Wind-induced oscillations of groups of bridge stay-cables
An experimental study of wind-induced oscillations of groups of bridge stay-cables was conducted in two wind tunnels, one in Japan and one in Canada, to develop a method for suppressing the instability. At first, the parallel cable models were connected rigidly to each other with spacers, forming a...
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| Veröffentlicht in: | Journal of wind engineering and industrial aerodynamics 1995-02, Vol.54, p.251-262 |
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| container_title | Journal of wind engineering and industrial aerodynamics |
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| creator | Yoshimura, T. Savage, M.G. Tanaka, H. Urano, D. |
| description | An experimental study of wind-induced oscillations of groups of bridge stay-cables was conducted in two wind tunnels, one in Japan and one in Canada, to develop a method for suppressing the instability. At first, the parallel cable models were connected rigidly to each other with spacers, forming a coupled cable group whose surface-to-surface separation, or gap, could be varied from 0 to 2 cable diameters. This modification stabilized the wake galloping but it was found that a different form of instability then occurred at higher wind speeds. In this case the group of cables, rather than just the downwind cable, was unstable. With zero gap, the group was most stable, being unstable only near wind angles of 5° and aerodynamically stable otherwise. When the cable group with zero gap was twisted into a shallow helix, it was found to be aerodynamically stable for all wind angles. |
| doi_str_mv | 10.1016/0167-6105(94)00045-F |
| format | Article |
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At first, the parallel cable models were connected rigidly to each other with spacers, forming a coupled cable group whose surface-to-surface separation, or gap, could be varied from 0 to 2 cable diameters. This modification stabilized the wake galloping but it was found that a different form of instability then occurred at higher wind speeds. In this case the group of cables, rather than just the downwind cable, was unstable. With zero gap, the group was most stable, being unstable only near wind angles of 5° and aerodynamically stable otherwise. When the cable group with zero gap was twisted into a shallow helix, it was found to be aerodynamically stable for all wind angles.</description><identifier>ISSN: 0167-6105</identifier><identifier>EISSN: 1872-8197</identifier><identifier>DOI: 10.1016/0167-6105(94)00045-F</identifier><identifier>CODEN: JWEAD6</identifier><language>eng</language><publisher>Amsterdam: Elsevier Ltd</publisher><subject>Aerodynamics ; Applied sciences ; Bridges ; Buildings. Public works ; Exact sciences and technology ; Mathematical models ; Q1 ; Suspension bridges. Stayed girder bridges. Bascule bridges. 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At first, the parallel cable models were connected rigidly to each other with spacers, forming a coupled cable group whose surface-to-surface separation, or gap, could be varied from 0 to 2 cable diameters. This modification stabilized the wake galloping but it was found that a different form of instability then occurred at higher wind speeds. In this case the group of cables, rather than just the downwind cable, was unstable. With zero gap, the group was most stable, being unstable only near wind angles of 5° and aerodynamically stable otherwise. When the cable group with zero gap was twisted into a shallow helix, it was found to be aerodynamically stable for all wind angles.</description><subject>Aerodynamics</subject><subject>Applied sciences</subject><subject>Bridges</subject><subject>Buildings. Public works</subject><subject>Exact sciences and technology</subject><subject>Mathematical models</subject><subject>Q1</subject><subject>Suspension bridges. Stayed girder bridges. 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Public works</topic><topic>Exact sciences and technology</topic><topic>Mathematical models</topic><topic>Q1</topic><topic>Suspension bridges. Stayed girder bridges. Bascule bridges. Swing bridges</topic><topic>Wind tunnels</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoshimura, T.</creatorcontrib><creatorcontrib>Savage, M.G.</creatorcontrib><creatorcontrib>Tanaka, H.</creatorcontrib><creatorcontrib>Urano, D.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of wind engineering and industrial aerodynamics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoshimura, T.</au><au>Savage, M.G.</au><au>Tanaka, H.</au><au>Urano, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Wind-induced oscillations of groups of bridge stay-cables</atitle><jtitle>Journal of wind engineering and industrial aerodynamics</jtitle><date>1995-02-01</date><risdate>1995</risdate><volume>54</volume><spage>251</spage><epage>262</epage><pages>251-262</pages><issn>0167-6105</issn><eissn>1872-8197</eissn><coden>JWEAD6</coden><abstract>An experimental study of wind-induced oscillations of groups of bridge stay-cables was conducted in two wind tunnels, one in Japan and one in Canada, to develop a method for suppressing the instability. At first, the parallel cable models were connected rigidly to each other with spacers, forming a coupled cable group whose surface-to-surface separation, or gap, could be varied from 0 to 2 cable diameters. This modification stabilized the wake galloping but it was found that a different form of instability then occurred at higher wind speeds. In this case the group of cables, rather than just the downwind cable, was unstable. With zero gap, the group was most stable, being unstable only near wind angles of 5° and aerodynamically stable otherwise. When the cable group with zero gap was twisted into a shallow helix, it was found to be aerodynamically stable for all wind angles.</abstract><cop>Amsterdam</cop><pub>Elsevier Ltd</pub><doi>10.1016/0167-6105(94)00045-F</doi><tpages>12</tpages></addata></record> |
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| ispartof | Journal of wind engineering and industrial aerodynamics, 1995-02, Vol.54, p.251-262 |
| issn | 0167-6105 1872-8197 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aerodynamics Applied sciences Bridges Buildings. Public works Exact sciences and technology Mathematical models Q1 Suspension bridges. Stayed girder bridges. Bascule bridges. Swing bridges Wind tunnels |
| title | Wind-induced oscillations of groups of bridge stay-cables |
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