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

Fatigue test device taking coupling effect of steel bridge decking and pavement layer into consideration

A steel bridge deck, fatigue test technology, applied in the direction of measuring device, elasticity test, machine/structural component test, etc., can solve the problems of high cost and inability to consider the influence of the pavement layer, so as to reduce the test cost and improve the efficiency Effect

Active Publication Date: 2017-05-17
HOHAI UNIV
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the influence of the pavement layer is considered in the test, MTS is a feasible test device, but its cost is too high, and some small laboratories do not have this condition; while the vibration type fatigue test device is due to the fixation of the specimen and the loading method. Limitation, unable to take into account the influence of pavement layers

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
  • Fatigue test device taking coupling effect of steel bridge decking and pavement layer into consideration
  • Fatigue test device taking coupling effect of steel bridge decking and pavement layer into consideration
  • Fatigue test device taking coupling effect of steel bridge decking and pavement layer into consideration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] Take the fatigue test of three U-rib specimens with pavement as an example, such as figure 1 , figure 2 , image 3 , Figure 5 , Figure 6 , Figure 10 , Figure 11 , Figure 12 As shown, the fatigue testing device includes a fatigue testing machine 1, a high-strength bolt 2, a high-strength bolt hole 2a, a fixed base 3 for the fatigue testing machine, a longitudinal stiffener 3a, a transverse stiffener 3b, a threaded vertical rod 4, and a threaded vertical rod through the hole 4a , vertical rod connecting bearing 4b, bearing placement hole 4c, spring connection hole 4d, limit scale gauge 5, limit scale gauge placement hole 5a, limit spring 6, horizontal limit screw rod 7, actuating head placement chute 7a, Auxiliary positioning round rod 8, actuating head fixed end 9, actuating head fixing bolt 10, actuating head bolt through hole 10a, rubber actuating head 11, rubber actuating head rectangular bottom surface 11a, testing machine base fixing frame 12, connecting...

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 fatigue test device taking a coupling effect of a steel bridge decking and a pavement layer into consideration. The fatigue test device comprises a fatigue tester fixing pedestal, a rubber actuation head, a tester pedestal fixed frame, a frame and a frame fixing base plate, the frame accommodates a local steel bridge decking model with a pavement layer, and a fatigue tester acts a bending fatigue load on a testpiece via the rubber actuation head to simulate the practical contact effect between wheels and decking pavement. A connecting spring in the tester pedestal fixed frame enables that the bottom of the rubber actuation head clings to the surface of the testpiece. The frame fixing base plate is provided with a bolt hole group so as to adapt to installation of test pieces of different sizes. The device changes a fixation manner of the testpiece and a transfer mode of the fatigue load to apply the fatigue load to the local testpiece of the steel bridge decking with the pavement layer. Practical bearing conditions of the steel bridge decking and the pavement layer under the coupling effect can be simulated effectively, the test efficiency is improved substantially, and the test cost is reduced.

Description

technical field [0001] The invention relates to a bridge structure fatigue test instrument, in particular to a fatigue test device considering the coupling effect of steel bridge deck and pavement. Background technique [0002] Orthotropic steel bridge decks have been widely used in long-span cable system bridges due to their light weight, high strength, and high flexural and torsional stiffness. Due to its complex structure, fatigue cracks are one of the common defects of steel bridge decks, which are unavoidable and difficult to detect in the early stage, and even lead to the collapse of steel bridges in severe cases. Scholars at home and abroad have carried out a large number of theoretical and experimental studies on the fatigue cracks of steel bridge decks, but most of the research at this stage only focuses on the steel bridge deck itself, ignoring the bridge deck pavement. The research results at this stage show that the steel deck pavement has a non-negligible influ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00
CPCG01M5/0008G01M5/0075
Inventor 王秋东吉伯海傅中秋叶枝袁周致远
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com