CN201649289U

CN201649289U - Prestress cantilever string structure

Info

Publication number: CN201649289U
Application number: CN2010201028800U
Authority: CN
Inventors: 王寿昌; 朱建良; 王浩炼; 钱海钢; 毛义华
Original assignee: ZHEJIANG BADA CONSTRUCTION GROUP CO Ltd
Current assignee: ZHEJIANG BADA CONSTRUCTION GROUP CO Ltd
Priority date: 2010-01-28
Filing date: 2010-01-28
Publication date: 2010-11-24
Anticipated expiration: 2020-01-28

Abstract

The utility model discloses a prestress cantilever string structure, which comprises a cantilever beam and a pressing rod. An upper string cable and an upright rod are arranged on the cantilever beam, and a stabilizing cable is arranged on the lower portion of the cantilever beam, thereby forming a single-string cantilever beam structure. A support seat is arranged at the end of the cantilever beam and connected with the end of the cantilever beam via a hinge support seat. The prestress cantilever beam string structure can annularly array single-string cantilever beams and connects the single-string cantilever beams via ring beams to form a roof structure, can realize one-end restrain and accordingly can be used in stadium roof structures, components of the prestress cantilever string structure mainly bear shaft force and sufficiently give play to intensity of materials, and the structure performs the functions of self-adjustment and self-protection.

Description

Pre-stressing force cantilever is opened beam string structure

Technical field

The utility model relates to the construction steel structure field, and particularly a kind of coliseum that can be used for is chosen the pre-stressing force cantilever of fluffy structure and opened beam string structure.

Background technology

How girder steel is one of most important load-carrying member in the structural steelwork, because the rigidity of beam is directly proportional with the cube of span, the rigidity that therefore effectively improves long-span beams is one of supporting capacity major issue that to be people study always.Tension string beam structure is at first proposed in the early 1980s by Nihon University M.Saitoh professor, and being described as at that time " connects bending resistance compressed member and tension member and the self equilibrium systems that forms with strut ".Since professor M.Saitoh proposes this novel hybrid spatial form of tension string beam structure, many application have been obtained.Engineerings such as the Pudong International Airport in Shanghai of China, Guangzhou International Conference and Exhibition Center have adopted tension string beam structure.

The tension string beam structure that the M.Saitoh professor is proposed applies prestressing force on the basis of simply supported beam and depression bar obtains, and bilateral supporting must be provided.Choose fluffy structure for coliseum, both sides all are that simple supported edge is not all right, because the bearing post of a side can stop spectators' sight line.So at present coliseum being chosen fluffy structure does not also have a kind of desirable tension string beam structure.

The utility model content

The purpose of this utility model is to provide a kind of good stress performance that has for the deficiency that solves above-mentioned technology, can give full play to material intensity, be specially adapted to make up coliseum and choose a kind of pre-stressing force cantilever of fluffy structure and open beam string structure.

In order to achieve the above object, the designed a kind of pre-stressing force cantilever of the utility model is opened beam string structure, and it comprises semi girder and depression bar, and semi girder is provided with wind up rope and montant, is provided with steadying line in the semi girder bottom, constitutes single Pin structure of truss-string cantilever thus.The end of semi girder is provided with bearing, and the end of semi girder is that hinged-support is connected with bearing.

A kind of pre-stressing force cantilever that the utility model provides is opened beam string structure, can be with single Pin truss-string cantilever along circumferential array, and link to each other with ring beam, constitute and choose fluffy structure.

When structure was born downward load, drag-line bore pulling force, and depression bar bears pressure, acting in conjunction opposing cantilever end moment of flexure, and the pulling force in the rope is passed to the basis by continuous rope; Obviously improve the stress performance of structure, given full play to the intensity of material.When being subjected to the wind load suction that makes progress, the moment of flexure of semi girder end nearly 80% is converted into the pulling force of steadying line, has reached the purpose of giving full play to the different component advantage equally, has improved the stress performance of structure.

Description of drawings

Fig. 1 structure of truss-string cantilever schematic diagram;

Fluffy structural representation is chosen in the stadium that Fig. 2 is made of structure of truss-string cantilever;

The Path of Force Transfer schematic diagram of structure when Fig. 3 is subjected to downward load;

The Path of Force Transfer schematic diagram of structure when Fig. 4 is subjected to make progress load;

Fig. 5 wind up rope and montant or depression bar connected node figure;

Fig. 6 is the lateral view of Fig. 5;

Fig. 7 funiculus posterior medullae spinalis and earth anchor connected node figure;

Fig. 8 is the lateral view of Fig. 7.

Wherein: the rope 1 that winds up, montant 2, depression bar 3, steadying line 4, semi girder 5, bearing 6, single Pin structure of truss-string cantilever 7, ring beam 8, funiculus posterior medullae spinalis 9, the anticorrosion steel wire 10 of double-deck PE, rope length regulating device 11, built-in connection 12.

The specific embodiment

The utility model will be further described in conjunction with the accompanying drawings below by embodiment.

Embodiment 1

As shown in Figure 1, the pre-stressing force cantilever that present embodiment provides is opened beam string structure, and it comprises semi girder 5 and depression bar 3, and semi girder 5 is provided with wind up rope 1 and montant 2, is provided with steadying line 4 in semi girder 5 bottoms, constitutes single Pin structure of truss-string cantilever 7 thus.The end of semi girder 5 is provided with bearing 6, and the end of semi girder 5 is that hinged-support is connected with bearing 6.

Embodiment 2

The pre-stressing force cantilever that present embodiment provides is opened beam string structure, needs to reach last shaped state by the prestressing force of wind up rope 1 and steadying line 4.Therefore, as shown in Figure 2, can be in conjunction with the concrete characteristics of this structure with single Pin truss-string cantilever 7 along circumferential array, and link to each other with ring beam 8, constitute and choose fluffy structure.

Embodiment 3

As Fig. 5, Fig. 6 is wind up rope 1 and montant 2 or depression bar 3 connected node figure, as shown in Figure 7, what present embodiment was described is to solve rope and bar, rope and rope connected node, considers to make repeatedly stretch-draw adjusting of drag-line in the work progress, and the utility model adopts the anticorrosion steel wire 10 of double-deck PE.Node adopts the hot-cast anchor to combine with the chill casting anchor, in the rope rope length regulating device 11 is set simultaneously, can regulate the stretch-draw value of drag-line, and this rope length regulating device 11 is to regulate the long steel bushing of rope.Its main node form such as Fig. 5, Fig. 6, Fig. 7, shown in Figure 8.Fig. 7, Fig. 8 are funiculus posterior medullae spinalis 9 and earth anchor connected node figure; When steadying line 4 is connected with semi girder 5 or post, elder generation's built-in connection 12 in beam or post, node type of attachment and Fig. 8 are basic identical afterwards.

The form of structure of present embodiment makes up easily, and Path of Force Transfer is clear and definite, steel using amount economy, and whole mechanical property is good, has from reconciling and adaptive ability meeting under the load action structure by chance, and job practices is simple, so this structure is practicable outstanding structure.

Claims

1. a pre-stressing force cantilever is opened beam string structure, and it comprises semi girder and depression bar, it is characterized in that semi girder is provided with wind up rope and montant, is provided with steadying line in the semi girder bottom, and the end of semi girder is provided with bearing, and the end of semi girder is that hinged-support is connected with bearing.