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Reinforcing method for welded hollow sphere joint

A technology of hollow spheres and joints, applied in construction, building maintenance, building construction, etc., can solve the problems of applicability, safety and stability of large-span space structures, improve the quality of construction projects, and reduce workload , Reduce the workload and the effect of the working environment

Inactive Publication Date: 2021-12-10
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, to provide a reinforcement method for welded hollow spherical joints, to solve the problem that the existing reinforcement methods cannot meet the applicability, safety and stability of large-span spatial structures, and Economic issues

Method used

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  • Reinforcing method for welded hollow sphere joint
  • Reinforcing method for welded hollow sphere joint
  • Reinforcing method for welded hollow sphere joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1, such as Figure 1 to Figure 5 As shown, embodiment 1 is a symmetrical node, image 3 Only half of the nodes are drawn to represent the geometry of Example 1, the reinforced part is a part of the cone, D R Indicates the diameter of the bottom (202) of the hollow conical reinforced member, t R Indicates the thickness of the hollow conical reinforced member (2), D p and t p Represent the outer diameter and thickness of steel pipe (102), D and t represent the outer diameter and thickness of hollow ball (101), H R Indicates the height of the hollow cone reinforcement (2).

[0035] The construction process of the hollow conical reinforcement member (2) in the present embodiment 1 is the following steps:

[0036] Step 1. According to the on-site construction conditions, test tests and people's needs, the mechanical design company will carry out the precise design of the components. The components are relatively precise and accurate, with almost no processing er...

Embodiment 2

[0039] Step 1. Test four reinforced and one unreinforced welded hollow spherical joints (1) samples. The welded hollow spherical joints (1) have the same geometric dimensions, and the hollow conical reinforced members (2) have different dimensions. The tested samples Such as Figure 5 , Image 6 shown.

[0040] Step 2, test results such as Figure 7 Schematic diagram of the test load-displacement curve, the compressive bearing capacity of the unreinforced welded hollow spherical joint (1) is 165kN, and the compressive bearing capacity of the reinforced welded hollow spherical joint (1) increases to 338kN, 274kN, 274kN and 249kN respectively ; The failure diagram of the strengthened sample is shown in Figure 8 , Figure 9 As shown, the failure of reinforced and unreinforced welded hollow sphere joints (1) is the buckling of the sphere; the buckling zones of reinforced and unreinforced welded hollow sphere joints (1) are as Figure 10 , Figure 11 As shown, the buckling z...

Embodiment 3

[0042] The construction process of the hemispherical reinforcing member (3) in the third embodiment is the same as that in the first embodiment, and the geometric dimensions of the welded hollow spherical nodes (1) are set to be the same as those in the first embodiment.

[0043] Embodiment 3 is a symmetrical node, Figure 14 Only draw half of the nodes to represent the geometric dimensions of embodiment 1, such as Figure 12 to Figure 15 As shown, a hemispherical reinforcing member (3) is set at the joint between the hollow ball (101) and the steel pipe (102), and the node passes through the hemispherical reinforcing member (3), which can disperse the force transmitted by the steel pipe (102) to improve the compressive load capacity The hemispherical reinforced member (3) is composed of a hemispherical surface cut into two identical parts. The hemispherical reinforced member (3) has a simple structure and can be produced in a factory. It only needs to be welded on site. Comp...

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Abstract

The invention discloses a reinforcing method for a welded hollow sphere joint, and belongs to the technical field of large-span space grid structures. The method comprises the welded hollow sphere joint, a hollow conical surface reinforcing component and a weld joint, the welded hollow sphere joint comprises a hollow sphere and a steel pipe, the hollow conical surface reinforcing component is arranged at the joint of the hollow sphere and the steel pipe, the hollow conical surface reinforcing component is formed by cutting a conical pipe into two identical parts, the hollow sphere, the steel pipe and the hollow conical surface reinforcing component are connected through welding joint, the hollow conical surface reinforcing component is simple in structural form, is mechanically designed and industrially produced, is relatively precise and accurate, almost has no machining error, work can be completed only through welding on site, the workload of workers is reduced, the project quality and working efficiency are improved, the project construction period is shortened, cost is saved, the welding hollow sphere joint and the hollow conical surface reinforcing component are connected through the welding joint on the construction site, the connection strength of the welding hollow sphere joint is improved, the bearing capacity of the welding hollow sphere joint is greatly improved, the application applicability, safety and stability of a large-span space structure can be met.

Description

technical field [0001] The invention relates to the technical field of large-span space grid structures, in particular to a reinforcement method for welded hollow spherical nodes. Background technique [0002] Welded hollow spherical joints are one of the commonly used connection forms in large-span spatial grid structures. Large-span spatial grid structures have undergone large-scale construction decades ago. Most of these structures will be corroded to varying degrees. Ideal welding The conclusions of hollow spherical joints are no longer applicable to corroded welded hollow spherical joints. In this context, many researchers have studied the mechanical properties of corroded welded hollow ball joints. For example, the research of Zhao Zhongwei et al. shows that the failure position of corroded welded hollow ball joints mainly occurs at the joint between the steel pipe and the welded hollow ball, reducing the The bearing capacity of corroded welded hollow spherical joints...

Claims

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Application Information

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IPC IPC(8): E04G23/02
CPCE04G23/0218
Inventor 赵中伟周松简相洋刘海卿吴秀峰张霓
Owner LIAONING TECHNICAL UNIVERSITY