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

Preparation method for railway road bed large-week acceleration loading physical model test device

A physical model and railway embankment technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve uncontrollable geological conditions and environmental conditions, it is difficult to simulate changes in the dynamic performance of traffic infrastructure, and track and embankment models cannot Realize problems such as repeatability, achieve real-time monitoring, easy embedding, and simple test operation

Active Publication Date: 2013-09-18
ZHEJIANG UNIV
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is the ballastless track test section of the Eastern Suburb Ring Road in Beijing, where real vehicles are used for on-site simulation tests, which can realize dynamic tests at different train speeds. Unable to achieve repeatability, and difficult to simulate changes in the dynamic performance of traffic infrastructure after long-term service

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
  • Preparation method for railway road bed large-week acceleration loading physical model test device
  • Preparation method for railway road bed large-week acceleration loading physical model test device
  • Preparation method for railway road bed large-week acceleration loading physical model test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The present invention will be further described below in conjunction with drawings and embodiments. The preparation process of device among the present invention is as follows:

[0043] 1. The construction of model test chamber 1: such as figure 1 As shown, model test chamber 1: a rectangular steel structure model tank composed of main steel structure beams and columns 5 and main structure side steel plates 6. The specific size can be determined according to the required model size. In this example, the size used is 15m×long Width 5m x height 6m;

[0044] 2. The construction of the high-speed railway ballastless track subgrade model 2 and the monitoring system 4: lay gravel and sand cushion 22 on the bottom plate of the model test box 1. On the gravel and sand cushion layer 22, the foundation 7, the bottom layer of the foundation bed 8 and the surface layer of the foundation bed 9 are layered. During the filling process, the middle thickness of the foundation 7, the ju...

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 preparation method for a railway road bed large-week acceleration loading physical model test device. According to the method, the device is adjusted by constructing a model test box, a high-speed railway ballastless track road bed model, a monitoring system and an exciting system through analysis of a load bearing ratio test result, and a continuous steel rail is cut into fragmental steel rails, so that a stress state of a sub-rail structure is close to a state of running of a real train. Due to cooperative work of vibration exciters in the exciting system, a value model is used for calculating a load time-history result serving as an input load, so that running states of the real train at different speeds can be simulated. The device prepared by the method can be used for short-time and long-time test research on long-time dynamic performance of traffic basic facilities.

Description

technical field [0001] The invention relates to a preparation method of a large-cycle accelerated loading physical model test device for a railway subgrade. In particular, it relates to a preparation method of a physical model test device for large-cycle accelerated loading of a railway subgrade by simulating moving loads of vehicles to reproduce real train running. Background technique [0002] my country is now in a period of rapid development of rail transit, whether it is high-speed railways and intercity ordinary railways, or light rails and subways, they are all in the process of high-speed construction. With the operation of high-speed railways, the speed of trains has increased significantly, which puts forward high requirements on the dynamic performance of track structure and subgrade soil. The increase of the train speed leads to the aggravation of the vibration of the track structure, especially when the train speed is close to the critical wave velocity of the ...

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): G01N3/32
Inventor 边学成蒋红光陈云敏李公羽蒋建群陈仁朋
Owner ZHEJIANG 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