CN107386513A - A kind of big opening type super-span suspended-dome structure - Google Patents

Abstract

The invention discloses a large-opening ultra-large-span suspensive dome structure, which is composed of a large-opening reticulated shell structure and a cable-strut system respectively arranged on the upper and lower floors, and the large-opening reticulated shell structure is composed of radial rods and latitudinal rods Composition; the cable-strut system is composed of hoop cables, struts, radial tie rods and cable nodes, and the junction of the large-opening reticulated shell structure and the cable-strut system forms rod nodes and support nodes; the radial rods are along the ring direction Closed arrangement, the radial rod is connected with the longitudinal rod at the opening of the dome structure and intersects at the node of the rod; the intersection point of the loop cable and the radial rod is the node of the cable, and the radial rod and the strut The upper end is connected with the bar node, and the lower end is connected with the cable node. The structure of the present invention can give full play to the composite advantages of the cable-strut system and the single-layer reticulated shell in the suspension dome structure, achieve the effect of convenient processing and production, and reduce the difficulty of construction, and effectively solve the problems of the above-mentioned existing systems used in large-scale stadium roofs. The problem.

Description

A Suspension Dome Structure with Large Opening and Super Large Span

technical field

The invention belongs to the field of building structures, and relates to a large-span venue building roof structure, more specifically to a large-opening super-long-span suspensive dome structure.

Background technique

The commonly used structures of stadium roofs that have been built and are currently under construction mainly include reticulated shell structure, cantilever truss and cable net structure. These three structures have their own characteristics and applicability during use.

The reticulated shell structure generally has high rigidity, strong spanning ability, good structural integrity, convenient processing and fabrication of rods and nodes, and low difficulty in construction and installation, so it is often used in various long-span structures. However, the reticulated shell structure generally has many rods, poor aesthetics, large horizontal reaction force at the support, and a large burden on the design of the lower structure; when welding ball joints are used, the amount of on-site welding is large.

Cantilevered truss structures are used in several stadium buildings. It is generally simple and beautiful in shape, and the structural units can be pre-assembled in the factory, and the amount of on-site welding is small. However, in this kind of structure, more supports and tie rods should be set between the cantilever trusses to improve the structural integrity; at the same time, during the construction process, it is often limited by the site conditions, requiring large-tonnage lifting equipment.

The cable net structure is a flexible space full tension structure, simple and beautiful, with strong space spanning ability, and has been applied in many stadiums and other long-span buildings constructed in recent years. In this system, in order to achieve the required stiffness of the structure, a large pre-tension force is generally required in the cable, which makes the force transmission of the cable nodes complicated; when the unbalanced force between the cable segments is large, the structure of the cable nodes is complicated. It has high requirements on the construction tensioning process and structural forming process, and generally requires a special prestressing construction unit to complete the construction tensioning.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a large-opening super-large-span suspensive dome structure, which can avoid the problem of large horizontal force of the support when the reticulated shell is used for the roof of the stadium , to avoid the problem of poor structural integrity when the cantilever truss is used in the stadium, and to avoid the complex problems of node structure and construction tensioning process when the cable-net structure is used in the stadium roof, so that the cable-supported dome structure can be fully utilized. The composite advantages of the rod system and the single-layer reticulated shell achieve the effect of convenient processing and production, and reduce the difficulty of construction, and effectively solve the problems existing in the above-mentioned existing systems used in large-scale stadium roofs.

The purpose of the present invention is achieved through the following technical solutions:

A large-opening ultra-large-span suspensive dome structure, which is composed of a large-opening reticulated shell structure and a cable-strut system respectively arranged on the upper and lower floors, and the large-opening reticulated shell structure is composed of radial rods and latitudinal rods; The cable-strut system is composed of ring cables, struts, radial pull rods and cable nodes, and the junction of the large open reticulated shell structure and the cable-strut system is formed with rod nodes and support nodes;

The radial rods are closed and arranged in the circumferential direction, and the radial rods are connected with the longitudinal rods at the opening of the dome structure and intersect at the nodes of the rods; The stay cable nodes are described, the upper ends of the radial tie rods and struts are connected to the rod member nodes, and the lower ends are connected to the stay cable nodes.

Further, the planar projection of the suspendome structure is a hollow elliptical ring or a hollow circular ring. The outer diameter of the long axis of the plane projection of the suspendome structure is at least 150m, and the outer diameter of the short axis is at least 100m.

Further, the upper ends of the struts are connected with 2 to 4 radial rods, 2 weft rods and less than 2 radial tie rods.

Further, the lower ends of the struts are connected with 2 hoops and 2 radial pull rods.

Further, at least one ring of hoops and at least one ring of struts are provided in the cable-rod system, and at least three struts are provided in each ring, and the struts located in the innermost circle are connected to each other by radial tie rods.

Further, the large opening reticulated shell structure and the cable-strut system intersect at the node of the support. The nodes in the large opening reticulated shell structure adopt cast steel nodes or welded hollow spherical nodes.

Further, the radial rods, latitudinal rods and struts are made of square steel pipes or round steel pipes; the hoops are steel wire bundles or steel strands; the radial tie rods are steel tie rods.

Compared with the prior art, the beneficial effects brought by the technical solution of the present invention are:

(1) The dome structure of the present invention is a self-balancing structure system, the design burden of the lower structure is small, the requirements for the support are relatively low, and the construction process is simplified;

(2) The upper reticulated shell structure of the dome structure of the present invention can improve the integrity of the roof structure;

(3) The dome structure of the present invention is a rigid and flexible composite structure system, which can reduce the prestress applied in the hoop cables of the lower structure, and meanwhile the structure of the cable joints is greatly simplified;

(4) The dome structure of the present invention utilizes the characteristics of the two structural materials of the bending member and the tensile member to the greatest extent, and can utilize as few materials as possible to build a large-span structure;

(5) The dome structure of the present invention is easy to select the roofing material, and rigid materials can be used to cover the roof, which is relatively cheaper than the membrane material adopted in the cable net structure, which can reduce the overall project cost;

(6) Compared with the reticulated shell structure, the dome structure of the present invention greatly reduces the number of tie rods and has outstanding aesthetics.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional wireframe structure of the present invention;

Fig. 2 is the structural representation of cable rod system of the present invention;

Fig. 3 is a schematic diagram of a three-dimensional structure of the present invention;

Fig. 4 is the plane structure schematic diagram of the large opening type reticulated shell structure of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the suspensed dome structure of the present invention.

Reference signs: 1-radial rod, 2-weft rod, 3-ring cable, 4-strut, 5-radial tie rod, 6-rod node, 7-stay cable node, 8-support node

detailed description

In order to further understand the content, characteristics and effects of the present invention, give the following examples, and describe in detail:

Please refer to Fig. 1 to Fig. 5, a large-opening super-long-span suspend dome structure system. The invention includes two parts: a large-opening reticulated shell structure on the upper layer and a cable-strut system structure on the lower layer. In this embodiment, the large-opening reticulated shell structure is a single layer, consisting of radial rods 1 and latitudinal rods 2; the radial rods 1 are connected to the latitudinal rods 2 at the rod node 6; Square spherical reticulated shell structure. The lower cable-strut system is composed of ring cable 3, strut 4, radial tie rod 5 and cable node 7; ring cable 3 is arranged in a closed ring direction; 7 are connected; some radial tie rods 5 form a group of two, which are radial, the tip is connected with the node 7 of the cable, and the tail is connected with the node 6 of the rod or the node 8 of the support, and some are in a group with the node of the cable 7. The rod node 6 or the support node 8 are connected.

Specifically, in this embodiment, the ring rope 3 has 2 turns, and the height of each turn is different, and the material is high-strength steel wire bundle. The outer diameter L1 of the long axis of the plane projection of the suspendome structure is 150m, and the outer diameter L2 of the short axis is 100m.

Strut 4 has 2 circles, and the length of every circle of strut is similar, and material is the round steel pipe of intensity Q345B.

Specifically, the bar node 6, the cable node 7 and the support node 8 of the large-span suspensive dome structure of the present invention adopt cast steel nodes or welded hollow spherical nodes. The radial rod 1 and the latitudinal rod 2 are round steel pipes with a material strength of Q345B. Radial pull rod 5 adopts steel pull rod.

The present invention is not limited to the embodiments described above. The above description of the specific embodiments is intended to describe and illustrate the technical solution of the present invention, and the above specific embodiments are only illustrative and not restrictive. Without departing from the gist of the present invention and the scope of protection of the claims, those skilled in the art can also make many specific changes under the inspiration of the present invention, and these all belong to the protection scope of the present invention.

Claims (9)

1. A large-opening super-large-span suspensive dome structure, characterized in that it is composed of a large-opening reticulated shell structure and a cable-strut system respectively arranged on the upper and lower floors, and the large-opening reticulated shell structure is composed of radial rods (1) and latitudinal rod (2); the cable-rod system is composed of hoops (3), struts (4), radial pull rods (5) and cable nodes (7), and the large opening type A bar node (6) and a support node (8) are formed at the junction of the reticulated shell structure and the cable-strut system; The radial rods (1) are arranged circumferentially closed, the radial rods (1) are connected to the longitudinal rods (2) at the opening of the dome structure and intersect at the rod node (6); The intersection point of the ring cable (3) and the radial tie rod (5) is the cable node (7), and the upper ends of the radial tie rod (5) and the strut (4) are connected to the rod node (6) , the lower end is connected with the cable node (7). 2. A large-opening super-span suspensive dome structure according to claim 1, characterized in that the plane projection of the suspensed dome structure is a hollow elliptical ring or a hollow circular ring. 3. According to claim 1 or 2, a large-opening ultra-large-span suspension dome structure, characterized in that, the outer diameter of the major axis of the planar projection of the suspension dome structure is at least 150 m, and the outer diameter of the minor axis is at least 150 m. 100m. 4. A large-opening super-long-span suspensive dome structure according to claim 1, characterized in that the upper ends of the struts (4) are connected with 2 to 4 radial rods (1) and 2 latitudinal rods (2) and 2 following radial pull rods (5) link to each other. 5. according to claim 1 or 4 described a kind of large opening type super large span suspensive dome structure, it is characterized in that, the lower end of described strut (4) and 2 hoops (3) and 2 radial pull rods ( 5) connected. 6. According to claim 1, a kind of large-opening ultra-long-span suspensive dome structure is characterized in that, at least one loop of hoop (3) and at least one loop of strut (4) are arranged in the cable-strut system, There are at least three struts (4) in each circle, and the struts (4) located in the innermost circle are connected with each other by radial pull rods (5). 7. A large-opening ultra-long-span suspensive dome structure according to claim 1, characterized in that the large-opening reticulated shell structure and the cable-strut system meet at the support node (8). 8. A large-opening ultra-large-span suspensive dome structure according to claim 1 or 7, wherein the nodes in the large-opening reticulated shell structure are cast steel nodes or welded hollow spherical nodes. 9. A large-opening super-span suspensive dome structure according to claim 1, characterized in that, the radial rods (1), latitudinal rods (2) and struts (4) are made of square steel pipes or circular Shaped steel pipes; the ring cable (3) adopts steel wire bundles or steel strands; the radial pull rod (5) adopts steel pull rods.