Tunnels with rough walls and cavities
Often the finishing surfaces of road tunnels (both gables and vaults) present not only important uniform roughness, but even holes that can be numerous and with significant size: usually in uncoated tunnel is where most uniform and major irregularities can be found whilst in rock tunnels excavated w...
| Main Authors: | , , |
|---|---|
| Format: | Online |
| Language: | spa |
| Published: |
Universidad Pedagógica y Tecnológica de Colombia - UPTC
2014
|
| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/3939 |
| _version_ | 1801706687262883840 |
|---|---|
| author | Vigne, Gabriele Jönsson, Jimmy Hacar, Fernando |
| author_facet | Vigne, Gabriele Jönsson, Jimmy Hacar, Fernando |
| author_sort | Vigne, Gabriele |
| collection | OJS |
| description | Often the finishing surfaces of road tunnels (both gables and vaults) present not only important uniform roughness, but even holes that can be numerous and with significant size: usually in uncoated tunnel is where most uniform and major irregularities can be found whilst in rock tunnels excavated with blasting is where most holes can be found. This results in frictions coefficients with the tunnel walls that can be very high. The friction generated by the airflow in the ventilation can result in very important aerodynamic thrust requirements (with ventilation through jet-fans), which imply significant power consumption. Pressure losses in rugous tunnels and with the presence of cavities are analyzed for road tunnels with longitudinal ventilation through jet-fans, evaluating the aerodynamic thrust required to counter the corresponding losses. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-3939 |
| institution | Revista Ingeniería, Investigación y Desarrollo |
| language | spa |
| publishDate | 2014 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia - UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-39392017-06-28T23:14:58Z Tunnels with rough walls and cavities Túneles con paramentos rugosos y con cavidades Vigne, Gabriele Jönsson, Jimmy Hacar, Fernando tunnels rugosity cavities. túneles rugosidad cavidades Often the finishing surfaces of road tunnels (both gables and vaults) present not only important uniform roughness, but even holes that can be numerous and with significant size: usually in uncoated tunnel is where most uniform and major irregularities can be found whilst in rock tunnels excavated with blasting is where most holes can be found. This results in frictions coefficients with the tunnel walls that can be very high. The friction generated by the airflow in the ventilation can result in very important aerodynamic thrust requirements (with ventilation through jet-fans), which imply significant power consumption. Pressure losses in rugous tunnels and with the presence of cavities are analyzed for road tunnels with longitudinal ventilation through jet-fans, evaluating the aerodynamic thrust required to counter the corresponding losses. En muchas ocasiones las superficies finales de los túneles de carretera (tanto los hastiales, como la bóveda) resultan no solo con rugosidades uniformes importantes, también con huecos más o menos numerosos y más o menos considerables: generalmente en túneles sin revestir es donde más se presentan las irregularidades uniformes importantes, y en túneles en roca excavados con voladuras es donde más se manifiestan los huecos. Esto da lugar a coeficientes de fricción con las paredes del túnel que pueden ser muy elevados. La fricción que se produce al paso del aire en la ventilación puede dar lugar a necesidades de empujes aerodinámicos (con ventilación con jet-fan) muy importantes, esto es, a consumos de energía eléctrica significativos. Para túneles de carretera con ventilación longitudinal con jet-fan se analizan las pérdidas de carga de túneles rugosos y con cavidades, y se evalúan los empujes aerodinámicos necesarios para contrarrestar las correspondientes pérdidas de carga. Universidad Pedagógica y Tecnológica de Colombia - UPTC 2014-12-20 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/3939 10.19053/1900771X.3939 Ingeniería Investigación y Desarrollo; Vol. 15 No. 1: enero-junio de 2015; 58-69 Ingeniería Investigación y Desarrollo; Vol. 15 Núm. 1: enero-junio de 2015; 58-69 2422-4324 1900-771X spa https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/3939/3418 Derechos de autor 2015 Ingeniería Investigación y Desarrollo |
| spellingShingle | tunnels rugosity cavities. túneles rugosidad cavidades Vigne, Gabriele Jönsson, Jimmy Hacar, Fernando Tunnels with rough walls and cavities |
| title | Tunnels with rough walls and cavities |
| title_alt | Túneles con paramentos rugosos y con cavidades |
| title_full | Tunnels with rough walls and cavities |
| title_fullStr | Tunnels with rough walls and cavities |
| title_full_unstemmed | Tunnels with rough walls and cavities |
| title_short | Tunnels with rough walls and cavities |
| title_sort | tunnels with rough walls and cavities |
| topic | tunnels rugosity cavities. túneles rugosidad cavidades |
| topic_facet | tunnels rugosity cavities. túneles rugosidad cavidades |
| url | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/3939 |
| work_keys_str_mv | AT vignegabriele tunnelswithroughwallsandcavities AT jonssonjimmy tunnelswithroughwallsandcavities AT hacarfernando tunnelswithroughwallsandcavities AT vignegabriele tunelesconparamentosrugososyconcavidades AT jonssonjimmy tunelesconparamentosrugososyconcavidades AT hacarfernando tunelesconparamentosrugososyconcavidades |
