Safety protection system for hollow pier

Abstract

The present application relates to the technical field of hollow pier construction, and provides a hollow pier safety protection system, which comprises an inner cavity anti-falling platform, a support base, an inner tire frame and an outer tire frame. The inner cavity anti-falling platform is arranged in the hollow pier and covers the hollow area inside the hollow pier, and is used for preventing the falling of workers when the inner mold is installed or dismounted. The support base is used for placing and fixing on the top surface of the hollow pier segment that has been poured. The inner tire frame is placed on the support base, and is used for facilitating the workers to carry out the steel bar binding operation in the hollow cavity of the hollow pier and to enter and exit. The outer tire frame is arranged outside the position of the hollow pier that has not been poured, and is arranged on the climbing formwork concrete pouring platform, and is used for facilitating the workers to carry out the external steel bar binding. The system can effectively reduce the risk of high-altitude falling when applied in the hollow pier construction.

Description

Technical Field

[0001] This invention relates to the field of hollow pier construction technology, and more specifically, to a hollow pier safety protection system. Background Technology

[0002] Falls from height during the construction of hollow piers have exposed systemic risks in the current high-altitude work safety system. The construction of these special structures has significant spatial limitations; their vertical passages and internal cavities create a unique "well effect," making it difficult for traditional safety measures to provide comprehensive coverage. This manifests in three aspects: First, there is a lack of uniformity in protection standards for multi-layered and cross-operation environments. The construction of hollow piers often involves multi-trade and multi-process multi-layered operations, but existing protection plans fail to establish graded protection standards for key risk points such as the inner cavity of the pier column and the top opening.

[0003] Secondly, there is insufficient continuity of protection during dynamic construction. As the pier rises, the erection of protective facilities lags behind, especially during the transition between key processes such as concrete pouring and formwork removal, which can easily lead to periods of protection gaps.

[0004] Third, emergency response is limited by confined space conditions. The narrow space inside the pier not only increases the probability of falls but also significantly increases the difficulty of rescue after an accident, and existing emergency plans lack specific measures. These types of accidents reflect the need for a shift in the concept of "planar protection" to "three-dimensional protection" in high-altitude work safety. In particular, for special structures such as hollow piers, a multi-dimensional protection system should be established.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The present invention aims to provide a safety protection system for hollow piers, which is intended to improve at least one of the problems mentioned in the background art.

[0007] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a hollow pier safety protection system, comprising an inner cavity anti-fall platform, a supporting base, an inner tube frame, and an outer tube frame; The internal cavity fall arrest platform is used to be installed inside the hollow pier and covers the hollow area inside the hollow pier. It is used to prevent workers from falling when installing or dismantling the inner formwork. The support base is used to place and fix it on the top surface of the poured section of the hollow pier. The inner frame is placed on the support base to facilitate the workers to tie the steel bars in the hollow pier cavity and to allow personnel to enter and exit. The outer frame is used to set up outside the uncast area of ​​the hollow pier and on the climbing formwork concrete pouring platform to facilitate the binding of external reinforcing bars by the workers.

[0008] In an optional implementation, each internal cavity fall arrest platform includes a planar truss structure main body constructed of angle steel and a flexible steel mesh laid on the truss structure main body.

[0009] In an optional implementation, the internal cavity anti-fall platform also includes multiple threaded steel bars connected to the main truss structure. The internal cavity anti-fall platform is fixed by connecting the threaded steel bars to the tie rod holes reserved during the construction of the hollow pier.

[0010] In an optional implementation, the supporting base consists of at least three square steel bars, each of which spans across the top surface of the already poured segment of the hollow pier during construction.

[0011] In an optional implementation, at least one of the following features (1) and (2) is included: (1) The inner tube frame is a truss formed by welding angle steel; (2) A first vertical ladder is provided on the inner tube frame.

[0012] In an optional embodiment, the top and bottom of the inner tube frame are covered with anti-slip steel plates, and a first safety door is opened at the top of the inner tube frame corresponding to the vertical ladder.

[0013] In an optional implementation, the outer tire frame is formed by splicing two U-shaped safety frames.

[0014] In an optional embodiment, a second vertical ladder is provided inside the outer tire frame; Optionally, the outer tire frame has two working platforms, each of which is formed by laying anti-slip steel plates; Optionally, a second safety door is provided at the location of the second vertical ladder on the work platform.

[0015] Secondly, the present invention provides a method for constructing hollow piers, comprising: On the basis of a section that has already been poured on the pier cap, at least one hollow pier segment construction shall be carried out; The construction methods for each hollow pier segment include: The installation of the internal cavity fall protection platform is achieved by connecting the threaded steel of the internal cavity fall protection platform to the pre-reserved tie rod hole at the top of the already poured section of the hollow pier. Above the internal cavity anti-fall platform, a support base covering the hollow part is set on the end face of the already poured segment of the hollow pier; Place the inner tube frame on the supporting base; Workers used an inner tube frame to tie the inner steel bars; Place the outer frame on the climbing formwork concrete pouring platform; Workers used an external frame to tie the outer steel bars; Remove the inner mold frame and install the inner mold on the inside of the hollow pier. As the installation position of the inner mold rises, the inner cavity anti-fall platform moves upward. Finally, move the inner cavity anti-fall platform above the inner mold and lay square steel across the inner cavity of the hollow pier on the inner mold to provide support for the inner cavity anti-fall platform. At this time, the inner cavity anti-fall platform serves as a concrete pouring operation platform. Remove the outer frame and install the outer mold on the outside of the hollow pier; Concrete is poured, and after the concrete strength meets the requirements, the inner and outer molds are removed. During the removal of the inner mold, the inner cavity anti-fall platform moves with the height as the removal height changes.

[0016] In an optional implementation, the construction of each hollow pier segment is carried out multiple times. After the construction of a hollow pier segment is completed, the internal cavity anti-fall platform is connected to the pre-reserved tie rod hole at the top of the poured segment by threaded steel bars to continue the construction of the next hollow pier segment.

[0017] The beneficial effects of the hollow pier safety protection system provided in this embodiment of the invention include: This hollow pier safety protection system features an inner cavity anti-fall platform that serves as both an operating platform for rebar tying and inner formwork installation / removal, and an anti-fall barrier during concrete pouring, achieving "one machine, multiple uses." The inner frame assists in the installation of inner rebar, eliminating the need for temporary scaffolding throughout the process, significantly improving safety and efficiency. During construction, the outer frame is hoisted onto the climbing formwork concrete pouring platform by a tower crane and rigidly fixed to the formwork frame. Workers complete the rebar installation in a fully enclosed protective environment. After construction, the inner and outer frames are transferred by tower crane to other pier locations for reuse, achieving "zero-gap" connection and enabling efficient turnover and use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the application of the hollow pier safety protection system in the construction of hollow piers according to this embodiment; Figure 2 This is a structural schematic diagram of the internal cavity anti-fall platform; Figure 3 This is a schematic diagram of the inner tube frame structure; Figure 4 This is a schematic diagram of the tire frame after it has been assembled from two U-shaped safety frames. Figure 5This is a schematic diagram of the U-shaped safety frame.

[0020] Icons: 110-Inner cavity anti-fall platform; 111-Planar truss structure main body; 112-Flexible steel mesh; 113-Threaded steel; 120-Support base; 130-Inner formwork; 131-First vertical ladder; 132-First safety gate; 140-Outer formwork; 141-Second vertical ladder; 142-U-shaped safety frame; 143-Second safety gate; 144-Guard railing; 151-Anti-slip steel plate; 161-Square steel; 201-Cast segment; 202-Reinforcing steel; 301-Inner formwork; 302-Tie rod hole; 401-Outer formwork. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0027] like Figures 1 to 5As shown, this embodiment of the invention provides a hollow pier safety protection system, comprising an inner cavity anti-fall platform 110, a support base 120, an inner frame 130, and an outer frame 140; The internal cavity fall protection platform 110 is used to be installed inside the hollow pier and covers the hollow area inside the hollow pier to prevent workers from falling when installing or removing the inner formwork. The support base 120 is used to place and fix it on the top surface of the poured segment 201 of the hollow pier. The inner frame 130 is placed on the support base 120 to facilitate the workers to tie the steel bars 202 in the hollow pier cavity and to allow personnel to enter and exit. The outer frame 140 is used to set up outside the uncast area of ​​the hollow pier and on the climbing formwork concrete pouring platform to facilitate workers in tying the external reinforcing bars 202.

[0028] The hollow pier safety protection system features an inner cavity anti-fall platform 110 that serves as both an operating platform for binding the reinforcing bars 202 and installing / removing the inner formwork 301, and an anti-fall barrier during concrete pouring, achieving "one machine for multiple uses." The inner frame 130 assists in the installation of the inner reinforcing bars 202, eliminating the need for temporary scaffolding throughout the process and significantly improving safety and efficiency. During construction, the outer frame 140 is hoisted onto the climbing formwork concrete pouring platform and rigidly fixed to the formwork frame using a tower crane. Workers complete the installation of the reinforcing bars 202 in a fully enclosed protective environment. After construction is completed, the inner frame 130 and outer frame 140 are transferred by the tower crane to other pier locations for reuse, achieving "zero gap" connection and enabling efficient turnover and use.

[0029] Regarding the internal cavity fall protection platform 110: Optionally, each internal cavity fall arrest platform 110 includes a planar truss structure main body 111 constructed of angle steel and a flexible steel mesh 112 laid on the truss structure main body.

[0030] Furthermore, a planar truss structure 111 is constructed using ∠63×6 angle steel (800mm spacing) to cover the entire hollow pier cavity; the protective layer is a D6@200mm flexible steel mesh 112, which combines fall prevention and lightweight characteristics.

[0031] Optionally, the internal cavity fall arrest platform 110 also includes multiple threaded steel bars 113 connected to the main truss structure. During the installation or dismantling phase of the inner mold 301, the internal cavity fall arrest platform 110 is fixed by connecting the threaded steel bars 113 to the tie rod holes 302 reserved during the construction of the hollow pier. Specifically, the threaded steel bars are threaded through the tie rod holes and then tightened with nuts. Furthermore, to ensure the stability of the installation, the threaded steel bars 113 are φ32mm precision rolled threaded steel bars.

[0032] The application of the internal cavity fall protection platform 110 is as follows: (1) Concrete pouring stage: The platform is supported on the square steel 161 (spaced 2m) laid on the inner mold 301, covering the inner cavity. The workers can stand on the platform to operate the placing device, avoiding high-altitude suspended operation. (2) Installation / removal stage of inner mold 301: The platform is hoisted to the position of tie rod hole 302 and fixed by φ32mm precision rolled thread steel 113 to seal the hollow part of the inner cavity and prevent tools and materials from falling; it provides a working surface as an operating platform and at the same time continues to play the anti-fall function to ensure the safety of the whole process.

[0033] Regarding the inner tube frame 130: Optionally, the inner frame 130 adopts a welded truss of ∠63×6 angle steel, and the span can be flexibly adjusted according to the pier size.

[0034] Optionally, the top and bottom panels of the inner tube frame 130 are made of 5mm patterned anti-slip steel plate 151 with a load-bearing capacity ≥2.5kN / m. 2 It takes into account both anti-slip and load-bearing requirements.

[0035] Optionally, the inner tube frame 130 is provided with a first vertical ladder 131 to facilitate workers' access.

[0036] Optionally, a first safety door 132 is provided at the top of the inner tube frame 130 corresponding to the first vertical ladder 131. This safety door is a flip-up type and also has a load-bearing capacity ≥2.5kN / m. 2 It is made of anti-slip steel plate 151.

[0037] Optionally, the support base 120 consists of at least three square steel bars 161. During construction, each square steel bar 161 spans across the top surface of the already poured segment 201 of the hollow pier to provide support for the inner frame 130.

[0038] The application of inner tube frame 130 is as follows: (1) Support erection: A base (e.g., 3 square steel bars 161) is arranged in parallel on the top surface of the already poured pier body to form a stable support base 120; (2) Hoisting and fixing: The tower crane hoists the inner frame 130 to the square steel 161 platform, and accurately positions it by means of limit blocks, and reinforces the stability by binding it with iron wire and steel pipe; (3) Work content: The inner side steel bar 202 is installed without the need for temporary scaffolding, which significantly improves safety and efficiency.

[0039] Regarding tire frame 140: Optionally, the outer frame 140 can be formed by splicing two U-shaped safety frames 142, which are fitted over the uncast portion of the hollow pier. Specifically, to achieve a stable connection, the contact area of ​​the two U-shaped safety frames 142 is connected and fixed using U-shaped bolts or other connecting tools.

[0040] Optionally, the U-shaped safety frame 142 adopts a welded truss of ∠63×6 angle steel, and the span can be flexibly adjusted according to the pier size.

[0041] Optionally, the U-shaped safety frame 142 has two operating platforms, each platform being formed by laying 5mm patterned anti-slip steel plate 151 on the panel, with a load-bearing capacity ≥2.5kN / m. 2 It takes into account both anti-slip and load-bearing requirements.

[0042] Optionally, a guardrail 144 is installed on the outer side of the outer frame 140. Optionally, the guardrail 144 is 1.2m high. Specifically, the frame of the guardrail 144 consists of a 1.2m high guardrail post + three ∠50×5 angle steel crossbars, and the outer side is a fully enclosed perforated guardrail mesh (mesh size ≤ 50mm). The installation of the guardrail 144 completely blocks the risk of falling.

[0043] Optionally, a second vertical ladder 141 is provided on the outer frame 140, the ladder being constructed of ∠63×6 angle steel steps. A second safety gate 143 (flip-type, load-bearing capacity ≥200kg) is provided at the top of the ladder corresponding to the second vertical ladder 141 to ensure the safety of personnel going up and down.

[0044] The application of the tire frame 140 is as follows: (1) Lifting and positioning: After the upper section of concrete is poured, the outer frame 140 is lifted by the tower crane to the climbing formwork concrete pouring platform and rigidly fixed to the formwork frame by U-shaped clips; (2) Work process: Workers enter the platform via a vertical ladder and complete the installation of steel bar 202 in a fully enclosed protective environment; (3) Cyclic lifting: After the reinforcement 202 is tied, the outer frame 140 is transferred by the tower crane to other piers for reuse. This pier is then transferred to the formwork installation process to achieve "zero gap" connection.

[0045] This invention provides a method for constructing hollow piers, including: On the basis of a section that has already been poured on the pier cap, at least one hollow pier segment construction shall be carried out; The construction methods for each hollow pier segment include: The installation of the inner cavity anti-fall platform 110 is achieved by connecting the threaded steel 113 of the inner cavity anti-fall platform 110 to the pre-reserved tie rod hole 302 at the top of the already poured section of the hollow pier. Above the internal cavity anti-fall platform 110, a support base 120 spanning the hollow part is set on the end face of the already poured segment of the hollow pier. Place the inner tube frame 130 on the support base 120; Workers used the inner tube frame 130 to tie the inner steel bars 202; An outer frame 140 was placed on the climbing formwork concrete pouring platform; Workers used the outer frame 140 to tie the outer steel bar 202; Remove the inner mold 130 and install the inner mold 301 on the inner side of the hollow pier. As the installation position of the inner mold 301 is raised, the inner cavity anti-fall platform 110 is moved upward (each time the inner cavity anti-fall platform 110 is moved, it is fixed by connecting the threaded steel 113 to the pre-reserved tie rod hole 302 at the corresponding position). Finally, the inner cavity anti-fall platform 110 is moved above the inner mold 301 as a concrete pouring operation platform. A square steel 161 spanning the inner cavity of the hollow pier is laid on the inner mold 301. The square steel 161 provides support for the inner cavity anti-fall platform 110. Remove the outer frame 140 and install the outer mold 401 on the outside of the hollow pier; Concrete is poured, and after the concrete strength meets the requirements, the inner mold 301 and the outer mold are removed. During the removal of the inner mold 301, the inner cavity anti-fall platform 110 moves with the height as the removal height changes (each time the inner cavity anti-fall platform 110 moves, it is fixed by pulling the threaded steel 113 into the pre-reserved tie rod hole 302 at the corresponding position).

[0046] Optionally, the construction of each hollow pier segment may be carried out multiple times. After the construction of a hollow pier segment is completed, the inner cavity anti-fall platform 110 is connected to the pre-reserved tie rod hole 302 at the top of the poured segment 201 by threaded steel 113, and the construction of the next hollow pier segment is repeated.

[0047] Optionally, when installing the inner frame 130 and the outer frame 140, they can be stably anchored using bolts or other connecting tools, which can give the frame, especially the outer frame 140, a good wind resistance rating, enabling it to withstand typhoon weather in coastal areas and ensuring construction safety under extreme weather conditions.

[0048] The hollow pier safety protection system provided in this invention has high adaptability in hollow pier construction, covering various pier types such as hollow piers ≥30 meters in height, high piers, and double / single-limb thin-walled piers in highway / railway engineering. For different structural forms (e.g., double-limb hollow piers require additional connecting components to achieve collaborative operation of the double-frame system; single-limb thin-walled piers can have their structure simplified to improve efficiency), by adjusting the frame size parameters and structural details, it can precisely match the requirements of key processes such as rebar tying, formwork installation, and concrete pouring, achieving efficient unity between safety protection and construction operations.

[0049] The hollow pier safety protection system and hollow pier construction method provided by this invention control the risk of falls: the fully enclosed guardrail + anti-slip steel plate 151 design reduces the risk of falls from heights by 85%, and the accident rate of traditional processes is reduced from 0.3 times / 10,000 man-hours to 0.04 times / 10,000 man-hours; climbing safety guarantee: dedicated vertical ladder + load-bearing safety door completely eliminates climbing fall accidents.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A safety protection system for hollow piers, characterized in that, Internal cavity anti-fall platform, support base, inner tube frame and outer tube frame; The inner cavity anti-fall platform is used to be installed inside the hollow pier and covers the hollow area inside the hollow pier. It is used to prevent workers from falling when installing or dismantling the inner formwork. The support base is used to place and fix it on the top surface of the already poured segment of the hollow pier. The inner frame is placed on the support base to facilitate the workers to carry out the work of binding the steel bars in the hollow pier cavity and to allow the workers to enter and exit. The outer frame is used to set up outside the uncast area of ​​the hollow pier and on the climbing formwork concrete pouring platform to facilitate the workers to tie and pour the external reinforcement.

2. The hollow pier safety protection system according to claim 1, characterized in that, Each of the aforementioned internal cavity anti-fall platforms includes a planar truss structure main body constructed of angle steel and a flexible steel mesh laid on the truss structure main body.

3. The hollow pier safety protection system according to claim 2, characterized in that, The internal cavity anti-fall platform also includes multiple threaded steel bars connected to the main truss structure. The internal cavity anti-fall platform is fixed by connecting the threaded steel bars to the tie rod holes reserved during the construction of the hollow pier.

4. The hollow pier safety protection system according to claim 1, characterized in that, The supporting base consists of at least three square steel bars. During construction, each square steel bar spans across the top surface of the already poured segment of the hollow pier.

5. The hollow pier safety protection system according to claim 1, characterized in that, Includes at least one of the following features (1) and (2): (1) The inner tube frame is a truss formed by welding angle steel; (2) A first vertical ladder is provided on the inner tube frame.

6. The hollow pier safety protection system according to claim 5, characterized in that, The top and bottom of the inner tube frame are covered with anti-slip steel plates, and a first safety door is opened at the top of the inner tube frame corresponding to the vertical ladder.

7. The hollow pier safety protection system according to claim 1, characterized in that, The outer tire frame is formed by splicing two U-shaped safety frames.

8. The hollow pier safety protection system according to claim 1, characterized in that, A second vertical ladder is installed inside the outer tire frame.

9. The hollow pier safety protection system according to claim 8, characterized in that, The outer tire frame has two working platforms, each of which is formed by laying anti-slip steel plates.

10. The hollow pier safety protection system according to claim 9, characterized in that, The work platform is equipped with a second safety door corresponding to the second vertical ladder.

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