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Abstract
The acoustic environment of urban residential areas is closely related to road traffic noise. More specifically, the effect of the light rail on the old residential area in Chongqing is potentially profound. Using geographic information system (GIS) to construct a map of the urban light rail’s influence on the acoustic environment of residential areas, the influence of noise can be determined. Very few studies exist on the impact of light rails on the acoustic environment of residential areas, and there is no literature on the impact of light rails on the acoustic environment of residential areas using GIS. In this study, the degree of influence of a light rail on nearby residential areas and the diffusion degree of light rail noise in these areas during various times of the day were analysed by measuring the objective indicators of acoustic landscape elements and evaluating subjective indicators. The layout mode of the residential areas and the light rail were superimposed, and other traffic noise influences were eliminated. This method provides a scientific basis for the planning, design, and reconstruction of residential areas.
Highlights
Introduction e World HealthOrganization (WHO), which advocates the construction of healthy houses, stipulates that noise in “healthy houses” is less than one decibel
To monitor the acoustic environment of the residential areas under the influence of ground rail transit, measuring points were arranged outdoors in residential areas according to the regulations, and the influence of reflection on the noise value should be reduced to the greatest extent possible during the measurement [13]. e height of the measuring points was 1.2 m above the ground
In the core area in the Shengli road community, the highest noise level measured was 89 dB and the lowest was 61 dB (Figure 10(b)). e average decibel value of the study area reached its highest at 6 p.m., where it exceeded 65 dB. It can be seen from the sound environment diagram that the noise extends in the southwest direction along the light rail line, and its influence is gradually reduced 30 m away from the light rail station. e influence of traffic noise on the acoustic environment of residential areas is much greater than that of
Summary
To monitor the acoustic environment of the residential areas under the influence of ground rail transit, measuring points were arranged outdoors in residential areas according to the regulations, and the influence of reflection on the noise value should be reduced to the greatest extent possible during the measurement [13]. e height of the measuring points was 1.2 m above the ground. To monitor the acoustic environment of the residential areas under the influence of ground rail transit, measuring points were arranged outdoors in residential areas according to the regulations, and the influence of reflection on the noise value should be reduced to the greatest extent possible during the measurement [13]. In the week of May 20 to May 26, Sunday, Monday, ursday, and Friday were selected to measure the sound level of the residential areas along the light rail using a hand-held sound detector. E selected measurement time was representative, and the residents generally stayed in the residential area. E former is used for dividing the residential areas and processing the general data, while the latter is used for other land use and processing observation data. If there was a sudden fluctuation in the data at a certain point, the data for that area were measured several times, eliminating the effect of one noise each time. E data for the time when the rail passed were measured separately from those when the rail did not pass
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