CN101509279B

CN101509279B - Locating slip support of large-span space structure

Info

Publication number: CN101509279B
Application number: CN200910042855XA
Authority: CN
Inventors: 贺拥军; 周绪红
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-09-22
Anticipated expiration: 2029-03-12
Also published as: CN101509279A

Abstract

The invention discloses a limit gliding bearing of a large-span space structure, comprising a cubic limit box at the lower part of the bearing, an additional gliding plate arranged in the cubic limit box and a plate bearing arranged on the additional gliding plate, wherein, the cubic limit box is composed of a square base plate, 4 limit stop plates at the periphery of the square base plate and 4 small cover plates which cover the 4 corners of the 4 limit stop plates which are all welded together; the plate bearing is composed of a vertical supporting tube which is welded at the middle part of the base plate and 4 cross-shaped vertical supporting stiffening plates which are welded at the periphery of the vertical supporting tube; clearance size of the square base plate of the cubic limit box is larger than the size of the base plate of the plate bearing, and horizontal slip of the plate bearing is the difference between the clearance size of the cubic limit box and the size of the base plate of the plate bearing. In the invention, the plate bearing is allowed to have relatively large horizontal displacement, thus effectively releasing thermal stress, reducing horizontal thrust of the plate bearing on the lower structure of the limit gliding bearing, effectively reducing use amount of steel and lowering construction cost; meanwhile, in the invention, weakening on the base plate of the limit gliding bearing by opening anchor bolt holes is avoided, the structure is simple and the installation is convenient.

Description

A kind of locating slip support of large-span space structure

Technical field

The present invention relates to builing industry space structures field, specifically a kind of no crab-bolt locating slip support of large-span space structure.

Background technology

Large-span space structure is widely used in the buildings such as stadiums, conference and exhibition center, cinema, megastore, industrial premises, be that top is the large span space steel grid structure mostly, the bottom is a reinforced concrete structure, space truss structure by bearing support on substructure.In prior art for release temperature stress, minimizing is to the horizontal thrust of undersetting to substructure, generally be that the bolt hole on the plate bearing base plate is increased, cause between bolt and the hole wall to have certain clearance, make to produce certain horizontal sliding between bearing and the supporting construction.Then, thus there are the following problems for the plate bearing of this increase bolt aperture release temperature stress: when 1) increasing the bolt aperture to the weakening to a certain degree of base-plate; 2) increase in bolt aperture has certain limit, and general aperture is 2～2.5 times of the diameter of bolt, thereby the producible horizontal movement of bearing is very limited.

Summary of the invention

The objective of the invention is to overcome deficiency of the prior art, a kind of no crab-bolt locating slip support of large-span space structure is provided, increase the horizontal slip amount of bearing, release temperature stress also reduces horizontal thrust to substructure, avoids the weakening of anchor hole to base-plate simultaneously.

Technical scheme of the present invention is: by the cube position-limited box of lower floor, the plate bearing that increases slide plate and increase above the slide plate that is arranged in the cube position-limited box is formed, and described cube position-limited box is formed by four postive stop baffles of a square floor and base plate periphery and four minor flaps Combination Welding covering on four angles of four postive stop baffles; Described plate bearing is at vertical support pipe of a base plate middle part welding, there are four to be cross vertical support stiffener mutually in vertical support pipe peripheral solder, the headroom size of the square floor of described cube position-limited box is greater than the base plate size of plate bearing, the headroom size that the horizontal slip amount of bearing is the cube position-limited box and the base plate size of plate bearing poor.

The thickness of described postive stop baffle is 20～28 millimeters, the height of postive stop baffle be the plate bearing base plate thickness with increase slide plate thickness sum and add 5 millimeters gaps.

Clear distance in described four minor flaps between every adjacent two minor flaps moves horizontally scope and supporting stiffener thickness sum more than or equal to bearing, and the corner cut amount of minor flaps is 1/2 of its length of side, and the thickness of minor flaps is 20～28 millimeters.

Described cube position-limited box links to each other with pre-embedded steel slab on the supporting construction by weld seam.

Described four vertical support stiffeners are vertical with the postive stop baffle of cube position-limited box periphery.

The upper end of described plate bearing is welded with the ball node of space structures.

The described slide plate that increases is that thickness is 5～10 millimeters polyfluortetraethylene plate, and it is bonding by seccotine to increase slide plate and cube position-limited box base plate.

This no crab-bolt locating slip support of the present invention can allow bearing that bigger horizontal movement is arranged, effectively release temperature stress, reduce the horizontal thrust of bearing to substructure, thereby can reduce steel using amount effectively, reduce construction costs; Avoided opening the weakening of anchor hole simultaneously to base-plate.The minor flaps that four bights of cube position-limited box upper surface add can guarantee the reliable connection between the limiting plate, can avoid under cas fortuit simultaneously, and is owing to separating of the bearing that does not have crab-bolt to occur and supporting construction, simple in structure, easy for installation.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a cube position-limited box schematic diagram;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the plate bearing structural representation;

Fig. 5 is the A-A sectional view of Fig. 4.

The specific embodiment

Embodiment:

In conjunction with the accompanying drawings: whole no crab-bolt locating slip support is by the cube position-limited box III of lower floor, and the plate bearing I that increases slide plate II and increase above the slide plate that is arranged in the cube position-limited box forms.The cube position-limited box links to each other with pre-embedded steel slab 8 on the supporting construction by weld seam.

Cube position-limited box I is formed by a square floor 1 and four postive stop baffles 2 of periphery and four minor flaps 3 Combination Welding covering on four angles of periphery.

It is polyfluortetraethylene plate that present embodiment increases slide plate II, and thickness is 8 millimeters, and polyfluortetraethylene plate is tiled in the cube position-limited box, and the base plate 4 by seccotine and cube position-limited box cements.

Plate bearing is to be provided with a vertical support pipe 5 in the centre of base plate 4, in vertical support pipe 5 peripheral solder four cross vertical support stiffeners 6 is arranged.Four vertical support stiffeners 6 are vertical with the postive stop baffle 2 of cube position-limited box periphery, and the plate bearing upper end links to each other with the ball node 7 of space structures by welding.Do not have anchor hole on the base plate 4 of plate bearing, its size b is that 250 millimeters, thickness are 28 millimeters, and plate bearing horizontal sliding scope is ± 32 millimeters, and promptly the maximum horizontal slippage is 64 millimeters.

The headroom size a of cube position-limited box adds that 64 millimeters of required bearing horizontal sliding amounts are definite for 250 millimeters by base plate 4 sizes of plate bearing, is the 250+64=314 millimeter.The thickness of postive stop baffle 2 is 25 millimeters, and the height of postive stop baffle adds that by the thickness of plate bearing base plate and the thickness sum that increases slide plate 5 mm clearance determine, are the 28+8+5=41 millimeter.

Clear distance in described four minor flaps between every adjacent two minor flaps moves horizontally the supporting stiffener thickness sum of scope and cube position-limited box more than or equal to locating slip support.The size c of present embodiment minor flaps 3 is 140 millimeters, and the clear distance d of then adjacent two interblocks is 84 millimeters, and the corner cut amount of described minor flaps 3 is 1/2 of its length of side, promptly 70 millimeters.

The thickness that the vertical support pipe is of a size of 60 * 3 millimeters, four vertical support stiffeners 6 of Φ is 20 millimeters.

Claims

1. the locating slip support of a large-span space structure, it is characterized in that, cube position-limited box by lower floor, the plate bearing that increases slide plate and increase above the slide plate that is arranged in the cube position-limited box is formed, and described cube position-limited box is formed by four postive stop baffles of a square floor and base plate periphery and four minor flaps Combination Welding covering on four angles of four postive stop baffles; Described plate bearing is at vertical support pipe of a base plate middle part welding, there are four to be cross vertical support stiffener mutually in vertical support pipe peripheral solder, the headroom size of the square floor of described cube position-limited box is greater than the base plate size of plate bearing, the headroom size that the horizontal slip amount of bearing is the cube position-limited box and the base plate size of plate bearing poor.

2. the locating slip support of large-span space structure according to claim 1 is characterized in that, the thickness of described postive stop baffle is 20～28 millimeters, the height of postive stop baffle be the plate bearing base plate thickness with increase slide plate thickness sum and add 5 millimeters gaps.

3. the locating slip support of large-span space structure according to claim 1, it is characterized in that, clear distance in described four minor flaps between every adjacent two minor flaps moves horizontally scope and supporting stiffener thickness sum more than or equal to bearing, the corner cut amount of minor flaps is 1/2 of its length of side, and the thickness of minor flaps is 20～28 millimeters.

4. the locating slip support of large-span space structure according to claim 1 is characterized in that, described cube position-limited box links to each other with pre-embedded steel slab on the supporting construction by weld seam.

5. the locating slip support of large-span space structure according to claim 1 is characterized in that, described four vertical support stiffeners are vertical with the postive stop baffle of cube position-limited box periphery.

6. the locating slip support of large-span space structure according to claim 1 is characterized in that, the upper end of described plate bearing is welded with the ball node of space structures.

7. the locating slip support of large-span space structure according to claim 1 is characterized in that, the described slide plate that increases is that thickness is 5～10 millimeters polyfluortetraethylene plate, and it is bonding by seccotine to increase slide plate and cube position-limited box base plate.