Large-span inner arch overhanging type self-adaptive beam string structure light steel roof structure

Abstract

The utility model belongs to the technical field of steel truss roofs, and provides a large-span inner arch overhanging type self-adaptive beam string structure light steel roof structure which comprises a beam string structure, the beam string structure is provided with an upper chord steel beam and a lower chord arched beam which are connected in a welded mode, and a plurality of inter-beam vertical rods are welded between the upper chord steel beam and the lower chord arched beam. A plurality of supporting rods distributed at equal intervals are installed on the lower side of the lower chord arched beam, the lower ends of the supporting rods are connected with two high-strength steel cables through double-cable clamps, and the two ends of the high-strength steel cables are fixed to the two ends of the lower side of the lower chord arched beam through anchoring structures. Wireless frequency meters are installed on the outer sides of the two ends of the high-strength steel cable and are in signal connection with the remote monitoring terminal. According to the utility model, the self-adaptive performance is better, so that the anti-seismic performance and the stability of the structure are improved, and the safety and the reliability of the structure are enhanced; real-time monitoring and prediction of the beam string structure are achieved through the wireless frequency meter, and the operation efficiency of the structure in the whole life cycle and the operability of maintenance management are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel truss roofs, and in particular relates to a large-span inner-arch overhang type self-adaptive beam-string light steel roof structure. Background Art

[0002] The existing beam string structure has the following characteristics:

[0003] Lightweight and High-Strength: Beam-string structures utilize a combination of high-strength cables and rigid components, resulting in a relatively light structure with high rigidity and shape stability. This characteristic enables beam-string structures to span large spaces, making them suitable for long-span buildings.

[0004] High Flexibility: Beam string structures offer a high degree of design flexibility. They can adapt to varying loads and construction requirements by varying the tension and shape of the cables. This flexibility makes beam string structures suitable for a wide range of complex building designs.

[0005] Reasonable load bearing: Beam string structures offer superior load bearing performance, effectively distributing and transferring loads. For example, the tensioned arch form of beam string offers the most reasonable load bearing performance and is widely used in both practical engineering and theoretical research.

[0006] Wide application: Beam string structures have been widely used in places such as convention and exhibition centers, large-span gymnasiums, and platform column-free canopies at railway stations, and have achieved good results.

[0007] Traditional large-span steel truss roofs are heavy, waste a lot of materials, and are inflexible to install. While existing beam-string structures have advantages in terms of lightness, high strength, balance, convenience, flexibility, and reasonable load-bearing, they also have the following shortcomings:

[0008] 1) High maintenance cost: The beam string structure relies on a complex tensioning system during construction, which brings additional costs to the maintenance of the structure.

[0009] 2) High tension control requirements: The stability of the beam string structure directly depends on the tension of the steel cables, so precise tension control is required to ensure the stability and safety of the structure.

[0010] 3) Limited aesthetics: The design of beam-string structures is usually dominated by functionality. In some construction projects, in order to meet the requirements of consistency in the building appearance, more building coverings and decorations may be required, which will increase costs and construction difficulty. Utility Model Content

[0011] The purpose of the utility model is to overcome the existing defects and provide a large-span inner-arch cantilevered self-adaptive beam-string light steel roof structure.

[0012] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0013] A large-span, inward-arched, cantilevered, adaptive beam-string light steel roof structure includes a beam string, both ends of which are connected to supporting columns via purlins. The beam string is provided with a welded upper chord steel beam and a lower chord arch beam, and a plurality of inter-beam vertical bars are welded between the upper chord steel beam and the lower chord arch beam.

[0014] A plurality of equally spaced struts are fixedly installed on the lower side of the lower chord arch beam, and the lower ends of the struts are connected to two high-strength steel cables through double cable clamps. The two ends of the high-strength steel cables are fixed to the two ends of the lower side of the lower chord arch beam through anchor structures;

[0015] Wireless frequency meters are installed on the outer sides of both ends of the high-strength steel cable, and the wireless frequency meters are connected to the remote monitoring terminal signal.

[0016] Furthermore, the double-cable clamp is provided with a clamp seat and two sleeves, and strip grooves cooperating with the sleeves are respectively provided at both ends of the lower side of the clamp seat, and the high-strength steel cable passes through the strip grooves.

[0017] Furthermore, a fixing sleeve is movably installed in the middle of the upper end of the clamp seat, and the lower end of the support rod is installed on the inner side of the fixing sleeve.

[0018] Furthermore, the anchoring structure is provided with two fixed ear plate seats and an adjusting screw sleeve. The outer ends of the two fixed ear plate seats are respectively connected to the cable anchoring nodes on the lower side of the lower chord arch beam through pin shafts, the other end of one fixed ear plate seat is fixedly connected to the high-strength steel cable, and the other fixed ear plate seat is connected to the adjusting screw sleeve through a thread, and the other end of the adjusting screw sleeve is fixedly connected to the high-strength steel cable.

[0019] Furthermore, the lower side of the lower chord arch beam and the upper end of the support rod are respectively provided with ear plates that cooperate with each other, and a pin is installed between the two ear plates.

[0020] In combination with the above technical solutions, the beneficial effects of the present invention compared with the prior art are as follows:

[0021] This utility model has better adaptive performance. The upper bending-resistant steel beam and the lower tensile steel cable are connected by struts to form a self-balancing system. This structure can not only bear its own weight, but also withstand external additional loads as a whole after being assembled. It has high overall stiffness and shape stability, thereby improving the overall seismic resistance and stability.

[0022] The utility model installs and fixes wireless frequency meters at both ends of high-strength steel cables to detect the cable tension throughout its life cycle, thereby achieving real-time monitoring and prediction of the operating efficiency and maintenance management operability of the beam string structure throughout its life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a structural schematic diagram of a large-span, inward-arched, cantilevered, adaptive beam-string light steel roof structure provided by an embodiment of the present invention;

[0025] Figure 2 This is a schematic structural diagram of a double-cable clamp provided by an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the connection structure between the clamp seat and the jacket provided in an embodiment of the present utility model;

[0027] Figure 4 It is a structural schematic diagram of the anchoring structure provided by an embodiment of the present utility model;

[0028] Figure 5 This is a side structural diagram of the anchoring structure provided by an embodiment of the present utility model;

[0029] Figure 6 It is a structural schematic diagram of a cable anchoring node provided by an embodiment of the utility model.

[0030] In the figure: 1. Upper chord steel beam; 2. Lower chord arch beam; 3. Vertical rods between beams; 4. Struts; 5. High-strength steel cables; 6. Clamp seat; 7. Jacket; 8. Strip groove; 9. Fixing sleeve; 10. Fixed ear plate seat; 11. Adjusting screw sleeve; 12. Cable anchoring node; 13. Support column; 14. Wireless frequency meter. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0032] like Figure 1 The figure shows an embodiment of a large-span, inner-arch, cantilever, adaptive beam-string light steel roof structure provided by the present invention, comprising a beam string, the ends of which are connected to support columns 13 via purlins. The beam string is characterized in that the beam string is provided with an upper chord steel beam 1 and a lower chord arch beam 2 connected by welding, and a plurality of inter-beam vertical rods 3 are welded between the upper chord steel beam 1 and the lower chord arch beam 2; a plurality of equally spaced struts 4 are installed on the lower side of the lower chord arch beam 2, and the lower ends of the struts 4 are connected to two high-strength steel cables 5 via a double-cable clamp, and the ends of the high-strength steel cables 5 are fixed to the two ends of the lower side of the lower chord arch beam 2 via an anchor structure;

[0033] A wireless frequency meter 14 is installed on the outer sides of both ends of the high-strength steel cable 5, and the wireless frequency meter 14 is connected to the remote monitoring terminal signal.

[0034] Specifically, the present invention comprises a beam string and high-strength steel cables 5, which are suspended from the underside of the beam string via lower support rods 4. The beam string is welded together from an upper chord steel beam 1, a lower chord arch beam 2, and inter-beam vertical bars 3. Each beam is thicker at the ends and thinner in the middle. The high-strength steel cables 5 are connected to the cable end fixings at both ends of the lower chord arch beam. After all roof steel structures are installed, they are tensioned into shape using a prestressed cable device and then secured using an anchoring structure.

[0035] Roof dimensions: 198 meters in total length, 41-65 meters in width, trapezoidal in plan. Number of beam string beams: 33.

[0036] like Figure 2 and Figure 3 As shown, the double-cable clamp in the embodiment of the present invention is provided with a clamp seat 6 and two sleeves 7. The lower ends of the clamp seat 6 are respectively provided with strip grooves 8 that cooperate with the sleeves 7, and the high-strength steel cable 5 passes through the strip grooves 8.

[0037] Preferably, a fixing sleeve 9 is movably mounted in the middle of the upper end of the clamp seat 6 in the embodiment of the present utility model, and the lower end of the support rod 4 is mounted on the inner side of the fixing sleeve 9 .

[0038] like Figures 4 to 6 As shown, the anchoring structure in the embodiment of the present invention is provided with two fixed ear plate seats 10 and an adjusting screw sleeve 11. The outer ends of the two fixed ear plate seats 10 are respectively connected to the cable anchoring node 12 on the lower side of the lower chord arch beam 2 through a pin shaft, the other end of one fixed ear plate seat 10 is fixedly connected to the high-strength steel cable 5, and the other fixed ear plate seat 10 is connected to the adjusting screw sleeve 11 through a thread, and the other end of the adjusting screw sleeve 11 is fixedly connected to the high-strength steel cable 5.

[0039] Preferably, the lower side of the lower chord arch beam 2 and the upper end of the support rod 4 in the embodiment of the present invention are respectively provided with ear plates that cooperate with each other, and a pin is installed between the two ear plates.

[0040] The working principle of the present invention is as follows: when installing the present invention, the upper chord steel beam 1, the lower chord arch beam 2 and the vertical rods 3 between the beams are first welded into a finished structure of the tensioned beam. Then the finished tensioned beam and the hanging support rod 4 are installed, and then the high-strength steel cable 5 is installed. The high-strength steel cable 5 is suspended on the belly of the tensioned beam through the hanging support rod 4, and the two ends are connected to the two ends of the lower chord arch beam 2. After all the roof steel structures are installed, they are tensioned into shape using a prestressed cable device, and then fixed using an anchoring structure. Before the cables are tensioned, the main steel structure should be fully installed and closed into a whole. Each cable is tensioned into place synchronously using two jacks in parallel. The tensioning tooling and equipment include: jacks, oil pressure gauges, oil pumps, oil pipes, tensioning screws, reaction frames, etc.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A large-span, inward-arched, cantilevered, self-adaptive beam-string light steel roof structure, comprising a beam string, both ends of which are connected to supporting columns via purlins, characterized in that: The beam string is provided with an upper chord steel beam and a lower chord arch beam connected by welding, and a plurality of inter-beam vertical rods are welded between the upper chord steel beam and the lower chord arch beam; A plurality of equally spaced struts are fixedly installed on the lower side of the lower chord arch beam, and the lower ends of the struts are connected to two high-strength steel cables through double cable clamps. The two ends of the high-strength steel cables are fixed to the two ends of the lower side of the lower chord arch beam through anchor structures; Wireless frequency meters are installed on the outer sides of both ends of the high-strength steel cable, and the wireless frequency meters are connected to the remote monitoring terminal signal.

2. The large-span inward-arched cantilevered self-adaptive beam-string light steel roof structure according to claim 1 is characterized in that The double-cable clamp is provided with a clamp seat and two sleeves. The two ends of the lower side of the clamp seat are respectively provided with strip grooves that cooperate with the sleeves, and the high-strength steel cable passes through the strip grooves.

3. The large-span inward-arched cantilevered adaptive beam-string light steel roof structure according to claim 2 is characterized in that A fixed sleeve is movably installed in the middle of the upper end of the clamp seat, and the lower end of the support rod is installed on the inner side of the fixed sleeve.

4. The large-span inward-arched cantilevered adaptive beam-string light steel roof structure according to claim 1 is characterized in that The anchoring structure is provided with two fixed ear plate seats and adjusting screw sleeves. The outer ends of the two fixed ear plate seats are respectively connected to the cable anchoring nodes on the lower side of the lower chord arch beam through pin shafts. The other end of one fixed ear plate seat is fixedly connected to the high-strength steel cable, and the other fixed ear plate seat is connected to the adjusting screw sleeve through a thread. The other end of the adjusting screw sleeve is fixedly connected to the high-strength steel cable.

5. The large-span inward-arched cantilevered adaptive beam-string light steel roof structure according to claim 1 is characterized in that The lower side of the lower chord arch beam and the upper end of the support rod are respectively provided with ear plates that cooperate with each other, and a pin shaft is installed between the two ear plates.

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