On reducing the level of vibration transmitted by transport to the environment
The paper considers problems in reducing the vibration activity of modern rail transport networks in big cities, primarily, the metro system, which provides the biggest carriage of passengers. The growing intensity of traffic in the lines and the ever-increasing load and necessity of building new su...
Збережено в:
| Дата: | 2015 |
|---|---|
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | Russian |
| Опубліковано: |
Journal of Mechanical Engineering
2015
|
| Теми: | |
| Онлайн доступ: | https://journals.uran.ua/jme/article/view/43790 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Journal of Mechanical Engineering |
Репозитарії
Journal of Mechanical Engineering| id |
journalsuranuajme-article-43790 |
|---|---|
| record_format |
ojs |
| institution |
Journal of Mechanical Engineering |
| collection |
OJS |
| language |
Russian |
| topic |
УДК 53.99.02 УДК 53.99.02 УДК 53.99.02 |
| spellingShingle |
УДК 53.99.02 УДК 53.99.02 УДК 53.99.02 Божко, A. Е. Крупенин, В. Л. Мугин, О. О. Мягкохлеб, К. Б. On reducing the level of vibration transmitted by transport to the environment |
| topic_facet |
УДК 53.99.02 УДК 53.99.02 УДК 53.99.02 |
| format |
Article |
| author |
Божко, A. Е. Крупенин, В. Л. Мугин, О. О. Мягкохлеб, К. Б. |
| author_facet |
Божко, A. Е. Крупенин, В. Л. Мугин, О. О. Мягкохлеб, К. Б. |
| author_sort |
Божко, A. Е. |
| title |
On reducing the level of vibration transmitted by transport to the environment |
| title_short |
On reducing the level of vibration transmitted by transport to the environment |
| title_full |
On reducing the level of vibration transmitted by transport to the environment |
| title_fullStr |
On reducing the level of vibration transmitted by transport to the environment |
| title_full_unstemmed |
On reducing the level of vibration transmitted by transport to the environment |
| title_sort |
on reducing the level of vibration transmitted by transport to the environment |
| title_alt |
Снижение уровня вибрации, передаваемой транспортом в окружающую среду |
| description |
The paper considers problems in reducing the vibration activity of modern rail transport networks in big cities, primarily, the metro system, which provides the biggest carriage of passengers. The growing intensity of traffic in the lines and the ever-increasing load and necessity of building new subway lines, as well as of other kinds of rapid-transit rail transport (monorail roads, express tramways, and others) dictates the necessity to account for the possible impact of transport facilities on the surrounding buildings. Hence, recently, more strict norms are being introduced to relevant regulatory documents. They regulate the definitive physical parameters of vibration and noise admissible in urban rail transport. Metro system shallow subway lines are known to be a source of increased vibration, which propagates in the ground and is transmitted to the foundations of buildings located in the metro system land allocation area. Therefore, it is critical to reduce the level of vibrations and structural noise in the development area adjacent to the metro system lines being projected and built. Different technical solutions based on conventional vibration isolation schemes are not always effective. A development is known with a sleeper track design using separate rubber cushions. A technical solution is known, which is based on the design of the German firm GERB with the usage of metal springs. Also known are methods based on using rubber mats. All these solutions fail to meet sanitary norms. The design of a track vibration isolation system using any elastic elements has a service constraint. The track deflection under the weight of a car shall not exceed 4 mm. Hence, the eigen frequency of the entire mechanical system train - track – vibration isolation – tunnel lining - ground cannot be lower than 8 to 10 Hz. Hence, the vibration isolation factors for common vibration isolation schemes are insufficient. It is necessary to ensure stiffness with track depression within 4 mm and increase the level of vibration isolation at the same time. Presently, the metro system has no track vibration isolation system whose design would meet sanitary norm requirements to vibration and structural noise. The paper addresses the problem of suppressing vibrations created by metro trains. Vibrations occurring due to interaction of the railway train and rails in the railwheel point of contact are reduced by placing hydraulic vibration isolators with inner inertial elements under the track structure. The study builds models of systems of the metro stock. It is investigated using dynamic stiffness methods for both the case of using vibration isolators and without them. The result is comapred against experimental data. The vibration oscillation effect is predicted to increase (by 6 to 30 dB) whilst retaining the required static stiffness value. |
| publisher |
Journal of Mechanical Engineering |
| publishDate |
2015 |
| url |
https://journals.uran.ua/jme/article/view/43790 |
| work_keys_str_mv |
AT božkoae onreducingthelevelofvibrationtransmittedbytransporttotheenvironment AT krupeninvl onreducingthelevelofvibrationtransmittedbytransporttotheenvironment AT muginoo onreducingthelevelofvibrationtransmittedbytransporttotheenvironment AT mâgkohlebkb onreducingthelevelofvibrationtransmittedbytransporttotheenvironment AT božkoae sniženieurovnâvibraciiperedavaemojtransportomvokružaûŝuûsredu AT krupeninvl sniženieurovnâvibraciiperedavaemojtransportomvokružaûŝuûsredu AT muginoo sniženieurovnâvibraciiperedavaemojtransportomvokružaûŝuûsredu AT mâgkohlebkb sniženieurovnâvibraciiperedavaemojtransportomvokružaûŝuûsredu |
| first_indexed |
2024-06-01T14:42:42Z |
| last_indexed |
2024-06-01T14:42:42Z |
| _version_ |
1800670242407448576 |
| spelling |
journalsuranuajme-article-437902015-06-05T16:16:36Z On reducing the level of vibration transmitted by transport to the environment Снижение уровня вибрации, передаваемой транспортом в окружающую среду Божко, A. Е. Крупенин, В. Л. Мугин, О. О. Мягкохлеб, К. Б. УДК 53.99.02 УДК 53.99.02 УДК 53.99.02 The paper considers problems in reducing the vibration activity of modern rail transport networks in big cities, primarily, the metro system, which provides the biggest carriage of passengers. The growing intensity of traffic in the lines and the ever-increasing load and necessity of building new subway lines, as well as of other kinds of rapid-transit rail transport (monorail roads, express tramways, and others) dictates the necessity to account for the possible impact of transport facilities on the surrounding buildings. Hence, recently, more strict norms are being introduced to relevant regulatory documents. They regulate the definitive physical parameters of vibration and noise admissible in urban rail transport. Metro system shallow subway lines are known to be a source of increased vibration, which propagates in the ground and is transmitted to the foundations of buildings located in the metro system land allocation area. Therefore, it is critical to reduce the level of vibrations and structural noise in the development area adjacent to the metro system lines being projected and built. Different technical solutions based on conventional vibration isolation schemes are not always effective. A development is known with a sleeper track design using separate rubber cushions. A technical solution is known, which is based on the design of the German firm GERB with the usage of metal springs. Also known are methods based on using rubber mats. All these solutions fail to meet sanitary norms. The design of a track vibration isolation system using any elastic elements has a service constraint. The track deflection under the weight of a car shall not exceed 4 mm. Hence, the eigen frequency of the entire mechanical system train - track – vibration isolation – tunnel lining - ground cannot be lower than 8 to 10 Hz. Hence, the vibration isolation factors for common vibration isolation schemes are insufficient. It is necessary to ensure stiffness with track depression within 4 mm and increase the level of vibration isolation at the same time. Presently, the metro system has no track vibration isolation system whose design would meet sanitary norm requirements to vibration and structural noise. The paper addresses the problem of suppressing vibrations created by metro trains. Vibrations occurring due to interaction of the railway train and rails in the railwheel point of contact are reduced by placing hydraulic vibration isolators with inner inertial elements under the track structure. The study builds models of systems of the metro stock. It is investigated using dynamic stiffness methods for both the case of using vibration isolators and without them. The result is comapred against experimental data. The vibration oscillation effect is predicted to increase (by 6 to 30 dB) whilst retaining the required static stiffness value. Рассматривается проблема подавления вибрации, создаваемой поездами метрополитена. Снижение вибрации, возникающей при взаимодействии железнодорожного состава и рельсов в контакте "рельс-колесо", осуществляется посредством размещения под верхним строением пути гидравлических виброизоляторов с внутренними инерционными элементами. Прогнозируется усиление эффекта виброизоляции (на 6–30 дБ) при сохранении необходимой величины статической жесткости. Розглядається проблема заглушення вібрації, що створюється потягами метрополітену. Зниження вібрації, що виникає при взаємодії залізничного складу і рейок в контакті "рейка-колесо" здійснюється через розміщення під верхньою будовою колії гідравлічних віброізоляторів з внутрішніми інерційними елементами. Прогнозується посилення ефекту віброізоляції (на 6–30 дБ) при збереженні необхідної величини статичної жорсткості. Journal of Mechanical Engineering Проблемы машиностроения Проблеми машинобудування 2015-06-03 Article Article application/pdf https://journals.uran.ua/jme/article/view/43790 Journal of Mechanical Engineering; Vol. 16 No. 4 (2013); 3-8 Проблемы машиностроения; Том 16 № 4 (2013); 3-8 Проблеми машинобудування; Том 16 № 4 (2013); 3-8 2709-2992 2709-2984 ru https://journals.uran.ua/jme/article/view/43790/40080 Copyright (c) 2015 A. Е. Божко, В. Л. Крупенин, О. О. Мугин, К. Б. Мягкохлеб https://creativecommons.org/licenses/by-nd/4.0 |