A spring-suspended circular bridleway system suitable for flexible cable net roofs

Abstract

The present invention relates to the field of construction engineering technology, and in particular to a spring-suspended circular horseway system suitable for a flexible cable net roof. The horseway system comprises: a circular horseway, a hanging frame structure, a rigid hanger, a sling and a spring node; the circular horseway is provided with a hanging frame structure arranged radially at its segment; the hanging frame structure comprises: a door-type hanging frame and a main crossbeam provided at the bottom of the door-type hanging frame, and a rigid hanger is hinged on both sides of the main crossbeam; a sling is hinged on both sides of the upper part of the door-type hanging frame; the upper end of the sling is hinged with the rigid hanger on the same side. By applying this structural system, the overall structure of the horseway has appropriate stability while ensuring that the horseway structure will not deform in coordination with the overall structure due to the large local deformation of the main cable net structure of the roof.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to a spring-suspended annular horseway system suitable for a flexible cable net roof. Background Art

[0002] When a stadium uses steel trusses or steel grids, the horseway used to place roof equipment such as field lighting equipment, stand lighting equipment, speakers, antennas, etc. can be directly connected to the grid nodes or even the grid rods. Due to the high rigidity of the roof structure, the horseway can be designed and calculated as a secondary structure, and the structural system is simple and clear. In recent years, with the increase in the span of stadiums (halls), and the improvement of the lighting and aesthetic requirements inside the stadiums (halls), the lightweight roof structure composed of cable nets has become more and more popular due to its simple and light architectural appearance and large spanning capacity, and is widely used in newly built large-span stadiums (halls). However, the cable net structure has low rigidity and is greatly deformed under external forces such as wind loads. Therefore, higher requirements are placed on the design of the horseway substructure, which is reflected in the following aspects:

[0003] 1. Stability of the horse trail: Combination Fig.10 As shown in the figure, for the circular horse track structure suspended under the cable structure, its stability is mainly reflected in two aspects: radial stability (stability in the direction parallel to the radial horse track B on the roof) and circumferential stability (stability in the direction parallel to the circumferential horse track A on the roof). The circumferential stability is not difficult to solve because the horse track is circular. As for radial stability, since the horse tracks of large stadiums are generally equipped with heavy lighting equipment and audio equipment, these equipment are likely to be concentrated on one side of the horse track, refer to Fig.11 As shown, the live load F is concentrated on one side, and the bridleway is tilted radially. Therefore, sufficient radial structure is required to ensure that the bridleway does not tilt significantly under non-uniform loads, affecting the safety of personnel and the use of the bridleway. In order to ensure the radial stability of the suspended bridleway, the present application provides a suspended circular bridleway system with a door-shaped hanging frame structure.

[0004] 2. Deformation capacity of the bridleway: When the cable net structure has local radial deformation, the ability of the circular bridleway to adapt to this radial deformation becomes particularly important. For a bridleway structure with a circular or quasi-circular plane layout and a plane truss composed of an inner main beam and an outer main beam, its overall radial deformation capacity is equal to the circumferential deformation capacity of the inner chord main beam and the outer chord main beam. Fig.12As shown in the figure. When the main structure has a local radial relative deformation caused by external load, the circular horseway needs to adapt to this radial deformation through the circumferential deformation capacity of its inner and outer main beams, where F pull represents the outer main beam under tension, and F pressure represents the inner main beam under compression. However, it is difficult to achieve this goal with the horseway structure nodes designed by traditional systems and construction measures. The node form commonly used to provide deformation capacity in traditional horseway system design is the oblong hole pin shaft, and the displacement constraint along the direction of the pin shaft ear plate is released by the sliding of the pin shaft in the oblong hole. However, in actual application, it is not practical to design the oblong hole to be very large, and the deformation of a single oblong hole pin shaft node is very limited. When the deformation capacity exceeds the sliding amount of the oblong hole pin shaft, the horseway begins to deform in coordination with the cable net structure, and a large extrusion or bending (radial displacement S) occurs on the horseway truss structure, causing a sharp increase in the tensile pressure of the inner and outer main beams of the local horseway, affecting safety.

[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide a spring-suspended circular horseway system suitable for a flexible cable net roof, wherein the circular horseway system ensures the radial stability of the horseway through two rigid hangers and two suspension cables, and ensures that the horseway will not tilt significantly under non-uniform loads. At the same time, a spring-supported horseway node method is proposed, which reduces the influence of the cable net structure deformation on the horseway force by adding springs at the nodes between the annular segments of the horseway.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides a spring-suspended circular horseway system suitable for a flexible cable net roof, comprising: a circular horseway, a hanging frame structure, a rigid hanging rod and a hanging cable; the circular horseway is provided with a hanging frame structure arranged radially at its segment; the hanging frame structure comprises: a door-type hanging frame and a main crossbeam arranged at the bottom of the door-type hanging frame, and a rigid hanging rod is hinged on both sides of the main crossbeam; a hanging cable is hinged on both sides of the upper part of the door-type hanging frame; the upper end of the hanging cable is hinged to the rigid hanging rod on the same side thereof.

[0009] As a further technical solution, a segmen t structure of the horseway is formed between the two hanging frame structures.

[0010] As a further technical solution, the horseway segmented structure is composed of two horseway main beams, and a horseway secondary beam perpendicular to the horseway main beams is arranged in a plane between the horseway main beams, and a diagonal brace is arranged in a plane between the horseway main beams and the horseway secondary beams.

[0011] As a further technical solution, a cantilever beam is extended outward from the secondary beam position of the horseway, and a diagonal brace is added between the end of the cantilever beam and the upper chord of the handrail.

[0012] As a further technical solution, connecting ear plates for hinged connection with rigid hangers are respectively arranged on both sides of the main crossbeam; two groups of vertical pin shaft ear plates are arranged above the upper flange of the main crossbeam, and each group of the pin shaft ear plates has three ear plates with pin shaft holes which are respectively perpendicular to the direction of the main crossbeam, and two through slots are formed between the three ear plates, and the shaft holes of the ear plates are of normal standard pin shaft hole size; the horseway main beam is provided with a first vertical cross plate and a second vertical cross plate, the first vertical cross plate is located at the end face position of the horseway main beam, and the second vertical cross plate is located at the rear and lower position of the horseway main beam, the first vertical cross plate is connected to a vertical ear plate with an oblong pin shaft hole, and the horseway main beam is cross-inserted into each slot from both sides of each group of the pin shaft ear plates through the vertical ear plates, and each group of the pin shaft ear plates is connected to the corresponding inserted vertical ear plates through the pin shaft; the second vertical cross plate is connected to the main crossbeam through a horizontally arranged elastic component.

[0013] As a further technical solution, the two groups of vertical pin shaft ear plates are symmetrically distributed at both ends of the main beam.

[0014] As a further technical solution, the center of the pin holes of each group of the pin lugs is located directly above the center line of the main beam.

[0015] As a further technical solution, the elastic component is a spring structure, one end of the spring structure is connected to the second vertical cross plate, and the other end of the spring structure is connected to the main cross beam.

[0016] As a further technical solution, the center of the spring structure is consistent with the height center of the main beam.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects:

[0018] 1. The portal hanging frame of the horse track can well ensure the stability of the horse track under asymmetric loads.

[0019] 2. The oblong hole pin node with spring greatly improves the ability of the overall walkway to adapt to large local deformation of the roof main cable structure.

[0020] 3. Compared with the connection node design of the traditional horse track structure, the present invention adopts a reasonable structural layout and node construction, which has the advantages of clearer node force performance, overall force of the circular horse track, and better overall structural stability.

[0021] Fourth, the deformation performance of the connection node of the bridleway structure of the present invention can be controlled by adjusting the horizontal stiffness of the spring, which has the advantages of more controllable deformation performance and greater deformation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A structural schematic diagram of a hanging frame structure provided by an embodiment of the present invention;

[0024] Figure 2 An elevation view of a hanging frame structure provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of a bridleway segment structure provided by an embodiment of the present invention;

[0026] Figure 4 An elevation view of a segmented structure of a bridleway provided by an embodiment of the present invention;

[0027] Figure 5 A plan view of a segmented structure of a bridleway provided by an embodiment of the present invention;

[0028] Figure 6 An exploded diagram of a connection node provided by an embodiment of the present invention;

[0029] Figure 7 A three-dimensional diagram of a connection node assembly provided by an embodiment of the present invention;

[0030] Figure 8 for Figure 7 A side view of the connection node shown;

[0031] Fig. 9 for Figure 7 A top view of the connection node shown;

[0032] Fig.10 A schematic diagram of the radial and circumferential directions of the structure provided by an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of an asymmetric load in the background technology provided by an embodiment of the present invention;

[0034] Fig.12 A schematic diagram of the relationship between structural displacement and structural force in the background technology provided in an embodiment of the present invention.

[0035] Icons: 1-main crossbeam; 2-horseway main beam; 3-vertical ear plate; 4-spring; 5-pin shaft; 6-first vertical cross plate; 7-pin shaft ear plate; 8-second vertical cross plate; 9-vertical plate stiffening rib; 10-handrail upper chord; 11-rigid hanger; 12-sling; 13-door-type hanging frame; 15-ear plate; 16-horseway main beam connection node; 18-horseway secondary beam; 19-diagonal brace; 21-horseway handrail diagonal brace; 22-handrail upright. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0040] This embodiment provides a spring-suspended circular horseway system suitable for a flexible cable net roof.

[0041] Combination Figures 1 to 9As shown, the horseway system includes: a circular horseway, a hanging frame structure, a rigid hanger 11 and a sling 12; a hanging frame structure arranged radially is provided at the segment of the circular horseway (in actual engineering applications, the circular horseway is generally divided into segments to fit a circular plane); the hanging frame structure includes: a door-type hanging frame 13 and a main crossbeam 1 arranged at the bottom of the door-type hanging frame 13, and a rigid hanger 11 is hinged on both sides of the main crossbeam 1 (preferably, the rigid hanger 11 is a rigid circular tube, which is arranged on the left and right sides of the main beam at the bottom of the hanging frame, and the other end of the hanger is an ear plate 15 connected to the node of the main cable structure, and the two ends of the rigid circular tube use pin nodes to release bending moments); a sling 12 is hinged on both sides of the upper part of the door-type hanging frame 13; the upper end of the sling 12 is hinged between the rigid hanger 11 on the same side. When the horseway structure is subjected to loads that are unevenly arranged in the radial direction, the two rigid circular tubes, the two slings 12 and the hanging frame can ensure the stability of the horseway structure in the radial direction. When Figure 2 When there is a vertical downward load on the left side of the structure shown, and no load on the right side, the rigid circular tube on the left side of the bridleway is pulled, the left sling 12 will stop working, the rigid circular tube on the right side is compressed, and the right sling 12 is pulled. Figure 2 When there is a vertical downward load on the right side of the structure shown, and no load on the left side, the rigid round tube on the right side of the bridleway is pulled, the right sling 12 will stop working, the rigid round tube on the left side is compressed, and the left sling 12 is pulled. In this way, at any time, at least two rigid round tubes and one sling 12 are stressed to ensure the stability of the hanging frame in the horizontal direction.

[0042] It can be understood that, as a further technical solution, a horseway segment structure is formed between the two hanging frame structures (both ends of the inner and outer main horseway beams are connected to the main crossbeam 1 of the hanging frame structure).

[0043] Specifically, the horseway segment structure is composed of two horseway main beams 2, and a horseway secondary beam 18 perpendicular to the horseway main beams 2 is arranged in plane, and a diagonal brace 19 is arranged in plane between the horseway main beam 2 and the horseway secondary beam 18 to ensure the plane stability of each horseway segment structure. Each horseway segment structure is arranged between two hanging frames, and both ends of the inner and outer main horseway beams are connected to the main crossbeam 1 at the bottom of the hanging frame. The handrail of the horseway (handrail upright 12) and the horseway main beam 2 form a truss to bear the force together. A cantilever beam is extended outward from the position of the horseway secondary beam 18, and a horseway handrail diagonal brace 21 is added between the end of the cantilever beam and the handrail upper chord 10 to form a triangle to ensure the stability of the handrail upper chord 10 outside the handrail plane.

[0044] For each bridleway segment structure, since the deformation movement of the two door-shaped hanging frame structures on both sides is almost consistent with the main cable net structure of the roof, when the main roof structure has a large local deformation, the door-shaped hanging frames on both sides of the bridleway segment below the local deformation position may move in the following ways:

[0045] (1) There is a difference in the vertical deformation of the door-shaped hanging frames on both sides;

[0046] (2) The door-shaped hanging frames on both sides have deformation differences along the circumferential direction (i.e. along the main beam direction of the bridleway segmented structure);

[0047] (3) The door-shaped hanging frames on both sides have deformation differences in the radial direction (i.e., perpendicular to the main beam direction of the bridle segment structure);

[0048] (4) Combination of two of the three aforementioned exercise modes;

[0049] (5) The three aforementioned movement modes occur simultaneously.

[0050] The deformation capacity of the traditional oblong hole pin connection node is limited and cannot adapt to the larger deformation of the roof.

[0051] Considering this problem, the present application changes the connection mode between each bridle segment structure and the hanging frame from the traditional oblong hole pin connection node to an oblong hole pin connection node with a spring (bridle main beam connection node 16). This node can greatly improve the circumferential deformation capacity of the bridle, ensure that the bridle structure is not subjected to force in coordination with the main roof structure, and provide a restoring force for the bridle structure to return to the initial geometric position after deformation.

[0052] Specifically, connecting ear plates for hinged connection with the rigid suspension rod are respectively provided on both sides of the main cross beam;

[0053] The main crossbeam 1 is provided with two groups of vertical pin shaft ear plates 7 above the upper flange, and each group of pin shaft ear plates 7 has three ear plates with pin shaft holes which are respectively perpendicular to the direction of the main crossbeam 1, and two through slots are formed between the three ear plates. The main crossbeam 1 is perpendicular to the direction of the horseway. Preferably, the two groups of vertical pin shaft ear plates 7 are symmetrically distributed at both ends of the main crossbeam 1, and the axial hole openings of the ear plates are of normal standard pin shaft hole size. The center of the pin shaft hole of each group of pin shaft ear plates 7 is located directly above the center line of the main crossbeam 1. In this way, it can be ensured that when unbalanced or asymmetric loads appear on the horseways on both sides of the main crossbeam 1, the resultant force on the main crossbeam 1 still acts on the center of the beam, reducing or avoiding the torsion of the main crossbeam 1 caused by the asymmetric load.

[0054] The main beam 2 of the horseway needs to be connected with two groups of vertical pin lugs 7 on the main cross beam 1. The cross section of the main beam 2 of the horseway can be I-shaped, box-shaped or round tube-shaped. Correspondingly, the main beam 2 of the horseway is provided with a first vertical cross plate 6 and a second vertical cross plate 8. The first vertical cross plate 6 is located at the end face position of the main beam 2 of the horseway (the main beam 2 of the horseway is disconnected by the first vertical cross plate 6 near the node position, and is converted through this first vertical cross plate 6). The first vertical cross plate 6 is connected with a vertical lug 3 with an oblong pin hole. The main beam 2 of the horseway is inserted into each slot from both sides of each group of pin lugs 7 through the vertical lugs 3. Each group of pin lugs 7 is connected to the corresponding vertical lug 3 through the pin 5, forming an oblong hole pin node that allows the horseway beam to slide along its length.

[0055] The second vertical cross plate 8 of the horseway main beam 2 is located at the rear lower position of the horseway main beam 2 (a cross plate extending to the bottom of the horseway beam can be arranged behind the vertical plate that disconnects the horseway beam mentioned above), and the second vertical cross plate 8 is connected to the main cross beam 1 through a horizontally arranged elastic component (the main cross beam 1 is provided with a connecting baffle below each group of pin lugs 7, and the connecting baffle is connected to the end of the spring 4 structure), and a vertical plate stiffening rib 9 is arranged on the rear side of the second vertical cross plate 8 of the horseway main beam 2. Preferably, the elastic component is a spring 4 structure, one end of the spring 4 structure is connected to the second vertical cross plate 8, and the other end of the spring 4 structure is connected to the main cross beam 1. According to the local deformation that may occur in the actual main structure, the deformation of the spring 4 under a certain spring 4 stiffness can be obtained by modeling and calculation, and then according to this spring 4 deformation and the allowable sliding amount of the actual node size, the most suitable spring 4 stiffness can be obtained through repeated trial and error.

[0056] Compared with the traditional bridleway structure system, the present invention has the following characteristics and beneficial effects:

[0057] 1) The portal frame of the horseway can well ensure the stability of the horseway under asymmetric loads.

[0058] 2) The oblong hole pin node with spring greatly improves the ability of the overall walkway to adapt to large local deformation of the roof main cable structure.

[0059] 3) Compared with the connection node design of the traditional horse track structure, the present invention adopts a reasonable structural arrangement and node construction, which has the advantages of clearer node force performance, overall force of the circular horse track, and better overall structural stability.

[0060] 4) The deformation performance of the connection node of the bridleway structure provided in this embodiment can be controlled by adjusting the horizontal stiffness of the spring, which has the advantages of more controllable deformation performance and greater deformation capacity.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spring-suspended circular bridleway system suitable for a flexible cable net roof, characterized in that: include: Circular horse tracks, hanging frame structures, rigid hanging rods and slings; The circular horseway is provided with a radially arranged hanging frame structure at its segment; the hanging frame structure comprises: a door-shaped hanging frame and a main crossbeam provided at the bottom of the door-shaped hanging frame, and a rigid hanging rod is hingedly connected to both sides of the main crossbeam; a sling is hingedly connected to both sides of the upper part of the door-shaped hanging frame; the upper end of the sling is hingedly connected to the rigid hanging rod on the same side; A bridleway segment structure is formed between the two hanging frame structures; The bridleway segmented structure is composed of two bridleway main beams, a bridleway secondary beam perpendicular to the bridleway main beams is arranged in a plane between the bridleway main beams, and a diagonal brace is arranged in a plane between the bridleway main beam and the bridleway secondary beam; A cantilever beam is extended outward from the secondary beam of the horseway, and a diagonal brace is added between the end of the cantilever beam and the upper chord of the handrail; The two sides of the main beam are respectively provided with connecting ear plates for being hinged with the rigid hanger; the main beam is provided with two groups of vertical pin shaft ear plates above the upper flange, and each group of the pin shaft ear plates has three ear plates with pin shaft holes which are respectively perpendicular to the direction of the main beam, and two through slots are formed between the three ear plates; the horseway main beam is provided with a first vertical cross plate and a second vertical cross plate, the first vertical cross plate is located at the end face position of the horseway main beam, and the second vertical cross plate is located at the rear and lower position of the horseway main beam, the first vertical cross plate is connected to a vertical ear plate with an oblong pin shaft hole, and the horseway main beam is cross-inserted into each slot from both sides of each group of the pin shaft ear plates through the vertical ear plates, and each group of the pin shaft ear plates and the corresponding inserted vertical ear plates are connected by pin shafts; the second vertical cross plate is connected to the main beam through a horizontally arranged elastic component.

2. The spring-suspended circular horseway system suitable for the flexible cable net roof according to claim 1, characterized in that: The two groups of vertical pin shaft ear plates are symmetrically distributed at two ends of the main cross beam.

3. The spring-suspended circular horseway system suitable for the flexible cable net roof according to claim 1, characterized in that: The center of the pin shaft hole of each group of the pin shaft ear plates is located directly above the center line of the main beam.

4. The spring-suspended circular horseway system suitable for flexible cable net roof according to claim 1, characterized in that: The elastic component is a spring structure, one end of the spring structure is connected to the second vertical cross plate, and the other end of the spring structure is connected to the main cross beam.

5. The spring-suspended circular horseway system suitable for the flexible cable net roof according to claim 4, characterized in that: The center of the spring structure is consistent with the height center of the main beam.

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