Large-span damping steel truss system

Abstract

The application belongs to the field of civil structure engineering, and particularly relates to a large-span damping steel truss system, which comprises a main body extending along a span direction in the preferred embodiment of the application, the main body comprising a truss structure, a bridge deck structure and a roof structure, the truss structure being vertically arranged and formed on both sides of the main body, the truss structure involving top chords, bottom chords, a plurality of rigidly connected vertical web members and hingedly connected vertical web members arranged at intervals along the span direction, and diagonal web members arranged along the span direction, the roof structure being formed on the top of the main body, the roof structure comprising a plurality of roof beams arranged along the span direction, and each of the roof beams being perpendicular to the span direction, and meanwhile, damping supports are arranged at the connection positions of the roof beams and the rigidly connected vertical web members in the same vertical plane, and the two ends of the damping supports are hingedly connected to the straight section of the roof beam and the straight section of the rigidly connected vertical web member respectively. The technical problem of low overall lateral stiffness and torsional stiffness of the large-span steel truss structure in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of civil structure engineering, and particularly relates to a large-span damping steel truss system. BACKGROUND

[0002] The steel truss structure has the advantages of light weight, good overall seismic performance, convenient on-site production and construction, simple maintenance, and high cost performance. With the continuous development of China's social economy and infrastructure, large-span steel truss structures are widely used in complex engineering projects and have produced good social and economic value. Large-span steel truss structures are mainly used in engineering buildings with a span of more than 60m, including large power plant projects, industrial plants, sports venues, airports, concert halls, etc., and effectively meet the inherent needs of modern society for engineering buildings.

[0003] Due to the small height-to-span ratio, small component section, and light structure weight, large-span steel truss structures often produce large vibration responses under the action of equipment operating live loads, wind loads, and crowd intensity earthquakes, resulting in poor structural comfort and affecting the normal use function of the structure.

[0004] In recent years, structural seismic control technology has developed rapidly. By adding an additional device to a certain part of the structure, the dynamic characteristics or dynamic action of the structure are adjusted to control the dynamic response (such as displacement, velocity, and acceleration) of the structure under the action of earthquakes within a reasonable range. Energy dissipation technology mainly adds energy dissipation devices or components to some parts of the structure to provide additional stiffness or damping to the structure. Under the action of wind load or earthquake, the energy dissipation components mainly dissipate the energy input to the structure to reduce the dynamic response of the structure, thereby better protecting the safety of the main structure and improving the safety and applicability of the overall structure.

[0005] In summary, a large-span damping steel truss system is proposed to increase the overall lateral stiffness and torsional stiffness of the truss, enhance the integrity of the structure, provide additional damping to the structure, reduce the vibration response of the structure under the action of equipment operating live loads, wind loads, and crowd intensity earthquakes, ensure the structural safety of the truss structure, and ensure the normal use function of the truss structure. SUMMARY

[0006] To solve the technical problem of low overall lateral stiffness and torsional stiffness of the large-span steel truss structure in the prior art, the present application provides a large-span damping steel truss system, which solves the above technical problems.

[0007] The technical solution adopted by the present application to solve its technical problems is:

[0008] This invention provides a large-span vibration-damping steel truss system, comprising a main body extending along the span direction. The main body includes: a truss structure, which is vertically arranged and forms both sides of the main body, the truss structure including multiple rigidly connected vertical web members arranged along the span direction; and a roof structure, which forms the top of the main body, with upper chord members arranged collinearly with the truss structure, the roof structure including multiple roof beams arranged along the span direction, each roof beam being perpendicular to the span direction of the main body. Simultaneously, within the same vertical plane, vibration-damping supports are arranged at the connection points between the roof beams and the rigidly connected vertical web members, the two ends of the vibration-damping supports being respectively hinged to the straight sections of the roof beams and the straight sections of the rigidly connected vertical web members.

[0009] Furthermore, the truss structure also includes multiple hinged vertical web members arranged along the span direction, with the hinged vertical web members and the rigid vertical web members arranged at intervals.

[0010] Furthermore, the truss structure also includes an oblique web member placed diagonally between adjacent hinged vertical web members and rigid vertical web members, with one end of the oblique web member hinged to the end of the hinged vertical web member and the other end of the oblique web member hinged to the end of the rigid vertical web member.

[0011] Furthermore, the rigid vertical web members at both ends of the truss structure are formed as end vertical members.

[0012] Furthermore, the roof structure also includes an upper chord horizontal support diagonally placed between two adjacent roof beams.

[0013] Furthermore, it also includes a bridge deck structure, which forms the bottom of the main body. A lower chord is arranged at the collinearity of the bridge deck structure and the truss structure. The bridge deck structure includes multiple bridge deck beams arranged along the span direction, and an obliquely placed lower chord horizontal support is arranged between two adjacent bridge deck beams.

[0014] Furthermore, the bridge deck structure also includes a steel secondary beam arranged parallel to the lower chord, with both ends of the steel secondary beam hinged to the beam bodies of two adjacent bridge deck beams.

[0015] Furthermore, a grating plate is laid on the steel secondary beam.

[0016] Furthermore, the vibration damping support is a viscous damper.

[0017] Based on the above technical solution, the technical effects that the present invention can achieve are as follows:

[0018] The vibration-damping supports of the large-span vibration-damping steel truss system of this application are arranged at the connection points between the roof beam and the rigidly connected vertical web members in the same vertical plane. The two ends of the vibration-damping supports are hinged to the straight sections of the roof beam and the rigidly connected vertical web members, respectively. Specifically, two vibration-damping supports are configured in the same vertical plane, located at the two connection corners between the roof beam and the rigidly connected vertical web members. This increases the lateral stiffness and torsional stiffness of the main structure, enhancing its overall integrity. When equipment operates under live loads, wind loads, and seismic loads, the main body of the steel truss system vibrates. The vibration-damping supports can dissipate the corresponding vibration energy, thereby reducing the vibration response of the structure, ensuring the safety of the main structure, and guaranteeing its normal functionality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main body of the large-span vibration-damping steel truss system of the present invention;

[0020] Figure 2 This is a schematic diagram of the truss structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the bridge deck structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the roof structure of the present invention;

[0023] Figure 5 This is a vertical schematic diagram of the end column of the present invention;

[0024] Figure 6 This is a schematic vertical view of the hinged vertical web member of the present invention;

[0025] Figure 7 This is a vertical schematic diagram of the section in the middle of the main body of the present invention where the vertical web member is just connected.

[0026] The structure includes: truss structure 1, bridge deck structure 2, roof structure 3, upper chord 7, lower chord 8, end vertical member 9, hinged vertical web member 10, rigid vertical web member 11, diagonal web member 12, bridge deck beam 13, steel secondary beam 14, lower chord horizontal support 15, roof beam 16, upper chord horizontal support 17, and vibration damping support 18. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0033] like Figures 1-7 As shown, the present invention provides a large-span vibration-damping steel truss system, including a main body extending along the span direction. The main body includes two sides formed by vertically arranged truss structures 1, a bottom formed by a bridge deck structure 2, and a top formed by a roof structure 3.

[0034] The truss structure 1 involves two upper chords 7 and two lower chords 8 extending along the span direction. Multiple vertical rigid web members 11 and hinged web members 10 are arranged along the span direction between the upper chords 7 and lower chords 8 on the same side. The rigid web members 11 and hinged web members 10 are spaced apart, and diagonal web members 12 are placed diagonally between adjacent rigid web members 11 and hinged web members 10. The rigid web members 11 at both ends of the truss structure 1 form end members 9. Specifically, on the same side of the main structure, the two ends of the rigid web members 11 are rigidly connected to the upper chords 7 and lower chords 8, respectively. The two ends of the hinged web members 10 are also hinged to the upper chords 7 and lower chords 8. One end of the diagonal web member 12 is hinged to the connection between the upper chord 7 and the rigid web member 11, and the other end of the diagonal web member 12 is hinged to the connection between the lower chord 8 and the hinged web member 10.

[0035] The roof structure 3 involves two parallel upper chords 7, with multiple roof beams 16 arranged between the two upper chords 7 along the span direction. An upper chord horizontal support 17 is placed diagonally between two adjacent roof beams 16. Specifically, the two ends of the roof beams 16 are respectively hinged to the corresponding two upper chords 7, and the two ends of the upper chord horizontal supports 17 are respectively hinged to the connection points between the corresponding roof beams 16 and the upper chords 7.

[0036] The bridge deck structure 2 involves two parallel lower chords 8. Multiple bridge deck beams 13 are arranged between the two lower chords 8 along the span direction. A lower chord horizontal support 15 is diagonally placed between two adjacent bridge deck beams 13. Simultaneously, multiple steel secondary beams 14 are arranged in a direction parallel to the lower chords 8. Two steel secondary beams 14 are arranged parallel to each other between two bridge deck beams 13, and a grating plate is laid on the steel secondary beams 14. Specifically, both ends of the bridge deck beams 13 are hinged to the corresponding two lower chords 8, both ends of the lower chord horizontal supports 15 are hinged to the connection points between the corresponding bridge deck beams 13 and the lower chords 8, and both ends of the steel secondary beams 14 are hinged to the corresponding bridge deck beams 13. A steel grating plate is laid on the top of the steel secondary beams 14, covering the entire upward-facing surface of the bridge deck structure 2.

[0037] Vibration damping supports 18 are arranged at the connection points between the roof beam 16 and the rigidly connected vertical web member 11 in the same vertical plane. The vibration damping supports 18 are preferably viscous dampers, with both ends hinged to the straight sections of the roof beam 16 and the rigidly connected vertical web member 11, respectively. Specifically, two vibration damping supports 18 are configured in the same vertical plane, positioned at the two connection corners between the roof beam 16 and the rigidly connected vertical web member 11. The entirety of a single vibration damping support 18, a section of the roof beam 16, and a section of the rigidly connected vertical web member 11 together form a triangle. When vibrations occur on the main body of the span damping steel truss system, the damping support 18 can form damping to counteract the force generated by the vibration, thereby increasing the lateral stiffness and torsional stiffness of the main body. At the same time, the damping support 18 forms a stable triangular structure between the corresponding roof beam 16 and the rigid vertical web member 11, enhancing the overall integrity of the main structure. In summary, the large-span damping steel truss system of this embodiment reduces the vibration response of the structure under equipment operation live load, wind load and modal intensity earthquake, ensuring the structural safety of the truss structure 1 and ensuring the normal use function of the truss structure 1.

[0038] In the specific construction, the preferred materials for the upper chord 7, lower chord 8, end vertical members 9, hinged vertical web members 10, rigid vertical web members 11, diagonal web members 12, bridge deck beam 13, steel secondary beam 14, lower chord horizontal support 15, roof beam 16, upper chord horizontal support 17, and grating are steel. The upper chord 7, lower chord 8, end vertical members 9, rigid vertical web members 11, bridge deck beam 13, steel secondary beam 14, and roof beam 16 can be made of I-beams, the hinged vertical web members 10 and diagonal web members 12 can be made of round steel pipes, and the lower chord horizontal support 15 and upper chord horizontal support 17 can be made of T-shaped steel or round steel pipes.

[0039] It should be understood that the specific embodiments described above are for illustrative purposes only and are not intended to limit the scope of the invention. Obvious variations or modifications derived from the explanations in this specification are still within the protection scope of this invention.

Claims

1. A large-span vibration-damping steel truss system, comprising a main body extending along the span direction, characterized in that, The subject includes: A truss structure (1) is arranged vertically and forms both sides of the main body. The truss structure (1) includes multiple rigid vertical web members (11) arranged along the span direction. The roof structure (3) forms the top of the main body. The roof structure (3) and the truss structure (1) are collinear with the upper chord (7). The roof structure (3) includes multiple roof beams (16) arranged along the span direction. Each roof beam (16) is perpendicular to the span direction. At the same time, in the same vertical plane, two vibration damping supports (18) are arranged at the connection between the roof beam (16) and the rigid vertical web member (11). The two ends of the vibration damping support (18) are respectively hinged to the straight section of the roof beam (16) and the straight section of the rigid vertical web member (11).

2. The large-span vibration-damping steel truss system according to claim 1, characterized in that, The truss structure (1) also includes multiple hinged vertical web members (10) arranged along the span direction, with the hinged vertical web members (10) and the rigid vertical web members (11) arranged at intervals.

3. The large-span vibration-damping steel truss system according to claim 2, characterized in that, The truss structure (1) further includes an oblique web member (12) placed diagonally between the adjacent hinged vertical web member (10) and the rigid vertical web member (11). One end of the oblique web member (12) is hinged to the end of the hinged vertical web member (10), and the other end of the oblique web member (12) is hinged to the end of the rigid vertical web member (11).

4. The large-span vibration-damping steel truss system according to claim 3, characterized in that, The rigid vertical web members (11) at both ends of the truss structure (1) are formed as end vertical members (9).

5. The large-span vibration-damping steel truss system according to claim 1, characterized in that, The roof structure (3) also includes an upper chord horizontal brace (17) that is diagonally placed between two adjacent roof beams (16).

6. The large-span vibration-damping steel truss system according to claim 1, characterized in that, It also includes a bridge deck structure (2), which forms the bottom of the main body. A lower chord (8) is arranged at the collinearity of the bridge deck structure (2) and the truss structure (1). The bridge deck structure (2) includes multiple bridge deck beams (13) arranged along the span direction. An oblique lower chord horizontal support (15) is arranged between two adjacent bridge deck beams (13).

7. A large-span vibration-damping steel truss system according to claim 6, characterized in that, The bridge deck structure (2) also includes a steel secondary beam (14) arranged parallel to the lower chord (8), with both ends of the steel secondary beam (14) hinged to the beam bodies of two adjacent bridge deck beams (13).

8. A large-span vibration-damping steel truss system according to claim 7, characterized in that, The steel secondary beam (14) is covered with a grating plate.

9. A large-span vibration-damping steel truss system according to claim 1, characterized in that, The vibration damping support (18) is a viscous damper.

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