000022416 001__ 22416
000022416 005__ 20170622150012.0
000022416 04107 $$aeng
000022416 046__ $$k2015-05-25
000022416 100__ $$aCoulier, Pieter
000022416 24500 $$aEXPERIMENTAL AND NUMERICAL EVALUATION OF THE EFFICIENCY OF A STIFF WAVE BARRIER IN THE SOIL

000022416 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022416 260__ $$bNational Technical University of Athens, 2015
000022416 506__ $$arestricted
000022416 520__ $$2eng$$aThis paper discusses the design, the installation, and the experimental and numerical evaluation of the effectiveness of a stiff wave barrier in the soil as a mitigation measure for railway induced vibrations. A full scale in situ experiment has been conducted at a site in El Realengo (Spain), where a barrier consisting of overlapping jet grout columns has been installed along a railway track. This barrier is stiff compared to the soil and has a depth of 7.5 m, a width of 1 m, and a length of 55 m. Geophysical tests have been performed prior to the installation of the barrier for the determination of the dynamic soil characteristics. Extensive measurements have been carried out before and after installation of the barrier; this paper focuses on free field vibrations during train passages. Measurements have also been performed at a reference section adjacent to the test section in order to verify the effect of changing train, track, and soil conditions over time. The in situ measurements show that the barrier is very effective: during train passages, a reduction of vibration levels by 5 dB is already obtained from 8 Hz upwards, while a peak reduction of about 12 dB is observed near 30 Hz immediately behind the barrier. The performance decreases further away from the jet grouting wall, but remains significant. This in situ test hence serves as a ‘proof of concept’, demonstrating that stiff wave barriers are capable of significantly reducing vibration levels, provided that they are properly designed.

000022416 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022416 653__ $$aRailway induced vibrations, stiff wave barrier, in situ experiment, vibration mitigation.

000022416 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022416 720__ $$aCoulier, Pieter$$iLombaert, Geert$$iDegrande, Geert$$iCúellar, Vicente
000022416 8560_ $$ffischerc@itam.cas.cz
000022416 8564_ $$s3583512$$uhttps://invenio.itam.cas.cz/record/22416/files/C765.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022416 962__ $$r22030
000022416 980__ $$aPAPER