Large-span combined roof structure system

Abstract

The utility model relates to the field of building structures, in particular to a large-span combined roof structure system which comprises a single-layer latticed shell structure and frame supporting structures arranged on the two sides of the single-layer latticed shell structure, and the bottoms of the two sides of the single-layer latticed shell structure are connected with the tops of the frame supporting structures. The frame supporting structure comprises a frame and an inclined supporting column arranged in the frame and used for supporting. Compared with the prior art, the large-span roof has the advantages of a large-span roof and a conventional floor system, and the problem of load limitation of the large-span roof is solved.

Description

Technical Field

[0001] The utility model relates to the field of building structures, in particular to a large-span combined roof structure system. Background Art

[0002] In recent years, domestic large-span spatial structures have developed rapidly, and a large number of novel and innovative structural forms have emerged, especially large-span single-layer lattice shell structures. However, due to its mechanical properties, single-layer lattice shells have relatively stringent requirements on structural conditions: 1) the shape must meet the appropriate span-rise ratio (generally not less than 1 / 8); 2) the boundary support conditions must have sufficient support stiffness. These two requirements have limited the development of single-layer lattice shell structures to a certain extent. Utility Model Content

[0003] The purpose of the utility model is to provide an improved structural form in order to overcome the defects of the above-mentioned prior art. The structural system combines the advantages of the frame support structure and the single-layer lattice shell structure to realize a large-span single-layer lattice shell structure under weak boundary conditions. After being tested in actual engineering projects, the structural system has a reliable architecture, strong stability and high adaptability, which provides more possibilities for architectural creation.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A large-span composite roof structure system, comprising: a single-layer lattice shell structure and a frame support structure arranged on both sides of the single-layer lattice shell structure.

[0006] The bottoms of both sides of the single-layer lattice shell structure are connected to the top of the frame support structure.

[0007] The frame support structure comprises a frame and an inclined support arranged inside the frame for supporting.

[0008] Furthermore, the system also includes a Y-shaped support column, which is supported below the single-layer lattice shell structure.

[0009] Furthermore, a plurality of Y-shaped supporting columns are symmetrically arranged.

[0010] Furthermore, the Y-shaped support column is a steel support column.

[0011] Furthermore, the frame support structure setting method includes a single span.

[0012] Furthermore, the diagonal support setting method includes an X-shaped or a herringbone setting.

[0013] Furthermore, the frame support structure is arranged in multiple rows in parallel and connected to the bottoms of both sides of the single-layer lattice shell structure.

[0014] Furthermore, the system also includes a C-shaped ground-standing grid shell supported in the center of the single-layer grid shell structure.

[0015] Furthermore, the single-layer lattice shell structure is a steel lattice shell or an aluminum alloy lattice shell.

[0016] Furthermore, in the frame support structure, the frame is a steel frame, and the inclined supports are steel supports or damping supports.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] (1) Achieve super-large space span, with the maximum span of the structure reaching 100m;

[0019] (2) Compared with conventional single-layer lattice shell structures, the restrictions on the structural span ratio are relaxed;

[0020] (3) Combined structural form, which converts the thrust of the lattice shell edge into the axial force of the frame column, reducing the impact on the lower structure;

[0021] (4) It combines the advantages of large-span roof and conventional floor, solves the load limitation problem of large-span roof, and provides accessible space and space for rooftop equipment placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural cross-section diagram of a large-span combined roof structure system of the utility model;

[0023] Figure 2 It is a schematic diagram of the structural force section of a large-span combined roof structure system of the utility model;

[0024] Figure 3 A schematic structural cross-sectional diagram of a large-span composite roof structure system is provided for Example 2;

[0025] Figure 4 An axonometric diagram of a large-span composite roof structure system is provided for Example 2;

[0026] The numbers in the figure show:

[0027] 1. Frame support structure, 2. Single-layer lattice shell structure, 2-1. Aluminum alloy single-layer lattice shell structure, 3. Frame, 4. Oblique support, 5. Y-shaped supporting column, 6. C-shaped ground-standing lattice shell. DETAILED DESCRIPTION

[0028] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] This embodiment provides a large-span composite roof structure system. Figure 1 As shown, the system includes:

[0031] The single-layer lattice shell structure 2 and the frame support structure 1 arranged on both sides of the single-layer lattice shell structure 2, in this embodiment, also include a Y-shaped support column 5 supported below the single-layer lattice shell structure 2, wherein the bottoms of both sides of the single-layer lattice shell structure 2 are connected to the top of the frame support structure 1,

[0032] In this embodiment, the single-layer lattice shell structure 2 uses the diagonal bracing of the frame support structure 1 to achieve the continuity of the lattice shell space force transmission, and the span ratio of the lattice shell is 1 / L 1 Increase to actual (h 1 +h 2 ) / (L 1 +2L 0 ),like Figure 2 As shown, the frame support structure has good lateral stiffness. Through the conversion of the frame support structure 1, the support stiffness of the lattice shell is improved and the requirements for the lower structure are reduced.

[0033] Example 2

[0034] This embodiment provides an actual building application of the above roof combination structure system, such as the comprehensive transportation center of a large airport in Gansu. Figure 3 , 4 As shown, the atrium adopts a single-layer grid shell structure, with single-span roofs on both sides that can be walked on. The span of the single-layer grid shell is 100m, the rise height is 13m, the rise-span ratio is 1 / 7.8, and the single-span roofs on both sides have a span of 9m and a floor height of 6m.

[0035] Support: By using the single-span frame support structure 1 on both sides, the actual span ratio of the gridshell is increased to 1 / 6.2, which greatly improves the stress of the gridshell structure. At the same time, 8 Y-shaped support columns 5 are set along both sides of the single-layer gridshell structure 2, and a C-shaped ground gridshell 6 is set in combination with the photoelectric display screen to provide elastic support for the single-layer gridshell structure 2, further improving the rigidity of the gridshell structure. In order to reduce the load in the middle of the gridshell structure, the structural rod material in the middle part is changed from steel to aluminum alloy, that is, the rigid single-layer gridshell structure is changed to an aluminum alloy single-layer gridshell structure 2-1, optimizing the roof structure, reducing the deformation in the middle of the structure span and the stress of the frames on both sides.

[0036] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A large-span composite roof structure system, characterized in that: The system comprises: a single-layer lattice shell structure (2) and a frame support structure (1) arranged on both sides of the single-layer lattice shell structure (2). The bottoms of both sides of the single-layer lattice shell structure (2) are connected to the top of the frame support structure (1). The frame support structure (1) comprises a frame (3) and an inclined support (4) arranged inside the frame (3) for support.

2. The large-span composite roof structure system according to claim 1 is characterized in that: The system further comprises a Y-shaped support column (5), wherein the Y-shaped support column (5) is supported below the single-layer lattice shell structure (2).

3. The large-span composite roof structure system according to claim 2 is characterized in that: A plurality of Y-shaped supporting columns (5) are symmetrically arranged.

4. The large-span composite roof structure system according to claim 3 is characterized in that: The Y-shaped support column (5) is a steel support column.

5. The large-span composite roof structure system according to claim 1 is characterized in that: The frame support structure (1) is configured in a single span.

6. The large-span composite roof structure system according to claim 1 is characterized in that: The diagonal support (4) can be set in an X-shaped or herringbone shape.

7. The large-span composite roof structure system according to claim 1 is characterized in that: The frame support structure (1) is arranged in multiple rows in parallel and is commonly connected to the bottoms of both sides of the single-layer lattice shell structure (2).

8. The large-span composite roof structure system according to claim 1 is characterized in that: The system also includes a C-shaped ground-standing grid shell (6) supported in the center of the single-layer grid shell structure (2).

9. The large-span composite roof structure system according to claim 1, characterized in that: The single-layer lattice shell structure (2) is a steel lattice shell or an aluminum alloy lattice shell.

10. The large-span composite roof structure system according to claim 1, characterized in that: In the frame support structure (1), the frame (3) is a steel frame, and the inclined support (4) is a steel support or a damping support.

Images