A single-side formwork lifting formwork for ultra-deep vertical shaft lining and construction method

Abstract

The present invention discloses a single-side formwork lifting formwork for lining of an ultra-deep shaft, comprising a pre-embedded support system, a lifting formwork main beam, a support frame and a bottom walking platform, and the construction method is as follows: after the first layer of steel bars are tied, the next layer of support embedded parts are pre-embedded, and the lifting formwork is installed on the shaft bottom plate simultaneously; then the formwork is installed and the steel pipe support is connected to the lifting formwork to form a formwork reinforcement system; concrete is poured and maintained, and during the maintenance period, the next layer of steel bars can be tied using the top platform of the lifting formwork; after the maintenance is completed, the steel pipe support is removed, the mold is demoulded and the support system is installed; finally, the lifting formwork is hoisted and lifted as a whole to the main beam by a hoisting device and placed on the pre-embedded support system, that is, the next layer of formwork and pouring work is carried out. The present invention has a simple structure, the pre-embedded support system can be installed and tested in advance, the construction method is simple to operate, and the project period can be effectively shortened. Each process is reasonably interspersed, there is no cross operation between the upper and lower layers, and the safety risk is small.

Description

Technical Field

[0001] The invention relates to the technical field of shaft lining construction, in particular to a single-side formwork lifting formwork frame for ultra-deep shaft lining construction and a construction method. Background Art

[0002] With the needs of social development and the advancement of construction technology, ultra-deep shafts are increasing. In the single-sided formwork construction of the shaft lining, the full-floor scaffolding method is used for construction. The workload of erecting and dismantling the frame is large, and there are cross-operations up and down, resulting in low construction efficiency, long cycle and high investment. The depth of the shaft is usually only a few dozen meters, and the use of tool formwork such as climbing formwork and sliding formwork for construction faces problems such as large construction investment, poor economy, long time for formwork installation, debugging and dismantling, and poor flexibility. Summary of the invention

[0003] In order to overcome the technical defects of the prior art such as large investment in shaft lining construction, long time for template installation and removal, and poor safety performance, the present invention provides a single-side formwork lifting formwork for ultra-deep shaft lining, which is installed and tested in advance using a pre-embedded support system, is safe and reliable, and each process can be reasonably interspersed without cross-operation between upper and lower layers, thereby shortening the construction period and solving the above-mentioned technical problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical scheme, which is a single-side formwork lifting formwork for lining of ultra-deep vertical shaft, and the lifting formwork includes a pre-embedded support system, a lifting formwork main beam, a support frame body and a bottom walking platform.

[0005] The left and right ends of the lifting formwork main beam are provided with flipping devices, which can flip automatically through the pre-installed embedded support system. The pre-embedded support system is embedded in the cast lining in advance. The support frame is arranged at the upper end of the lifting formwork main beam, and its height is determined according to the construction layer height. A vertical support beam is arranged on it, and a steel pipe support is installed in the middle position between the vertical support beam and the lining to be cast. A formwork system is arranged at the junction of the outermost side of the steel pipe support and the lining to be cast, so as to provide support reaction force for the pouring of concrete of the lining structure.

[0006] The bottom walking platform is arranged on the left and right sides of the main beam of the lifting formwork, including a main platform, a flipping platform and a limit device. The main platform and the flipping platform are hinged together by a hinge shaft. The flipping platform can be flipped along the hinge position. A limit device is arranged at the end of the hinge position between the main platform and the flipping platform to ensure that the flipping platform can be flipped within the range of 0-180°.

[0007] The above-mentioned ultra-deep vertical shaft lining single-side formwork lifting formwork, the flip platform is flipped outward along the hinge position of the main platform and the flip platform during the lining working condition to fit tightly with the poured lining, supporting the deadweight of the formwork system and forming a closed platform; during the lifting working condition, it is flipped inward to form a gap between the poured lining.

[0008] When the lifting formwork of the present invention is used, the construction of the single-side formwork for the vertical shaft lining is mainly completed through the following steps:

[0009] S1: Tie the first layer of steel bars at the bottom, embed the next layer of embedded support system at the top, and simultaneously install the lifting formwork on the shaft bottom plate;

[0010] S2: Set the bottom walking platform to the lining working condition, flip the platform outward to fit closely with the poured lining, support the deadweight of the formwork system and form a closed platform, provide space for personnel operation and passage, and the operator stands on the main platform of the bottom walking platform to install the formwork system and connect the steel pipe support with the lifting formwork frame to form a formwork reinforcement system;

[0011] S3: pour concrete and maintain. During the maintenance period, scaffolding boards are set up on the top platform of the lifting formwork and the top of the poured lining to tie the next layer of lining steel bars to be poured;

[0012] S4: After the maintenance is completed, the operator stands on the bottom walking platform to remove the short steel pipe support and formwork system and install the next layer of embedded support system;

[0013] S5: Set the bottom walking platform to the hoisting working condition, flip the flip platform inward to form a certain gap between it and the poured lining, and use hoisting equipment to hoist the lifting formwork as a whole. During the lifting process, when the main beam of the lifting formwork hits the installed embedded support system, it can flip itself. After passing through, the main beam of the lifting formwork is placed on the embedded support system to carry out the formwork and pouring of the next layer of lining to be poured.

[0014] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0015] 1. The present invention discloses a single-side formwork lifting formwork for lining of an ultra-deep shaft, which has a simple structure, a wide range of applications, is easy to manufacture and manufacture, and has a low cost. The embedded support system can be installed and tested in advance, is safe and reliable, and the bottom walking platform can provide a good working environment for workers.

[0016] 2. The construction method described in the present invention is simple to operate, can effectively shorten the construction period, and each process can be reasonably interspersed without cross-operation between upper and lower layers, and has low safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 It is a schematic diagram of the overall structure of a single-side formwork lifting formwork for lining of an ultra-deep vertical shaft according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the bottom walking platform of the present invention;

[0020] Figure 3 It is a schematic diagram of the present invention used in a pouring working condition;

[0021] Figure 4 It is a schematic diagram of the hoisting working condition of the present invention;

[0022] In the figure: 1-cast lining, 2-lining to be cast, 3-embedded support system, 4-lifting formwork main beam, 5-support frame, 6-bottom walking platform, 7-steel pipe support, 8-formwork system, 601-main platform, 602-turning platform, 603-limiting device. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, it is a schematic diagram of the overall structure of a single-side formwork lifting formwork for ultra-deep vertical shaft lining construction, and the lifting formwork includes a pre-embedded support system 3, a lifting formwork main beam 4, a support frame body 5 and a bottom walking platform 6.

[0024] The left and right ends of the lifting formwork main beam 4 are provided with a flipping device, which can flip itself through the pre-installed embedded support system 3. The embedded support system 3 is pre-embedded in the cast lining 1 in advance. The support frame 5 is arranged at the upper end of the lifting formwork main beam 4, and its height is determined according to the construction layer height. A vertical support beam is arranged on it, and a steel pipe support 7 is installed in the middle position between the vertical support beam and the lining 2 to be cast. The outermost side of the steel pipe support 7 and the combination position of the lining 2 to be cast are provided with a formwork system 8 to provide support reaction force for the pouring of concrete of the lining structure.

[0025] The bottom walking platform 6 is arranged on the left and right sides of the lifting formwork main beam 4, and includes a main platform 601, a flip platform 602 and a limit device 603. The main platform 601 and the flip platform 602 are hinged together through a hinge shaft, and the flip platform 602 can be flipped along the hinge position. The end of the hinge position of the main platform 601 and the flip platform 602 is provided with a limit device 603 to ensure that the flip platform 602 is flipped within the range of 0-180 degrees. The structure of the bottom walking platform 6 is as follows Figure 2 shown.

[0026] When the flip platform 602 is in the lining working condition, it flips outward along the hinge position of the main platform 601 and the flip platform 602 to fit closely with the poured lining 1, and the supporting formwork system 8 relies on its own weight to form a closed platform. Figure 3 Shown is a schematic diagram of the present invention used in a pouring condition.

[0027] When the flip platform 602 is in the hoisting condition, it flips inward along the hinge position of the main platform 601 and the flip platform 602 to form a certain gap with the cast lining 1, and the lifting formwork is hoisted and lifted as a whole by the lifting equipment. During the lifting process, when the main beam 4 of the lifting formwork hits the installed embedded support system 3, it can flip itself. Figure 4 As shown, it is a schematic diagram of the present invention under hoisting working conditions.

[0028] In the specific use process of the present invention, the construction of the single-side formwork of the vertical shaft lining is mainly completed through the following construction steps:

[0029] Step 1: Specially design the entire lifting formwork, and use finite element analysis software to verify. The support frame 5 adopts a truss structure. The height of the support frame 5 is determined according to the construction layer height. Vertical support beams are set to meet the requirements of any step distance of the template steel pipe support 7;

[0030] Step 2: Process the support frame 5, the lifting formwork main beam 4, the bottom walking platform 6 and the embedded support system 3 and other components in blocks or as a whole in a professional processing factory, and transport them to the site for assembly and testing;

[0031] Step 3: Tie the first layer of steel bars at the bottom, embed the next layer of embedded support system 3 at the top, and simultaneously install the lifting formwork on the shaft bottom plate;

[0032] Step 4: Set the bottom walking platform 6 to the lining working condition, flip the turning platform 602 outward to fit closely with the poured lining 1, support the self-weight of the formwork system 8 and form a closed platform to provide space for personnel operation and passage. The operator stands on the bottom walking platform 6 to install the formwork system 8 and connect the steel pipe support 7 with the lifting formwork to form a formwork reinforcement system;

[0033] Step 5: pour concrete and maintain. During the maintenance period, a scaffolding board is set up on the top platform of the lifting formwork and the top of the poured lining 1 to tie the steel bars of the next layer of lining 2 to be poured;

[0034] Step 6: After the maintenance is completed, the operator stands on the bottom walking platform 6 to remove the short steel pipe support 7 and the formwork system 8 and install the next layer of embedded support system 3;

[0035] Step seven: Set the bottom walking platform 6 to the hoisting working condition, flip the flip platform 602 inward to form a certain gap between it and the cast lining 1, and use the hoisting equipment to hoist the lifting formwork as a whole. During the lifting process, when the lifting formwork main beam 4 hits the installed embedded support system 3, it can flip itself. After passing through, the lifting formwork main beam 4 is placed on the embedded support system 3 to carry out the formwork and casting work of the next layer of lining 2 to be cast.

[0036] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single-side formwork lifting formwork for lining of an ultra-deep shaft, characterized in that: The lifting formwork comprises a pre-buried support system (3), a lifting formwork main beam (4), a support frame body (5) and a bottom walking platform (6); The left and right ends of the lifting formwork main beam (4) are provided with a turning device, which can turn itself over through the pre-installed embedded support system (3), the pre-embedded support system (3) is pre-embedded in the poured lining (1), the support frame (5) is arranged at the upper end of the lifting formwork main beam (4), and its height is determined according to the construction layer height, and a vertical support beam is arranged on it, and a steel pipe support (7) is installed in the middle position between the vertical support beam and the lining (2) to be poured, and a template system (8) is arranged at the outermost position of the steel pipe support (7) and the combination position of the lining (2) to be poured, so as to provide a supporting reaction force for the pouring of concrete of the lining structure; The bottom walking platform (6) is arranged on the left and right sides of the lifting formwork main beam (4), and comprises a main platform (601), a turning platform (602) and a limiting device (603). The main platform (601) and the turning platform (602) are hinged together through a hinge shaft, and the turning platform (602) can be turned along the hinge position. The limiting device (603) is arranged at the end of the hinge position between the main platform (601) and the turning platform (602) to ensure that the turning platform (602) can be turned within the range of 0-180 degrees.

2. The ultra-deep shaft lining single-side formwork lifting formwork according to claim 1 is characterized in that: During the lining operation, the flip platform (602) flips outwards along the hinged position between the main platform (601) and the flip platform (602) to fit tightly with the poured lining (1), supporting the deadweight of the formwork system (8) and forming a closed platform; during the hoisting operation, the flip platform flips inwards to form a gap between the poured lining (1).

3. A construction method for ultra-deep shaft lining with single-side formwork and lifting formwork as claimed in claim 1, characterized in that: The construction method includes the following construction steps: S1: Tie the first layer of steel bars at the bottom, embed the next layer of embedded support system (3) at the top, and simultaneously install the lifting formwork on the shaft bottom plate; S2: The bottom walking platform (6) is set to the lining working condition, the turning platform (602) is turned outward to fit closely with the poured lining (1), the self-weight of the formwork system (8) is supported and a closed platform is formed to provide space for personnel to operate and pass through. The operator stands on the main platform (601) of the bottom walking platform (6) to install the formwork system (8), and connects the steel pipe support (7) with the lifting formwork frame to form a formwork reinforcement system; S3: pouring concrete and curing. During the curing period, a scaffolding board is set up on the top platform of the lifting formwork and on the top of the poured lining (1) to tie the steel bars of the next layer of lining to be poured (2); S4: After the maintenance is completed, the operator stands on the bottom walking platform (6) to remove the steel pipe support (7), the formwork system (8) and install the next layer of embedded support system (3); S5: The bottom walking platform (6) is set to a hoisting condition, the turning platform (602) is turned inward to form a certain gap between the turned platform and the poured lining (1), and the lifting formwork is hoisted and lifted as a whole by using a hoisting device. During the lifting process, when the main beam (4) of the lifting formwork hits the installed embedded support system (3), it can turn over automatically. After passing through, the main beam (4) of the lifting formwork is placed on the embedded support system (3), and the next layer of the lining (2) to be poured is supported and poured.

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