Formwork-free construction system for steel structure roof gutter

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Through the combined outer plate, inner plate and bottom plate forming a gutter casting space, the problem of the excessive cost of building materials and complex construction of the gutter support form on the steel structure roof is solved, efficient construction and stable connection are achieved, and the construction progress and the bearing capacity of the cantilever beam are improved.

CN223151649UActive Publication Date: 2025-07-25CHINA CONSTR FIRST BUILDING (GRP) CORP LTD +1

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Patent Information

Application Number: CN202422444348.1
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-10-10
Publication Date: 2025-07-25
Estimated Expiration: 2034-10-10

AI Technical Summary

Technical Problem

The formwork support process of steel structure roof gutters consumes a lot of building materials and is complex in construction, which affects the construction progress.

Method used

The gutter casting space is formed by combining the outer plate, the inner plate, the inner formwork and the bottom plate. There is no need to set up a support structure, and the reinforcement and support are combined with oblique braces, support columns and support beams. The outer plate and bottom plate of unit module combination are used to improve the lifting efficiency.

Benefits of technology

It improves construction efficiency, shortens the construction period of gutters, enhances connection stability, improves the bearing capacity of cantilever beams, and facilitates the construction of bottom insulation structure and exterior wall panels.

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Abstract

The utility model discloses a steel structure roof gutter formwork-erecting-free construction system, which belongs to the technical field of building gutter construction and comprises a roof structure, brackets, cantilever beams, stand columns, a bottom plate, an outer side plate, an inner side plate, an inner formwork, supporting columns and supporting beams. The bracket is fixedly arranged on the side part of the roof structure; the supporting columns are vertically arranged and fixedly connected with a roof structure. The supporting beam is arranged at the top of the supporting column; the cantilever beams are arranged on the supporting beams at intervals and comprise main beams and secondary beams, and the inner ends of the main beams are fixedly connected with the brackets; the stand columns are fixedly arranged at the outer ends of the cantilever beams. The bottom plate is arranged on the cantilever beam; the outer side plates are fixedly connected with the stand columns. The bottom end of the inner side plate is fixedly connected with the inner end of the cantilever beam; and the inner template is arranged corresponding to the outer side plate and the inner side plate. The outer side plate, the bottom plate, the inner side plate and the inner formwork are jointly combined to form a gutter pouring space, a supporting structure does not need to be erected, and construction efficiency is improved; and by adopting the outer side plate and the bottom plate which are combined by unit modules, the field hoisting efficiency is improved.

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Description

Technical Field

[0001] The utility model belongs to the technical field of building gutter construction, and particularly relates to a formwork-free construction system for steel structure roof gutters. Background Art

[0002] Due to its light structure and fast construction, the steel structure roof is widely used in various large-span building structures. The concrete gutter of the steel structure roof is a cantilever member and is located at the top of the structure with a relatively large height. Currently, formwork support is generally carried out by erecting scaffolding from the first floor or using steel section cantilever scaffolding. The construction volume of erecting scaffolding from the first floor is large, consuming a lot of building materials, and the erection speed is slow, which cannot guarantee the construction period. The steel section cantilever scaffolding requires more support members and is complex to install, affecting the construction progress. Content of the Utility Model

[0003] The purpose of the utility model is to provide a formwork-free construction system for steel structure roof gutters to solve the problems of high building material consumption, complex construction, and affecting progress in the formwork support of the gutters of the steel structure roof in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A formwork-free construction system for steel structure roof gutters includes a roof structure, a corbel, a cantilever beam, a column, a bottom plate, an outer plate, an inner plate, an inner formwork, a support column, and a support beam; the corbel is fixedly arranged on the side of the roof structure; the support column is vertically arranged and fixedly connected with the roof structure; the support beam is arranged on the top of the support column; the cantilever beams are arranged on the support beam at intervals and include a main beam and a secondary beam, and the inner end of the main beam is fixedly connected with the corbel; the column is fixedly arranged at the outer end of the cantilever beam; the bottom plate is arranged on the cantilever beam; the outer plate is fixedly connected with the column; the bottom end of the inner plate is fixedly connected with the inner end of the cantilever beam, and the top end is connected with the roof structure; the inner formwork is arranged corresponding to the outer plate and the inner plate.

[0006] Further, the roof structure includes a concrete column, a steel structure column, and a roof panel; the steel structure column is arranged on the concrete column, and a structural beam is arranged between adjacent steel structure columns; the roof panel is arranged above the steel structure column and the structural beam.

[0007] Further, a diagonal brace is arranged at the bottom of the cantilever beam, the top end of the diagonal brace is welded to the outer end of the cantilever beam, and the bottom end is welded to the roof structure.

[0008] Further, the bottom plate is composed of bottom plate units, and the bottom plate units are fixedly connected to two adjacent cantilever beams by stud bolts.

[0009] Further, the bottom plate unit is a steel bar truss floor slab, and its bottom surface is flush with the bottom surface of the cantilever beam.

[0010] Furthermore, the outer plate is composed of outer plate units, and the outer plate units are fixedly connected to two adjacent columns.

[0011] Furthermore, a reinforcing member is provided on the outer side of the column. The reinforcing member is an angle steel structure arranged horizontally, and three such angle steel structures are arranged at intervals from top to bottom.

[0012] Furthermore, a sealing angle steel is provided at the bottom of the column. One side of the sealing angle steel is welded to the column, and the other side is welded to the cantilever beam.

[0013] Furthermore, the cross-section of the inner plate is an inverted L shape, including a horizontal plate and a vertical plate; the inner end of the horizontal plate is connected to the steel structure column and is flush with the bottom of the roof panel; the vertical plate is fixedly connected to the cantilever beam.

[0014] Furthermore, a reinforcing member is provided on the side of the inner plate away from the casting surface, and the reinforcing members are respectively arranged corresponding to the bottom of the vertical plate, the corner position, and the end of the horizontal plate.

[0015] The utility model has the following beneficial effects:

[0016] 1. For a steel structure roof gutter formwork-free construction system provided by the utility model, the outer plate, the bottom plate, the inner plate, and the inner formwork jointly form a gutter casting space, eliminating the need for erecting a support structure, improving the construction efficiency, and shortening the construction period of the gutter.

[0017] 2. For a steel structure roof gutter formwork-free construction system provided by the utility model, the unit module combined outer plate and bottom plate are adopted, improving the on-site hoisting efficiency and the connection stability.

[0018] 3. For a steel structure roof gutter formwork-free construction system provided by the utility model, the bottom of the bottom plate is flush with the bottom surface of the cantilever beam, facilitating the construction of the bottom thermal insulation structure and the exterior wall panel.

[0019] 4. For a steel structure roof gutter formwork-free construction system provided by the utility model, the cantilever beam is reinforced and supported by the cooperation of the diagonal brace, the support column, and the support beam, improving the bearing capacity of the cantilever beam. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the construction system related to the utility model;

[0021] Figure 2 is a schematic distribution diagram of the cantilever beam related to the utility model.

[0022] In the figure: 1 - Roof structure, 2 - Concrete column, 3 - Steel structure column, 4 - Roof panel, 5 - Bracket, 6 - Cantilever beam, 7 - Column, 8 - Bottom plate, 9 - Outer plate, 10 - Inner plate, 11 - Support column, 12 - Support beam, 13 - Reinforcement, 14 - Angle steel for sealing corner. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0024] As Figure 1 , 2 shown, a construction system for a steel structure roof gutter without formwork support provided by the present utility model includes a roof structure 1, a bracket 5, a cantilever beam 6, a column 7, a bottom plate 8, an outer plate 9, an inner plate 10, an inner formwork, a support column 11, and a support beam 12; the bracket 5 is fixedly arranged on the side of the roof structure 1; the support column 11 is vertically arranged and fixedly connected to the roof structure 1; the support beam 12 is arranged on the top of the support column 11 and arranged along the extension direction of the gutter; the cantilever beams 6 are arranged at intervals on the support beam 12, and the length direction thereof is perpendicular to the extension direction of the gutter. The cantilever beam 6 includes a main beam and a secondary beam. The inner end of the main beam is fixedly connected to the bracket 5, thereby realizing the connection with the roof structure 1, and the secondary beam is fixedly connected to the support beam 12; the column 7 is fixedly arranged at the outer end of the cantilever beam 6; the bottom plate 8 is arranged on the cantilever beam 6; the outer plate 9 is fixedly connected to the column 7; the bottom end of the inner plate 10 is fixedly connected to the inner end of the cantilever beam 6, and the top end is connected to the roof structure 1; the inner formwork is arranged corresponding to the outer plate 9 and the inner plate 10, and the inner formwork, the outer plate 9, the inner plate 10, and the bottom plate 8 jointly form a pouring space.

[0025] The roof structure 1 includes a concrete column 2, a steel structure column 3, and a roof panel 4; the steel structure column 3 is arranged on the concrete column 2, and a structural beam is arranged between adjacent steel structure columns 3; the roof panel 4 is arranged above the steel structure column 3 and the structural beam. The steel structure column 3 is a box column.

[0026] The bracket 5 is welded and connected to the steel structure column 3; the cantilever beam 6 is fixedly connected to the bracket 5 through high-strength bolts.

[0027] The cantilever beam 6, the column 7, and the support beam 12 can all adopt H-shaped steel or I-shaped steel, and the spacing of the cantilever beams 6 is 1.8 m - 2.25 m. An inclined brace is arranged at the bottom of the cantilever beam 6. The top end of the inclined brace is welded and connected to the outer end of the cantilever beam 6, and the bottom end is welded and connected to the roof structure 1.

[0028] The bottom plate 8 is composed of bottom plate units, and the bottom plate units are fixedly connected to two adjacent cantilever beams 6 by stud bolts. The bottom plate units are steel bar truss floor slabs, and their bottom surfaces are flush with the bottom surfaces of the cantilever beams 6.

[0029] The outer plate 9 is composed of outer plate units, and the outer plate units are fixedly connected to two adjacent columns 7. Both the bottom plate units and the outer plate units are prefabricated in the factory according to the size of the gutter.

[0030] Reinforcing members 13 are arranged on the outer sides of the columns 7. The reinforcing members 13 are angle steel structures arranged horizontally, and three layers of angle steel structures are arranged at intervals from top to bottom to enhance the structural strength of the outer plate 9. A sealing angle steel 14 is arranged at the bottom of the column 7. One side of the sealing angle steel 14 is welded to the column 7, and the other side is welded to the cantilever beam 6 to ensure the stable connection between the column 7 and the cantilever beam 6.

[0031] The inner plate 10 has an inverted L-shaped cross-section, including a horizontal plate and a vertical plate. The inner end of the horizontal plate is connected to the steel structure column 3 and is flush with the bottom of the roof panel 4, so that the gutter and the roof panel 4 are connected in a coordinated manner; the vertical plate is fixedly connected to the cantilever beam 6. Reinforcing members 13 are arranged on the side of the inner plate 10 away from the pouring surface, and the reinforcing members 13 are respectively arranged corresponding to the bottom of the vertical plate, the position of the internal corner, and the end of the horizontal plate.

[0032] The inner formwork is fixedly connected to the outer plate 9 and the inner plate 10 respectively by tie bolts. The inner formwork can adopt wooden formwork or steel formwork.

[0033] The support columns 11 are arranged on the concrete columns 2 located outside the steel structure columns 3. Embedded parts are arranged on the concrete columns 2 corresponding to the support columns 11, and the support columns 11 are fixedly connected to the embedded parts. The support columns 11 can adopt square steel or H-shaped steel.

[0034] A construction method of a steel structure roof gutter formwork-free construction system includes the following steps:

[0035] S1. Determine the sizes of the cantilever beams 6 and the columns 7 according to the size of the gutter, and process and manufacture them;

[0036] S2. Connect the cantilever beams 6 and the columns 7 one by one to form a unit framework;

[0037] S3. According to the outer contour size of the gutter, design the layout position of the unit framework to make as many unit frameworks as possible evenly distributed, which is convenient for the manufacture of the bottom plate units and the outer plate units;

[0038] S4. Process and manufacture the bottom plate units and the outer plate units according to the layout spacing of the unit framework. At the same time, process and manufacture the inner plate 10 and the inner formwork according to the size of the gutter;

[0039] S5. Transport the processed and formed components to the construction site;

[0040] S6. Install the support column and the support beam 12 on the concrete column 2 in sequence;

[0041] S7. Weld the corbel 5 on the steel structure column 3, then hoist the unit frame and connect the unit frame with the corbel 5 by bolts. After that, install the diagonal brace;

[0042] S8. Install the closing angle steel 14 and weld the closing angle steel 14 to the column 7 and the cantilever beam 6 for fixation;

[0043] S9. Lay the bottom plate 8 and fix the bottom plate unit on the cantilever by stud welding;

[0044] S10. Install the outer plate 9, weld the outer plate 9 to the column 7, then install the reinforcement 13 located outside the column 7 and weld the reinforcement 13 to the column 7 for fixation;

[0045] S11. Install the inner plate 10, weld one end of the inner plate 10 to the steel structure column 3 and the other end to the cantilever beam 6;

[0046] S12. Bind the gutter steel bars and install the inner formwork;

[0047] S13. Pour the gutter concrete. After pouring and forming, remove the inner formwork.

[0048] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A construction system for the gutter of a steel structure roof without formwork support, characterized in that: It includes a roof structure (1), a corbel (5), a cantilever beam (6), a column (7), a bottom plate (8), an outer side plate (9), an inner side plate (10), an inner formwork, a support column (11), and a support beam (12); the corbel (5) is fixedly arranged on the side of the roof structure (1); the support column (11) is vertically arranged and fixedly connected to the roof structure (1); the support beam (12) is arranged on the top of the support column (11); the cantilever beams (6) are arranged at intervals on the support beam (12), including a main beam and a secondary beam, and the inner end of the main beam is fixedly connected to the corbel (5); the column (7) is fixedly arranged at the outer end of the cantilever beam (6); the bottom plate (8) is arranged on the cantilever beam (6); the outer side plate (9) is fixedly connected to the column (7); the bottom end of the inner side plate (10) is fixedly connected to the inner end of the cantilever beam (6), and the top end is connected to the roof structure (1); the inner formwork is arranged corresponding to the outer side plate (9) and the inner side plate (10).

2. The construction system for the steel structure roof gutter without formwork support according to claim 1 is characterized in that: The roof structure (1) includes a concrete column (2), a steel structure column (3), and a roof slab (4); the steel structure column (3) is arranged on the concrete column (2), and a structural beam is arranged between adjacent steel structure columns (3); the roof slab (4) is arranged above the steel structure column (3) and the structural beam.

3. The construction system for the steel structure roof gutter without formwork support according to claim 1, characterized in that: A diagonal brace is arranged at the bottom of the cantilever beam (6), the top end of the diagonal brace is welded to the outer end of the cantilever beam (6), and the bottom end is welded to the roof structure (1).

4. A steel structure roof gutter formwork-free construction system according to claim 1, characterized in that: The bottom plate (8) is composed of bottom plate units, and the bottom plate units are fixedly connected to two adjacent cantilever beams (6) by stud bolts.

5. A steel structure roof gutter formwork-free construction system according to claim 4, characterized in that: The bottom plate unit is a steel bar truss floor slab, and its bottom surface is flush with the bottom surface of the cantilever beam (6).

6. The construction system for the steel structure roof gutter without formwork support according to claim 1, characterized in that: The outer side plate (9) is composed of outer side plate units, and the outer side plate units are fixedly connected to two adjacent columns (7).

7. A steel structure roof gutter formwork-free construction system according to claim 1, characterized in that: Reinforcement members (13) are arranged on the outer side of the column (7), the reinforcement members (13) are angle steel structures arranged horizontally, and three such angle steel structures are arranged at intervals from top to bottom.

8. The construction system for the steel structure roof gutter without formwork support according to claim 1 is characterized in that: Sealing angle steel (14) is arranged at the bottom of the column (7), one side of the sealing angle steel (14) is welded to the column (7), and the other side is welded to the cantilever beam (6).

9. A steel structure roof gutter formwork-free construction system according to claim 2, characterized in that: The cross-section of the inner side plate (10) is an inverted L shape, including a horizontal plate and a vertical plate; the inner end of the horizontal plate is connected to the steel structure column (3) and is flush with the bottom of the roof slab (4); the vertical plate is fixedly connected to the cantilever beam (6).

10. A steel structure roof gutter formwork-free construction system according to claim 9, characterized in that: Reinforcement members (13) are arranged on the side of the inner side plate (10) away from the casting surface, and the reinforcement members (13) are arranged corresponding to the bottom of the vertical plate, the position of the internal corner, and the end of the horizontal plate respectively.