Steel pipe necking and welded hollow sphere connection joint

A technology for connecting nodes and hollow spheres, which is used in buildings, building structures, etc., can solve the problems of seismic damage of bolted ball joints and large size of welded hollow spheres, achieve reasonable and reliable structural design, improve bearing capacity, and reduce welding seams. effect of length

Inactive Publication Date: 2017-01-11
TAIYUAN UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the size of the welded hollow ball is too large and the shock damage of the bolt ball joint is prominent in the existing connection node, the present invention provides a connection node with reduced diameter of steel pipe and welded hollow ball

Method used

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  • Steel pipe necking and welded hollow sphere connection joint
  • Steel pipe necking and welded hollow sphere connection joint

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The connection node between steel pipe shrinkage and welded hollow ball, including steel pipe 1, welded hollow ball 2 and steel tapered pipe 3, a butt weld 5 connecting the two is arranged between one end of steel tapered pipe 3 and steel pipe 1, and steel tapered pipe 3 There is a butt weld I4 connected between the other end and the welded hollow ball 2, and the wall thickness of the steel tapered tube 3 gradually increases along the side of the welded hollow ball 2.

[0013] In the specific implementation process, the steel pipe 1 and the steel tapered pipe 3 are connected as one in the factory through the butt weld 5, and the steel tapered pipe 3 and the welded hollow ball 2 are assembled together through the butt weld 4 during field operations; the steel tapered pipe 3 The inclination angle and thickness range are determined according to the bearing capacity and connection structure, and the diameter of the small head of the steel tapered pipe 3 is determined accordi...

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Abstract

The invention relates to connection joints of space grid structures, in particular to a steel pipe necking and welded hollow sphere connection joint. The problems that according to an existing connection joint, the dimension of a welded hollow sphere is too large, and the earthquake damage risk of bolt sphere joints is severe are solved. The steel pipe necking and welded hollow sphere connection joint comprises a steel pipe, a welded hollow sphere and a steel taper pipe. A butt welding seam connected with one end of the steel taper pipe and the steel pipe is arranged between one end of the steel taper pipe and the steel pipe. A butt welding seam I connected with the other end of the steel taper pipe and the welded hollow sphere is arranged between the other end of the steel taper pipe and the welded hollow sphere. The wall thickness of the side, along the welded hollow sphere, of the steel taper pipe is increased gradually. According to the connection joint, the performance of a welded hollow sphere joint grid structure is greatly improved, and the steel amount of the joint is reduced; in addition, the bearing capacity of a hollow sphere joint with the same thickness is greatly improved, and the technological difficulty of field installation is lowered; and meanwhile, the steel sphere manufacturing efficiency is improved.

Description

technical field [0001] The invention relates to a connection node of a space grid structure, in particular to a connection node of steel pipe diameter reduction and welded hollow balls. Background technique [0002] With the widespread use of spatial grid structures, the process performance, safety performance, durability, and seismic performance of grid structure nodes have become key technologies for the development of the industry. At present, the main types of nodes used in grid structures in my country are welded hollow spheres and bolted spheres. These two node systems have their own characteristics, but there are some problems that need to be solved in the process of use. [0003] Welded hollow ball joints are widely used for their advantages of simple structure, convenient connection, high rigidity, good sealing performance, universality and easy alignment with steel pipes. However, in recent years, with the increasing span and complex shape of the grid, the size o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/58
CPCE04B1/58
Inventor 李海旺王元新宋夏芸杜雷鸣王威
Owner TAIYUAN UNIV OF TECH
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