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

Abstract

The invention relates to a subway ventilation pavilion vertical shaft lifting suspension type formwork lining construction system and method, and belongs to the technical field of rail transit construction. The construction system comprises 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. The construction method comprises the steps that the electrical connection control system is used for controlling the lifting platform truss, the working platform and the formwork mechanism, primary supporting and steel bar binding are conducted 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, primary supporting and steel bar binding are conducted on the upper working platform, and when the concrete is condensed and reaches the design strength, the formwork mechanism is 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 is adopted to replace 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 invention belongs to the technical field of rail transit construction, and relates to a subway wind pavilion shaft lifting suspension formwork lining construction system and method. Background Art

[0002] In the construction process of the subway wind shelter shaft, the traditional method is often to build full-height brackets layer by layer from the bottom to the top. Although this construction method can meet the project needs to a certain extent, its disadvantages cannot be ignored. Specifically, the construction team first needs to start from the bottom of the wind shelter shaft and build full-height brackets layer by layer. This step is not only time-consuming and labor-intensive, but also as the depth of the shaft increases, the number of brackets required also increases sharply, which greatly increases the investment cost of the project.

[0003] After the support is set up, the next step is to install the formwork. The installation of the formwork requires precise alignment to ensure the quality of the subsequent concrete pouring. However, in the narrow shaft space, this operation often becomes extremely difficult, which not only increases the difficulty of construction, but also further delays the construction period. Next, the construction workers will pour concrete in the formwork, and then remove the formwork after the concrete solidifies. This process also takes a lot of time and manpower, especially in the deep wind pavilion shaft, the work of removing the formwork is extremely cumbersome.

[0004] In addition, this traditional construction method is inefficient, which directly leads to slow progress of the project. The erection of each layer of support, the installation and removal of the formwork, and the pouring and solidification of concrete all take a lot of time. This is undoubtedly a huge challenge for the time-sensitive subway construction project.

[0005] In addition, as the erection height increases, the safety risk also increases. Full-height scaffolding is prone to instability and collapse during high-altitude operations, posing a serious threat to the lives of construction workers. At the same time, the stacking and transportation of a large amount of scaffolding materials in the shaft also brings great inconvenience to on-site management, further increasing safety hazards.

[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. Summary of the invention

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

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

[0009] A subway wind pavilion shaft lifting suspended formwork lining construction system comprises a load-bearing support and a platform truss suspended on the load-bearing support by a hydraulic lifting mechanism; a hanging device is provided on the platform truss, a working platform and a formwork mechanism are hung on the hanging device in sequence from top to bottom, and the working platform and the formwork mechanism are lifted by the hanging device; initial support and steel bar binding are performed on the working platform, and the formwork mechanism is used for formwork installation and concrete pouring, and the initial support, steel bar binding, formwork installation and concrete pouring are performed simultaneously.

[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 drum that is vertically rotatably arranged at the bottom of the platform truss, and one end of the chain is fixedly connected to the drum. As the drum rotates, the chain begins to wrap around the drum, and the working platform and formwork mechanism connected in sequence on the chain are lifted by shortening the hanging length of the chain.

[0014] Optionally, the template mechanism includes templates that are arranged in pairs and side by side, and the two templates that are arranged side by side 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] A subway wind pavilion shaft lifting suspended formwork lining construction method, using any of the above-mentioned construction systems, the construction system is electrically connected to a control system to control the lifting and lowering of the construction system; comprising the following steps:

[0019] S1, installation of construction system;

[0020] S2, controls the hydraulic lifting mechanism and the hanging device through the control system to lift the platform truss, the working platform and the formwork mechanism respectively;

[0021] S3, carry out initial support and steel bar binding into steel cage on the working platform;

[0022] S4, placing the templates on both sides of the steel cage, each template is connected to the chain, and horizontal braces and tension screws are installed between the templates on both sides of the steel cage to limit and fix the templates;

[0023] S5, pour concrete into the steel cage, and continue the upper initial support and steel bar binding work on the working platform above the formwork; after the concrete solidifies and reaches the designed strength, remove the cross brace, tension screw and formwork;

[0024] S6: After the initial upper support and steel bar binding work is completed, the platform truss and hanging device are lifted through the control system, and steps S4 to S5 are repeated until the designed construction height position is reached.

[0025] The beneficial effects of the present invention are:

[0026] The present invention abandons the traditional method of erecting full-floor scaffolds and adopts a more efficient and safe lifting and hanging construction system to replace the process of manually erecting scaffolds. 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 reduce safety risks, and the advantages in all aspects are more significant. The formwork mechanism is hung 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, which has higher work efficiency and clearer construction divisions, avoiding safety risks and construction chaos caused by cross-work.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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 in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 It is a cross-sectional schematic diagram of the present invention before lifting;

[0030] Figure 2 It is a cross-sectional schematic diagram of the present invention after lifting;

[0031] Figure 3 for Figure 1A magnified view of part A;

[0032] Figure 4 for Figure 1 A magnified view of part B;

[0033] Figure 5 for Figure 1 Enlarged view of part C.

[0034] Reference numerals:

[0035] 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

[0036] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways 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 only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0038] 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 the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is 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 operate in a specific orientation. Therefore, the terms describing the position 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.

[0039] See also Figure 1 to Figure 5, is a subway wind pavilion shaft lifting suspended formwork lining construction system, including a load-bearing bracket 1 fixed to the shaft mouth, and a platform truss 3 suspended on the load-bearing bracket 1 through a hydraulic lifting mechanism 2; a hanging device 4 is provided on the platform truss 3, and a working platform 5 and a formwork mechanism 6 are hung on the hanging device 4 from top to bottom in sequence, 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 bracket 1 is preferably a support beam made of steel. A railing 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 patterned plate, which has the characteristics of anti-slip, wear-resistant, and easy to clean and maintain.

[0040] 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. The jack 21 is preferably a through-type jack 21.

[0041] The steel strand 22 is connected to the platform truss 3 through the 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 is clamped at one end of the steel strand 22 away from the anchor plate 231 to fasten the steel strand 22 to the platform truss 3.

[0042] The hanging device 4 includes a drum 41 which is vertically rotatably 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 wrap around the drum 41. The working platform 5 and the formwork mechanism 6 which are sequentially connected to the chain 42 are lifted by shortening the hanging length of the chain 42.

[0043] A plurality of hanging devices 4 are arranged on the platform truss 3, and a template mechanism 6 is hung on each hanging device 4. A template platform 63 is arranged between adjacent template mechanisms 6. The template platform 63 can be constructed synchronously with the template mechanism 6 to perform preliminary work such as initial support and steel bar binding before installing the template. Each template mechanism 6 includes a pair of templates 61 arranged side by side, and the two templates 61 arranged side by side are fixed by tension screws 62 and cross braces. Each chain 42 is connected to a template 61 separately.

[0044] At least two platform trusses 3 are arranged side by side, at least two hanging devices 4 are arranged on each platform truss 3 , and at least four hanging devices 4 are respectively connected to the same working platform 5 .

[0045] The working platform 5 is used for initial support, steel bar binding and other processes, and the formwork mechanism 6 is used for concrete pouring. Using multiple suspended working platforms 5 for subway wind shelter shaft construction can, on the one hand, prevent personnel from falling and provide safety protection for construction; on the other hand, it can define the construction area, play a role in personnel diversion and guidance, and avoid safety risks caused by cross-operation.

[0046] In this embodiment, for the construction of the partition wall 8, eight hanging devices 4 are arranged on each platform truss 3, and four side-by-side working platforms 5 are hung. The bottoms of two hanging devices 4 between adjacent working platforms 5 hang a template mechanism 6 together, so as to facilitate the reinforcement binding and concrete pouring of the partition wall 8. The hanging devices 4 at both ends hang a separate template 61, so that a construction space for the partition wall 8 is formed between the template 61 and the shaft wall.

[0047] At least two platform trusses 3 are 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 shaft wall, and the distribution direction and number of the middle partition walls are determined according to the plane size of the shaft.

[0048] 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.

[0049] A subway wind pavilion shaft lifting suspended formwork lining construction method, using the above-mentioned construction system, the construction system is electrically connected to a control system 7 to control the lifting and lowering of the construction system; comprising the following steps:

[0050] S1, installation of construction system; fixing a load-bearing support 1 at the shaft opening, and installing a hydraulic lifting mechanism 2 on the load-bearing support 1, the hydraulic lifting mechanism 2 is connected to the platform truss 3 through a steel strand 22, the steel strand 22 is fixedly connected to the platform truss 3 through an anchor 23, the bottom of the platform truss 3 is connected to a hanging device 4, and a plurality of working platforms 5 and a template mechanism 6 are sequentially connected to the chain 42 of the hanging device 4;

[0051] 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;

[0052] The drum 41 of the hanging device 4 is rotated to wind the chain 42 thereon, and the hanging length of the chain 42 is shortened and lifted until the template mechanism 6 is located at the bottom of the shaft;

[0053] S3, performing initial support and steel bar binding into a steel cage 81 on the working platform 5;

[0054] S4, placing the templates 61 on both sides of the steel cage 81, each template 61 is connected to the chain 42, and a cross brace is installed between the templates 61 on both sides of the steel cage 81, and the tension screws 62 are used to limit and fix the templates 61; a cross brace is set between the templates 61 on both sides of the steel cage 81 to limit the spacing between adjacent templates 61, and then tension screws 62 are sequentially set through the adjacent templates 61 to fix them;

[0055] S5, pour concrete into the steel cage 81, and continue the upper initial support and steel bar binding work on the working platform 5 above the template 61; after the concrete solidifies and reaches the design strength, remove the cross brace, tension screw 62 and template 61; select the appropriate design strength according to relevant specifications and engineering conditions;

[0056] S6, after the initial upper support and steel bar binding work is 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.

[0057] The construction method of the present invention can continuously pour concrete, and has the characteristics of fast construction speed, strong adaptability, simple template structure, high safety, etc. The construction system and construction method of the present invention are suitable for the engineering construction of deeper subway wind pavilion shafts, especially for the primary support and secondary lining processes of subway wind pavilion shafts, and can have technical advantages in terms of high safety, fast work efficiency, cost saving, etc.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention 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 present invention.

Claims

1. A subway wind pavilion shaft lifting suspension 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) by a hydraulic lifting mechanism (2); a hanging device (4) is arranged on the platform truss (3), and a working platform (5) and a formwork mechanism (6) are hung on the hanging device (4) 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 the initial support, steel bar binding, formwork installation and concrete pouring are carried out simultaneously.

2. The subway wind pavilion shaft lifting suspension 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 support (1), and the jack (21) is connected to the platform truss (3) via a steel strand (22).

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

5. The subway wind pavilion shaft lifting suspension formwork lining construction system according to claim 1 is characterized by: The hanging device (4) comprises a drum (41) which is arranged to rotate vertically 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 be wound around the drum (41); the working platform (5) and the formwork mechanism (6) which are sequentially connected to the chain (42) are lifted by shortening the hanging length of the chain (42).

6. The subway wind pavilion shaft lifting 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 in position by means of tension screws (62) and cross braces.

7. The subway wind pavilion shaft lifting suspension formwork lining construction system according to claim 1 is characterized by: Each of the chains (42) is individually connected to one of the templates (61).

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

9. The subway wind pavilion shaft lifting suspension 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. A subway wind pavilion shaft lifting suspension formwork lining construction method, characterized in that: A construction system according to any one of claims 1 to 9 is used, wherein the construction system is electrically connected to a control system (7) to control the lifting and lowering of the construction system; the construction system comprises the following steps: S1, installation of construction system; S2, controlling 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); S3, performing initial support and tying steel bars into a steel cage (81) on the working platform (5); S4, placing the template (61) on both sides of the steel cage (81), each template (61) is connected to the chain (42), and installing a cross brace between the templates (61) on both sides of the steel cage (81) and a tension screw (62) to limit and fix the template (61); S5, pouring 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 designed strength, the cross brace, the tension screw (62) and the formwork (61) are removed; S6, after the initial upper support and steel bar binding work is completed, the control system (7) controls the lifting platform truss (3) and the hanging device (4) to repeat the work of steps S4 to S5 until the designed construction height position is reached.

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