A parapet single-side formwork system for steel structure roof

Abstract

The utility model discloses a kind of for steel structure roof parapet single-sided formwork system, it is related to building engineering technical field, including steel beam, and template panel and at least one group of supporting components being set on the steel beam;The template panel is arranged on the side of the flange of steel beam;One group of the supporting components includes two vertical first fixed parts, second fixed part and at least two third fixed parts;The utility model utilizes the edge plate of roof truss floor support plate and directly as the outside formwork of parapet pouring by heightening, avoids the added construction period of erecting operation frame, greatly shortens installation period. Traditional method needs to use a large number of formwork, material and cost increase, material waste is unavoidable, cause inefficient cost, unilateral formwork can reduce material waste and cost expenditure.In addition, the current parapet formwork needs to erect cantilever operation frame, the heightening of edge plate can reduce the risk brought by erecting operation frame.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a single-sided formwork system for parapet walls of steel structure roofs. Background Technology

[0002] As an important enclosure structure of a building's roof, the parapet wall not only plays a crucial role in safety protection but also directly affects the building's appearance and the roof's waterproofing performance. Its height typically ranges from 300mm to 1200mm, and it is mostly constructed by on-site casting of reinforced concrete.

[0003] In traditional construction, when pouring concrete for the parapet wall of a steel structure roof, the outer formwork must be erected first. There are two main conventional methods: First, a full-span scaffold is erected from the ground up to roof height before the parapet wall formwork is installed; second, a cantilevered working platform is erected below the roof slab using embedded parts, allowing workers to perform high-altitude operations. After the formwork is completed, concrete is poured, and the formwork and working platform are removed once the concrete has reached the required strength.

[0004] However, the aforementioned traditional construction methods have many obvious drawbacks:

[0005] First, construction efficiency is low and the construction period is long. Regardless of the scaffolding method used, erecting the scaffolding is a time-consuming and labor-intensive process that seriously occupies the critical construction period, resulting in an extension of the overall project construction schedule and a significant increase in time costs.

[0006] Secondly, it results in significant material waste and poor economic efficiency. Traditional processes require the use of large quantities of reusable materials such as wooden formwork, steel pipes, and fasteners. These materials not only have high procurement costs but also suffer from extremely high loss rates during transportation, erection, dismantling, and reuse, generating substantial inefficient and ineffective costs and causing serious material waste, which contradicts the current green and energy-saving building construction concepts.

[0007] Finally, and most importantly, the safety risks are enormous. The erection of scaffolding, especially cantilevered scaffolding reaching heights of tens of meters (or even exceeding 36 meters), is inherently a high-risk operation. During construction, workers are constantly exposed to high-altitude, edge-prone environments, facing multiple safety threats such as falls from heights, being struck by objects, scaffold instability, and even collapse. The safety hazards are extremely prominent, posing a severe challenge to project management.

[0008] Therefore, there is an urgent need in this field for a new parapet wall formwork construction technology that can eliminate the need for external scaffolding, improve construction efficiency, save costs, and fundamentally reduce safety risks. Utility Model Content

[0009] This utility model provides a single-sided formwork system for parapet walls of steel structure roofs, which solves the technical problems in the background art.

[0010] To solve the above-mentioned technical problems, this utility model provides a single-sided formwork system for parapet walls of steel structure roofs, including a steel beam, a formwork panel disposed on the steel beam, and at least one set of support components; the formwork panel is disposed on one side of the upper flange of the steel beam; the set of support components includes two vertically arranged first fixing members, a second fixing member, and at least two third fixing members; the two first fixing members are spaced apart on the surface of the formwork panel away from the concrete pouring side, and the bottom end of the first fixing member is fixedly connected to the upper flange of the steel beam; the second fixing member is horizontally disposed between the two first fixing members, and both ends of the second fixing member are fixedly connected to the two first fixing members respectively; the third fixing member is inclined, one end of the third fixing member is fixedly connected to the first fixing member, and the other end of the third fixing member is fixedly connected to the upper flange of the steel beam.

[0011] Preferably, the template panel is a raised truss floor decking edge panel, and the bottom edge of the template panel is fixed to the upper flange of the steel beam by spot welding, making full use of existing materials and realizing the integration of floor decking installation and parapet wall formwork support.

[0012] Preferably, the height of the template panel is greater than 600mm, so that the template panel can adapt to the construction needs of parapet walls of common heights.

[0013] Preferably, the first, second, and third fasteners are all angle steel, taking advantage of the low cost, easy availability, and ease of welding of angle steel to ensure the rigidity and stability of the support system.

[0014] Preferably, the first, second, and third fasteners are all 30mm×30mm×3mm in size, which facilitates procurement and construction.

[0015] Preferably, the interval between the two first fasteners is no more than 2m. By setting a reasonable spacing, the material usage is optimized and waste is avoided while ensuring uniform and effective support for the template panel.

[0016] Preferably, the height of the first fastener is lower than the height of the formwork panel to prevent the top of the fastener from exceeding the concrete pouring surface, affecting the construction of the parapet wall coping or causing appearance defects, while ensuring the effective support height of the formwork panel.

[0017] Preferably, the welding position of the second fastener on the first fastener is located in the middle of the height of the first fastener, providing effective lateral ties for the two first fasteners, forming a stable frame, and better transferring the supporting force to the entire structural system.

[0018] Preferably, the connection point between the third fastener and the upper flange of the steel beam is located within the orthographic projection range of the template panel onto the upper flange of the steel beam, ensuring that the support point of the diagonal brace is hidden within the bottom range of the final completed parapet wall, avoiding exposure that affects aesthetics and waterproofing, while forming the optimal mechanical support angle.

[0019] Compared with related technologies, the single-sided formwork system for parapet walls of steel structure roofs provided by this utility model has the following advantages:

[0020] This utility model provides a single-sided formwork system for parapet walls of steel structure roofs. During operation, the formwork panel acts as a side mold for pouring concrete, bearing the lateral pressure of the freshly poured concrete. This lateral pressure is transmitted to the support components through the formwork panel. A vertical first fixing member transmits the lateral pressure downwards to the steel beam; a horizontal second fixing member serves to tie and distribute the load; and a diagonal third fixing member provides crucial diagonal support, converting part of the horizontal lateral pressure into downward pressure transmitted to the upper flange of the steel beam, forming a stable stress system that effectively prevents the formwork from overturning or deforming during pouring.

[0021] This utility model provides a single-sided formwork system for parapet walls of steel structure roofs. The edge plates of the roof truss floor decking, by being heightened, can be directly used as the outer formwork for the parapet wall pouring, eliminating the construction time added by erecting scaffolding and significantly shortening the installation period. Traditional methods require a large number of formworks, increasing material costs and inevitably leading to material waste and inefficient costs. Single-sided formwork reduces material waste and cost expenditure. Furthermore, current parapet wall formwork requires the erection of cantilevered scaffolding, with some locations reaching heights of up to 36 meters, posing extremely high installation risks. The heightening of the edge plates reduces the risks associated with erecting scaffolding. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the support component structure of this utility model.

[0024] The following numbers are marked in the diagram: 100, formwork panel; 200, support component; 300, wooden formwork; 400, beam clamp; 500, steel beam; 600, truss floor deck; 210, first fastener; 220, second fastener; 230, third fastener. Detailed Implementation

[0025] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] This embodiment provides a single-sided formwork system for the parapet wall of a steel structure roof.

[0028] See Figure 1 and Figure 2 The single-sided formwork system mainly includes a formwork panel 100 and a support assembly 200. The formwork panel 100 is made of a 3mm thick, height-adjustable steel plate with a height of 670mm and a bottom edge width of 50mm. The formwork panel 100 is erected on one side of the upper flange of a steel beam 500, which is an I-beam.

[0029] The support assembly 200 is provided in a set, which includes two first fasteners 210, one second fastener 220 and two third fasteners 230.

[0030] Two first fasteners 210, made of angle steel, are vertically installed on the surface of the formwork panel 100 facing away from the concrete pouring side (i.e., the outer side). The distance between the two first fasteners 210 is 2m. The bottom end of the first fastener 210 is fixedly connected to the upper flange of the steel beam 500 by welding. The height of the first fastener 210 is 650mm, which is lower than the 670mm height of the formwork panel 100.

[0031] The second fastener 220 is also made of angle steel and is horizontally positioned between the two first fasteners 210. The welding position of the second fastener 220 is located at the middle of the height of the first fastener 210, and its two ends are fixedly connected to the two first fasteners 210 by welding.

[0032] The two third fasteners 230 are made of angle steel and are installed at an angle. One end of each third fastener 230 is fixedly connected to the upper middle part of a first fastener 210 by welding, and the other end is fixedly connected to the upper flange of the steel beam 500 by welding. The connection point between the third fastener 230 and the upper flange of the steel beam 500 is located within the orthographic projection range of the formwork panel 100 on the upper flange of the steel beam 500, to ensure that the connection point will be completely covered by the subsequently poured parapet wall concrete and will not be exposed.

[0033] Example 2

[0034] Based on Embodiment 1, this embodiment features a raised edge panel 100. This edge panel is laid on the steel beam 500 along with the truss floor deck 600 during floor deck installation. Its material and thickness match those of the floor deck, achieving integration of material and function.

[0035] In terms of fixing method, in addition to being fixed by the support component 200, the bottom edge of the template panel 100 is also directly fixed to the upper flange of the steel beam 500 by spot welding, which enhances the initial stability of the entire template system before concrete pouring.

[0036] In this embodiment, the first fixing member 210, the second fixing member 220, and the third fixing member 230 are preferably made of equilateral angle steel with a specification of 30mm×30mm×3mm. This specification of angle steel ensures sufficient supporting strength while also being economical and lightweight, facilitating on-site welding construction.

[0037] The number of support components 200 can be increased according to the length of the parapet wall. For parapet walls longer than 2m, a set of support components 200 is installed every 2m along its length. The structure of each set of support components 200 is the same as in Embodiment 1: that is, a stable triangular support system is formed by two vertical angle steels (first fixing member 210), one horizontal angle steel (second fixing member 220), and two diagonal angle steels (third fixing member 230).

[0038] Example 3

[0039] This embodiment aims to illustrate how the single-sided formwork system described in this invention can be combined with the wooden formwork 300 in traditional construction processes to further improve applicability and flexibility.

[0040] See Figure 1 In this embodiment, a truss floor deck 600 is laid on the steel beam 500. The floor deck is made of a bottom template rolled from galvanized steel sheet and welded to a steel truss. It is a common floor slab construction component in steel structure buildings.

[0041] The template panel 100 (heightened edge panel) is located at the edge of the floor slab plane, and its inner side is adjacent to or overlaps with the end of the truss floor deck 600.

[0042] For parapet walls with special shape or surface treatment requirements, wooden formwork 300 can be laid on the inner side of the formwork panel 100 (i.e., the concrete pouring side). This wooden formwork 300 serves as an inner lining formwork, and after its removal, the concrete surface can be further treated, while the edge trim board is retained as a permanent formwork.

[0043] To secure the wooden formwork 300, a beam clamp 400 can be installed on the upper flange of the steel beam 500. This beam clamp 400 is an integrated component, fixed to the upper flange of the steel beam 500 by welding steel bars to a steel truss on its sides, or by bolts or welding. It is U-shaped with an opening facing downwards and is used to clamp the wooden formwork 300 to the formwork panel 100. The support component 200 described in this invention primarily functions on the formwork panel 100, providing the main resistance to lateral concrete pressure for the entire wooden formwork 300 and formwork panel 100, while the beam clamp 400 assists in securing the wooden formwork 300.

Claims

1. A single-sided formwork system for parapet walls of steel structure roofs, characterized in that, The system includes a steel beam, a template panel mounted on the steel beam, and at least one set of support components. The template panel is located on one side of the upper flange of the steel beam. The set of support components includes two vertically arranged first fasteners, a second fastener, and at least two third fasteners. The two first fasteners are spaced apart on the surface of the template panel opposite to the concrete pouring side, and the bottom end of the first fastener is fixedly connected to the upper flange of the steel beam. The second fastener is horizontally arranged between the two first fasteners, and both ends of the second fastener are fixedly connected to the two first fasteners respectively. The third fastener is inclined, with one end of the third fastener fixedly connected to the first fastener and the other end of the third fastener fixedly connected to the upper flange of the steel beam.

2. The parapet wall single-sided formwork system for steel structure roofs according to claim 1, characterized in that, The template panel is a raised truss floor deck edge panel, and the bottom edge of the template panel is fixed to the upper flange of the steel beam by spot welding.

3. A single-sided formwork system for parapet walls of steel structure roofs according to claim 2, characterized in that, The height of the template panel is greater than 600mm.

4. A single-sided formwork system for parapet walls of steel structure roofs according to claim 1, characterized in that, The first, second, and third fasteners are all angle steel.

5. A single-sided formwork system for parapet walls of steel structure roofs according to claim 4, characterized in that, The first, second, and third fasteners all have dimensions of 30mm × 30mm × 3mm.

6. A single-sided formwork system for parapet walls of steel structure roofs according to claim 1, characterized in that, The distance between the two first fixing members is no more than 2m.

7. A single-sided formwork system for parapet walls of steel structure roofs according to claim 1, characterized in that, The height of the first fastener is lower than the height of the template panel.

8. A single-sided formwork system for parapet walls of steel structure roofs according to claim 1, characterized in that, The welding position of the second fastener on the first fastener is located at the middle of the height of the first fastener.

9. A single-sided formwork system for parapet walls of steel structure roofs according to claim 1, characterized in that, The connection point between the third fastener and the upper flange of the steel beam is located within the orthographic projection range of the template panel onto the upper flange of the steel beam.

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