阅读说明：本技术 一种三环索的轮辐式索桁架结构体系 (Spoke type cable truss structure system of three-ring cable ) 是由 邓旭洋 朱忠义 白光波 张琳 王玮 陈一 王毅 梁宸宇 于 2021-07-07 设计创作，主要内容包括：本发明涉及建筑工程技术领域,尤其是涉及一种三环索的轮辐式索桁架结构体系,包括：外圈索桁架结构和内圈索桁架结构；所述外圈索桁架结构包括：外边界、上环索、下环索、外圈上径向索、外圈下径向索、主撑杆、以及介于外圈上径向索、外圈下径向索之间的外圈撑杆或外圈吊索；所述内圈索桁架结构包括内环索,内圈上径向索,内圈下径向索,以及介于内圈上下径向索之间的内圈撑杆或内圈吊索。内圈索桁架结构中,内环索位于屋顶中间区域,围合形成屋顶开口形状。外圈索桁架结构与内圈索桁架结构一起构成了本发明提供的三环索的轮辐式索桁架结构体系。(The invention relates to the technical field of constructional engineering, in particular to a spoke type cable truss structure system of a three-ring cable, which comprises: an outer ring cable truss structure and an inner ring cable truss structure; the outer ring cable truss structure includes: the outer boundary, the upper ring cable, the lower ring cable, the outer ring upper radial cable, the outer ring lower radial cable, the main support rod and the outer ring support rod or the outer ring sling which is arranged between the outer ring upper radial cable and the outer ring lower radial cable; the inner ring cable truss structure comprises an inner ring cable, an inner ring upper radial cable, an inner ring lower radial cable and an inner ring stay bar or an inner ring sling which is arranged between the inner ring upper radial cable and the inner ring lower radial cable. In the inner ring cable truss structure, the inner ring cable is positioned in the middle area of a roof and is enclosed to form a roof opening shape. The outer ring cable truss structure and the inner ring cable truss structure form a spoke type cable truss structure system of the three-ring cable provided by the invention together.)

1. A spoke-type cable truss structural system of a three-ring cable, comprising: an outer ring cable truss structure and an inner ring cable truss structure;

the outer ring cable truss structure is provided with an outer ring cable truss, an upper ring cable, a lower ring cable and an outer boundary which are arranged in a spoke manner;

the inner ring cable truss structure is provided with an inner ring cable truss and an inner ring cable which are arranged in a spoke manner; the inner ring cable is positioned in the middle area of the roof and is enclosed to form a roof opening shape, and the inner ring cable is connected with the upper ring cable and the lower ring cable through inner ring cable trusses respectively.

2. The spoked cable truss architecture of claim 1 wherein the outer ring truss in a spoked arrangement comprises: the outer ring comprises an upper outer ring radial cable, a lower outer ring radial cable, a main support rod and an outer ring support rod or an outer ring sling which is arranged between the upper outer ring radial cable and the lower outer ring radial cable;

one end of the radial cable on the outer ring is connected with the outer boundary, and the other end of the radial cable on the outer ring is connected with the upper ring cable through a node;

one end of the outer ring lower radial cable is connected with the outer boundary, and the other end of the outer ring lower radial cable is connected with the lower ring cable through a node;

the main supporting rod is positioned between the upper ring cable and the lower ring cable and used for expanding the upper ring cable and the lower ring cable to form a structural height;

the outer ring stay bar or the outer ring sling is arranged between the outer ring upper radial cable and the outer ring lower radial cable, so that the outer ring upper radial cable and the outer ring lower radial cable form curvature.

3. The spoke-type cable truss structure system of claim 1, wherein the spoke-type inner ring cable truss comprises inner ring upper radial cables, inner ring lower radial cables, and inner ring struts or inner ring slings between the inner ring upper radial cables and the inner ring lower radial cables;

the inner end of the radial cable on the inner ring is connected with the inner ring cable through a node, and the outer end of the radial cable on the inner ring is connected to the upper ring cable node of the outer ring cable truss structure;

the inner end of the inner ring lower radial cable is connected with the inner ring cable through a node, and the outer end of the inner ring lower radial cable is connected to a lower ring cable node of the outer ring cable truss structure;

the inner ring stay bar or the inner ring sling is arranged between the inner ring upper radial cable and the inner ring lower radial cable, so that the inner ring upper radial cable and the inner ring lower radial cable form curvature.

4. The radial cable truss architecture of claim 1 wherein the radial cables on the inner ring and the radial cables on the outer ring intersect at the same point on the upper ring cables, and the radial cables on the inner ring and the radial cables on the outer ring intersect at the same point on the lower ring cables.

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a spoke type cable truss structure system of a three-ring cable.

Background

At present, the spoke type cable truss structure has a simple and light building appearance and excellent spanning capacity, and is widely applied to roof structures of large-scale sports buildings. The basic constitutional units of the structure are an upper ring cable and a lower ring cable inside, a pressure ring beam or a pressure ring truss outside, and a cable truss connecting the ring cables and the pressure ring. With the increasing of the specifications of domestic sports building stadiums in recent years, the number of audiences is increasing, the area of the stand is increasing, and the coverage and the span of the roof structure are increasing.

In order to meet the requirements, the span of the spoke type cable truss structure is increased through the following two ways:

one way is to install a steel structural cantilever at the end of the cable structure, as shown in fig. 1, comprising: roof structure 1, roof supporting structure 2, stand structure 3, roof packway 4 and steel construction outrigger 5 to realize bigger coverage area, but adopt the mode of steel construction outrigger, structural member is great, and weight is heavier. And need carry out the installation of steel construction outrigger alone again after the stretch-draw of cable structure is accomplished, the construction degree of difficulty is big, the cycle is long, the risk is high.

Another way is to increase the span of the cable trusses directly, but this way involves a departure between the building function and the structural performance. The traditional cable truss structure system has the characteristics that the rigidity of the ring cable position is good, the deformation is small, but the rigidity of the cable truss span position is relatively small, and the deformation is large. Therefore, for concentrated heavy loads such as a pavement and equipment which need to be arranged on a roof, the stress performance of the structure arranged near the ring cable with better rigidity is more reasonable. However, as can be seen from fig. 2, the position of the circular cable is relatively close to the center of the court and is far away from the spectators at the middle part and the rear part of the stand, the effect of the lighting and acoustic devices arranged at the circular cable is difficult to meet the functional requirements of the professional court, a fairway needs to be additionally arranged in the cable truss span with low rigidity to meet the requirements of installing the lighting and acoustic devices, the structural deformation of the cable truss is increased, the structure and the fairway connection structure are complex, and the construction difficulty is increased.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide a spoke type cable truss structure system of a three-ring cable, which aims to solve the technical problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a spoke type cable truss structure system of a three-ring cable, which comprises: an outer ring cable truss structure and an inner ring cable truss structure; the outer ring cable truss structure is provided with an outer ring cable truss, an upper ring cable, a lower ring cable and an outer boundary which are arranged in a spoke manner; the inner ring cable truss structure is provided with an inner ring cable truss and an inner ring cable which are arranged in a spoke manner; the inner ring cable is positioned in the middle area of the roof and is enclosed to form a roof opening shape, and the inner ring cable is connected with the upper ring cable and the lower ring cable through inner ring cable trusses respectively.

Preferably, the outer ring lattice in a spoke arrangement comprises: the outer ring comprises an upper outer ring radial cable, a lower outer ring radial cable, a main support rod and an outer ring support rod or an outer ring sling which is arranged between the upper outer ring radial cable and the lower outer ring radial cable; one end of the radial cable on the outer ring is connected with the outer boundary, and the other end of the radial cable on the outer ring is connected with the upper ring cable through a node; one end of the outer ring lower radial cable is connected with the outer boundary, and the other end of the outer ring lower radial cable is connected with the lower ring cable through a node; the main supporting rod is positioned between the upper ring cable and the lower ring cable and used for expanding the upper ring cable and the lower ring cable to form a structural height; the outer ring stay bar or the outer ring sling is arranged between the outer ring upper radial cable and the outer ring lower radial cable, so that the outer ring upper radial cable and the outer ring lower radial cable form curvature.

Preferably, the inner ring cable truss arranged in a spoke manner comprises inner ring upper radial cables, inner ring lower radial cables and inner ring stay bars or inner ring suspension cables between the inner ring upper radial cables and the inner ring lower radial cables; the inner end of the radial cable on the inner ring is connected with the inner ring cable through a node, and the outer end of the radial cable on the inner ring is connected to the upper ring cable node of the outer ring cable truss structure; the inner end of the inner ring lower radial cable is connected with the inner ring cable through a node, and the outer end of the inner ring lower radial cable is connected to a lower ring cable node of the outer ring cable truss structure; the inner ring stay bar or the inner ring sling is arranged between the inner ring upper radial cable and the inner ring lower radial cable, so that the inner ring upper radial cable and the inner ring lower radial cable form curvature.

Preferably, the radial cables on the inner ring and the radial cables on the outer ring intersect at the same point on the upper ring cable. And the inner ring lower radial cables and the outer ring lower radial cables intersect at the same point on the lower ring cables.

By adopting the technical scheme, the invention has the following beneficial effects:

1. the structure of the present invention can realize a larger spanning capability without increasing the thickness of the structure.

2. The structural system can reduce the displacement of the mid-span position of the cable truss and improve the structural rigidity.

3. The double-layer ring cable has the advantages that the structural rigidity of the position of the double-layer ring cable is high, the deformation is small, the position is closer to the middle part of the audience stand at the lower part, the equipment arranged at the position has a wider coverage area, and the lighting and acoustic equipment can be intensively arranged on a circle of carriageway, so that the coordination and unification of the building function and the structural stress performance are realized. Meanwhile, the number of roof streets is reduced, the construction procedures and period are reduced, and the construction cost is reduced.

4. Even if two circles of corridors still need to be arranged for unavoidable reasons, the maximum displacement value of the structural system under the gravity load is smaller than that of a spoke type cable truss structure adopting double-ring cables and having the same span, and the design of the corridors is facilitated.

5. Compared with the mode of installing the steel structure cantilever on the end part of the cable truss, the invention has lighter weight and smaller structural member size. And can accomplish the installation of whole roof structure through once promoting, stretch-draw, construction convenience is showing and is improving, and construction cycle shortens by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of the structure of a stadium in which steel-structure carports are added to the ends of a cable structure in the prior art.

Fig. 2 is a schematic structural diagram of a stadium in a spoke type cable truss structure using double ring cables in the prior art.

FIG. 3 is an isometric view of a spoke-type cable truss structure embodiment of the invention in the form of a three-ring cable.

Fig. 4 is an elevation view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 5 is a typical cross-sectional view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 6 is a three-dimensional partial view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 7 is a plan view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 8 is an exploded view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 9 is an exploded detail view of a spoke-type cable truss structure of a three-ring cable according to an embodiment of the invention.

Fig. 10 is a schematic structural diagram of a cable truss structure of a three-ring cable according to an embodiment of the present invention.

FIG. 11 is a two-axis view of an embodiment of a spoke-like cable truss structure for a triple-hoop cable of the present invention.

Fig. 12 is an elevation view of a spoke-type cable truss structure of a third ring cable according to a second embodiment of the present invention.

Fig. 13 is a typical cross-sectional view of a spoke-type cable truss structure of a three-ring cable according to a second embodiment of the invention.

Fig. 14 is a three-dimensional partial view of a spoke-type cable truss structure of a third ring cable according to a second embodiment of the invention.

Fig. 15 is a plan view of a spoke-type cable truss structure of a third ring cable according to a second embodiment of the invention.

Fig. 16 is an exploded view of a spoke-type cable truss structure of a third ring cable according to a second embodiment of the present invention.

Fig. 17 is an exploded detail view of a spoke-type cable truss structure of a third ring cable according to a second embodiment of the present invention.

FIG. 18 is a three-axis view of an embodiment of the spoke-like cable truss structure of the present invention.

Fig. 19 is an elevation view of a spoke-type cable truss structure of a third ring cable according to a third embodiment of the invention.

Fig. 20 is a typical cross-sectional view of a spoke-type cable truss structure of a three-ring cable provided in the third embodiment of the invention.

Fig. 21 is a three-dimensional partial view of a spoke-type cable truss structure of a three-ring cable according to a third embodiment of the invention.

Fig. 22 is a plan view of a spoke-type cable truss structure of a three-ring cable provided in the third embodiment of the invention.

Fig. 23 is an exploded view of a spoke-type cable truss structure of a three-ring cable according to a third embodiment of the present invention.

Fig. 24 is an exploded detail view of a spoke-type cable truss structure of a three-ring cable according to a third embodiment of the present invention.

FIG. 25 is a four-axis view of an embodiment of the triple-hoop spoke cable truss construction of the present invention.

Fig. 26 is an elevation view of a spoke-type cable truss structure of a three-ring cable according to the fourth embodiment of the invention.

Fig. 27 is a typical cross-sectional view of a spoke-type cable truss structure of a three-ring cable according to the fourth embodiment of the invention.

Fig. 28 is a three-dimensional partial view of a spoke-type cable truss structure of a three-ring cable according to the fourth embodiment of the invention.

Fig. 29 is a plan view of a spoke-type cable truss structure of a three-ring cable according to a fourth embodiment of the invention.

Fig. 30 is an exploded view of a spoke-type cable truss structure of a three-ring cable according to the fourth embodiment of the present invention.

Fig. 31 is an exploded view of the spoke type cable truss structure of the third ring cable according to the fourth embodiment of the present invention.

Icon: the structure comprises a roof structure 1, a roof supporting structure 2, a stand structure 3, a roof berm 4, a steel structural canopy 5, an upper ring cable 6, a lower ring cable 7, an inner ring cable 8, an inner ring cable truss structure 9, an outer ring cable truss structure 10, an outer boundary 11, a main stay bar 12, an outer ring lower radial cable 13, an outer ring upper radial cable 14, an inner ring upper radial cable 15, an inner ring lower radial cable 16, an outer ring stay bar 101, an inner ring sling 102, an outer ring sling 201 and an inner ring stay bar 202.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Example one

Referring to fig. 3 to 10, the present invention provides a spoke type cable truss structure system of a three-ring cable, which includes: an outer ring cable truss structure 10 and an inner ring cable truss structure 9. Preferably, the outer ring truss structure 10 includes: the outer boundary 11, the upper ring cable 6, the lower ring cable 7, the outer ring upper radial cable 14, the outer ring lower radial cable 13, the main supporting rod 12 and the outer ring supporting rod 101 between the outer ring upper radial cable 14 and the outer ring lower radial cable 13; one end of the radial cable 14 on the outer ring is connected with the outer boundary 11, and the other end is connected with the upper ring cable 6 through a node; one end of the outer ring lower radial cable 13 is connected with the outer boundary 11, and the other end of the outer ring lower radial cable is connected with the lower ring cable 7 through a node; the main supporting rod 12 is positioned between the upper ring cable 6 and the lower ring cable 7 and used for expanding the upper ring cable 6 and the lower ring cable 7 to form a structural height; the outer ring stay 101 is arranged between the outer ring upper radial cables 14 and the outer ring lower radial cables 13, so that the outer ring upper radial cables 14 and the outer ring lower radial cables 13 form curvature. Preferably, the inner ring cable truss structure 9 comprises an inner ring cable 8, an inner ring upper radial cable 15, an inner ring lower radial cable 16 and an inner ring sling 102 between the inner ring upper radial cable 15 and the inner ring lower radial cable 16; the inner ends of the radial cables 15 on the inner ring are connected with the inner ring cables 8 through nodes, and the outer ends of the radial cables are connected to the nodes of the upper ring cables 6 of the outer ring cable truss structure; the inner end of the inner ring lower radial cable 16 is connected with the inner ring cable 8 through a node, and the outer end of the inner ring lower radial cable is connected to the node of the lower ring cable 7 of the outer ring cable truss framework; the inner ring sling 102 is arranged between the inner ring upper radial rope 15 and the inner ring lower radial rope 16, so that the inner ring upper radial rope 15 and the inner ring lower radial rope 16 form a curvature. Preferably, the radial cables 15 on the inner ring and the radial cables 14 on the outer ring intersect at the same point on the upper ring cable 6. The inner ring lower radial cables 16 and the outer ring lower radial cables 13 intersect at the same point on the lower ring cables 7.

The structure of the present invention can realize a larger spanning capability without increasing the thickness of the structure. The structural system can reduce the displacement of the mid-span position of the cable truss and improve the structural rigidity. The double-layer ring cable has the advantages that the structural rigidity of the position of the double-layer ring cable is high, the deformation is small, the position is closer to the middle part of the audience stand at the lower part, the equipment arranged at the position has a wider coverage area, and the lighting and acoustic equipment can be intensively arranged on a circle of carriageway, so that the coordination and unification of the building function and the structural stress performance are realized. Meanwhile, the number of roof streets is reduced, the construction procedures and period are reduced, and the construction cost is reduced. Even if two circles of corridors still need to be arranged for unavoidable reasons, the maximum displacement value of the structural system under the gravity load is smaller than that of a spoke type cable truss structure adopting double-ring cables and having the same span, and the design of the corridors is facilitated. Compared with the mode of installing the steel structure cantilever on the end part of the cable truss, the invention has lighter weight and smaller structural member size. And can adopt whole once promotion, stretch-draw can accomplish the installation of whole roof structure 1, and construction convenience is showing and is improving, and construction cycle shortens by a wide margin.

Example two

Referring to fig. 11 to 17, the present invention provides a spoke-type cable truss structure system of a three-ring cable, which includes: an outer ring cable truss structure 10 and an inner ring cable truss structure 9; preferably, the outer ring truss structure 10 includes: the outer boundary 11, the upper ring cable 6, the lower ring cable 7, the outer ring upper radial cable 14, the outer ring lower radial cable 13, the main supporting rod 12 and the outer ring sling 201 between the outer ring upper radial cable 14 and the outer ring lower radial cable 13; one end of the radial cable 14 on the outer ring is connected with the outer boundary 11, and the other end is connected with the upper ring cable 6 through a node; one end of the outer ring lower radial cable 13 is connected with the outer boundary 11, and the other end of the outer ring lower radial cable is connected with the lower ring cable 7 through a node; the main supporting rod 12 is positioned between the upper ring cable 6 and the lower ring cable 7 and used for expanding the upper ring cable 6 and the lower ring cable 7 to form a structural height; the outer ring sling 201 is arranged between the outer ring upper radial cable 14 and the outer ring lower radial cable 13, so that the outer ring upper radial cable 14 and the outer ring lower radial cable 13 form curvature. Preferably, the inner ring cable truss structure 9 comprises an inner ring cable 8, an inner ring upper radial cable 15, an inner ring lower radial cable 16 and an inner ring sling 102 between the inner ring upper radial cable 15 and the inner ring lower radial cable 16; the inner end of the radial cable 15 on the inner ring is connected with the inner ring cable 8 through a node, and the outer end of the radial cable is connected to the node of the upper ring cable 6 of the outer ring cable truss framework; the inner end of the inner ring lower radial cable 16 is connected with the inner ring cable 8 through a node, and the outer end of the inner ring lower radial cable is connected to the node of the lower ring cable 7 of the outer ring cable truss framework; the inner ring sling 102 is arranged between the inner ring upper radial rope 15 and the inner ring lower radial rope 16, so that the inner ring upper radial rope 15 and the inner ring lower radial rope 16 form a curvature. Preferably, the radial cables 15 on the inner ring and the radial cables 14 on the outer ring intersect at the same point on the upper ring cable 6. The inner ring lower radial cables 16 and the outer ring lower radial cables 13 intersect at the same point on the lower ring cables 7.

The structure of the present invention can realize a larger spanning capability without increasing the thickness of the structure. The structural system can reduce the displacement of the mid-span position of the cable truss and improve the structural rigidity. The double-layer ring cable has the advantages that the structural rigidity of the position of the double-layer ring cable is high, the deformation is small, the position is closer to the middle part of the audience stand at the lower part, the equipment arranged at the position has a wider coverage area, and the lighting and acoustic equipment can be intensively arranged on a circle of carriageway, so that the coordination and unification of the building function and the structural stress performance are realized. Meanwhile, the number of roof streets is reduced, the construction procedures and period are reduced, and the construction cost is reduced. Even if two circles of corridors still need to be arranged for unavoidable reasons, the maximum displacement value of the structural system under the gravity load is smaller than that of a spoke type cable truss structure adopting double-ring cables and having the same span, and the design of the corridors is facilitated. Compared with the mode of installing the steel structure cantilever on the end part of the cable truss, the invention has lighter weight and smaller structural member size. And can adopt whole once promotion, stretch-draw can accomplish the installation of whole roof structure 1, and construction convenience is showing and is improving, and construction cycle shortens by a wide margin.

EXAMPLE III

Referring to fig. 18 to 24, the present invention provides a spoke-type cable truss structure system of a three-ring cable, which includes: an outer ring cable truss structure 10 and an inner ring cable truss structure 9; preferably, the outer ring truss structure 10 includes: the outer boundary 11, the upper ring cable 6, the lower ring cable 7, the outer ring upper radial cable 14, the outer ring lower radial cable 13, the main supporting rod 12 and the outer ring sling 201 between the outer ring upper radial cable 14 and the outer ring lower radial cable 13; one end of the radial cable 14 on the outer ring is connected with the outer boundary 11, and the other end is connected with the upper ring cable 6 through a node; one end of the outer ring lower radial cable 13 is connected with the outer boundary 11, and the other end of the outer ring lower radial cable is connected with the lower ring cable 7 through a node; the main supporting rod 12 is positioned between the upper ring cable 6 and the lower ring cable 7 and used for expanding the upper ring cable 6 and the lower ring cable 7 to form a structural height; the outer ring sling 201 is arranged between the outer ring upper radial cable 14 and the outer ring lower radial cable 13, so that the outer ring upper radial cable 14 and the outer ring lower radial cable 13 form curvature. Preferably, the inner ring cable truss structure 9 comprises an inner ring cable 8, an inner ring upper radial cable 15, an inner ring lower radial cable 16 and an inner ring stay 202 between the inner ring upper radial cable 15 and the inner ring lower radial cable 16; the inner end of the radial cable 15 on the inner ring is connected with the inner ring cable 8 through a node, and the outer end of the radial cable is connected to the node of the upper ring cable 6 of the outer ring cable truss framework; the inner end of the inner ring lower radial cable 16 is connected with the inner ring cable 8 through a node, and the outer end of the inner ring lower radial cable is connected to the node of the lower ring cable 7 of the outer ring cable truss framework; the inner ring struts 202 are disposed between the inner ring upper radial cords 15 and the inner ring lower radial cords 16 to impart curvature to the inner ring upper radial cords 15 and the inner ring lower radial cords 16. Preferably, the radial cables 15 on the inner ring and the radial cables 14 on the outer ring intersect at the same point on the upper ring cable 6. The inner ring lower radial cables 16 and the outer ring lower radial cables 13 intersect at the same point on the lower ring cables 7.

The structure of the present invention can realize a larger spanning capability without increasing the thickness of the structure. The structural system can reduce the displacement of the mid-span position of the cable truss and improve the structural rigidity. The double-layer ring cable has the advantages that the structural rigidity of the position of the double-layer ring cable is high, the deformation is small, the position is closer to the middle part of the audience stand at the lower part, the equipment arranged at the position has a wider coverage area, and the lighting and acoustic equipment can be intensively arranged on a circle of carriageway, so that the coordination and unification of the building function and the structural stress performance are realized. Meanwhile, the number of roof streets is reduced, the construction procedures and period are reduced, and the construction cost is reduced. Even if two circles of corridors still need to be arranged for unavoidable reasons, the maximum displacement value of the structural system under the gravity load is smaller than that of a spoke type cable truss structure adopting double-ring cables and having the same span, and the design of the corridors is facilitated. Compared with the mode of installing the steel structure cantilever on the end part of the cable truss, the invention has lighter weight and smaller structural member size. And can adopt whole once promotion, stretch-draw can accomplish the installation of whole roof structure 1, and construction convenience is showing and is improving, and construction cycle shortens by a wide margin.

Example four

Referring to fig. 25 to 31, the present invention provides a spoke-type cable truss structure system of a three-ring cable, which includes: an outer ring cable truss structure 10 and an inner ring cable truss structure 9; preferably, the outer ring truss structure 10 includes: the outer boundary 11, the upper ring cable 6, the lower ring cable 7, the outer ring upper radial cable 14, the outer ring lower radial cable 13, the main supporting rod 12 and the outer ring supporting rod 101 between the outer ring upper radial cable 14 and the outer ring lower radial cable 13; one end of the radial cable 14 on the outer ring is connected with the outer boundary 11, and the other end is connected with the upper ring cable 6 through a node; one end of the outer ring lower radial cable 13 is connected with the outer boundary 11, and the other end of the outer ring lower radial cable is connected with the lower ring cable 7 through a node; the main supporting rod 12 is positioned between the upper ring cable 6 and the lower ring cable 7 and used for expanding the upper ring cable 6 and the lower ring cable 7 to form a structural height; the outer ring stay 101 is arranged between the outer ring upper radial cables 14 and the outer ring lower radial cables 13, so that the outer ring upper radial cables 14 and the outer ring lower radial cables 13 form curvature. Preferably, the inner ring cable truss structure 9 comprises an inner ring cable 8, an inner ring upper radial cable 15, an inner ring lower radial cable 16 and an inner ring stay 202 between the inner ring upper radial cable 15 and the inner ring lower radial cable 16; the inner end of the radial cable 15 on the inner ring is connected with the inner ring cable 8 through a node, and the outer end of the radial cable is connected to the node of the upper ring cable 6 of the outer ring cable truss framework; the inner end of the inner ring lower radial cable 16 is connected with the inner ring cable 8 through a node, and the outer end of the inner ring lower radial cable is connected to the node of the lower ring cable 7 of the outer ring cable truss framework; the inner ring struts 202 are disposed between the inner ring upper radial cords 15 and the inner ring lower radial cords 16 to impart curvature to the inner ring upper radial cords 15 and the inner ring lower radial cords 16. Preferably, the radial cables 15 on the inner ring and the radial cables 14 on the outer ring intersect at the same point on the upper ring cable 6. The inner ring lower radial cables 16 and the outer ring lower radial cables 13 intersect at the same point on the lower ring cables 7.

The structure of the present invention can realize a larger spanning capability without increasing the thickness of the structure. The structural system can reduce the displacement of the mid-span position of the cable truss and improve the structural rigidity. The double-layer ring cable has the advantages that the structural rigidity of the position of the double-layer ring cable is high, the deformation is small, the position is closer to the middle part of the audience stand at the lower part, the equipment arranged at the position has a wider coverage area, and the lighting and acoustic equipment can be intensively arranged on a circle of carriageway, so that the coordination and unification of the building function and the structural stress performance are realized. Meanwhile, the number of roof streets is reduced, the construction procedures and period are reduced, and the construction cost is reduced. Even if two circles of corridors still need to be arranged for unavoidable reasons, the maximum displacement value of the structural system under the gravity load is smaller than that of a spoke type cable truss structure adopting double-ring cables and having the same span, and the design of the corridors is facilitated. Compared with the mode of installing the steel structure cantilever on the end part of the cable truss, the invention has lighter weight and smaller structural member size. And can adopt whole once promotion, stretch-draw can accomplish the installation of whole roof structure 1, and construction convenience is showing and is improving, and construction cycle shortens by a wide margin.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.