Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

System and method for testing fatigue strength of corrugated steel web steel girders

A technology for detecting waveform and fatigue strength, applied in the direction of strength characteristics, using repetitive force/pulsation force to test the strength of materials, measuring devices, etc., can solve the problem of fatigue damage that the local force state does not match the actual situation, and avoid fatigue damage. , easy to replace, widely used effect

Active Publication Date: 2015-08-05
SICHUAN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that when the existing fatigue testing machine is used to clamp the welded corrugated steel web steel beam test piece and detect the fatigue strength of the welded part of the steel flange plate and the corrugated steel plate, it is easy to cause the local stress state to be different from the actual situation. Inconsistent and premature fatigue failure problems, a system for testing the fatigue strength of corrugated steel web steel beams is provided, which clamps the welded corrugated steel web steel beam test pieces and detects the steel flange plate and corrugated The fatigue strength of the welded part of the steel plate can better reflect the actual stress state and avoid premature unreasonable fatigue damage, thereby ensuring the correct measurement of the fatigue strength of the welded part of the steel flange plate and the corrugated steel plate. Also disclosed is a method for detecting the fatigue strength of corrugated steel web steel girders

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and method for testing fatigue strength of corrugated steel web steel girders
  • System and method for testing fatigue strength of corrugated steel web steel girders
  • System and method for testing fatigue strength of corrugated steel web steel girders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1As shown, the system for detecting the fatigue strength of corrugated steel web steel girders includes a fatigue testing machine 6, wherein the fatigue testing machine 6 is provided with an upper clamping system 4 and a lower clamping system 5, and the lower clamping system 5 is located on the upper clamping Directly below the system 4, the upper clamping system 4 and the lower clamping system 5 are connected with two chucks 1, the two chucks 1 connected to the upper clamping system 4 have the same level and the clamps of the two chucks 1 The holding ends are facing each other, the area between the two clamps 1 connected by the upper clamping system 4 is the bayonet socket for accommodating the upper end of the steel flange plate 2, and the two clamps 1 connected by the lower clamping system 5 have the same horizontal height and The clamping ends of the two chucks 1 are facing each other, and the area between the two chucks 1 connected by the lower clamp...

Embodiment 2

[0028] This embodiment is further improved on the basis of Embodiment 1. In order to facilitate intelligent control, the system for detecting the fatigue strength of corrugated steel web steel girders in this embodiment also includes an actuator 7, a sensor 8, and a main control box 9 And the computer system 10, wherein, the sensor 8 is a force and displacement sensor, the actuator 7 is connected with the upper clamping system 4, and the main control box 9 is connected with the actuator 7, the sensor 8 and the computer system 10 respectively through three data lines. When the system of this embodiment is used to detect the fatigue strength of the corrugated steel web steel girder, the control and corresponding recording of the applied force are all carried out in the computer system 10. The specific process is: the computer system 10 sends a control signal, and The signal conversion is performed by the main control box 9, and the loading signal is transmitted to the actuator 7 ...

Embodiment 3

[0030] Such as image 3 As shown, this embodiment has made further improvements on the basis of embodiment 1 or embodiment 2. The chuck 1 of this embodiment includes a chuck body 101, a middle clamping block 102 and a side clamping block 103, wherein the chuck The main body 101, the middle clamping block 102 and the side clamping block 103 all have an end face forming a slope, and the inclination angles of the three slopes are equal, and there is no gap between the slope of the middle clamping block 102 and the slope of the side clamping block 103 and the slope of the chuck body 101 Contact, both the middle clamping block 102 and the side clamping block 103 have a cross-section along the vertical chuck body 101, which is a right-angled trapezoidal shape, and the middle clamping block 102 and the side clamping block 103 are arranged at a certain distance, and the middle clamping block The area between 102 and the side clamping block 103 is a gap for accommodating the straight s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a system for detecting the fatigue strength of a steel beam of a corrugated steel web. The system comprises a fatigue testing machine (6), wherein the fatigue testing machine (6) is provided with an upper clamping system (4) and a lower clamping system (5), the upper clamping system (4) and the lower clamping system (5) are respectively connected with two chucks (1), an area between the two chucks (1) connected with the upper clamping system (4) is provided with a bayonet for containing the upper end of a steel flange plate (2), an area between the two chucks (1) connected with the lower clamping system (5) is provided with a bayonet for containing the lower end of the steel flange plate (2), and a notch capable of containing a flat section of a corrugated steel plate (3) is formed by the chucks (1). The invention also discloses a method for detecting the fatigue strength of the steel beam of the corrugated steel web by adopting the system. When the system and the method are adopted for clamping and welding the steel beam of the corrugated steel web and detecting the fatigue strength of welding parts, the actual stress state can be well reflected, unreasonable fatigue damage can be early avoided, and then the fatigue strength of the welingd parts can be correctly measured.

Description

technical field [0001] The invention relates to the field of steel structure tests, in particular to a system and a method for detecting the fatigue strength of corrugated steel webs and steel girders. Background technique [0002] Welded corrugated steel web steel girder is mainly welded by corrugated steel plate and steel flange plate. Since the corrugated steel plate itself has the characteristics of free expansion and contraction similar to the accordion effect under the action of longitudinal tension deformation, the steel flange under fatigue load The welded part of the plate and the corrugated steel plate is prone to fatigue damage, so the fatigue strength of the welded connection directly affects the durability of the corrugated steel web steel girder, and testing the fatigue strength of the welded connection is especially important for practical engineering. [0003] The chucks of the existing fatigue testing machine are single contact surfaces of a single clamp blo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N3/32G01N3/04
Inventor 王志宇王清远
Owner SICHUAN UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com