阅读说明：本技术 马鞍面单层交叉索网结构连接节点 (Saddle surface single-layer cross cable net structure connecting node ) 是由 刘人杰 曹佳佳 王广勇 李牧桥 于 2021-08-05 设计创作，主要内容包括：本发明涉及一种马鞍面单层交叉索网结构连接节点,属于大跨钢结构空间技术领域。连接节点由上、下两层索夹成一定角度螺栓连接而成,每层索夹均由外壳及其内部的鼓状半球体构成,外壳的两端设置有椭圆形的开口,外壳主要由上部板以及下部板通过螺栓固定连接在一起,上部板以及下部板上均设置有竖向螺栓圆孔,且下部板上还设置有弧形螺栓孔；鼓状半球体上贯穿设置有双索孔,用于容纳钢索,双索孔与两侧的椭圆形的开口对应设置。本发明通过外壳椭圆形的开洞、上下连接设置弧形螺栓孔以及双索孔设计这三个创新点能够更好的实现马鞍面单层交叉索网结构节点处的连接,减小结构在正常使用时产生的细小位移。(The invention relates to a saddle surface single-layer crossed cable net structure connecting node, and belongs to the technical field of large-span steel structure space. The connecting node is formed by connecting an upper layer of cable clamp and a lower layer of cable clamp through bolts at a certain angle, each layer of cable clamp is composed of a shell and a drum-shaped hemisphere inside the shell, oval openings are formed in two ends of the shell, the shell is mainly formed by fixedly connecting an upper plate and a lower plate through bolts, vertical bolt round holes are formed in the upper plate and the lower plate, and arc-shaped bolt holes are formed in the lower plate; the drum-shaped hemispheroid is provided with a double-cable hole in a penetrating way for accommodating a steel cable, and the double-cable hole is arranged corresponding to the oval openings at the two sides. The invention can better realize the connection of the node of the saddle surface single-layer crossed cable net structure through three innovation points of the oval opening of the shell, the upper and lower connection arrangement of the arc bolt holes and the design of the double cable holes, and reduces the fine displacement generated by the structure in normal use.)

1. Saddle face individual layer alternately cable net structure connected node, connected node is become certain angle bolted connection by upper and lower two-layer cable clamp (1) and forms its characterized in that: each layer of cable clamp (1) is composed of a shell (2) and a drum-shaped hemisphere (3) inside the shell, oval openings (4) are formed in two ends of the shell (2), the shell (2) is mainly formed by fixedly connecting an upper plate (21) and a lower plate (22) through bolts, vertical bolt round holes (23) are formed in the upper plate (21) and the lower plate (22), and arc-shaped bolt holes (24) are formed in the lower plate (22); the lower plates (22) of the upper layer cable clamp and the lower layer cable clamp (1) are relatively fixed together through bolts, so that the included angle between the upper layer cable clamp and the lower layer cable clamp (1) can be adjusted in a large range through the arc bolt holes (24); the two ends of the upper plate (21) and the lower plate (22) are respectively provided with an obliquely outward-expanding arc edge (25), so that the upper plate and the lower plate can be buckled together to form the oval opening (4); arc grooves (26) are formed in the middle of the upper plate (21) and the lower plate (22) and used for accommodating the drum-shaped hemispheroids (3); the drum-shaped hemispheroid (3) is provided with a double-cable hole (5) in a penetrating mode and used for accommodating a steel cable, and the double-cable hole (5) is arranged corresponding to the oval openings (4) on the two sides.

2. The saddle-surface single-layer cross-cable net structure connection node according to claim 1, wherein: the double-cable hole (5) is horizontally arranged on the drum-shaped hemispheroid (3).

3. The saddle-surface single-layer cross-cable net structure connection node according to claim 1, wherein: the height of the drum-shaped hemispheroid (3) is larger than the minor axis of the inner edge of the oval opening, but smaller than the minor axis of the outer edge of the oval opening.

4. The saddle-surface single-layer cross-cable net structure connection node according to claim 1, wherein: the upper plate (21) and the lower plate (22) are provided with two vertical bolt round holes (23) which are arranged oppositely; the two arc bolt holes (24) arranged on the lower plate (22) are oppositely arranged and are arranged at intervals with the vertical bolt round holes (23).

5. The saddle-surface single-layer cross-cable net structure connection node according to claim 1, wherein: the adjustable angle of the upper layer cable clamp and the lower layer cable clamp is 0-90 degrees.

6. The saddle-surface single-layer cross-cable net structure connection node according to claim 1, wherein: the shell (2) and the drum-shaped hemispheroid (3) inside the shell are made of steel materials.

Technical Field

The invention relates to a saddle surface single-layer crossed cable net structure connecting node, and belongs to the technical field of large-span space structures.

Background

Due to the change of requirements of stadiums, saddle surface single-layer cable net structures are increasingly applied to large-span steel structure buildings. Saddle surface cable net structures have long been the main saddle surface single-layer spoke type cable net structures. Saddle-surface single-layer crossed cable net structures have been newly proposed in recent years. The node connection between the cables is a key problem of the saddle surface single-layer cable net structure. The saddle surface single-layer spoke type cable net structure is mostly in one-way single-cable arrangement or two-way single-cable arrangement, and the inhaul cables in two directions are crossed at a fixed vertical angle when the two-way single-cable arrangement is carried out. The unidirectional single-cable arrangement means that the joint has only one cable in one direction, and the cable in the direction only consists of one cable. The bidirectional single cable means that the cables in two directions are crossed at the joint of the nodes, and each cable in the two directions comprises one cable. The bidirectional double-cable means that cables in two directions intersect at the joint, and the cables in the two directions are respectively composed of two parallel cables. In a saddle surface single-layer crossed cable net structure (hereinafter referred to as a loop-free cable structure), all node connecting positions of the structure are bidirectional double cables, and horizontal plane included angles between cables at different node connecting positions are different in degree and vertical included angles are different. The existing node connection technology can realize the connection of a unidirectional single cable and a bidirectional single cable or realize the unidirectional angle adjustability, and the node connection in the 'loop-free cable structure' has three difficulties: (1) the included angle between the cable and the cable is too large and complex; (2) the cable net and the horizontal plane form a certain angle; (3) in the bidirectional double-cable design, if the existing node connection manner is used for connection, the connection is complex and difficult to realize, so a novel cable net connection node structure needs to be researched and developed urgently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a saddle surface single-layer crossed cable net structure connecting node which is used for solving the problems of complex node connection and cable position change caused by fine adjustment after the structure is installed.

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

the saddle surface single-layer cross cable net structure connecting node is formed by connecting an upper layer cable clamp and a lower layer cable clamp through bolts at a certain angle, each layer of cable clamp is composed of a shell and a drum-shaped hemisphere inside the shell, two ends of the shell are provided with oval openings, the shell is mainly formed by fixedly connecting an upper plate and a lower plate through bolts, the upper plate and the lower plate are both provided with vertical bolt round holes, and the lower plate is also provided with arc bolt holes; the lower plates of the upper and lower cable clamps are relatively fixed together through bolts, so that the included angle between the upper and lower cable clamps can be adjusted in a large range through the arc bolt holes; the two ends of the upper plate and the lower plate are respectively provided with an obliquely outward-expanding arc edge, so that the upper plate and the lower plate can be buckled together to form the oval opening; arc grooves are formed in the middle parts of the upper plate and the lower plate and used for accommodating the drum-shaped hemispheroids; the drum-shaped hemispheroid is provided with a double-cable hole in a penetrating mode and used for containing a steel cable, and the double-cable hole is arranged corresponding to the oval openings on the two sides.

Furthermore, the double-cable hole is horizontally arranged on the drum-shaped hemisphere.

Further, the height of the drum-shaped hemisphere is larger than the minor axis dimension of the inner edge of the opening of the oval shape, but smaller than the minor axis dimension of the outer edge of the opening of the oval shape.

Furthermore, the two vertical bolt round holes arranged on the upper plate and the lower plate are oppositely arranged; the arc bolt holes arranged on the lower plate are two opposite and are arranged at intervals with the vertical bolt round holes.

Further, the adjustable angle of the upper layer cable clamp and the lower layer cable clamp is 0-90 degrees.

Furthermore, the shell and the drum-shaped hemispheroid inside the shell are made of steel materials.

Compared with the prior art, the invention has the following beneficial effects:

compared with the prior art, the saddle surface single-layer crossed cable net structure node connection can be better realized through three innovation points of the oval opening of the shell, the upper and lower connection arrangement of the arc bolt holes and the design of the double cable holes, and the small displacement generated by the structure in normal use is reduced. Wide adjusting range and simple construction.

Drawings

FIG. 1 is a schematic view of the overall structure of a saddle surface single-layer cross cable net structure connecting node of the invention;

FIG. 2 is a front view of the upper or lower cord gripper;

FIG. 3 is a bottom view of the upper or lower cord clip;

FIG. 4 is a top view of the upper or lower cord clamps;

fig. 5 is a sectional view a-a in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, the saddle surface single-layer cross cable net structure connecting node is formed by connecting an upper layer cable clamp 1 and a lower layer cable clamp 1 through bolts at a certain angle.

As shown in fig. 2-5, each layer of cable clamp 1 is composed of a shell 2 and a drum-shaped hemisphere 3 inside the shell, and the shell 2 and the drum-shaped hemisphere 3 inside the shell are both made of steel materials. The both ends of shell 2 are provided with oval-shaped opening 4, and shell 2 mainly passes through bolt fixed connection together by upper portion board 21 and lower part board 22, all is provided with vertical bolt round hole 23 on upper portion board 21 and the lower part board 22, and still is provided with arc bolt hole 24 on the lower part board 22. The lower plates 22 of the upper and lower cable clamps 1 are relatively fixed together through bolts, so that the included angle between the upper and lower cable clamps 1 can be adjusted in a large range through the arc bolt holes 24. In this embodiment, two vertical bolt circular holes 23 provided in the upper plate 21 and the lower plate 22 are provided to face each other. The two arc bolt holes 24 arranged on the lower plate 22 are also oppositely arranged and are arranged at intervals with the vertical bolt round holes 23.

As shown in fig. 2 and 5, the upper plate 21 and the lower plate 22 are provided with obliquely outwardly expanding arc edges 25 at both ends thereof so as to be able to be fastened together to form the oval opening 4. The height of the drum-like hemisphere 3 is greater than the minor axis dimension of the inner edge of the opening of the ellipse, but less than the minor axis dimension of the outer edge of the opening of the ellipse.

In addition, the middle parts of the upper plate 21 and the lower plate 22 are provided with arc grooves 26 for accommodating the drum-shaped hemispheres 3. The drum-shaped hemisphere 3 is provided with a double-rope hole 5 which is horizontally arranged in a penetrating mode and used for containing a steel rope, and the double-rope hole 5 is arranged corresponding to the oval openings 4 on the two sides.

Through the arrangement, the adjustable angle of the upper layer cable clamp and the lower layer cable clamp in the embodiment is 0-90 degrees. Fig. 1 shows that the angle of arrangement of the upper and lower layers of the cable clamp is 90 degrees.

The above embodiments are only preferred embodiments of the present invention, but are not limited to the above embodiments, and it should be understood that various changes, modifications, substitutions and alterations can be made by those skilled in the art without departing from the principle and spirit of the present invention, and fall within the protection scope of the present invention.