A parapet wall of a steel structure factory building free of external frame reinforcing structure
By using steel truss floor slabs, tie rods, and a double steel pipe main keel system in the parapet wall of the steel structure factory building, the problems of high material consumption and long construction period in traditional reinforcement methods have been solved, and the construction efficiency of stability and simultaneous molding has been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-04
AI Technical Summary
In the construction of steel structure factory buildings, the reinforcement of the parapet wall's outer formwork requires the erection of a ground-based external operating scaffold, which results in high material consumption, high construction costs, and a long construction period, affecting the project schedule.
Steel truss floor slabs are used as permanent outer formwork, combined with tie rods, butterfly clips and double steel pipe main keel system to form a reinforced structure, avoiding the need to erect ground-based external operation scaffolds, and using suspended formwork steel reinforcement supports to enhance key nodes, thereby achieving the stability and forming quality of the formwork system.
It significantly saves materials and construction time, ensures the stability of the formwork system, enables the simultaneous forming of the parapet wall and the roof slab, improves construction efficiency, and prevents leakage.
Smart Images

Figure CN224591799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a parapet wall reinforcement structure for steel structure factory buildings that does not require external scaffolding. Background Technology
[0002] In the construction of steel structure workshops, the parapet wall, as a vertical enclosure structure at the junction of the roof and the exterior wall, not only plays a role in enclosing the roof and protecting safety, but also needs to take into account structural stability and appearance integrity.
[0003] In traditional processes, wooden formwork is often used to reinforce the outer formwork of parapet walls. To ensure the stability of the formwork during concrete pouring, a ground-supported external scaffold is required for external reinforcement. However, ground-supported external scaffolding is generally not used in steel structure workshops. Instead, steel pipes with steel wire ropes are typically installed on the upper part of the steel beams for protection. If wooden formwork is used to reinforce the parapet wall, ground-supported external scaffolding is required for the outer formwork reinforcement. The erection of the scaffolding consumes a large amount of steel pipes, fasteners, and other materials, increasing construction costs and taking a long time, which seriously restricts the construction schedule. Therefore, a scaffold-free reinforcement structure for parapet walls in steel structure workshops is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a parapet wall reinforcement structure for steel structure factory buildings that does not require external scaffolding, so as to solve the above-mentioned problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel structure factory parapet wall reinforcement structure without external scaffolding, comprising: a steel structure edge beam, which serves as the main connecting structure of the parapet wall; an edge-retaining steel plate is fixedly connected to the upper left side of the steel structure edge beam; a steel truss floor slab is vertically fixedly installed on the right side of the edge-retaining steel plate; truss reinforcement is provided on the steel truss floor slab; the upper right side of the steel structure edge beam is fixedly connected to the roof floor slab; floor slab reinforcement is fixedly installed above the roof floor slab; and a timber secondary keel is fixedly installed on the right side of the steel truss floor slab.
[0006] The tie rod is welded to the truss reinforcement of the steel truss floor slab on its left side. Multiple sets of butterfly clips are fixed to the outer right side of the tie rod by nuts. Multiple sets of double steel pipe main keels are clamped to the inner wall of the butterfly clips.
[0007] In a preferred embodiment, the lower end of the steel truss floor slab is fixedly connected to the upper side of the steel structure side beam. A conventional wooden template is provided between the steel truss floor slab and the timber secondary joists. Tie rods pass through the conventional wooden template and extend to the outside of the butterfly clips. Double steel pipe main joists are attached to the right side of the timber secondary joists.
[0008] In a preferred embodiment, a steel bar is fixedly connected to the inner wall of the roof slab, and diagonal steel pipes are fixedly installed on the outer side of the steel bar and the right side of the butterfly clip by fasteners.
[0009] In a preferred embodiment, a formwork reinforcement support is fixedly installed on the upper part of the steel structure edge beam. The lower end of the formwork reinforcement support is set on the inner wall of the roof floor slab, and the upper part of the formwork reinforcement support is set between the steel truss floor slab and the timber secondary joists.
[0010] In a preferred embodiment, the edge-sealing steel plate is set in an L shape with dimensions of 5mm × 50mm × 100mm.
[0011] In a preferred embodiment, the steel truss floor slab is made of 5mm TD6-140 steel, and the tie rod is of type M14.
[0012] In a preferred embodiment, the secondary timber joists are 40mm × 80mm in size.
[0013] In a preferred embodiment, the multiple sets of double steel pipe main keels are spaced 600mm apart vertically.
[0014] Compared with the prior art, this utility model has the following features and beneficial effects:
[0015] 1. This utility model utilizes steel truss floor slabs as permanent outer formwork and provides reinforcement. Combined with internal tie rods, butterfly clips, and double steel pipe main keel system, it completely avoids the need to erect ground-based external operating scaffolds to reinforce the outer formwork of parapet walls in traditional processes, significantly saving the cost of materials such as steel pipes and fasteners, as well as the construction period for erecting and dismantling external scaffolds.
[0016] 2. This utility model uses tie rods to rigidly connect the steel truss floor slab with the timber secondary joists and double steel pipe main joists, and sets diagonal bracing steel pipes to connect the roof embedded parts for auxiliary support. At the same time, it uses the suspended formwork steel reinforcement bracket to strengthen key nodes, effectively resisting the lateral pressure of concrete pouring, and ensuring the overall stability of the formwork system and the forming quality of the parapet wall.
[0017] 3. The L-shaped edge steel plate, in conjunction with the steel truss floor slab, forms an effective seal at the base of the parapet wall to prevent leakage. This reinforcement structure eliminates the need for complex reinforcement measures on the outside of the parapet wall, allowing it to be cast synchronously with the roof slab in one go, significantly improving construction efficiency. Attached Figure Description
[0018] The present invention will now be described in further detail with reference to the accompanying drawings.
[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0020] Figure 2 This is a front view structural diagram of this utility model.
[0021] Attached Figure Descriptions: 1 - Steel structure edge beam, 2 - Edge steel plate, 3 - Steel truss floor slab, 4 - Roof slab, 5 - Floor slab reinforcement, 6 - Tie rod, 7 - Butterfly clip, 8 - Double steel pipe main keel, 9 - Timber secondary keel, 10 - Diagonal bracing steel pipe, 11 - Rebar head, 12 - Hanging formwork reinforcement support. Detailed Implementation
[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] Example 1:
[0024] See the examples. Figures 1 to 2 As shown, the present invention provides a steel structure factory parapet wall reinforcement structure without external scaffolding, including a steel structure side beam (1), the steel structure side beam (1) serving as the main connecting structure of the parapet wall, and a edging steel plate (2) fixedly connected to the upper left side of the steel structure side beam (1), the edging steel plate (2) being L-shaped with a specification of 5mm×50mm×100mm.
[0025] A steel truss floor slab (3) is vertically fixed on the right side of the edge steel plate (2). The steel truss floor slab (3) is TD6-140 with a specification of 5mm. Truss steel bars are provided on the steel truss floor slab (3). The upper right side of the steel structure side beam (1) is fixedly connected to the roof floor slab (4). Floor slab steel bars (5) are fixedly installed on the roof floor slab (4). Steel bar heads (11) are fixedly connected to the inner wall of the roof floor slab (4). A timber secondary keel (9) is fixedly installed on the right side of the steel truss floor slab (3). The cross-sectional specification of the timber secondary keel (9) is 40mm×80mm.
[0026] The upper part of the steel structure side beam (1) is fixedly installed with a suspended formwork steel reinforcement bracket (12). The lower end of the suspended formwork steel reinforcement bracket (12) is set on the inner wall of the roof floor slab (4), and the upper part of the suspended formwork steel reinforcement bracket (12) is set between the steel truss floor slab (3) and the timber secondary keel (9).
[0027] The tie rod (6) is welded to the truss reinforcement of the steel truss floor slab (3) on its left side. Multiple sets of butterfly clips (7) are fixedly installed on the outer side of the right side of the tie rod (6) by nuts. The outer side of the steel bar head (11) and the right side of the butterfly clip (7) are both fixedly installed with diagonal bracing steel pipes (10) by fasteners. Multiple sets of double steel pipe main keels (8) are clamped to the inner wall of the butterfly clip (7). The multiple sets of double steel pipe main keels (8) are spaced 600mm apart vertically.
[0028] The lower end of the steel truss floor slab (3) is fixedly connected to the upper side of the steel structure side beam (1). A conventional wooden template is provided between the steel truss floor slab (3) and the timber secondary keel (9). The tie rod (6) passes through the conventional wooden template and extends to the outside of the butterfly clip (7). The double steel pipe main keel (8) is attached to the right side of the timber secondary keel (9).
[0029] Example 2:
[0030] The steps for using this utility model are as follows:
[0031] Step 1: Weld and fix the L-shaped edge steel plate on the upper left side of the steel structure edge beam. Vertically fix the steel truss floor slab on the right side of the edge steel plate. Weld and fix the lower part of the steel truss floor slab to the upper side of the steel structure edge beam and the edge steel plate to form the support and formwork on the outside of the parapet wall. Install the roof floor slab on the upper right side of the steel structure edge beam and fix the floor slab reinforcement on its inner wall.
[0032] Step 2: Fix and install the secondary timber joists on the right side of the conventional timber formwork of the steel truss floor slab. Weld the left side of the tie rod to the truss reinforcement of the steel truss floor slab so that it passes through the conventional timber formwork. Fix and install multiple sets of butterfly clips on the outer right side of the tie rod with nuts, and attach multiple sets of double steel pipe main joists to the inner wall of the butterfly clips so that the double steel pipe main joists are tightly attached to the right side of the secondary timber joists.
[0033] Step 3: Fix the rebar head to the inner wall of the roof slab. Use fasteners to fix one end of the diagonal bracing steel pipe to the outside of the rebar head and the other end to the right side of the butterfly clip to form a diagonal support. Fix the hanging formwork rebar bracket to the upper part of the steel structure edge beam, so that its lower part is set on the inner wall of the roof slab and its upper part is set between the conventional wooden formwork and the secondary wooden joists of the steel truss floor slab.
[0034] Step 4: Using the steel truss floor slab as the outer formwork, along with the timber secondary joists and double steel pipe main joists, there is no need to erect a ground-based external operating scaffold. Concrete is poured in one go, so that the parapet wall and the roof floor slab are formed simultaneously. The base of the parapet wall is effectively sealed by the edge steel plate to prevent leakage.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A steel structure plant parapet free-frame reinforcing structure, characterized in that, include: A steel structure edge beam (1) serves as the main connecting structure of the parapet wall. A edging steel plate (2) is fixedly connected to the upper left side of the steel structure edge beam (1). A steel truss floor slab (3) is vertically fixedly installed on the right side of the edging steel plate (2). Truss reinforcement is provided on the steel truss floor slab (3). The upper right side of the steel structure edge beam (1) is fixedly connected to the roof floor slab (4). Floor slab reinforcement (5) is fixedly installed above the roof floor slab (4). A timber secondary keel (9) is fixedly installed on the right side of the steel truss floor slab (3). The tie rod (6) is welded to the truss reinforcement of the steel truss floor slab (3) on its left side. Multiple sets of butterfly clips (7) are fixedly installed on the outer side of the right side of the tie rod (6) by nuts. Multiple sets of double steel pipe main keels (8) are clamped to the inner wall of the butterfly clips (7).
2. The steel structure plant building parapet wall free-frame reinforcing structure according to claim 1, characterized in that: The lower end of the steel truss floor slab (3) is fixedly connected to the upper side of the steel structure side beam (1). A conventional wooden template is provided between the steel truss floor slab (3) and the timber secondary keel (9). The tie rod (6) passes through the conventional wooden template and extends to the outside of the butterfly clip (7). The double steel pipe main keel (8) is attached to the right side of the timber secondary keel (9).
3. The steel structure plant building parapet wall free scaffolding reinforcing structure according to claim 1, characterized in that: The inner wall of the roof slab (4) is fixedly connected with a steel bar head (11), and the outer side of the steel bar head (11) and the right side of the butterfly clip (7) are both fixedly installed with diagonal bracing steel pipes (10) by fasteners.
4. The steel structure plant building parapet wall free scaffolding reinforcing structure according to claim 1, characterized in that: The upper part of the steel structure side beam (1) is fixedly installed with a suspended formwork steel reinforcement bracket (12). The lower end of the suspended formwork steel reinforcement bracket (12) is set on the inner wall of the roof floor slab (4), and the upper part of the suspended formwork steel reinforcement bracket (12) is set between the steel truss floor slab (3) and the timber secondary keel (9).
5. The steel mill building parapet wall free scaffolding reinforcement structure according to claim 1, characterized in that: The edge-sealing steel plate (2) is set in an L shape with a specification of 5mm×50mm×100mm.
6. The steel mill building parapet wall free scaffolding reinforcement structure according to claim 1, characterized in that: The steel truss floor slab (3) is TD6-140 with a diameter of 5mm, and the tie rod (6) is M14.
7. The steel mill building parapet wall free scaffolding reinforcement structure according to claim 1, characterized in that: The cross-sectional dimensions of the secondary timber joists (9) are 40mm × 80mm.
8. The steel mill building parapet wall free scaffolding reinforcement structure according to claim 1, characterized in that: The upper and lower intervals of the multiple sets of double steel pipe main keels (8) are 600mm.