On environmental ground borne noise & vibration abatment by implemeting floating slabs at Athens metro network - Measurements campaign results

Abstract

This paper describes the FS implementation, on 4 major extensions of Athens Metro lines 2 and 3, already in service: (a) extension of line 2 from Sepolia to Ag.Antonios station, (b) extension of line 2 from Dafni to Ilioupoli (Ag. Dimitrios station), (c) extension of line 3 from Ethniki Amyna to Stavros (D.Plakentias station)and, extension of line 3 from Monastiraki to Egaleo. Ground borne noise and vibration mitigation measures evaluation in normal operation conditions presented hereafter guarantees, especially in TO location along these extensions, allowable ground borne noise and vibration levels in nearby buildings & sensitive receptors. The measured Floating slab solutions measured within an extensive measurements campaign proven to achieving an overall ground borne and vibration attenuation of approx.15-16 dB(A) in soil surface. A comprehensive comparative presentation of the results is an important tool in evaluating the expected environmental protection potential of similar mitigation measures regarding noise & vibration emissions & generated annoyance from urban railway networks operation.