Subway ventilation pavilion vertical shaft lifting suspension type formwork lining construction system

Abstract

The utility model relates to a subway ventilation pavilion vertical shaft lifting suspension type formwork lining construction system, and belongs to the technical field of rail transit construction. Comprising a bearing support, a hydraulic lifting mechanism and a platform truss. A hanging device is arranged on the platform truss, a working platform and a template mechanism are hung on the hanging device, and the working platform and the template mechanism are lifted through the hanging device. An electrical connection control system is used for controlling a lifting platform truss, a working platform and a formwork mechanism, primary supporting and steel bar binding are carried out on the working platform, the formwork mechanism is lifted and installed after primary supporting and steel bar binding are completed, concrete is poured into the formwork mechanism, meanwhile, upper primary supporting and steel bar binding are carried out on the upper working platform, and when the concrete is condensed and reaches the design strength, the formwork mechanism is lifted and installed. And the formwork is disassembled and lifted to the upper portion, and the steps are repeated till the designed height is reached. The lifting suspension type construction system replaces the manual support erecting process, the construction efficiency is improved, and the safety risk and the investment cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail transit construction and relates to a subway wind pavilion shaft lifting and hanging type formwork lining construction system. Background Art

[0002] During the construction of subway wind tunnel shafts, the traditional method often involves erecting full-height scaffolding layer by layer, starting from the bottom upwards. While this construction method can meet the project requirements to a certain extent, its drawbacks cannot be ignored. Specifically, the construction team must first start at the bottom of the wind tunnel shaft and gradually erect full-height scaffolding layer by layer. This step is not only time-consuming and labor-intensive, but the number of scaffolding required also increases dramatically as the shaft depth increases, significantly increasing the project investment cost.

[0003] After the scaffolding is set up, the next step is to install the formwork. This installation requires precise alignment to ensure the quality of the subsequent concrete pour. However, within the confined space of the shaft, this operation often becomes extremely difficult, not only increasing the construction difficulty but also further delaying the project schedule. Next, the construction workers pour concrete into the formwork, and after the concrete sets, they remove the formwork. This process is also time-consuming and labor-intensive, especially in the deep wind tunnel shaft, where removing the formwork is extremely tedious.

[0004] Furthermore, this traditional construction method was inefficient, leading to slow project progress. The erection of each layer of scaffolding, the installation and removal of formwork, and the pouring and setting of concrete all took considerable time. This presented a significant challenge for the time-sensitive nature of subway construction projects.

[0005] Furthermore, as the height of the erection increases, so do safety risks. Full-height scaffolding is prone to instability and collapse during high-altitude operations, posing a serious threat to the lives of construction workers. Furthermore, the storage and transportation of large quantities of scaffolding materials within the shaft significantly inconveniences site management, further increasing safety risks.

[0006] In view of the above-mentioned drawbacks, there is an urgent need for a construction plan that can effectively improve work efficiency, reduce project investment and construction safety risks. Utility Model Content

[0007] In view of this, the purpose of the present invention is to provide a subway wind shelter shaft lifting and hanging formwork lining construction system, which can improve work efficiency, reduce project investment and construction safety risks.

[0008] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0009] A subway wind shelter shaft lifting and suspension formwork lining construction system comprises a load-bearing support and a platform truss suspended on the load-bearing support via a hydraulic lifting mechanism; the platform truss is provided with a plurality of hanging devices, each of which is suspended with a working platform and a formwork mechanism in sequence from top to bottom, and the working platform and formwork mechanism are lifted by the hanging devices; a formwork platform is provided between adjacent formwork mechanisms.

[0010] Optionally, the hydraulic lifting mechanism includes a jack installed on the load-bearing bracket, and the jack is connected to the platform truss via a steel wire rope.

[0011] Optionally, the steel strands are connected to the platform trusses via anchors.

[0012] Optionally, the anchor includes an anchor plate and a clip, the steel strand passes through the platform truss and the anchor plate in sequence, and the clip is clamped at one end of the steel strand away from the anchor plate.

[0013] Optionally, the hanging device includes a vertically rotating drum arranged at the bottom of the platform truss, one end of the chain is fixedly connected to the drum, and as the drum rotates, the chain begins to wrap around the drum, and the working platform and template mechanism connected in sequence on the chain are lifted by shortening the hanging length of the chain.

[0014] Optionally, the template mechanism includes templates arranged in pairs and side by side, and the two side-by-side templates are limited and fixed by tension screws and cross braces.

[0015] Optionally, each of the chains is individually connected to one of the templates.

[0016] Optionally, a railing is provided on the working platform.

[0017] Optionally, at least two platform trusses are arranged side by side, each platform truss is provided with at least two hanging devices, and at least four hanging devices are respectively connected to the same working platform.

[0018] Optionally, the working platform is a patterned plate.

[0019] The beneficial effects of the present invention are:

[0020] This utility model abandons the traditional full-floor scaffolding erection method and adopts a more efficient and safe lifting and hanging construction system to replace the manual scaffolding process. It can not only greatly improve construction efficiency, but also effectively reduce the number of on-site personnel, especially when the shaft depth is large, it can further reduce safety risks, and the advantages in all aspects are more significant. The formwork mechanism is suspended at the bottom of the entire system through a hanging device, which is more in line with the construction sequence. While pouring concrete into the formwork, the upper working platform can simultaneously carry out preliminary work such as initial support and steel bar binding. The work efficiency is higher, the construction division is clearer, and the safety risks and construction chaos caused by cross-work are avoided.

[0021] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a cross-sectional schematic diagram of the utility model before lifting;

[0024] Figure 2 This is a schematic cross-sectional view of the utility model after lifting;

[0025] Figure 3 for Figure 1 A magnified view of part A;

[0026] Figure 4 for Figure 1 A magnified view of part B;

[0027] Figure 5 for Figure 1 Enlarged view of part C.

[0028] Reference numerals:

[0029] 1 load-bearing support, 2 hydraulic lifting mechanism, 21 jack, 22 steel strand, 23 anchor, 231 anchor plate, 232 clip, 3 platform truss, 4 hanging device, 41 drum, 42 chain, 5 working platform, 51 railing, 6 formwork mechanism, 61 formwork, 62 tension screw, 63 formwork platform, 7 control system, 8 partition wall, 81 steel cage. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0031] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figures 1 to 5 , is a subway wind shelter shaft lifting and hanging formwork lining construction system, comprising a load-bearing support 1 fixed to the shaft mouth, and a platform truss 3 suspended from the load-bearing support 1 by a hydraulic lifting mechanism 2; a hanging device 4 is provided on the platform truss 3, on which a working platform 5 and a formwork mechanism 6 are suspended in sequence from top to bottom, and the working platform 5 and the formwork mechanism 6 are lifted by the hanging device 4; initial support and steel bar binding are carried out on the working platform 5, and the formwork mechanism 6 is used for formwork installation and concrete pouring, and initial support, steel bar binding, formwork installation, and concrete pouring are carried out simultaneously. Among them, the load-bearing support 1 is preferably a support beam made of steel sections. A handrail 51 is provided on the working platform 5 to prevent workers and equipment from falling and reduce safety risks; the working platform 5 is a checkered plate with the characteristics of anti-slip, wear-resistant, and easy to clean and maintain.

[0034] The hydraulic lifting mechanism 2 includes a jack 21 mounted on the load-bearing bracket 1, and the jack 21 is connected to the platform truss 3 via a steel strand 22. The jack 21 is preferably a through-type jack 21.

[0035] The steel strand 22 is connected to the platform truss 3 via an anchor 23. The anchor 23 includes an anchor plate 231 and a clip 232. The steel strand 22 passes through the platform truss 3 and the anchor plate 231 in sequence. The clip 232 clamps the end of the steel strand 22 away from the anchor plate 231, fastening the steel strand 22 to the platform truss 3.

[0036] The hanging device 4 includes a drum 41 that is vertically rotated and arranged at the bottom of the platform truss 3. One end of the chain 42 is fixedly connected to the drum 41. As the drum 41 rotates, the chain 42 begins to wind around the drum 41. The working platform 5 and the formwork mechanism 6 connected in sequence to the chain 42 are lifted by shortening the hanging length of the chain 42.

[0037] The platform truss 3 is equipped with several hanging devices 4, each of which hangs a formwork mechanism 6. A formwork platform 63 is located between adjacent formwork mechanisms 6. Formwork platforms 63 can be used to perform preparatory work such as initial support and reinforcement binding prior to formwork installation, while working simultaneously with the formwork mechanisms 6. Each formwork mechanism 6 includes a pair of side-by-side formworks 61, which are secured in place by tensioning screws 62 and cross braces. Each chain 42 connects to a separate formwork 61.

[0038] At least two platform trusses 3 are arranged side by side, each platform truss 3 is provided with at least two hanging devices 4 , and at least four hanging devices 4 are respectively connected to the same working platform 5 .

[0039] The work platform 5 is used for initial support and steel bar tying, while the formwork mechanism 6 is used for concrete pouring. Using multiple suspended work platforms 5 for subway wind shelter shaft construction not only prevents falls by handrails on the work platforms, providing safety during construction, but also defines the construction area, serves to divert and guide personnel, and avoids the safety risks associated with cross-operation.

[0040] In this embodiment, eight hanging devices 4 are installed on each platform truss 3 to construct the partition wall 8. Each platform truss 3 holds four parallel working platforms 5. The bottoms of two hanging devices 4 between adjacent working platforms 5 jointly hold a formwork mechanism 6, facilitating the reinforcement binding and concrete pouring of the partition wall 8. The hanging devices 4 at each end hold a separate formwork 61, creating a construction space for the partition wall 8 between the formwork 61 and the shaft wall.

[0041] There are at least two platform trusses 3 arranged side by side, and every two adjacent platform trusses 3 jointly suspend a row of working platforms 5 for the construction of partition walls 8. The partition walls 8 are divided into side partition walls and middle partition walls. The side partition walls are arranged along the walls of the shaft, and the distribution direction and number of the middle partition walls are determined according to the plane dimensions of the shaft.

[0042] The gap between the bottom of each template 61 and the lower partition wall 8 or the bottom of the shaft is leveled with mortar.

[0043] A method for constructing a suspended formwork lining for a subway wind shelter shaft, using the aforementioned construction system, wherein the construction system is electrically connected to a control system 7 for controlling the lifting and lowering of the construction system, comprises the following steps:

[0044] S1, installation of the construction system; fix the load-bearing support 1 at the shaft entrance, and install the hydraulic lifting mechanism 2 on the load-bearing support 1. The hydraulic lifting mechanism 2 is connected to the platform truss 3 via steel strands 22. The steel strands 22 are fixedly connected to the platform truss 3 via anchors 23. The bottom of the platform truss 3 is connected to the hanging device 4. The chain 42 of the hanging device 4 is sequentially connected to several working platforms 5 and formwork mechanisms 6;

[0045] S2, control the hydraulic lifting mechanism 2 and the hanging device 4 through the control system 7 to respectively lift the platform truss 3, the working platform 5 and the formwork mechanism 6 to the construction position at the corresponding height;

[0046] The drum 41 of the hanging device 4 is rotated to wind the chain 42 thereon, the hanging length of the chain 42 is shortened, and the chain 42 is lifted until the template mechanism 6 is located at the bottom of the shaft;

[0047] S3, performing initial support and tying steel bars into a steel cage 81 on the working platform 5;

[0048] S4, placing the templates 61 on both sides of the steel cage 81, each template 61 is connected to the chain 42, and installing cross braces and tension screws 62 between the templates 61 on both sides of the steel cage 81 to limit and fix the templates 61; setting cross braces between the templates 61 on both sides of the steel cage 81 to limit the spacing between adjacent templates 61, and then sequentially setting tension screws 62 through the adjacent templates 61 to fix them;

[0049] S5, pour concrete into the steel cage 81, while continuing the upper initial support and steel bar binding work on the working platform 5 above the formwork 61; after the concrete solidifies and reaches the design strength, remove the cross brace, tension screws 62 and formwork 61; select the appropriate design strength according to relevant regulations and project conditions;

[0050] S6, after the upper initial support and steel bar binding work are completed, the control system 7 controls the lifting platform truss 3 and the hanging device 4, and repeats the work of steps S4 to S5 until the designed construction height position is reached.

[0051] The construction system of this utility model allows for continuous concrete pouring, boasting rapid construction, strong adaptability, simple formwork construction, and high safety. This utility model is suitable for the construction of deeper subway wind tunnel shafts, particularly for the primary support and secondary lining processes of subway wind tunnel shafts, offering technical advantages such as high safety, rapid work efficiency, and cost savings.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A subway wind shelter shaft hoisting suspended formwork lining construction system, characterized by: The invention comprises a load-bearing support (1) and a platform truss (3) suspended on the load-bearing support (1) via a hydraulic lifting mechanism (2); a plurality of hanging devices (4) are provided on the platform truss (3); a working platform (5) and a template mechanism (6) are hung on each hanging device (4) in sequence from top to bottom; the working platform (5) and the template mechanism (6) are lifted by the hanging devices (4); and a template platform (63) is provided between adjacent template mechanisms (6).

2. The subway wind shelter shaft hoisting suspended formwork lining construction system according to claim 1 is characterized by: The hydraulic lifting mechanism (2) comprises a jack (21) mounted on the load-bearing bracket (1), and the jack (21) is connected to the platform truss (3) via a steel strand (22).

3. The subway wind shelter shaft hoisting suspended formwork lining construction system according to claim 2 is characterized by: The steel strand (22) is connected to the platform truss (3) via an anchor (23).

4. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 3 is characterized by: The anchor (23) comprises an anchor plate (231) and a clip (232); the steel strand (22) passes through the platform truss (3) and the anchor plate (231) in sequence; the clip (232) clamps the end of the steel strand (22) away from the anchor plate (231).

5. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 1 is characterized by: The hanging device (4) includes a drum (41) that is vertically rotatable and arranged at the bottom of the platform truss (3). One end of a chain (42) is fixedly connected to the drum (41). As the drum (41) rotates, the chain (42) begins to wind around the drum (41), and the working platform (5) and the template mechanism (6) connected in sequence to the chain (42) are lifted by shortening the hanging length of the chain (42).

6. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 1 or 5, characterized in that: The template mechanism (6) comprises templates (61) arranged in pairs and side by side, and the two templates (61) arranged side by side are fixed and limited by tension screws (62) and cross braces.

7. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 5 is characterized by: Each of the chains (42) is individually connected to one of the templates (61).

8. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 1 is characterized by: The working platform (5) is provided with a handrail (51).

9. The subway wind shelter shaft hoisting suspended formwork lining construction system according to claim 1 is characterized by: At least two platform trusses (3) are arranged side by side, each platform truss (3) is provided with at least two hanging devices (4), and at least four hanging devices (4) are respectively connected to the same working platform (5).

10. The subway wind shelter shaft hoisting suspension formwork lining construction system according to claim 1 is characterized by: The working platform (5) is a patterned plate.

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