Noise Reduction Using Concrete Barriers: A Case Study

Abstract Noise pollution is becoming more and more acute, and hence many researchers are studying the noise attenuation effect and prevention of noise. In this study an attempt has been made to find the reduction in noise levels at National Highway 45 near peerkankaranai in Chennai. Two sensitive places were selected along NH 45 by examining attenuation of noise by providing noise barriers in the form of concrete structures. The primary goal of this project was to identify innovative design of noise barrier that has the potential to be implemented in NH 45, Chennai. Based on the research and evaluation conducted for this study, it was recommended that two innovative barrier designs be implemented in Chennai. First, a noise prediction is made at the specified location on the highway under certain traffic conditions in order to determine the noise level by measurement and decide on the barrier requirement. The installation of sound barriers is feasible enough to cause a significant decrease in noise pollution at the roads. Considerable noise attenuation is achieved by providing concrete noise barrier. The paper provides Leq at the time of traffic data recorded was 105.1 dBA at NH45 and 91.108 dBA at NH5 during the time of observation at installation of barrier the values are 70.09 dBA 79.11 dBA, respectively. Noise reduction is possible and noise reduction is predominantly reduced by providing barrier.

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The study for installing noise barrier on highway route no.9

MATEC Web of Conferences ◽

10.1051/matecconf/201816901012 ◽

2018 ◽

Vol 169 ◽

pp. 01012

Author(s):

Chaddanai Jiradecha ◽

Pruethipong Singhatiraj

Keyword(s):

Traffic Congestion ◽

Noise Level ◽

Noise Pollution ◽

Mathematic Model ◽

Rapid Expansion ◽

Noise Barriers ◽

Sensitive Areas ◽

The People ◽

Noise Barrier ◽

A New Technique

Highway Route No. 9 is a Bangkok bypass motorway that aims to alleviate traffic congestion in greater Bangkok areas. Presently, it is found a rapid expansion of new communities residing along both side of Highway No. 9. To lessen the noise level, Department of Highways installed the noise barrier on the sensitive locations. However, people from communities living on both sides of highway still demand some additional noise pollution improvement. To improve the efficiency of using noise barriers and to promote environmental and social quality for the people on the sensitive communities along the highway route, the Department of Highways, therefore, designs a new technique for installing noise barrier on the sensitive areas, i.e. education institutions, temple, residential area. In addition, the mathematic model is applied to 12 selected locations of sensitive areas for monitoring the effectiveness of the new installation technique. The mathematic model is used for predict the future noise level after installation of noise barrier in year 2037. The results confirm that the appropriate height and width of noise barrier can improve the comfortable of the people on the sensitive area.

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Analysis on Traffic Noise Attenuation by Using Sound Barrier

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.584-586.776 ◽

2014 ◽

Vol 584-586 ◽

pp. 776-779

Author(s):

Xian Feng Huang ◽

Chen Hui Zhu ◽

Quan Shi

Keyword(s):

Sound Source ◽

Insertion Loss ◽

Traffic Noise ◽

Noise Attenuation ◽

Noise Barriers ◽

Sound Barrier ◽

Noise Barrier ◽

Significant Attenuation ◽

Infinite Line ◽

Insertion Losses

By applying noise insertion loss predicting model of the noise barriers, influencing factors on insertion loss of the sound barrier are investigated for achieving the significant attenuation effects. In term of the infinite line sound source and the finite length of the barriers, the sound insertion losses with varying parameters are calculated and compared. Finally, the meaningful results indicate that the economic and reasonable height and length of the noise barrier are gained to be beneficial for barrier design.

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Applications of noise barriers with a slanted flat-tip jagged cantilever for noise attenuation on a construction site

Journal of Vibration and Control ◽

10.1177/1077546317747779 ◽

2017 ◽

Vol 24 (22) ◽

pp. 5225-5232 ◽

Cited By ~ 6

Author(s):

Wang Zhaomeng ◽

Lim Kian Meng ◽

Prachee Priyadarshinee ◽

Lee Heow Pueh

Keyword(s):

Noise Pollution ◽

Comfort Level ◽

Destructive Interference ◽

Noise Attenuation ◽

Construction Site ◽

Cross Sectional ◽

Sound Fields ◽

Noise Barrier ◽

Sectional Profile ◽

Level Of Living

Construction noise is one of the main sources of noise pollution in many cities, and degrades the comfort level of living spaces. It was previously reported that a noise barrier with a wide “cross-sectional profile” (e.g., T- or Y-shaped) could enhance the noise attenuation performance, and the jagged edge “longitudinal profile” on the top edge of the noise barrier could generate destructive interference sound fields behind the noise barrier, which could further reduce the noise levels. The present paper attempts to study the noise attenuation performances of jagged edge profiles applied on the edge of a cantilever, which was mounted at the top of a commercial passive noise barrier. In addition to the numerical simulations, the full-sized prototypes were also experimentally tested on a construction site with noise generated by a boring machine. Both numerical simulation and experimental results showed that this barrier with slanted flat-tip jagged cantilever would perform better than the traditional barrier having a Straight edge cantilever of same height, with a maximum additional attenuation of 5.0 dBA obtained experimentally. The barrier with a slanted flat-tip jagged cantilever could also extend the shadow zone behind the barrier to higher levels.

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Research on Effect of Noise Emission from Railway Viaduct on Noise Reduction of Noise Barriers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.433-440.1852 ◽

2012 ◽

Vol 433-440 ◽

pp. 1852-1856

Author(s):

Lei Ming Song ◽

Shou Guang Sun ◽

Xin Hua Zhang

Keyword(s):

Noise Reduction ◽

Microphone Array ◽

Field Testing ◽

Vibration Testing ◽

Noise Emission ◽

Noise Sources ◽

Noise Barriers ◽

Sources Identification ◽

Array Technology ◽

Noise Barrier

Noise sources identification based on microphone array theory was firstly introduced, A method was derived, which can be used to analyze effect of noise emission from railway viaduct to noise reduction of noise barriers. Vibration and noise emission of railway viaduct and noise barrier were studied using field testing with microphone array technology and vibration testing. The results concluded that noise emission from the viaduct has remarkable effects on noise reduction of noise barriers compared with the effects of noise emission from the noise barriers themselves, which is neglectable.

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Minimizing noise from metro viaduct railway lines by means of elastic mats and fully closed noise barriers

Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit ◽

10.1177/0954409717752200 ◽

2018 ◽

Vol 232 (6) ◽

pp. 1828-1836 ◽

Cited By ~ 4

Author(s):

Caiyou Zhao ◽

Wang Ping

Keyword(s):

Noise Reduction ◽

Vibration Energy ◽

Rail Transit ◽

In Situ Experiment ◽

Noise Barriers ◽

Transit Systems ◽

Slab Track ◽

Noise Barrier ◽

Reduction Effect

An adverse effect of urban elevated rail transit systems is the associated noise, which has become a source of environmental complaints. In order to effectively address this problem, an in situ experiment has been conducted on the elevated sections of Hangzhou Metro Line 1 involving three cases: a 2.2 m vertical noise barrier with integrated bed track, a 2.2 m vertical noise barrier with an elastic mat floating slab track, and a 5.1 m fully enclosed noise barrier with an elastic mat floating slab track. The noise reduction effects of the elastic mats and the two kinds of noise barriers for metro viaduct railway lines were evaluated, and the mechanisms of these countermeasures were analysed. The results show that elastic mats can effectively reduce the transmission of wheel–rail vibration energy into the bridge, thus decreasing bridge-borne noise; meanwhile, the elastic mats could lead to an increase in wheel–rail noise. An excellent noise reduction effect was achieved in the area below and near the bottom of the bridge, while an increased noise effect was observed close to the area above and near the rail surface. The fully enclosed noise barrier controlled the propagation of wheel–rail noise more effectively than the vertical noise barriers, but no difference was found between these two kinds of noise barriers in controlling bridge-borne noise.

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Key Points of Acoustic Consultation for Highway Noise barrier Design Optimization

E3S Web of Conferences ◽

10.1051/e3sconf/202014502008 ◽

2020 ◽

Vol 145 ◽

pp. 02008

Author(s):

Shufang Huang ◽

Zhiqiang Sun ◽

Huan Liu ◽

Yanqin Wang ◽

Minmin Yuan

Keyword(s):

Noise Reduction ◽

Traffic Noise ◽

Pollution Prevention ◽

Noise Pollution ◽

Acoustic Environment ◽

Technical Requirements ◽

Prevention Project ◽

Noise Barrier ◽

Reducing Costs ◽

The Cost

Noise barrier treatment is a traffic noise pollution prevention project. Many domestic residents along high-grade highways are densely distributed and there are many sensitive points in the acoustic environment. Traffic noise will have a large environmental impact along the route. The design of the noise barrier from the EIA stage to the construction stage is inconsistent with the actual situation. Therefore, in order to improve and optimize the noise reduction measures along the line and reasonably control the cost of the noise barrier project, many should be optimized. We shoud clarify the noise barrier installation location, scale, acoustic material technical requirements, standards, and engineering cost estimates, focusing on the principle of no reduction in noise reduction, strong operability, and economical practicality, in order to highlight the purpose of reducing costs and increasing efficiency.

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Case Study in Public Perception of Noise Barrier Effectiveness

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/1626-08 ◽

1998 ◽

Vol 1626 (1) ◽

pp. 67-70

Author(s):

Kenneth D. Polcak ◽

Andy Smith

Keyword(s):

Public Perception ◽

Precast Concrete ◽

Type I ◽

Noise Levels ◽

Noise Barriers ◽

Vehicle Noise ◽

The Us ◽

Noise Barrier ◽

Over The Top

I-97 and US-50 are the two major limited-access highways that connect Washington, D.C., and Baltimore to Annapolis (Maryland’s state capital). Three communities situated along US-50 and at the interchange with I-97 were considered for Type I noise barriers as the result of proposed widening and ramp additions to the highway network. Ultimately, precast concrete noise barriers were constructed in five sections on both sides of the highway in the area. Located just west of the US-50/I-97 interchange is the retirement community of Heritage Harbour. During development and construction of the community in the early and mid-1980s, the developer constructed two noncontiguous earth berms adjacent to but outside the highway right-of-way line. The noise barrier design concept developed for this project incorporated these existing earth berms into the overall US-50/I-97 barrier system. Barrier wall sections were designed to tie into both ends of the berms to mitigate flanking noise and ultimately to provide a “closed system” for the adjacent communities. STAMINA 2.0/OPTIMA modeling identified that the noise barrier construction would provide an additional 3- to 7-dBA insertion loss for homes situated near the berms. After construction of the US-50/I-97 noise barrier system, community members living directly behind the berms claimed that the new barrier walls were “funneling” noise over the top of the berms and causing the noise to be louder than it was before the barrier was constructed. The Maryland State Highway Administration monitored postbarrier noise levels in response to the community’s request. The monitored levels confirmed OPTIMA predicted noise levels and did not support claims that noise levels had become worse after barrier construction. Under prebarrier conditions, it was hypothesized that noise particularly from heavy vehicles unshielded by the existing berms was substantial enough that vehicle noise passing over the berms was being masked, so that the source direction was not always discernible. Once the “flanking noise” was abated by the barrier walls, vehicle noise passing over the berms dominated. The results of the noise monitoring and an explanation of identified phenomenon were successfully presented to the community. The case study presents the US-50/I-97 berm/barrier public perception issues, discusses the project’s applicability to previous “public noise perception” research, and suggests public involvement techniques that could prepare communities for unique acoustic situations.

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An Approach to the Design of Photovoltaic Noise Barriers and a Case Study From Istanbul, Turkey

10.21203/rs.3.rs-266673/v1 ◽

2021 ◽

Author(s):

ferhan hasmaden ◽

Gülay Zorer Gedik ◽

Neşe Yüğrük Akdağ

Keyword(s):

Solar Energy ◽

Electricity Generation ◽

Noise Control ◽

Heavy Traffic ◽

Integrated Design ◽

Energy Generation ◽

Control Measures ◽

Noise Barriers ◽

Noise Barrier

Abstract Solar energy solutions that do not require additional space are critical. Noise barriers, which are built in low-value lands next to noise sources, provide effective areas for PV modules. There are many studies on using noise barriers as a sub-structure for photovoltaic systems, providing electricity generation besides noise reduction targets. Photovoltaic Noise Barrier (PVNB) technology combines noise control measures with renewable energy generation. In this study, it is aimed to develop an integrated design method that embeds solar energy technology in noise protection structures. The method is exemplified in an existing settlement located on the side of the road with heavy traffic. According to local climate and solar data, optimum tilt angles have been determined for annual, semi-annual, seasonal, and monthly periods. Noise barrier alternatives are derived with combinations of different diffraction edge sizes of barrier top and determined optimum inclination angles. The performance of the criteria that affect the PVNB effectiveness for alternatives was calculated through software tools. The energy generation potential of PVNB and its shading in adjacent blocks were calculated with PVsyst 6.7.7. The noise control efficiency of the structure was computed via SoundPLAN 7.2. TOPSIS method one of the most common multi-criteria decision-making technique (MCDM) was used in the evaluation. As a result of TOPSIS, the best PVNB solution in the case study is the alternative that has 3m and 2m wide edges; 58 ° and 31 ° tilted edges. Comparison with the current situation, the selected alternative will decrease %44 the number of receiving points affected by noise and provide 524804 kWh annual electricity generation.

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EVALUATION OF NOISE ATTENUATION OF BARRIERS WITH GREENERY IN THE CZECH REPUBLIC

Akustika ◽

10.36336/akustika2021408 ◽

2021 ◽

pp. 8-17

Author(s):

Petra Marková ◽

Vítězslav Křivánek ◽

Blanka Hablovičová ◽

Jindřich Frič

Keyword(s):

Czech Republic ◽

Growing Season ◽

Noise Attenuation ◽

Short Term ◽

Noise Barriers ◽

The Czech Republic ◽

Measurement Results ◽

Different Types ◽

Noise Barrier

The article is focused on the measurements of different types of “environmental” built noise barriers (semi-vegetation, green belt, barriers with vegetation) which were measured in the different places in the Czech Republic. In situ measuring was carried out in accordance with the standard ISO 1996. Short-term synchronous measurements were carried out in front of and behind the noise barrier and the effectiveness of noise barriers was determined. The measurement results show a slight increase in acute attenuation in anti-noise elements using vegetation. During the growing season, when greening occurs, a more pronounced acoustic attenuation compared to dormancy has been clearly demonstrated. This research was supported by the Ministry of Transport of the Czech Republic.

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