficiency, high-safety, and quality-guaranteed pier construction method has become a new market demand. The development of a new high pier rolling formwork construction technology has great economic and social value. Summary of the invention

[0003] The purpose of the utility model is to provide a rolling formwork system for solid double-column square piers of equal cross-section for bridges in view of the deficiencies in the above-mentioned prior art. The formwork system is used to realize the lifting of the equal-section square pier formwork system and form a rolling walking device with the concrete surface, thereby avoiding the sliding friction of the formwork on the concrete surface. The concrete appearance can achieve the effect of clear concrete, and the solid double-column square piers can be constructed quickly and efficiently, while ensuring the construction quality and safety of the pier columns.

[0004] The utility model is realized by the following technical scheme: a rolling formwork system for a solid double-column square pier with equal cross-section of a bridge, comprising an outer fence, an inner fence, an operating platform, a lifting frame, a chamfer rolling module, a plane rolling module and a truss structure, wherein the outer fence and the inner fence are respectively arranged inside and outside the truss structure to form the safety protection of the whole formwork system, and the operating platform is arranged on the truss structure to serve as a platform for installing and tying steel bars and pouring concrete;

[0005] The truss structure includes a circle truss and a connecting truss. A lifting frame is arranged on the inner corner of the circle truss. The lifting frame is connected to a chamfered rolling module and a plane rolling module. The lifting frame is connected to a module connector via a lifting frame connector. The circle truss is connected to the chamfered rolling module and the plane rolling module via the module connector to form a rolling template system body.

[0006] Preferably, the outer fence and the inner fence are both made of 50*50*5 steel pipes, the operating platform is made of 2.5mm patterned steel plates laid on the truss structure, the circle truss and the connecting truss are both composed of 100*100*8 angle steels as chords and 63*63*5 angle steels as webs, the width and height of the cross-sectional profile of the circle truss are 1m×1.2m or 1m×1.5m, and the length is determined according to the cross-sectional size of the pier, ensuring that the inner contour of the truss circle is not less than 20cm from the outer surface of the pier.

[0007] Preferably, the truss structure is provided with three enclosures, the middle enclosure is provided with an inner fence, and the enclosure trusses on both sides are respectively connected to eight lifting frames at eight inner corners by M18 high-strength bolts.

[0008] Preferably, a 10 mm thick rubber pad is provided at the connection between the module connector and the truss structure as an elastic buffer device.

[0009] Preferably, the chamfered rolling module and the plane rolling module include a module panel with a thickness of 6mm and a vertical flatness of 1%. The module panel is provided with semicircular curling edges with a diameter of 10cm at the top and bottom. 8mm thick connecting folding plates are provided at both ends of the chamfered rolling module, and 8mm thick module end plates are provided at both ends of the plane rolling module. Eight folding plate bolt holes with an aperture of 20mm are provided on the connecting folding plates, and eight end plate bolt holes with an aperture of 20mm are provided on the module end plates. A back rib is provided on the back of the module panel, and the back rib adopts a square steel pipe with a wall thickness of 6mm and an outer profile of 90mm×90mm; the two ends of the back rib are firmly welded to the module end plates, and are intermittently welded to the module panel, so that the entire rolling module is a whole. The upper and lower curling edges of the module panel are space arc curling templates, and a PVC conveyor belt is installed on the module panel to form a rolling module.

[0010] Preferably, the chamfered rolling module and the plane rolling module have a vertical height of 1.2m or 1.5m, and a total height of 1.3m or 1.6m.

[0011] Preferably, a layer of 0.1mm-0.2mm polytetrafluoroethylene film is pasted on the outer surface of the module panel, and the polytetrafluoroethylene film has its own adhesive backing and can be directly bonded to the module panel after grinding and polishing.

[0012] Preferably, the PVC conveyor belt adopts a two-cloth and two-rubber process, has a thickness of 2mm-4mm, and an inner circumference that is 2mm-4mm longer than the circumference of the outer surface formed by the panel.

[0013] Preferably, the lifting frame is made of 140 equilateral angle steel with a wall thickness of 10mm as the lifting frame connector, and the lower part of one side is connected to the two rolling modules through 8 holes, and the upper part is connected to the jack base. The other side is connected to the enclosure truss through 8 holes, and the jack base is welded to the lower round steel pipe with a diameter of 120 and a wall thickness of 6mm through the upper cover plate. The round steel pipe is connected to the two upper sides of the lifting frame connector through a 10mm thick connecting steel plate by bolts. The module connector is used as a connector between the rolling module and the truss. One side is provided with bolt holes corresponding to the module, and the bolt holes of the other side correspond to the truss.

[0014] The utility model mainly realizes the vertical lifting and demoulding of the formwork system without sliding with the concrete surface. By using the rolling module formwork with a PVC conveyor belt, the rolling demoulding technology is realized, which greatly reduces the lifting resistance and can realize the continuous construction of concrete. Compared with the flip formwork and climbing formwork, it has the advantages of not being affected by the age of concrete and fast overall construction speed. Compared with the sliding formwork construction, the sliding is transformed into rolling to ensure the appearance quality of the concrete. Other advantages of this system are: low formwork height, steel consumption is about 1 / 4 of the traditional mechanical climbing formwork, low production cost, high degree of mechanization, simple and stable structure, easy operation, and can be widely used in solid square piers with equal cross-sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall model diagram of the rolling template system;

[0016] Figure 2 It is the model diagram of the rolling formwork system truss;

[0017] Figure 3 It is a structural diagram of the rolling formwork system;

[0018] Figure 4 It is a schematic diagram of the chamfer rolling module;

[0019] Figure 5 It is a schematic diagram of the front of the chamfer rolling module;

[0020] Figure 6It is a schematic diagram of the back of the chamfered rolling module;

[0021] Figure 7 It is a schematic diagram of the back side of the flat rolling module;

[0022] Figure 8 It is a schematic diagram of the front of the flat rolling module;

[0023] Fig. 9 It is a schematic diagram of the rolling module structure and rolling operation;

[0024] Fig.10 It is a top view of the rolling formwork system;

[0025] In the figure: 1-outer fence, 2-inner fence, 3-operating platform, 4-lifting frame, 5-chamfered rolling module, 6-flat rolling module, 7-truss structure, 8-circle truss, 9-connecting truss, 10-lifting frame connector, 11-module connector, 12-connecting folding plate, 13-module panel, 14-folding plate bolt hole, 15-back rib, 16-module end plate, 17-end plate bolt hole, 18-PVC conveyor belt, 19-jack base. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. Example 1

[0027] like Figure 1 — Fig.10 The rolling formwork system of the solid square pier with uniform cross-section consists of an outer fence 1, an inner fence 2, an operating platform 3, a lifting frame 4, a chamfer rolling module 5, a plane rolling module 6, a truss structure 7, etc., as follows:

[0028] The outer fence 1 and the inner fence 2 are made of 50*50*5 steel pipes, forming the safety protection of the whole formwork system. The operating platform 3 is a 2.5mm patterned steel plate laid on the truss structure 7, which serves as a platform for steel bar installation and binding and concrete pouring. The lifting frame 4 is connected to the chamfer rolling module 5, the plane rolling module 6 and the truss structure 7 at the same time.

[0029] The truss structure 7 is composed of 100*100*8 angle steel as chord and 63*63*5 angle steel as web. The truss structure is composed of the ring truss 8 and the connecting truss 9 as the main force-bearing structure of the double-column pier; the width and height of the cross-sectional profile of the ring truss 8 are 1m×1.2m, and the length is determined according to the cross-sectional size of the pier column, and it is required to meet the requirement that the inner profile of the truss ring is not less than 20cm away from the outer surface of the pier column. The ring truss 8 is connected to the eight lifting frames 4 at its eight inner corners by M18 high-strength bolts. At the same time, the lifting frame 4 is connected to the ends of the chamfered rolling module 5 and the plane rolling module 6 by M18 high-strength bolts. The ring truss 8 and the connecting truss 9 are connected by M18 high-strength bolts to form the truss structure 7 together. The lifting frame 4 is connected to the module connector 11 through the lifting frame connector 10 by M18 high-strength bolts. A 10mm thick rubber pad is required to be set at the connection between the module connector 11 and the truss structure 7 as an elastic buffer device.

[0030] The encircling truss 8 is connected with the chamfered rolling module 5 and the plane rolling module 6 at eight inner corners through the module connectors 11 to form the main body of the rolling template system.

[0031] All rolling modules are characterized in that the thickness of the module panel 13 is 6mm, and the flatness of its vertical surface must reach 1%. The module panel 13 is provided with a semicircular curling edge with a diameter of 10cm on the top and bottom, and the connecting folding plates 12 with a thickness of 8mm are provided at both ends of the chamfered rolling module 5, and the module end plates 16 with a thickness of 8mm are provided at both ends of the plane rolling module 6. Eight folding plate bolt holes 14 with a hole diameter of 20mm are opened on the connecting folding plate 12, and eight end plate bolt holes 17 with a hole diameter of 20mm are opened on the module end plate 16. The back rib 15 is provided on the back of the module panel 13, and the back rib 15 is made of a square steel pipe with a wall thickness of 6mm and an outer contour of 90mm×90mm; the two ends of the back rib 15 are firmly welded to the module end plate 16, and intermittently welded to the module panel 13, so that the entire rolling module is a whole. The upper and lower curling edges of the chamfered rolling module 5 and the plane rolling module 6 panels are space arc curling templates. The vertical height of the chamfered rolling module 5 and the plane rolling module 6 is 1.2m and the total height is 1.3m. The outer surface of the panel needs to be pasted with a layer of 0.1mm polytetrafluoroethylene film, which has its own adhesive backing and can be directly bonded to the polished module panel 13. The PVC conveyor belt 18 adopts a two-cloth and two-adhesive process, with a thickness of 2mm, and its inner circumference is slightly increased by 2mm than the outer surface circumference of the module panel 13. The PVC conveyor belt 18 is sleeved on the module panel 13 to form a rolling module.

[0032] Lifting frame 4 structure see Figure 4-6, the lifting frame connector 10 is made of 140 equilateral angle steel with a wall thickness of 10mm, and one of its lower sides is connected to the two rolling modules through 8 holes, and the upper part is connected to the jack base 19. The other side is connected to the enclosure truss 8 through 8 holes. The jack base 19 is welded to the lower round steel pipe with a diameter of 120 and a wall thickness of 6mm through the upper cover plate, and the round steel pipe is connected to the two upper sides of the lifting frame connector 10 through bolts through a 10mm thick connecting steel plate. The module connector 11 is used as a connector between the rolling module and the truss. One side is set with bolt holes corresponding to the module, and the other side bolt holes correspond to the truss.

[0033] The construction diagram of rolling formwork is as follows: Figure 7-8 As shown, the outer PVC conveyor belt 18 of the rolling module rotates along the module panel 13 of the rotating module under the friction difference with concrete and tetrafluoro film. It does not slide with concrete in the vertical direction, forming a device that rolls upward along the pier column concrete surface.

[0034] The rolling formwork construction method is to locate and measure the outer edge of the pier column after the foundation is poured. After the steel bars are tied, a 10mm thick and 10cm wide rubber pad is placed along the outer edge. Then the formwork is assembled on the rubber pad. The rolling module is directly supported on the rubber pad. After the entire formwork system is assembled, the hydraulic system needs to be debugged. After the formwork is calibrated again, the first step is to directly pour 0.8m of concrete, the second step is to tie the stirrups 0.3m, the third step is to lift the rolling formwork 0.3m after the initial setting of the last poured concrete reaches 0.2MPa, and the fourth step is to pour 0.3m of concrete. The second, third, and fourth steps are cycled in sequence to complete the construction of the pier body with tied vertical steel bars. The fifth step is to tie the vertical steel bars, and the construction is cycled to the top of the pier. The fifth step is to remove the outer formwork and prepare for the next pier column construction. Example 2

[0035] like Figure 1 — Fig.10 The rolling formwork system of the solid square pier with uniform cross-section consists of an outer fence 1, an inner fence 2, an operating platform 3, a lifting frame 4, a chamfer rolling module 5, a plane rolling module 6, a truss structure 7, etc., as follows:

[0036] The outer fence 1 and the inner fence 2 are made of 50*50*5 steel pipes, forming the safety protection of the whole formwork system. The operating platform 3 is a 3mm patterned steel plate laid on the truss structure 7, which serves as a platform for steel bar installation and binding and concrete pouring. The lifting frame 4 is connected to the chamfer rolling module 5, the plane rolling module 6 and the truss structure 7 at the same time.

[0037] The truss structure 7 is composed of 100*100*8 angle steel as chord and 63*63*5 angle steel as web. The truss structure is composed of the ring truss 8 and the connecting truss 9 as the main force-bearing structure of the double-column pier; the width and height of the cross-sectional profile of the ring truss 8 are 1m×1.5m, and the length is determined according to the cross-sectional size of the pier column, and it is necessary to meet the requirement that the inner profile of the truss ring is not less than 20cm away from the outer surface of the pier column. The ring truss 8 is connected to the eight lifting frames 4 at its eight inner corners by M18 high-strength bolts. At the same time, the lifting frame 4 is connected to the ends of the chamfered rolling module 5 and the plane rolling module 6 by M18 high-strength bolts. The ring truss 8 and the connecting truss 9 are connected by M18 high-strength bolts to form a truss structure 7 together. The lifting frame 4 is connected to the module connector 11 through the lifting frame connector 10 by M18 high-strength bolts. A 10mm thick rubber pad is required to be set at the connection between the module connector 11 and the truss structure 7 as an elastic buffer device.

[0038] The encircling truss 8 is connected with the chamfered rolling module 5 and the plane rolling module 6 at eight inner corners through the module connectors 11 to form the main body of the rolling template system.

[0039] All rolling modules are characterized in that the thickness of the module panel 13 is 6mm, and the flatness of its vertical surface must reach 1%. The module panel 13 is provided with a semicircular curling edge with a diameter of 10cm on the top and bottom, and the connecting folding plates 12 with a thickness of 8mm are provided at both ends of the chamfered rolling module 5, and the module end plates 16 with a thickness of 8mm are provided at both ends of the plane rolling module 6. Eight folding plate bolt holes 14 with a hole diameter of 20mm are opened on the connecting folding plate 12, and eight end plate bolt holes 17 with a hole diameter of 20mm are opened on the module end plate 16. The back rib 15 is provided on the back of the module panel 13, and the back rib 15 is made of a square steel pipe with a wall thickness of 6mm and an outer contour of 90mm×90mm; the two ends of the back rib 15 are firmly welded to the module end plate 16, and intermittently welded to the module panel 13, so that the entire rolling module is a whole. The upper and lower curling edges of the panels of the chamfered rolling module 5 and the plane rolling module 6 are space arc curling templates. The vertical height of the chamfered rolling module 5 and the plane rolling module 6 is 1.5m, and the total height is 1.6m. The outer surface of the panel needs to be pasted with a layer of 0.2mm polytetrafluoroethylene film, which has its own adhesive backing and can be directly bonded to the polished module panel 13. The PVC conveyor belt 18 adopts a two-cloth and two-adhesive process, with a thickness of 4mm, and its inner circumference is slightly increased by 4mm than the outer surface circumference of the module panel 13. The PVC conveyor belt 18 is sleeved on the module panel 13 to form a rolling module.

[0040] Lifting frame 4 structure see Figure 4-6, the lifting frame connector 10 is made of 140 equilateral angle steel with a wall thickness of 10mm, and one of its lower sides is connected to the two rolling modules through 8 holes, and the upper part is connected to the jack base 19. The other side is connected to the enclosure truss 8 through 8 holes. The jack base 19 is welded to the lower 120 diameter 6mm thick round steel pipe through the upper cover plate, and the round steel pipe is connected to the two upper sides of the connector through a 10mm thick connecting steel plate by bolts. The module connector 11 is used as a connector between the rolling module and the truss. One side is set with bolt holes corresponding to the module, and the other side bolt holes correspond to the truss.

[0041] The construction diagram of rolling formwork is as follows: Figure 7-8 As shown, the outer PVC conveyor belt 18 of the rolling module rotates along the panel of the rotating module under the friction difference with concrete and tetrafluoroethylene membrane. It does not slide with concrete in the vertical direction, forming a device that rolls upward along the pier column concrete surface.

[0042] The rolling formwork construction method is to locate and measure the outer edge of the pier column after the foundation is poured. After the steel bars are tied, a 10mm thick and 10cm wide rubber pad is placed along the outer edge. Then the formwork is assembled on the rubber pad. The rolling module is directly supported on the rubber pad. After the entire formwork system is assembled, the hydraulic system needs to be debugged. After the formwork is calibrated again, the first step is to directly pour 1m of concrete, the second step is to tie the stirrups 0.5m, the third step is to lift the rolling formwork 0.5m after the initial setting of the last poured concrete reaches 0.2MPa, and the fourth step is to pour 0.5m of concrete. The second, third, and fourth steps are cycled in sequence to complete the construction of the pier body with tied vertical steel bars. The fifth step is to tie the vertical steel bars, and the construction is cycled to the top of the pier. The fifth step is to remove the outer formwork and prepare for the next pier column construction.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A rolling formwork system for solid double-column square piers of equal cross-section for bridges, characterized in that: It includes an outer fence (1), an inner fence (2), an operating platform (3), a lifting frame (4), a chamfered rolling module (5), a flat rolling module (6) and a truss structure (7). The outer fence (1) and the inner fence (2) are respectively arranged inside and outside the truss structure (7) to form a safety protection for the entire formwork system; the operating platform (3) is arranged on the truss structure (7) to serve as a platform for installing and tying steel bars and pouring concrete; The truss structure (7) comprises a ring truss (8) and a connecting truss (9); a lifting frame (4) is arranged on the inner corner of the ring truss (8); the lifting frame (4) is connected to a chamfered rolling module (5) and a plane rolling module (6); the lifting frame (4) is connected to a module connector (11) via a lifting frame connector (10); the ring truss (8) is connected to the chamfered rolling module (5) and the plane rolling module (6) via the module connector (11) to form a rolling template system body.

2. A rolling formwork system for solid double-column square piers of equal cross-section for bridges according to claim 1, characterized in that: The outer fence (1) and the inner fence (2) are both made of 50*50*5 steel pipes. The operating platform (3) is made of a 2.5mm patterned steel plate laid on a truss structure (7). The enclosure truss (8) and the connecting truss (9) are both made of 100*100*8 angle steel as chord members and 63*63*5 angle steel as web members. The width and height of the cross-sectional profile of the enclosure truss (8) are 1m×1.2m or 1m×1.5m, and the length is determined according to the cross-sectional size of the pier column, so that the inner profile of the truss enclosure is not less than 20cm from the outer surface of the pier column.

3. The rolling formwork system for bridge equal-section solid double-column square piers according to claim 1 is characterized in that: The truss structure (7) is provided with three enclosures, the middle enclosure is provided with an inner fence (2), and the enclosure trusses (8) on both sides are respectively connected to eight lifting frames (4) at eight inner corners by means of M18 high-strength bolts.

4. The rolling formwork system for a bridge with a solid double-column square pier with a uniform cross-section according to claim 1 is characterized in that: A 10 mm thick rubber pad is provided at the connection between the module connector (11) and the truss structure (7) as an elastic buffer device.

5. The rolling formwork system for bridge equal-section solid double-column square piers according to claim 1 is characterized in that: The chamfered rolling module (5) and the plane rolling module (6) comprise a module panel (13), the module panel (13) having a thickness of 6 mm and a vertical flatness of 1%, a semicircular curling edge with a diameter of 10 cm being arranged on the upper and lower sides of the module panel (13), an 8 mm thick connecting folding plate (12) being arranged at both ends of the chamfered rolling module (5), and an 8 mm thick module end plate (16) being arranged at both ends of the plane rolling module (6), eight folding plate bolt holes (14) with a hole diameter of 20 mm being provided on the connecting folding plate (12), and a 20 mm thick folding plate bolt hole (14) being provided on the module end plate (16). Eight end plate bolt holes (17) with a hole diameter of 20 mm are provided on the upper surface of the module panel (13). A back rib (15) is provided on the back surface of the module panel (13). The back rib (15) is made of a square steel tube with a wall thickness of 6 mm and an outer profile of 90 mm×90 mm. Both ends of the back rib (15) are firmly welded to the module end plate (16) and are intermittently welded to the module panel (13), so that the entire rolling module is an integral whole. The upper and lower curling edges of the module panel (13) are space arc curling templates. A PVC conveyor belt (18) is installed on the module panel (13) to form a rolling module.

6. A rolling formwork system for solid double-column square piers of equal cross-section for bridges according to claim 5, characterized in that: The chamfered rolling module (5) and the plane rolling module (6) have a vertical height of 1.2 m or 1.5 m, and a total height of 1.3 m or 1.6 m.

7. The rolling formwork system for a bridge with a solid double-column square pier with a uniform cross-section according to claim 5 is characterized in that: A layer of 0.1 mm to 0.2 mm polytetrafluoroethylene film is adhered to the outer surface of the module panel (13); the polytetrafluoroethylene film has its own adhesive backing and can be directly bonded to the module panel (13) after grinding and polishing.

8. The rolling formwork system for a bridge with a solid double-column square pier with a uniform cross-section according to claim 5 is characterized in that: The PVC conveyor belt (18) is made of two cloths and two rubbers, has a thickness of 2 mm to 4 mm, and an inner circumference that is 2 mm to 4 mm greater than the outer surface circumference formed by the panel (13).

9. The rolling formwork system for bridge equal-section solid double-column square piers according to claim 1 is characterized in that: The lifting frame (4) is made of 140 equilateral angle steel with a wall thickness of 10 mm as a lifting frame connector (10), and the lower part of one support side is connected to the two rolling modules through 8 holes respectively, and the upper part is connected to the jack base (19); the other support side is connected to the enclosure truss through 8 holes, and the jack base (19) is welded to the lower part of the 120 diameter and 6 mm thick round steel pipe through the upper cover plate, and the round steel pipe is connected to the two upper support sides of the lifting frame connector (10) through a 10 mm thick connecting steel plate by bolts. The module connecting piece (11) is used as a connecting piece between the rolling module and the truss. One support side is provided with bolt holes corresponding to the modules, and the bolt holes of the other support side correspond to the truss.

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