A hydraulic climbing formwork system for thin-walled piers and its construction method

Abstract

The present invention relates to the technical field of bridge construction, and specifically relates to a hydraulic climbing formwork system for thin-walled piers and its construction method, including layer A, layer B, and layer C. Layer C is at the lowest end, layer B is between layer A and layer C, and fixed flange connection plates are provided at the four corners of layer A, layer B, and layer C. Hydraulic fixed plates are provided on both sides of the front formwork of layer A and the front formwork of layer C. A hydraulic cylinder top controlled by a controller is provided between the two hydraulic fixed plates. A plurality of tie rod holes are provided on the front formwork of layer A, the front formwork of layer B, and the front formwork of layer C. Tie rods pass through the tie rod holes and are fixed with nuts. The present invention eliminates the cost of tower cranes and the basic consumables for tower crane installation, effectively improves the construction progress, ensures the personal safety of workers, improves the work efficiency of pier construction, and thus reduces the construction cost of the project.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a thin-wall pier hydraulic climbing formwork system and a construction method thereof. Background Art

[0002] In the past, cement bridge piers were constructed in the following ways: 1. The cement was cast in the mold to set the shape. After the cast cement solidified and formed, the bottom template was disassembled, and the bottom template was lifted up by a crane to connect with the upper template. It was fixed with screws, positioning pins, pull rods, etc., and then cement was poured to achieve the purpose of pouring; 2. Through a simple combination of turning and climbing, the template was lifted by a through-type jack through a pre-buried steel pipe load-bearing climbing frame, a hand winch or a crane to achieve the purpose of installing the pier body template for pouring. The above method will have the following problems and disadvantages: 1. The frequency of use of the crane is high when using the turning mold construction, so the construction cost is high. In particular, when using the turning mold construction, the workers are standing on the template to carry out the construction, the construction safety factor is low, and there is usually a risk of workers and the template falling; 2. The pre-buried load-bearing steel pipe loss cost of the template using the climbing and turning combination is high, and the lifting operation process of the jack is cumbersome, so the work efficiency is low. In particular, after the pier body is completed, the entire set of templates must also be disassembled by a crane, and the safety risk of disassembly is high.

[0003] The pier cap construction of these two construction techniques requires reliance on large-scale mechanical lifting, which results in high construction costs. Summary of the invention

[0004] According to the problems raised in the background technology, the present invention provides a thin-wall pier hydraulic climbing formwork system and a construction method thereof to solve the problems. The present invention will be further elaborated below.

[0005] A thin-wall pier hydraulic climbing formwork system, comprising an A layer, a B layer, and a C layer, wherein the C layer is at the lowest end, and the B layer is between the A layer and the C layer; the A layer is composed of two A layer front formworks and two A layer side formworks, the B layer is composed of two B layer front formworks and two B layer side formworks, and the C layer is composed of two C layer front formworks and two C layer side formworks; the A layer front formwork, the B layer front formwork, the C layer front formwork, and the A layer side formwork, the B layer side formwork, and the C layer side formwork are all provided with a plurality of evenly placed hydraulic formworks. Flat horizontal plate, and multiple reinforcement plates are evenly arranged in the vertical direction, the front template of layer A, the front template of layer B, the front template of layer C, and the side template of layer A, the side template of layer B, and the side template of layer C are all provided with flange connection plates around, and the flange connection plates are evenly provided with multiple threaded holes, and the four corners of layer A, layer B and layer C are provided with fixed flange connection plates, and the fixed flange connection plates are fixed with the flange connection plates in the vertical direction by bolts, and the adjacent layers A, layer B and layer C are fixed with bolts through the flange connection plates in the horizontal direction;

[0006] Hydraulic fixed plates are provided on both sides of the front templates of layer A and layer C. Grooves corresponding to the cross plates are provided on the hydraulic fixed plates. The hydraulic fixed plates are welded to the cross plates through the grooves. Through holes are also provided on the hydraulic fixed plates. A hydraulically actuated cylinder jack controlled by a controller is provided between the two hydraulic fixed plates. Hydraulic jack fixed wheels are provided at both ends of the hydraulically actuated cylinder jack. The hydraulic fixed plates are fixed to the hydraulic jack fixed wheels through the through holes using pin shafts. A plurality of tie rod holes are provided on the front templates of layer A, layer B, and layer C. Tie rods pass through the tie rod holes and are fixed with nuts.

[0007] Preferably, outer frame support brackets are further provided on both sides of the front template of layer C, and outer frame guide brackets are further provided on both sides of the front template of layer A. A climbing formwork outer frame is installed through the outer frame support brackets and the outer frame guide brackets. The climbing formwork outer frame is fixed to the outer frame support brackets and the outer frame guide brackets through bolts.

[0008] Preferably, a reinforcement platform is provided on one side of the hydraulic fixed plate. The reinforcement platform is in the same position as the through hole, and a fixing hole with the same size as the through hole is provided in the middle of the reinforcement platform.

[0009] Preferably, a plurality of walkway frames are provided at the lower end of layer C and inside the climbing formwork outer frame; climbing ladders are further provided between adjacent walkway frames.

[0010] Preferably, a traveling crane rail is provided at the upper end of the climbing formwork outer frame. A traveling crane motor controlled by a controller is provided below the traveling crane rail. The traveling crane motor can slide on the traveling crane rail. A gantry crane is provided below the traveling crane motor.

[0011] Preferably, the reinforcement plate is a channel steel.

[0012] Preferably, it further includes layer D, layer E, layer F, and through holes provided in the pier concrete. There are two through holes. Through rods pass through the through holes. Adjusting mechanisms are tied and fixed on site before and after each through rod. I-beams are provided on the adjusting mechanisms. Layer D is fixed to the I-beams.

[0013] Layer D is composed of two front templates of layer D and two side templates of layer D. Layer E is composed of two front templates of layer E and two side templates of layer E. Layer F is composed of two front templates of layer F and one side template of layer F.

[0014] The front template of the D layer, the side template of the D layer, the front template of the E layer, the side template of the E layer, the front template of the F layer, and the side template of the F layer are all provided with a plurality of horizontally placed horizontal cross plates, and a plurality of reinforcing plates are evenly arranged in the vertical direction. The flange connecting plates are provided around the E layer, and fixed flange connecting plates are also provided at the four corners of the E layer. The fixed flange connecting plates are fixed to the flange connecting plates in the vertical direction by bolts. Adjacent D layers, E layers, and F layers are fixed by bolts through the flange connecting plates in the horizontal direction. A steel bar skeleton is provided around the inner periphery of the D layer. The front templates of the D layer, the E layer, and the F layer are also provided with a plurality of pull rod holes, and pull rods are passed through the pull rod holes and fixed with nuts;

[0015] Preferably, the adjusting mechanism includes a U-shaped groove. Two threaded through holes are provided at the bottom of one side of the U-shaped groove, and bolts are provided on the threaded through holes. An iron block is provided at the upper end of the U-shaped groove, and sand is provided below the iron block;

[0016] Preferably, the distance from the through hole to the upper end of the pier body concrete is 1m;

[0017] A construction method for a thin-walled pier hydraulic climbing formwork system based on the above thin-walled pier hydraulic climbing formwork system includes the following steps:

[0018] S1: Pour the bearing platform concrete. After the concrete reaches the strength, start tying the steel bars of the first form of the pier body. Then install the C layer formwork, B layer formwork, and A layer formwork, and fix them with bolts, and tighten them with fixed flange connecting plates. Pass the pull rods through the pull rod holes and fix them;

[0019] S2: Install the hydraulic fixing plate, the outer frame support frame, and the outer frame guiding frame, pour the concrete of the first form of the pier body, and wait for the concrete to reach the strength; then install the hydraulic cylinder top and the climbing formwork outer frame, and install the inner walkway frame and the traveling component of the climbing formwork outer frame;

[0020] S3: Control the traveling motor to hoist the steel bars of the second form of the pier body, remove the fastening pull rods on the front templates of the A layer and the B layer, and the formwork removing device opens the formwork of the A layer and the B layer and polishes the formwork;

[0021] S4: Control the hydraulic cylinder top to move upward through the controller. At this time, the lower end of the hydraulic cylinder top fixed to the front template of the C layer remains stationary, so that the formwork of the A layer and the B layer moves upward;

[0022] S5: Fix the pull rods on the front templates of the A layer and the B layer, pour the concrete of the second form of the pier body. After the concrete reaches the strength, remove the fastening pull rods on the front template of the C layer, the formwork removing device opens the formwork of the C layer and polishes the formwork, and remove the fixing bolts on the outer frame guiding frame of the front template of the A layer;

[0023] S6: Control the upper end of the hydraulic cylinder on the top and bottom of the pier to move upward through the controller. At this time, the upper end of the hydraulic cylinder fixed to the front formwork of layer A remains stationary, causing the formwork of layer C to move upward. Since the climbing formwork outer frame is fixed to the formwork of layer C, the entire climbing formwork outer frame is lifted; S7: Fix the tie rods on the front formwork of layer C and the bolts on the guide frame of the outer formwork of the front formwork of layer A, and control the traveling crane to hoist the steel bars for the third pier body formwork and pour the concrete for the third pier body formwork. Repeat this process until the last formwork of the pier body is poured;

[0024] S8: Install the lifting jacking rod by controlling the traveling crane, tie and adjust the mechanism, install it at both ends of the jacking rod, and then install the load-bearing I-beam at the top of the U-shaped groove. Install the lifting jacking rod by controlling the traveling crane, adjust the load-bearing I-beam to an appropriate height through the adjustment mechanism, and then hoist the bottom formwork of the capping beam through the traveling crane;

[0025] S9: Hoist the formwork of layer D, layer E, and layer F by controlling the traveling crane motor and fix them with bolts;

[0026] S10: Hoist the steel bar cage by controlling the traveling crane motor, install and fix it inside the formwork of layer D with bolts, pass the tie rod through the tie rod hole and fix it, and pour the concrete. Wait for the concrete to reach the required strength;

[0027] S11: Remove the fixed tie rods on the front formwork, the front formwork of layer E, and the front formwork of layer F, as well as the bolts between the formwork of layer D, layer E, and layer F. Control the traveling crane motor to hoist the components;

[0028] S12: Remove the fastening tie rods on the front formwork of layer C, open the formwork of layer C with the formwork removal device and polish the formwork, and remove the fixed bolts on the guide frame of the outer formwork of the front formwork of layer A;

[0029] S13: Control the lower end of the hydraulic cylinder on the top and bottom to move downward through the controller. At this time, the upper end of the hydraulic cylinder fixed to the front formwork of layer A remains stationary, causing the formwork of layer C to move downward. Since the climbing formwork outer frame is fixed to the formwork of layer C, the entire climbing formwork outer frame is lowered;

[0030] S14: Remove the fastening tie rods on the front formwork of layer A and the front formwork of layer B, open the formwork of layer A and layer B with the formwork removal device and polish the formwork;

[0031] S15: Control the upper end of the hydraulic cylinder to move downward through the controller. At this time, the lower end of the hydraulic cylinder fixed to the front formwork of layer C remains stationary, causing the formwork of layer A and layer B to move downward. Repeat this process to lower the entire climbing formwork device until it reaches the ground for removal, completing the construction of the entire thin-wall pier.

[0032] S15: Control the upper end of the hydraulic cylinder to move downward through the controller. At this time, the lower end of the hydraulic cylinder fixed to the front formwork of layer C remains stationary, causing the formwork of layer A and layer B to move downward. Repeat this process to lower the entire climbing formwork device until it reaches the ground for removal, completing the construction of the entire thin-wall pier.

[0033] Beneficial effects: Compared with the prior art, the present invention reduces the cost of basic consumables for tower crane installation, effectively improves the construction progress, ensures the personal safety of workers, improves the work efficiency of pier construction, and thus reduces the construction cost of the project. Brief Description of the Drawings

[0034] Figure 1 : Axonometric structural schematic diagram of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0035] Figure 2 : Axonometric structural schematic diagram of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention with the climbing formwork outer frame and walkway frame removed;

[0036] Figure 3 : Front view of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention with the climbing formwork outer frame and walkway frame removed;

[0037] Figure 4 : Structural schematic diagram of the hydraulic fixed plate of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0038] Figure 5 : Enlarged structural schematic diagram at position A of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0039] Figure 6 : Enlarged structural schematic diagram at position B of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0040] Figure 7 : Enlarged structural schematic diagram at position C of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0041] Figure 8 : Enlarged structural schematic diagram at position D of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0042] Figure 9 : Another axonometric structural schematic diagram of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0043] Figure 10 : Frontal structural schematic diagram with the climbing formwork outer frame removed at position E of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0044] Figure 11 : Left-side structural schematic diagram with the climbing formwork outer frame removed at position E of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0045] Figure 12 : Structural schematic diagram of the adjusting mechanism of a hydraulic climbing formwork system for thin-walled piers and its construction method according to the present invention;

[0046] In the figure: Layer A 1, Layer B 2, Layer C 3, front template of Layer A 4, side template of Layer A 5, front template of Layer B 6, side template of Layer B 7, front template of Layer C 8, side template of Layer C 9, horizontal plate 10, reinforcement plate 11, flange connection plate 12, threaded hole 13, fixed flange connection plate 14, hydraulic fixed plate 15, groove 151, through hole 152, reinforcement platform 153, hydraulic cylinder top 16, hydraulic top fixed wheel 161, pin shaft 17, pull rod hole 18, outer frame support 19, outer frame guide 20, climbing formwork outer frame 21, walkway frame 22, climbing ladder 23, traveling crane rail 24, traveling crane motor 25, gantry crane 26, Layer D 27, front template of Layer D 271, side template of Layer D 272, Layer E 28, front template of Layer E 281, side template of Layer E 282, Layer F 29, front template of Layer F 291, side template of Layer F 292, through hole 30, through rod 31, adjusting mechanism 32, U-shaped groove 321, bolt 322, iron block 323, sand 324, I-beam 33; Specific embodiments

[0047] Next, in combination with the attached Figures 1-12 A specific embodiment of the present invention will be elaborated in detail.

[0048] As Figure 2 shown: A hydraulic climbing formwork system for a thin-walled pier, including Layer A 1, Layer B 2, and Layer C 3. Layer C 3 is at the lowest end, Layer B 2 is between Layer A 1 and Layer C 3. Layer A 1 is composed of two front templates of Layer A 4 and two side templates of Layer A 5. Layer B 2 is composed of two front templates of Layer B 6 and two side templates of Layer B 7. Layer C 3 is composed of two front templates of Layer C 8 and two side templates of Layer C 9. A plurality of horizontally arranged horizontal plates 10 are evenly arranged on the front templates of Layer A 4, front templates of Layer B 6, front templates of Layer C 8 and side templates of Layer A 5, side templates of Layer B 7, side templates of Layer C 9, and a plurality of reinforcement plates 11 are evenly arranged in the vertical direction. Flange connection plates 12 are arranged around the front templates of Layer A 4, front templates of Layer B 6, front templates of Layer C 8 and side templates of Layer A 5, side templates of Layer B 7, side templates of Layer C 9. A plurality of threaded holes 13 are evenly arranged on the flange connection plates 12. Fixed flange connection plates 14 are arranged at the four corners of Layer A 1, Layer B 2, and Layer C 3. The fixed flange connection plates 14 are fixed to the flange connection plates 12 in the vertical direction through bolts. Adjacent Layer A 1, Layer B 2, and Layer C are fixed through the flange connection plates 12 in the horizontal direction with bolts;

[0049] As Figure 4 and 5As shown: Hydraulic fixed plates 15 are provided on both sides of the front template 4 of layer A and the front template 8 of layer C. Grooves 151 corresponding to the cross plate 10 are provided on the hydraulic fixed plates 15. The hydraulic fixed plates 15 are welded to the cross plate 10 through the grooves 151. Through holes 152 are also provided on the hydraulic fixed plates 15. A hydraulic cylinder top 16 controlled by a controller is provided between the two hydraulic fixed plates 15. Hydraulic top fixed wheels 161 are provided at both ends of the hydraulic cylinder top 16. Through the through holes 152, the hydraulic fixed plates 15 and the hydraulic top fixed wheels 161 are fixed with a pin shaft 17.

[0050] As Figure 3 shown: A plurality of pull rod holes 18 are provided on the front templates 4 of layer A, the front templates 6 of layer B, and the front templates 8 of layer C. Pull rods (not shown in the figure) pass through the pull rod holes 18 and are fixed with nuts.

[0051] Furthermore, as Figure 1 shown: Outer frame support frames 19 are further provided on both sides of the front template 8 of layer C, and outer frame guide frames 20 are provided on both sides of the front template 4 of layer A. A climbing formwork outer frame 21 is installed through the outer frame support frames 19 and the outer frame guide frames 20. The climbing formwork outer frame 21 is fixed to the outer frame support frames 19 and the outer frame guide frames 20 with bolts.

[0052] Furthermore, as Figure 4 shown: In order to make the fixation of the hydraulic top fixed wheels 161 more firm, a reinforcement platform 153 is provided on one side of the hydraulic fixed plate 15. The reinforcement platform 153 is in the same position as the through hole 152, and a fixing hole (not shown in the figure) with the same size as the through hole 152 is provided in the middle of the reinforcement platform 153.

[0053] Furthermore, as Figure 1 shown: A plurality of walkway frames 22 are provided at the lower end of layer C and inside the climbing formwork outer frame 21; as Figure 8 shown: A climbing ladder 23 is further provided between adjacent walkway frames 22 for workers to install, disassemble, and repair the climbing formwork system.

[0054] Furthermore, as Figure 7 shown: A traveling crane rail 24 is provided at the upper end of the climbing formwork outer frame 21. A traveling crane motor 25 controlled by a controller is provided below the traveling crane rail 24. The traveling crane motor 25 can slide on the traveling crane rail 24. A traveling crane 26 is provided below the traveling crane motor 25 for transporting components required in the climbing formwork system.

[0055] Furthermore, the reinforcement plate 11 is a channel steel.

[0056] Furthermore, as Figure 10 and 11As shown in the figure, it further includes a D layer 27, an E layer 28, an F layer 29, and a through-hole 30 provided on the pier body concrete. There are two through-holes 30, and the through-holes 30 pass through the through-rods 31. On each through-rod 31, an adjusting mechanism 32 is tied on-site before and after. An I-beam 33 is provided on the adjusting mechanism 32. The D layer 27 is fixed to the I-beam 33. The D layer 27 is composed of two D-layer front templates 271 and two D-layer side templates 272. The E layer 28 is composed of two E-layer front templates 281 and two E-layer side templates 282. The F layer 29 is composed of two F-layer front templates 291 and one F-layer side template 292. The D-layer front template 271, the D-layer side template 272, the E-layer front template 281, the E-layer side template 282, the F-layer front template 291, and the F-layer side template 292 are all provided with a plurality of horizontally placed horizontal cross-boards 10, and a plurality of reinforcing plates 11 are evenly provided in the vertical direction. The flange connecting plates 12 are provided around the E layer 28, and fixed flange connecting plates 14 are also provided at the four corners of the E layer 28. The fixed flange connecting plates 14 are fixed to the flange connecting plates 12 in the vertical direction by bolts. The adjacent D layer 27, the E layer 28, and the F layer 29 are fixed by bolts through the flange connecting plates 12 in the horizontal direction. A steel bar framework is provided around the inside of the D layer 27. The D-layer front template 271, the E-layer front template 281, and the F-layer front template 291 are also all provided with a plurality of pull rod holes 18. A pull rod (not shown in the figure) passes through the pull rod holes and is fixed with nuts;

[0057] Further, as Figure 12 shown in the figure: The adjusting mechanism 32 includes a U-shaped groove 321. Two threaded through-holes are provided at the bottom of one side of the U-shaped groove 321. Bolts 322 are provided on the threaded through-holes. An iron block 323 is provided at the upper end of the U-shaped groove 321. Sandy soil 324 is provided below the iron block 323. By loosening the bolts, the sandy soil flows out, so that the iron block 322 slowly descends without hard collision;

[0058] Further, the distance between the through-hole 30 and the upper end of the pier body concrete is 1 m;

[0059] The present invention further includes a construction method of a thin-wall pier hydraulic climbing formwork system based on the above thin-wall pier hydraulic climbing formwork system, including the following steps:

[0060] S1: Pour the pile cap concrete. After the concrete reaches the strength, start tying the steel bars of the first form of the pier body. Then install the C-layer formwork, the B-layer formwork, and the A-layer formwork, and fix them with bolts, and tighten them with fixed flange connecting plates. Pass the pull rod through the pull rod hole and fix it;

[0061] S2: Install the hydraulic fixing plate, the outer frame support bracket and the outer frame guiding bracket, pour the concrete for the first form of pier body, and wait for the concrete to reach the required strength. Thereafter, install the hydraulic cylinder top and the climbing formwork outer frame, and install the inner walkway frame and the traveling component of the climbing formwork outer frame.

[0062] S3: Control the traveling motor to hoist the steel bars for the second form of pier body, remove the fastening tie rods on the front formwork of Layer A and Layer B, and the formwork removal device opens the formwork of Layer A and Layer B and grinds the formwork.

[0063] S4: Control the upper end of the hydraulic cylinder top to move upward through the controller. At this time, the lower end of the hydraulic cylinder top fixed to the front formwork of Layer C remains stationary, so that the formwork of Layer A and Layer B moves upward.

[0064] S5: Fix the tie rods on the front formwork of Layer A and Layer B, pour the concrete for the second form of pier body. After the concrete reaches the strength, remove the fastening tie rods on the front formwork of Layer C, the formwork removal device opens the formwork of Layer C and grinds the formwork, and remove the fixing bolts on the outer frame guiding bracket of the front formwork of Layer A.

[0065] S6: Control the lower end of the hydraulic cylinder top to move upward through the controller. At this time, the upper end of the hydraulic cylinder top fixed to the front formwork of Layer A remains stationary, so that the formwork of Layer C moves upward. Since the climbing formwork outer frame is fixed to the formwork of Layer C, the entire climbing formwork outer frame is lifted.

[0066] S7: Fix the tie rods on the front formwork of Layer C and the bolts on the outer frame guiding bracket of the front formwork of Layer A, control the traveling motor to hoist the steel bars for the third form of pier body, and pour the concrete for the third form of pier body. Repeat this process until the last form of the pier body is poured.

[0067] S8: Install the lifting jacking rod by controlling the traveling crane, tie and adjust the mechanism, install it at both ends of the jacking rod, and then install the load-bearing I-beam at the top of the U-shaped groove. Install the lifting jacking rod by controlling the traveling crane, adjust the load-bearing I-beam to an appropriate height through the adjusting mechanism, and then hoist the cover beam bottom formwork by the traveling crane.

[0068] S9: Hoist the formwork of Layer D, Layer E and Layer F by controlling the traveling motor and fix them with bolts.

[0069] S10: Hoist the steel bar cage by controlling the traveling motor, install and fix it inside the formwork of Layer D with bolts, pass the tie rod through the tie rod hole and fix it, and pour the concrete. Wait for the concrete to reach the strength.

[0070] S11: Remove the fixed tie rods on the front formwork, the front formwork of Layer E and the front formwork of Layer F, as well as the bolts between the formwork of Layer D, Layer E and Layer F. Control the traveling motor to hoist the components down.

[0071] S12: Remove the fastening tie rods on the front formwork of Layer C. The formwork removal device opens the formwork of Layer C and grinds the formwork. Remove the fixing bolts on the guiding frame of the external scaffold of the front formwork of Layer A.

[0072] S13: Control the lower end of the hydraulic cylinder top to move downward through the controller. At this time, the upper end of the hydraulic cylinder top fixed to the front formwork of Layer A remains stationary, causing the formwork of Layer C to move downward. Since the climbing formwork external scaffold is fixed to the formwork of Layer C, the entire climbing formwork external scaffold descends.

[0073] S14: Remove the fastening tie rods on the front formwork of Layer A and Layer B. The formwork removal device opens the formwork of Layer A and Layer B and grinds the formwork.

[0074] S15: Control the upper end of the hydraulic cylinder top to move downward through the controller. At this time, the lower end of the hydraulic cylinder top fixed to the front formwork of Layer C remains stationary, causing the formwork of Layer A and Layer B to move downward. Repeat this process to make the entire climbing formwork device move downward until it reaches the ground for removal, completing the construction of the entire thin-walled pier.

[0075] Compared with the prior art, the present invention eliminates the cost of tower cranes and the basic consumables for tower crane installation, effectively improves the construction progress, ensures the personal safety of workers, improves the work efficiency of pier construction, and thus reduces the construction cost of the project.

[0076] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic climbing formwork system for thin-walled piers, characterized in that: it includes layer A, layer B, and layer C, with layer C at the lowest end and layer B between layer A and layer C; layer A is composed of two front templates of layer A and two side templates of layer A, layer B is composed of two front templates of layer B and two side templates of layer B, and layer C is composed of two front templates of layer C and two side templates of layer C; a plurality of horizontally placed horizontal plates are evenly arranged on the front templates of layer A, front templates of layer B, front templates of layer C, side templates of layer A, side templates of layer B, and side templates of layer C, and a plurality of reinforcing plates are evenly arranged in the vertical direction. Flange connecting plates are provided around the front templates of layer A, front templates of layer B, front templates of layer C, side templates of layer A, side templates of layer B, and side templates of layer C. The flange connecting plates are evenly provided with a plurality of threaded holes. Fixed flange connecting plates are provided at the four corners of layer A, layer B, and layer C. The fixed flange connecting plates are fixed to the flange connecting plates in the vertical direction by bolts, and adjacent layer A, layer B, and layer C are fixed by bolts through the flange connecting plates in the horizontal direction; hydraulic fixing plates are provided on both sides of the front templates of layer A and front templates of layer C. Grooves corresponding to the horizontal plates are provided on the hydraulic fixing plates. The hydraulic fixing plates are welded to the horizontal plates through the grooves. Through holes are also provided on the hydraulic fixing plates. A hydraulically actuated cylinder jack controlled by a controller is provided between the two hydraulic fixing plates. Hydraulic jack fixing wheels are provided at both ends of the hydraulically actuated cylinder jack. Through the through holes, the hydraulic fixing plates are fixed to the hydraulic jack fixing wheels with pin shafts. A plurality of pull rod holes are provided on the front templates of layer A, front templates of layer B, and front templates of layer C. Pull rods pass through the pull rod holes and are fixed with nuts; outer frame support brackets are also provided on both sides of the front templates of layer C. Outer frame guiding brackets are provided on both sides of the front templates of layer A. The climbing formwork outer frame is installed through the outer frame support brackets and the outer frame guiding brackets. The climbing formwork outer frame is fixed to the outer frame support brackets and the outer frame guiding brackets by bolts; it also includes layer D, layer E, layer F, and core holes provided on the pier concrete. There are two core holes. The core holes pass through core bars. Adjusting mechanisms are tied on-site before and after each core bar. I-beams are provided on the adjusting mechanisms. Layer D is fixed to the I-beams. Adjacent layer D, layer E, and layer F are fixed by bolts through the flange connecting plates in the horizontal direction; a reinforcing platform is provided on one side of the hydraulic fixing plate. The reinforcing platform is in the same position as the through hole, and a fixing hole with the same size as the through hole is provided in the middle of the reinforcing platform; a plurality of walkway frames are provided at the low end of layer C and inside the climbing formwork outer frame; climbing ladders are also provided between adjacent walkway frames; a traveling crane rail is provided at the upper end of the climbing formwork outer frame. A traveling crane motor controlled by a controller is provided below the traveling crane rail. The traveling crane motor can slide on the traveling crane rail. A hoist is provided below the traveling crane motor.

2. The hydraulic climbing formwork system for thin-walled piers according to claim 1, characterized in that: The reinforcement plate is a channel steel.

3. A thin-wall pier hydraulic climbing formwork system according to claim 1, Features: The D layer is composed of two D layer front templates and two D layer side templates, the E layer is composed of two E layer front templates and two E layer side templates, and the F layer is composed of two F layer front templates and one F layer side template; The D layer front formwork, the D layer side formwork, the E layer front formwork, the E layer side formwork, the F layer front formwork, and the F layer side formwork are all provided with a plurality of evenly placed horizontal cross plates, and a plurality of the reinforcement plates are evenly provided in the vertical direction, the E layer is provided with flange connecting plates all around, and the E layer is also provided with fixed flange connecting plates at the four corners, and the fixed flange connecting plates are fixed to the flange connecting plates in the vertical direction by bolts, and the D layer is provided with a steel bar skeleton all around, and the D layer front formwork, the E layer front formwork, and the F layer front formwork are also provided with a plurality of tie rod holes, and tie rods pass through the tie rod holes and are fixed with nuts.

4. A thin-wall pier hydraulic climbing formwork system according to claim 3, Features: The adjustment mechanism comprises a U-shaped groove, two threaded through holes are arranged at the bottom of one side of the U-shaped groove, bolts are arranged on the threaded through holes, an iron block is arranged at the upper end of the U-shaped groove, and sand is arranged under the iron block.

5. A thin-wall pier hydraulic climbing formwork system according to claim 3, Features: The through hole is 1m away from the upper end of the pier body concrete.

6. A construction method for a thin-walled pier hydraulic climbing formwork system. Features: The construction method is based on a thin-wall pier hydraulic climbing formwork system as described in any one of claims 1 to 5, and comprises the following steps: S1: Pour the cap concrete. When the concrete reaches the required strength, start tying the first pier body reinforcement. Then install the C-layer formwork, B-layer formwork, and A-layer formwork. Fix them with bolts and fasten them with the fixed flange connection plate. Pass the tie rod through the tie rod hole and fix them. S2: Install the hydraulic fixing plate, the outer frame support frame and the outer frame guide frame, pour the first formwork pier concrete, and wait until the concrete reaches the strength; then install the hydraulic cylinder top and the climbing formwork outer frame, install the inner walkway frame and the crane assembly of the climbing formwork outer frame; S3: Control the crane motor to hoist the steel bars of the second mold pier, remove the fastening rods on the front formwork of the A layer and the front formwork of the B layer, and use the mold removal device to open the A layer and B layer formwork and grind the formwork; S4: The controller controls the upper end of the hydraulic cylinder to move upward. At this time, the lower end of the hydraulic cylinder that fixes the front template of the C layer is fixed, so that the templates of the A layer and the B layer move upward. S5: Fix the tie rods on the A-layer front formwork and the B-layer front formwork, pour the second formwork pier body concrete, and after the concrete reaches the required strength, remove the fastening tie rods on the C-layer front formwork. Use the formwork removal device to open the C-layer formwork and grind the formwork, and remove the fixing bolts on the guide frame of the A-layer front formwork outer frame. S6: Control the upper end of the hydraulic cylinder at the top and bottom to move upward through the controller. At this time, the upper end of the hydraulic cylinder fixed to the front formwork of Layer A remains stationary, causing the formwork of Layer C to move upward. Since the climbing formwork outer frame is fixed to the formwork of Layer C, the entire climbing formwork outer frame is lifted; S7: Fix the tie rods on the front formwork of Layer C and the bolts on the guide frame of the outer formwork of the front formwork of Layer A. Control the traveling motor to hoist the steel bars for the third pier body form and pour the concrete for the third pier body form. Repeat this process until the last form of the pier body is poured; S8: Install the lifting center rod by controlling the traveling crane, tie and adjust the mechanism, and install it at both ends of the center rod. Then install the load-bearing I-beam at the top of the U-shaped groove. Install the lifting center rod by controlling the traveling crane, adjust the load-bearing I-beam to an appropriate height through the adjusting mechanism, and then hoist the cover beam bottom form through the traveling crane; S9: Hoist the formwork of Layer D, Layer E, and Layer F by controlling the traveling motor and fix them with bolts; S10: Hoist the steel bar cage by controlling the traveling motor, install and fix it inside the formwork of Layer D with bolts, pass the tie rod through the tie rod hole and fix it, and pour the concrete. Wait for the concrete to reach the required strength; S11: Remove the fixed tie rods on the front formwork of Layer D, Layer E, and Layer F, and the bolts between the formwork of Layer D, Layer E, and Layer F. Control the traveling motor to hoist the components down; S12: Remove the fastening tie rods on the front formwork of Layer C. The form removal device opens the formwork of Layer C and grinds the formwork. Remove the fixed bolts on the guide frame of the outer formwork of the front formwork of Layer A; S13: Control the lower end of the hydraulic cylinder at the top and bottom to move downward through the controller. At this time, the upper end of the hydraulic cylinder fixed to the front formwork of Layer A remains stationary, causing the formwork of Layer C to move downward. Since the climbing formwork outer frame is fixed to the formwork of Layer C, the entire climbing formwork outer frame is lowered; S14: Remove the fastening tie rods on the front formwork of Layer A and Layer B. The form removal device opens the formwork of Layer A and Layer B and grinds the formwork; S15: Control the upper end of the hydraulic cylinder to move downward through the controller. At this time, the lower end of the hydraulic cylinder fixed to the front formwork of Layer C remains stationary, causing the formwork of Layer A and Layer B to move downward. Repeat this process to lower the entire climbing formwork device until it reaches the ground and is removed, completing the construction of the entire thin-walled pier.

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