GFRP posts for railway noise barriers – Experimental validation of load-carrying performance and durability

2008 ◽  
Vol 85 (2) ◽  
pp. 116-125 ◽  
Author(s):  
Thomas Keller ◽  
Florian Riebel ◽  
Till Vallée
Keyword(s):  
Experimental Validation ◽  
Noise Barriers ◽  
Railway Noise ◽  
Load Carrying

Characterizing noise barriers: SOPRANOISE half-term progress report

2021 ◽  
Vol 263 (3) ◽  
pp. 3663-3674
Author(s):  
Jean-Pierre Clairbois ◽  
Massimo Garai ◽  
Wolfram Bartolomaeus ◽  
Michael Chudalla ◽  
Fabio Strigari ◽  
...  
Keyword(s):  
Test Methods ◽  
Progress Report ◽  
Physical Significance ◽  
Final Report ◽  
Noise Barriers ◽  
Railway Noise ◽  
Development Phases ◽  
Effective Use

SOPRANOISE targets simplified assessment of the in-situ intrinsic acoustic performances of road / railway noise barriers. This paper presents its half-term progress. The research is divided in 5 Work Packages, the scientific ones being WP2 to WP5.WP2 is about establishing a state of art (SoA) of the intrinsic performances characterization: it is now finished and presented in 2 other papers by Conter and Fuchs. WP3 is about in-situ inspection tools: based on a review / questionnaire, an inspection protocol has been developed allowing simplified assessments mainly based on visual inspections and characterization of possible defects; WP3 is now in its final testing phase. WP4 is about designing a brand new "quick and safe methods" that could take place "in between" the inspection tools and the standardized EN1793-5 and 6; the research and development phases of WP4 are now finished, while its validation along highways is now scheduled. Finally, WP5 is about the use of noise barriers in the European market and the final report: a synthesis on the physical behavior of noise barriers and the physical significance of the test methods has been done, as well a SoA on the effective use of noise barriers; the results will be presented.

scholarly journals Design and Prototyping of a Partially Decoupled 4-DOF 3T1R Parallel Manipulator With High-Load Carrying Capacity

2008 ◽  
Vol 130 (12) ◽  
Author(s):  
Sébastien Briot ◽  
Vigen Arakelian ◽  
Sylvain Guégan
Keyword(s):  
Carrying Capacity ◽  
Horizontal Plane ◽  
Parallel Manipulator ◽  
Degrees Of Freedom ◽  
Experimental Validation ◽  
Vertical Axis ◽  
High Load ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Fixed Orientation

In this paper, a new four degrees of freedom 3T1R parallel manipulator with high-load carrying capacity is presented. This manipulator generates Schönflies motions, in which the moving platform carries out three independent translations and one rotation about one axis of fixed orientation. The particularity of the proposed architecture is the decoupling of the displacements of the platform in the horizontal plane from the platform’s translation along the vertical axis. Such a decoupling allows the cancellation of the gravity loads on the actuators, which displace the platform in the horizontal plane. A prototype of the proposed manipulator with four degrees of freedom and an experimental validation of the suggested concept are also presented. Two cases have been examined on the built prototype: a manipulator with payload and one without. It was shown that the input torques of actuators displacing the platform in the horizontal plane for these two cases are the same; i.e., the payload does not bring any load to the actuators.

Method of recognizing the high-speed railway noise barriers based on the distance image

2016 ◽  
Author(s):  
Le Ma ◽  
Shuangyun Shao ◽  
Qibo Feng ◽  
Bingqian Liu ◽  
Chol Ryong Kim
Keyword(s):  
High Speed ◽  
Noise Barriers ◽  
High Speed Railway ◽  
Railway Noise

scholarly journals Investigation of Noise Spectrum Characteristics for an Evaluation of Railway Noise Barriers

2013 ◽  
Vol 6 (3) ◽  
pp. 125-130
Author(s):  
Hyo-In Koh ◽  
Seungho Jang ◽  
Ji-Young Hong
Keyword(s):  
Noise Spectrum ◽  
Noise Barriers ◽  
Railway Noise ◽  
Spectrum Characteristics

SCALE MODELLING OF RAILWAY NOISE BARRIERS

2000 ◽  
Vol 234 (2) ◽  
pp. 207-223 ◽  
Author(s):  
D.C. HOTHERSALL ◽  
K.V. HOROSHENKOV ◽  
P.A. MORGAN ◽  
M.J. SWIFT
Keyword(s):  
Noise Barriers ◽  
Railway Noise ◽  
Scale Modelling

INFLUENCE OF SHAPE AND ABSORBING SURFACE—A NUMERICAL STUDY OF RAILWAY NOISE BARRIERS

1998 ◽  
Vol 217 (3) ◽  
pp. 405-417 ◽  
Author(s):  
P.A. Morgan ◽  
D.C. Hothersall ◽  
S.N. Chandler-Wilde
Keyword(s):  
Numerical Study ◽  
Noise Barriers ◽  
Railway Noise

Scale modeling of railway noise barriers

1998 ◽  
Vol 103 (5) ◽  
pp. 2800-2800 ◽  
Author(s):  
David C. Hothersall ◽  
Kirill V. Horoshenkov ◽  
Philip A. Morgan
Keyword(s):  
Noise Barriers ◽  
Railway Noise ◽  
Scale Modeling

EUROPEAN PROGRAM FOR ELABORATION OF COMPETITIVE RAILWAY NOISE BARRIERS—EUROÉCRAN

1996 ◽  
Vol 193 (1) ◽  
pp. 437-438
Author(s):  
P.H. de Vos
Keyword(s):  
Noise Barriers ◽  
Railway Noise ◽  
European Program
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