Special-shaped section bidirectional hydraulic self-elevating type creeping formwork system and creeping formwork method thereof

Abstract

The invention relates to the technical field of water conservancy and hydropower engineering construction, and provides a special-shaped section bidirectional hydraulic self-elevating type creeping formwork system and a creeping formwork method thereof. Compared with construction of an ultra-deep (high) shaft type special-shaped section mass concrete structure, the construction scheme of a slip form, an ultra-high scaffold loose form or a customized turnover form of the structure is conventionally adopted; a special-shaped-section bidirectional hydraulic self-elevating type creeping formwork method is adopted, concrete pouring slump control is facilitated, the formwork can be lifted after it is determined that concrete meets the strength requirement, the safety coefficient of formwork lifting is overall improved, and the requirement for concrete strength and formwork lifting time precision control is lowered; the operation platform is hung on the self-climbing template, so that the erection of an ultrahigh bent frame can be avoided, the number of hoisting machinery is reduced, the construction efficiency is improved to a great extent, and the economic benefit is good; each group of creeping formworks of the inner wall and the outer wall can climb independently, safety and stability in the construction process can be guaranteed, the possibility of construction accidents is reduced, and the safety coefficient is high.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydropower engineering construction, in particular to a special-section bidirectional hydraulic self-elevating climbing formwork system and a climbing formwork method thereof. Background Art

[0002] In water conservancy and hydropower projects, a water well is usually set up downstream of the inverted siphon tunnel. The water well mainly connects the pressure tunnel and the pressureless tunnel to form a flow passage. During tunnel maintenance, water will be pumped from the pressure tunnel on the upstream side to the pressureless tunnel on the downstream side. The structure of the water well is a well in a well, the outer well is used for flow, and the inner well is a dry well.

[0003] In water conservancy and hydropower projects, the concrete construction of the shaft in the vertical shaft has always been a difficult and important construction point. The reason is that the shafts in water conservancy and hydropower projects are usually deep and have many operation procedures. The construction process is affected by the special environment and construction characteristics, and there are high safety risks. Traditional construction methods require a large number of personnel and material inputs, and there are many unsafe factors, which are prone to safety accidents. The progress of the concrete construction of the shaft in the vertical shaft often becomes a key factor in the overall project being put into production on schedule.

[0004] For the special-section structure of the shaft in the ultra-deep vertical shaft, such as a circular shaft with a rectangular elevator shaft in part, this structure is usually more than 50 meters deep. Due to the particularity of ultra-deep large-volume special-shaped concrete structures, it is necessary to study the method of synchronous construction of the inner shaft and the elevator shaft. If slipform construction is adopted, the uneven force of the inner and outer slipform cylinders during the sliding process can easily lead to structural distortion, thereby causing the shaft to shift, and the control requirements for concrete strength and formwork lifting time are extremely high. This method also has quality risks such as the difficulty in controlling the slump and initial setting time of concrete. If ultra-high scaffolding loose formwork or customized flip formwork construction is adopted, the installation and disassembly of the formwork takes a long time, the hoisting operations are frequent, and the safety risks are high.

[0005] Therefore, it is necessary to develop an efficient and practical bidirectional hydraulic self-elevating climbing formwork device with special-shaped cross-section to cope with the simultaneous construction of the shaft and the elevator shaft to avoid the quality risks of the uncontrollable slump and initial setting time of the concrete, and reduce the time of formwork installation and disassembly. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a special-section bidirectional hydraulic self-elevating climbing formwork system and a climbing formwork method thereof, so as to improve the construction quality and efficiency of shafts and elevator shafts.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A bidirectional hydraulic self-elevating climbing formwork system with a special-shaped cross-section, comprising: a shaft climbing formwork, a transition climbing formwork, and an elevator climbing formwork, wherein the shaft climbing formwork and the elevator climbing formwork are detachably connected via the transition climbing formwork; the shaft climbing formwork comprises a shaft outer wall climbing formwork and a shaft inner wall climbing formwork, wherein the shaft inner wall climbing formwork and the elevator climbing formwork are detachably connected via the transition climbing formwork; The elevator climbing formwork comprises an elevator shaft inner wall climbing formwork and an elevator shaft outer wall formwork, and the elevator shaft inner wall climbing formwork and the elevator shaft outer wall formwork are detachably connected through a formwork hanging beam.

[0008] Preferably, the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork and elevator climbing formwork all include: a hydraulic climbing system and an operating platform, and the operating platform is detachably connected to the hydraulic climbing system; the hydraulic climbing system includes a climbing cone, a wall hanger, a guide rail, a reversing box and a lifting cylinder; the operating platform is clamped with the wall hanger, a maintenance platform is provided under the operating platform, a formwork bracket is provided above the operating platform, and the formwork bracket is detachably connected to a formwork on one side close to the wall hanger, and a pull rod is provided on the formwork.

[0009] Preferably, the shaft climbing formwork and transition climbing formwork also include a demoulding cylinder and a formwork support rod arranged between the formwork support and the formwork.

[0010] Preferably, there are 16 groups of the shaft outer wall climbing formworks in total, and the formworks of the 16 groups of shaft outer wall climbing formworks form a ring, and each group of shaft outer wall climbing formworks can crawl independently; there are 13 groups of the shaft inner wall climbing formworks in total, and the formworks of the 13 groups of shaft inner wall climbing formworks form an arc within the ring formed by the shaft outer wall climbing formworks; there are 2 groups of transition climbing formworks in total, and the 2 groups of transition climbing formworks are respectively arranged at the two ends of the arc formed by the shaft inner wall climbing formworks, and the elevator shaft outer wall formwork and the transition climbing formwork are detachably connected.

[0011] Preferably, the templates of the 13 groups of shaft inner wall climbing templates are connected by small inner wall templates.

[0012] Preferably, the template of the elevator shaft exterior wall template and the template of the transition climbing template are connected through the first small internal corner template.

[0013] Preferably, there are 4 groups of elevator shaft inner wall climbing formworks in total, the formworks of the 4 groups of elevator shaft inner wall climbing formworks form a rectangle, and the formworks of the 4 groups of elevator shaft inner wall climbing formworks are connected by a second small inner corner formwork.

[0014] Preferably, the elevator shaft exterior wall formwork includes a formwork and a back rib, and there are 3 groups of elevator shaft exterior wall formworks in total. The formworks of the 3 groups of elevator shaft exterior wall formworks form a rectangle with a notch on one side, and the rectangular notch formed by the formworks of the 3 groups of elevator shaft exterior wall formworks are inserted between 2 groups of transition climbing formworks, and the formworks of the 3 groups of elevator shaft exterior wall formworks are connected to the transition climbing formwork through the first small inner corner formwork.

[0015] Another aspect of the present invention is to provide a climbing formwork method of a special-section bidirectional hydraulic self-elevating climbing formwork system, comprising the following steps: Step 1: pouring of the Nth structural construction section; Step 1.1, install the formwork; embed the climbing cones according to the climbing formwork drawings, install 16 sets of shaft outer wall climbing formwork and 13 sets of shaft inner wall climbing formwork respectively, and the shaft inner wall climbing formwork formwork is connected through the inner wall small formwork; install 2 sets of transition climbing formwork formwork, connect the elevator shaft outer wall formwork formwork through the first inner corner small formwork, and install the corresponding back rib; install 4 sets of elevator shaft inner wall climbing formwork formwork and back rib, and the elevator shaft inner wall climbing formwork formwork is connected through the second inner corner small formwork; install the corresponding tie rods and diagonal braces; Step 1.2, concrete pouring and curing; Step 1.3, remove the formwork; after the concrete strength is greater than 10Mpa, remove the formwork, tie rods and diagonal braces; Step 2: Install the hydraulic climbing system and operating platform; Step 2.1, install the operating platform frame; install the wall hanging parts on the poured concrete in step 1, hang the assembled shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator climbing formwork operating platform frame on the load-bearing pins of the wall-mounted device and insert the safety pins, install the upper and lower reversing boxes at the bottom of the operating platform frame, and install the lifting cylinder between the upper and lower reversing boxes; Step 2.2, install the formwork bracket and formwork; hoist and install the assembled shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, and elevator climbing formwork bracket on the operating platform frame, and install the formwork accordingly, wherein the demoulding cylinder and formwork support rod are installed between the shaft outer wall climbing formwork, shaft inner wall climbing formwork, and transition climbing formwork bracket and the formwork; Step 2.3, template closing; pre-embed climbing cones; install the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork and elevator shaft outer wall template closing, among which the shaft outer wall climbing formwork, shaft inner wall climbing formwork and transition climbing formwork template are closed by demoulding cylinders and then the template support rods are installed, the elevator shaft inner wall climbing formwork and the elevator shaft outer wall template are closed by electric hoists, and the pull rods and back ribs are installed accordingly; Step 2.4, pouring and curing of N+1 structural construction section; Step 2.5, demoulding the formwork; after the concrete strength is greater than 10Mpa, remove the tie rods, formwork support rods and back ribs, and install the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork and elevator shaft outer wall formwork. The formwork of the shaft outer wall climbing formwork, shaft inner wall climbing formwork and transition climbing formwork is demoulded by a demoulding cylinder, and the elevator shaft inner wall climbing formwork and elevator shaft outer wall formwork are demoulded by an electric hoist or manually; Step 3, install the guide rails; the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork guide rails; insert the guide rails into the wall hanging parts of the Nth section structure, enter the crossbeam hook, and then enter the upper and lower reversing boxes and the operating platform frame support seat. When the upper end of the guide rail is 500mm lower than the climbing cone of the N+1th section structure, stop inserting the guide rail downward. Before installing the elevator shaft inner wall climbing formwork guide rails, the formwork hanging beams need to be removed. After installing the climbing guide rails, install the formwork hanging beams; Step 4: Hydraulic climbing; Step 4.1, guide rail climbing; install the wall hanging parts on the concrete poured in step 2, loosen the tail support of the guide rail, adjust the direction of the pawl of the reversing box, lift the guide rail by the lifting cylinder, and the guide rail climbs one hydraulic stroke at a time. When the guide rail climbs to the right position, hang the guide rail on the concrete wall hanging parts poured in step 2, connect them firmly with the connecting module and fix the tail support of the guide rail, remove the vacant wall hanging parts and climbing cones for turnover; Step 4.2, the operating platform climbs; before the operating platform climbs, pull out the safety pin, adjust the direction of the pawl of the reversing box, lift the template and the operating platform frame through the lifting cylinder, and the operating platform climbs along the guide rail. After the operating platform climbs to the right position, insert the load-bearing pin, hang the operating platform on the load-bearing pin, and insert the safety pin to fix the operating platform, adjust the upper pawl of the upper reversing box to pop out to face the concrete surface, and the lower pawl of the lower reversing box to pop out to face the concrete surface; after the operating platform climbs to the right position, install the maintenance platform under the operating platform; Step 5, repeat climbing pouring; repeat steps 2.3-2.5, step 4; Step 6: Dismantle all equipment after construction is completed.

[0016] The invention discloses a bidirectional hydraulic self-elevating climbing formwork system with a special-shaped cross-section and a climbing formwork method thereof, which have the following beneficial effects.

[0017] Compared with the construction of large-volume concrete structures with special cross-sections such as ultra-deep (high) shafts, the conventional construction plans are sliding formwork, ultra-high scaffolding loose formwork or customized flip formwork. The method of using special-section bidirectional hydraulic self-lifting climbing formwork is adopted to facilitate the slump control of concrete pouring. The formwork can be lifted only after the concrete reaches the strength requirements. The safety factor of formwork lifting is improved as a whole, and the requirements for precision control of concrete strength and formwork lifting time are reduced. Hanging an operating platform on the self-climbing formwork can avoid the erection of ultra-high racks, reduce the number of lifting machinery, greatly improve construction efficiency, and have good economic benefits. Each set of climbing formworks on the inner and outer walls can crawl independently, which can ensure safety and stability during construction, reduce the possibility of construction accidents, and have a high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic plan view of the bidirectional hydraulic self-elevating climbing formwork of the special-shaped cross-section of the present invention.

[0019] Figure 2 It is a schematic cross-sectional diagram of the wellbore climbing formwork of the present invention.

[0020] Figure 3 It is a schematic cross-sectional diagram of the elevator shaft climbing formwork of the present invention.

[0021] Figure 4 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 5 The present invention is a flow chart of a climbing formwork method of a bidirectional hydraulic self-elevating climbing formwork system of a special-shaped cross-section.

[0023] In the attached drawings: 1. Shaft climbing formwork; 11. Shaft outer wall climbing formwork; 12. Shaft inner wall climbing formwork; 121. Small inner wall formwork; 2. Transition climbing formwork; 21. First inner corner small formwork; 3. Elevator climbing formwork; 31. Elevator shaft inner wall climbing formwork; 311. Second inner corner small formwork; 32. Elevator shaft outer wall formwork; 321. Back rib; 33. Formwork hanging beam; 4. Hydraulic climbing system; 41. Climbing cone; 42. Wall hanger; 43. Guide rail; 44. Reversing box; 45. Lifting cylinder; 5. Operating platform; 6. Maintenance platform; 7. Formwork bracket; 71. Demoulding cylinder; 72. Formwork support rod; 8. Formwork; 81. Pull rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example 1

[0026] Reference Figure 1-4 A bidirectional hydraulic self-elevating climbing formwork system with a special-shaped cross-section includes a shaft climbing formwork 1, a transition climbing formwork 2, and an elevator climbing formwork 3. The shaft climbing formwork 1 and the elevator climbing formwork 3 are detachably connected through the transition climbing formwork 2; the shaft climbing formwork 1 includes a shaft outer wall climbing formwork 11 and a shaft inner wall climbing formwork 12. The shaft inner wall climbing formwork 12 and the elevator climbing formwork 3 are detachably connected through the transition climbing formwork 2; like Figure 3 and Figure 4As shown, the elevator climbing formwork 3 includes an elevator shaft inner wall climbing formwork 31 and an elevator shaft outer wall formwork 32. The elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32 are detachably connected via a formwork hanging beam 33. The elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32 are connected into a whole by the formwork hanging beam 33, and a set of climbing mechanism is used together. Climbing formwork construction can still be carried out when there is insufficient space to set up the climbing mechanism locally, thereby giving full play to the advantages of climbing formwork construction, greatly improving construction efficiency and reducing safety risks.

[0027] like Figure 1-3 As shown, the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12, the transition climbing formwork 2, and the elevator climbing formwork 3 all include: a hydraulic climbing system 4, an operating platform 5, and the operating platform 5 is detachably connected to the hydraulic climbing system 4; the hydraulic climbing system 4 includes a climbing cone 41, a wall hanger 42, a guide rail 43, a reversing box 44, and a lifting cylinder 45; the operating platform 5 is clamped with the wall hanger 42, a maintenance platform 6 is provided below the operating platform 5, and a formwork bracket 7 is provided above the operating platform 5, and the formwork bracket 7 is detachably connected to a formwork 8 on the side close to the wall hanger 42, and a pull rod 81 is provided on the formwork 8.

[0028] The shaft climbing formwork 1 and the transition climbing formwork 2 also include a demoulding cylinder 71 and a formwork support rod 72 arranged between the formwork support 7 and the formwork 8.

[0029] like Figure 1As shown, there are 16 groups of shaft outer wall climbing formworks 11, and the formworks 8 of the 16 groups of shaft outer wall climbing formworks 11 form a ring, and each group of shaft outer wall climbing formworks 11 can crawl independently; there are 13 groups of shaft inner wall climbing formworks 12, and the formworks 8 of the 13 groups of shaft inner wall climbing formworks 12 form an arc within the ring formed by the shaft outer wall climbing formworks 11; there are 2 groups of transition climbing formworks 2, and the 2 groups of transition climbing formworks 2 are respectively arranged at the two ends of the arc formed by the shaft inner wall climbing formworks 12, and the elevator shaft outer wall formwork 32 is detachably connected to the transition climbing formwork 2. The templates 8 of the 13 groups of shaft inner wall climbing formworks 12 are connected by small inner wall templates 121. The reason for using the small inner wall templates 121 for connection is to reserve enough space for demolding and shrinking of the templates 8 of the shaft inner wall climbing formworks 12. There are 4 groups of elevator shaft inner wall climbing formworks 31. The templates 8 of the 4 groups of elevator shaft inner wall climbing formworks 31 form a rectangle. The templates 8 of the 4 groups of elevator shaft inner wall climbing formworks 31 are connected by the second inner corner small templates 311. It is worth noting that each group of climbing formworks in the shaft outer wall climbing formworks 11, the shaft inner wall climbing formworks 12, the transition climbing formworks 2, and the elevator climbing formworks 3 can be controlled to climb individually or as a whole. That is to say, the 16 groups of shaft outer wall climbing formworks 11, the 13 groups of shaft inner wall climbing formworks 12, the 2 groups of transition climbing formworks 2, and the 4 groups of elevator shaft inner wall climbing formworks 31 can be controlled to climb individually or as a whole. The climbing formwork support frame is fixed on the hardened concrete wall at the bottom, and the structure will not be deformed. After the concrete reaches the strength requirement, it will be demolded and climbed. Each set of climbing formwork on the inner and outer walls can crawl independently, which can ensure the safety and stability during the construction process, reduce the possibility of construction accidents, and has a high safety factor.

[0030] The template 8 of the elevator shaft outer wall template 32 is connected to the template 8 of the transition climbing template 2 through the first inner corner small template 21. Preferably, a platform is provided on the outer side of the template 8 corresponding to the gap surrounded by the template 8 of the elevator shaft outer wall template 32.

[0031] It should be noted that the first small internal corner template 21 is designed to adapt to the special-shaped cross-section. When the first small internal corner template 21 is removed, the template 8 of the transition climbing template 2 can be demolded using the demolding cylinder 71, and the template 8 of the elevator shaft exterior wall template 32 can be demolded by the electric hoist on the template hanging beam 33 or manually.

[0032] The elevator shaft exterior wall formwork 32 includes a formwork 8 and a back rib 321. There are 3 groups of elevator shaft exterior wall formworks 32. The formworks 8 of the 3 groups of elevator shaft exterior wall formworks 32 form a rectangle with a notch on one side. The rectangular notch formed by the formworks 8 of the 3 groups of elevator shaft exterior wall formworks 32 is inserted between 2 groups of transition climbing formworks 2. The formworks 8 of the 3 groups of elevator shaft exterior wall formworks 32 are connected to the transition climbing formworks 2 through the first inner corner small formwork 21. Example 2

[0033] Based on Example 1, please refer to Figure 5This embodiment provides a climbing formwork method of a special-shaped cross-section bidirectional hydraulic self-elevating climbing formwork system, comprising the following steps: Step 1: pouring of the Nth structural construction section; Step 1.1, install the formwork 8; embed the climbing cone 41 according to the climbing formwork drawing, install 16 groups of formworks 8 of the shaft outer wall climbing formworks 11 and 13 groups of formworks 8 of the shaft inner wall climbing formworks 12 respectively, and the formworks 8 of the shaft inner wall climbing formworks 12 are connected through the small inner wall formworks 121; install 2 groups of formworks 8 of transition climbing formworks 2, and connect the formworks 8 of the elevator shaft outer wall formworks 32 through the first inner corner small formworks 21 respectively, and install the back ribs 321 accordingly; install 4 groups of formworks 8 and back ribs 321 of the elevator shaft inner wall climbing formworks 31, and the formworks 8 of the elevator shaft inner wall climbing formworks 31 are connected through the second inner corner small formworks 311; install pull rods 81 and diagonal braces accordingly; it is worth noting that the diagonal braces are used only when the Nth section structure is cast, and the subsequent structure casting does not use the diagonal braces.

[0034] Step 1.2, concrete pouring and curing; Step 1.3, remove the formwork 8; after the concrete strength is greater than 10Mpa, remove the formwork 8, tie rod 81 and diagonal brace; it is worth noting that the climbing formwork construction is convenient for controlling the slump of concrete pouring. After the concrete pouring is completed, the concrete test block compressive strength test method, rebound method, ultrasonic emission and other testing methods can be used according to the actual situation on site. The formwork can be lifted only after the tested structure meets the strength requirements. The requirements for the precision control of the concrete strength and the formwork lifting time are reduced, and the overall safety factor of the formwork lifting is improved. There is sufficient time for manual vibration during the construction process, which is conducive to quality process control.

[0035] Step 2: Install the hydraulic climbing system 4 and the operating platform 5; Step 2.1, install the operating platform 5 frame; install the wall hanging parts 42 on the poured concrete in step 1, hang the assembled shaft outer wall climbing formwork 11, shaft inner wall climbing formwork 12, transition climbing formwork 2, elevator climbing formwork 3 operating platform 5 frame on the load-bearing pins of the wall-mounted device and insert the safety pins, install the upper and lower reversing boxes 44 at the bottom of the operating platform 5 frame, and install the lifting cylinder 45 between the upper and lower reversing boxes 44; Step 2.2, install the formwork support 7 and the formwork 8; hoist and install the assembled shaft outer wall climbing formwork 11, shaft inner wall climbing formwork 12, transition climbing formwork 2, and elevator climbing formwork 3 formwork support 7 on the operating platform 5 frame, and install the formwork 8 accordingly, wherein the demoulding cylinder 71 and the formwork support rod 72 are installed between the shaft outer wall climbing formwork 11, shaft inner wall climbing formwork 12 and transition climbing formwork 2 formwork support 7 and the formwork 8; Step 2.3, close the formwork 8; embed the climbing cone 41; install the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12, the transition climbing formwork 2, the elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32, wherein the formwork 8 of the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12 and the transition climbing formwork 2 formwork is closed by the demoulding cylinder 71 and then the formwork support rod 72 is installed, the elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32 are closed by the electric hoist, and the pull rod 81 and the back rib 321 are installed accordingly; Step 2.4, pouring and curing of N+1 structural construction section; Step 2.5, demoulding the formwork 8; after the concrete strength is greater than 10Mpa, remove the tie rod 81, the formwork support rod 72 and the back rib 321, and install the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12, the transition climbing formwork 2, the elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32 to demould the formwork 8, wherein the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12 and the transition climbing formwork 2 formwork formwork 8 are demoulded by the demoulding cylinder 71, and the elevator shaft inner wall climbing formwork 31 and the elevator shaft outer wall formwork 32 are demoulded by an electric hoist or manually; Step 3, install the guide rail 43; the shaft outer wall climbing formwork 11, the shaft inner wall climbing formwork 12, the transition climbing formwork 2, the elevator shaft inner wall climbing formwork 31 guide rail 43; insert the guide rail 43 into the wall hanging bracket 42 of the Nth section structure, enter the crossbeam hook, and then enter the upper and lower reversing boxes 44 and the operating platform 5 frame support seat. When the upper end of the guide rail 43 is lower than the climbing cone 41500mm of the N+1th section structure, stop inserting the guide rail 43 downward. Before installing the elevator shaft inner wall climbing formwork 31 guide rail 43, the formwork hanging beam 33 needs to be removed. After installing the climbing guide rail 43, install the formwork hanging beam 33; Step 4: Hydraulic climbing; Step 4.1, guide rail 43 climbs; in step 2, the wall hanging 42 is installed on the concrete poured, the tail support of the guide rail 43 is loosened, the pawl direction of the reversing box 44 is adjusted, and the guide rail 43 is lifted by the lifting cylinder 45. The guide rail 43 climbs one hydraulic stroke at a time. When the guide rail 43 climbs to the right position, the guide rail 43 is hung on the concrete wall hanging 42 poured in step 2, and the connecting module is used to connect and fix the tail support of the guide rail 43, and the vacant wall hanging 42 and climbing cone 41 are removed for turnover; Step 4.2, the operating platform 5 climbs; before the operating platform 5 climbs, pull out the safety pin, adjust the direction of the pawl of the reversing box 44, lift the template 8 and the operating platform 5 frame by the lifting cylinder 45, and the operating platform 5 climbs along the guide rail 43. After the operating platform 5 climbs to the right position, insert the load-bearing pin, hang the operating platform 5 on the load-bearing pin, insert the safety pin, fix the operating platform 5, adjust the upper pawl of the upper reversing box 44 to pop out to face the concrete surface, and the lower pawl of the lower reversing box 44 to pop out to face the concrete surface; install the maintenance platform 6 under the operating platform 5.

[0036] Step 5, repeat climbing pouring; repeat steps 2.3-2.5, step 4; Step 6: Dismantle all equipment after construction is completed.

[0037] It is worth noting that the climbing formwork construction relies on its own hydraulic system to climb, and does not require other lifting equipment. The formwork can be opened and closed freely, is easy to operate, has a fast climbing speed, a small amount of disassembly and assembly workload, and low labor intensity, thereby speeding up the construction speed. Hanging the operating platform 5 on the self-climbing formwork can avoid the need to set up external scaffolding, reduce the number of lifting machinery, and speed up the construction speed, so the economic benefits are better.

[0038] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The substitution may be a substitution of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section, characterized in that: include: A shaft climbing formwork, a transition climbing formwork, and an elevator climbing formwork, wherein the shaft climbing formwork and the elevator climbing formwork are detachably connected via a transition climbing formwork; the shaft climbing formwork comprises a shaft outer wall climbing formwork and a shaft inner wall climbing formwork, wherein the shaft inner wall climbing formwork and the elevator climbing formwork are detachably connected via a transition climbing formwork; The elevator climbing formwork comprises an elevator shaft inner wall climbing formwork and an elevator shaft outer wall formwork, and the elevator shaft inner wall climbing formwork and the elevator shaft outer wall formwork are detachably connected through a formwork hanging beam.

2. The bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section according to claim 1 is characterized in that: The shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork and elevator climbing formwork all include: a hydraulic climbing system and an operating platform, and the operating platform is detachably connected to the hydraulic climbing system; the hydraulic climbing system includes a climbing cone, a wall hanger, a guide rail, a reversing box, and a lifting cylinder; the operating platform is clamped with the wall hanger, a maintenance platform is provided under the operating platform, a formwork bracket is provided above the operating platform, and the formwork bracket is detachably connected to a formwork on one side close to the wall hanger, and a pull rod is provided on the formwork.

3. A bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section according to claim 2, characterized in that: The shaft climbing formwork and transition climbing formwork also include a demoulding cylinder and a formwork support rod arranged between the formwork support and the formwork.

4. The bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section according to claim 2 is characterized in that: There are 16 groups of the shaft outer wall climbing formworks in total, and the formworks of the 16 groups of shaft outer wall climbing formworks form a ring, and each group of shaft outer wall climbing formworks can crawl independently; there are 13 groups of the shaft inner wall climbing formworks in total, and the formworks of the 13 groups of shaft inner wall climbing formworks form an arc within the ring formed by the shaft outer wall climbing formworks; there are 2 groups of transition climbing formworks in total, and the 2 groups of transition climbing formworks are respectively arranged at the two ends of the arc formed by the shaft inner wall climbing formworks, and the elevator shaft outer wall formwork and the transition climbing formwork are detachably connected.

5. The bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section according to claim 4 is characterized in that: The 13 groups of shaft inner wall climbing formworks are connected by small inner wall formworks.

6. The special-section bidirectional hydraulic self-elevating climbing formwork system according to claim 1, characterized in that: The template of the elevator shaft outer wall template and the template of the transition climbing template are connected through the first internal corner small template.

7. The special-section bidirectional hydraulic self-elevating climbing formwork system according to claim 4, characterized in that: There are 4 groups of elevator shaft inner wall climbing formworks in total, the templates of the 4 groups of elevator shaft inner wall climbing formworks form a rectangle, and the templates of the 4 groups of elevator shaft inner wall climbing formworks are connected by a second small inner corner template.

8. The bidirectional hydraulic self-elevating climbing formwork system with special-shaped cross-section according to claim 1 is characterized in that: The elevator shaft exterior wall formwork includes a formwork and a back rib. There are 3 groups of elevator shaft exterior wall formworks in total. The formworks of the 3 groups of elevator shaft exterior wall formworks form a rectangle with a notch on one side. The rectangular notch formed by the formworks of the 3 groups of elevator shaft exterior wall formworks is inserted between 2 groups of transition climbing formworks. The formworks of the 3 groups of elevator shaft exterior wall formworks are connected to the transition climbing formworks through the first small inner corner formwork.

9. A climbing formwork method of a special-shaped cross-section bidirectional hydraulic self-elevating climbing formwork system, using the special-shaped cross-section bidirectional hydraulic self-elevating climbing formwork system according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: pouring of the Nth structural construction section; Step 1.1, install the formwork; embed the climbing cones according to the climbing formwork drawings, install 16 sets of shaft outer wall climbing formwork and 13 sets of shaft inner wall climbing formwork respectively, and the shaft inner wall climbing formwork formwork is connected through the inner wall small formwork; install 2 sets of transition climbing formwork formwork, connect the elevator shaft outer wall formwork formwork through the first inner corner small formwork, and install the corresponding back rib; install 4 sets of elevator shaft inner wall climbing formwork formwork and back rib, and the elevator shaft inner wall climbing formwork formwork is connected through the second inner corner small formwork; install the corresponding tie rods and diagonal braces; Step 1.2, concrete pouring and curing; Step 1.3, remove the formwork; after the concrete strength is greater than 10Mpa, remove the formwork, tie rods and diagonal braces; Step 2: Install the hydraulic climbing system and operating platform; Step 2.1, install the operating platform frame; install the wall hanging parts on the poured concrete in step 1, hang the assembled shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator climbing formwork operating platform frame on the load-bearing pins of the wall-mounted device and insert the safety pins, install the upper and lower reversing boxes at the bottom of the operating platform frame, and install the lifting cylinder between the upper and lower reversing boxes; Step 2.2, install the formwork bracket and formwork; hoist and install the assembled shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, and elevator climbing formwork bracket on the operating platform frame, and install the formwork accordingly, wherein the demoulding cylinder and formwork support rod are installed between the shaft outer wall climbing formwork, shaft inner wall climbing formwork, and transition climbing formwork bracket and the formwork; Step 2.3, template closing; pre-embed climbing cones; install the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork and elevator shaft outer wall template closing, among which the shaft outer wall climbing formwork, shaft inner wall climbing formwork and transition climbing formwork template are closed by demoulding cylinders and then the template support rods are installed, the elevator shaft inner wall climbing formwork and the elevator shaft outer wall template are closed by electric hoists, and the pull rods and back ribs are installed accordingly; Step 2.4, pouring and curing of N+1 structural construction section; Step 2.5, demoulding the formwork; after the concrete strength is greater than 10Mpa, remove the tie rods, formwork support rods and back ribs, and install the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork and elevator shaft outer wall formwork. The formwork of the shaft outer wall climbing formwork, shaft inner wall climbing formwork and transition climbing formwork is demoulded by a demoulding cylinder, and the elevator shaft inner wall climbing formwork and elevator shaft outer wall formwork are demoulded by an electric hoist or manually; Step 3, install the guide rails; the shaft outer wall climbing formwork, shaft inner wall climbing formwork, transition climbing formwork, elevator shaft inner wall climbing formwork guide rails; insert the guide rails into the wall hanging parts of the Nth section structure, enter the crossbeam hook, and then enter the upper and lower reversing boxes and the operating platform frame support seat. When the upper end of the guide rail is 500mm lower than the climbing cone of the N+1th section structure, stop inserting the guide rail downward. Before installing the elevator shaft inner wall climbing formwork guide rails, the formwork hanging beams need to be removed. After installing the climbing guide rails, install the formwork hanging beams; Step 4: Hydraulic climbing; Step 4.1, guide rail climbing; install the wall hanging parts on the concrete poured in step 2, loosen the tail support of the guide rail, adjust the direction of the pawl of the reversing box, lift the guide rail by the lifting cylinder, and the guide rail climbs one hydraulic stroke at a time. When the guide rail climbs to the right position, hang the guide rail on the concrete wall hanging parts poured in step 2, connect them firmly with the connecting module and fix the tail support of the guide rail, remove the vacant wall hanging parts and climbing cones for turnover; Step 4.2, the operating platform climbs; before the operating platform climbs, pull out the safety pin, adjust the direction of the pawl of the reversing box, lift the template and the operating platform frame through the lifting cylinder, and the operating platform climbs along the guide rail. After the operating platform climbs to the right position, insert the load-bearing pin, hang the operating platform on the load-bearing pin, and insert the safety pin to fix the operating platform, adjust the upper pawl of the upper reversing box to pop out to face the concrete surface, and the lower pawl of the lower reversing box to pop out to face the concrete surface; after the operating platform climbs to the right position, install the maintenance platform under the operating platform; Step 5, repeat climbing pouring; repeat steps 2.3-2.5, step 4; Step 6: Dismantle all equipment after construction is completed.

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