Study of control methods and improvement measures on low frequen
「Study of control methods and improvement measures on low frequen」於資料集「EPQSummary_NoiseAndVibration」由單位「行政院環境保護署」的陳先生所提供，聯繫電話是02-2311-7722#2386，最近更新時間為：2023-07-30 01:01:50。 欄位Project Title的內容是Study of control methods and improvement measures on low frequency noise produced by land transporta ， 欄位Project Subject的內容是In recent years, overpass projects have been frequently seen in the construction of freeways and expressways in our country and long-span or continuous beam bridges have been mostly adopted for new bridges, therefore the type and gap of expansion joints have become increasingly innovative and expansive, and the structure more complicated, resulting in more frequent and obvious damages of expansion joints. As for the maintenance and replacement of bridge expansion joints, it is not only difficult but also very dangerous to maintain traffic during work. Particularly, it is not easy to ensure maintenance quality working under open traffic stress, with vibration caused by traffic flow, and in a confined space. In the meantime, extremely high social cost and price will be paid for the maintenance work. Presently, the biggest problem that challenges driving safety and comfort lies in the unevenness or damage of the expansion joints on freeways and expressways, which not only cause noises affecting the living quality of residents on both sides of the road, but also decrease the comfort and safety of driving on freeways and expressways. In view of the fact that the bridge expansion joints on freeways and expressways have caused problems one after another, the residents along the line have repeatedly petitioned against the noise caused by cars driving pass the expansion joints, and the bumps and jumps produced by the expansion joints have caused discomfort to drivers passing by, it is necessary to make a thorough inquiry of the jumps and noises caused by the expansion joints. Content of the project includes collecting information on the control methods for expansion joints on freeways and expressways adopted by foreign countries, conducting low frequency noise measurement for overpass expansion joints on freeways and expressways, formulating improvement measures for our country based on measuring results, analyzing the type, number, and handling of petitions against noises caused by overpass expansion joints on freeways and expressways in our country, and proposing goals for regulations on improvement.
The achievements of the 2011 study of control methods and improvement measures on low frequency noise produced by land transportation system (overpass expansion joints) include:
1. Collected information on the control methods, noise properties, low frequency noise-related issues, noise mitigation measures, noise control techniques, noise measuring methods, and related regulations for overpass expansion joints on freeways and expressways in foreign countries.
2. Completed low frequency noise measurement for overpass expansion joints on freeways and expressways as follows:
(1)Measured low frequency noise of overpass expansion joints on freeways at 7 locations (totally 36 measurements) and statistically analyzed their results.
(2)Measured low frequency noise of overpass expansion joints on expressways at 6 locations (totally 22 measurements) and statistically analyzed their results.
3.Formulated improvement measures for our country based on measuring results and proposed countermeasures, control techniques, control methods, and improvement measures for overpass expansion joints on freeways and expressways.
4.Analyzed the type, number, and handling of petitions against noises caused by overpass expansion joints on freeways and expressways in our country, and proposed improvement regulations. ， 欄位Project Year的內容是2011 ， 欄位Organizer的內容是Department of Air Quality Protection ＆amp; Noise Control ， 欄位Executive Unit的內容是國立暨南國際大學 ， 欄位Reporting download URL的內容是https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=30641&proj_id=1005276156&doc_kind=1 ， 欄位Publish Date的內容是20120301 。
Project Title
Study of control methods and improvement measures on low frequency noise produced by land transporta
Project Subject
In recent years, overpass projects have been frequently seen in the construction of freeways and expressways in our country and long-span or continuous beam bridges have been mostly adopted for new bridges, therefore the type and gap of expansion joints have become increasingly innovative and expansive, and the structure more complicated, resulting in more frequent and obvious damages of expansion joints. As for the maintenance and replacement of bridge expansion joints, it is not only difficult but also very dangerous to maintain traffic during work. Particularly, it is not easy to ensure maintenance quality working under open traffic stress, with vibration caused by traffic flow, and in a confined space. In the meantime, extremely high social cost and price will be paid for the maintenance work. Presently, the biggest problem that challenges driving safety and comfort lies in the unevenness or damage of the expansion joints on freeways and expressways, which not only cause noises affecting the living quality of residents on both sides of the road, but also decrease the comfort and safety of driving on freeways and expressways. In view of the fact that the bridge expansion joints on freeways and expressways have caused problems one after another, the residents along the line have repeatedly petitioned against the noise caused by cars driving pass the expansion joints, and the bumps and jumps produced by the expansion joints have caused discomfort to drivers passing by, it is necessary to make a thorough inquiry of the jumps and noises caused by the expansion joints. Content of the project includes collecting information on the control methods for expansion joints on freeways and expressways adopted by foreign countries, conducting low frequency noise measurement for overpass expansion joints on freeways and expressways, formulating improvement measures for our country based on measuring results, analyzing the type, number, and handling of petitions against noises caused by overpass expansion joints on freeways and expressways in our country, and proposing goals for regulations on improvement. The achievements of the 2011 study of control methods and improvement measures on low frequency noise produced by land transportation system (overpass expansion joints) include: 1. Collected information on the control methods, noise properties, low frequency noise-related issues, noise mitigation measures, noise control techniques, noise measuring methods, and related regulations for overpass expansion joints on freeways and expressways in foreign countries. 2. Completed low frequency noise measurement for overpass expansion joints on freeways and expressways as follows: (1)Measured low frequency noise of overpass expansion joints on freeways at 7 locations (totally 36 measurements) and statistically analyzed their results. (2)Measured low frequency noise of overpass expansion joints on expressways at 6 locations (totally 22 measurements) and statistically analyzed their results. 3.Formulated improvement measures for our country based on measuring results and proposed countermeasures, control techniques, control methods, and improvement measures for overpass expansion joints on freeways and expressways. 4.Analyzed the type, number, and handling of petitions against noises caused by overpass expansion joints on freeways and expressways in our country, and proposed improvement regulations.
Project Year
2011
Organizer
Department of Air Quality Protection ＆amp; Noise Control
Executive Unit
國立暨南國際大學
Reporting download URL
https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=30641&proj_id=1005276156&doc_kind=1
Publish Date
20120301
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