Human response to railway vibration in residential environments : exposure-response relationships and modifying factors

Peris, E 2012, Human response to railway vibration in residential environments : exposure-response relationships and modifying factors , PhD thesis, University of Salford.

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ror understanding me wide variation in annoyance reactions, i^esuiis investigations made on factors coming into play when considering This thesis aims to contribute to the knowledge of human response to vibration in residential environments and identify factors of primary importance when considering exposure-response relationships from railway vibration. It has previously been shown that annoyance increases with vibration magnitude. However, these correlations between annoyance and physical ratings are weak. This suggests that vibration-induced annoyance is governed by more than just vibration level, and that simple exposure-response relationships alone do not provide sufficient information for the reactions. Results of an exposure-response relationship between level of vibration and annoyance are presented here. The factors investigated were time of day, situational factors, demographic and attitudinal factors. This was achieved using data from case studies comprised of face-to-face interviews and internal vibration measurements (N=755) collected within the study "Human Response to Vibration in Residential Environments" by the University of Salford. Exposure-response relationships were estimated from ordinal logit models. It was found that exposure-response relationships between annoyance scores and vibration exposure were strongly influenced by two attitudinal factors (property damage concern and expectations about future levels of vibration). One situational factor (location of the property) and one demographic factor (Age) were found to have an important effect on annoyance whereas visibility of the railway and time spent at home showed small but statistically significant influence. Time of day when the vibration occurs was also shown to play a role in the self-reported annoyance, with evening and night-time being the most sensitive periods. The additional annoyance is equivalent to 17 dB for the night and 8 dB for the evening for a rms Wk s\ of 0.01 m/s in the day. The relation between activity disturbance and exposure suggests that sleeping and resting are the activities most affected by railway induced vibration. These results indicate that future railway vibration policies and regulations focusing on community impact need to explore specific scenarios and new vibration indices in order to facilitate an optimal assessment of railway effects on residential environments.

Item Type: Thesis (PhD)
Contributors: Waddington, DC (Supervisor) and Moorhouse, AT (Supervisor)
Schools: Schools > School of Computing, Science and Engineering
Funders: Department for Food, Environment, and Rural Affairs (DEFRA)
Depositing User: Institutional Repository
Date Deposited: 28 Jul 2021 12:38
Last Modified: 27 Aug 2021 21:56

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