A Study on the prediction Model and Noise Control for Light Rail Transit
Date Issued
2006
Date
2006
Author(s)
Lin, Chun-Yuan
DOI
zh-TW
Abstract
Abstract
The characteristics of LRT were lower cost and shorter construction period than MRT; besides LRT can operate with other traffic on non-exclusive way and with pedestrian on LRT/Pedestrian Mall, and also can operate on the exclusive way to improve the efficiency of LRT. Introducing LRT system the noise must affect the residents’ life that lived along the LRT line. There is no LRT system in Taiwan, this study establishes the prediction model by case study of the LRT system in Hong Kong, the result will be as follow:
Without Background Sound Level:
Leq=(1.016)*Lmax+(0.770)*10log{[R(1.5D+d)]/v}-31.09
R: number of trains per hour
D: distance of the receive from the track centerline in meters
d: average train length in meters
v: train speed in km/hr
With fixed Background Sound Level:
Leq=(1.865)*10log{[I’/I0(Ta+Tf+ΣTi-1)+ΣniAj]/T}-49.61
d: the shortest distance between receiver and track in meters
I0/I’: background sound level
Lmaxj: the maximum noise level produced by passing train j
lj: length of passing train j in meters
nj: the numbers of the passing train j
(Tr)j : the total affected period of the passing train
Ta,Tf,Ti-1: the total affected period of the background sound level
vj: the speed of the passing train j (m/s)
Key words: Light Rail Transit, prediction model of noise
Subjects
輕軌運輸系統
噪音預測模式
Light Rail Transit
prediction model of noise
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-95-R93521521-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):63f3bbe01427fe1635af4f3cdaa710f9