Pub Date : 2012-11-01DOI: 10.1088/2058-7058/25/11/33
Prabhjeet Singh, David L. Jeakle
This article takes a look at specific design challenges for bridges that cross over monsoon-affected rivers in India and the ways in which these challenges are being overcome. One of the main concerns is stability of the piers and foundations due to the risk of scour; another is stream velocity, which in combination with high winds and seismic demands, can impose significant horizontal demands on the foundations. The use of deep piled foundations or drilled shafts is an emerging alternative. Various methods used to accelerate the construction schedule are also discussed. The term "extradosed" is used to describe the system that accelerates the process.
{"title":"Walking on water","authors":"Prabhjeet Singh, David L. Jeakle","doi":"10.1088/2058-7058/25/11/33","DOIUrl":"https://doi.org/10.1088/2058-7058/25/11/33","url":null,"abstract":"This article takes a look at specific design challenges for bridges that cross over monsoon-affected rivers in India and the ways in which these challenges are being overcome. One of the main concerns is stability of the piers and foundations due to the risk of scour; another is stream velocity, which in combination with high winds and seismic demands, can impose significant horizontal demands on the foundations. The use of deep piled foundations or drilled shafts is an emerging alternative. Various methods used to accelerate the construction schedule are also discussed. The term \"extradosed\" is used to describe the system that accelerates the process.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116091268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1108/978-1-78714-206-020171009
H. Russell
Canada's Lions Gate Bridge in Vancouver is in the process of undergoing a $63.4 million refurbishment project; the contract was awarded in April 1999 and completion is anticipated in December 2001. The article reviews the progress of the deck replacement of this major suspension bridge. The work essentially involves the replacement of the entire suspended structure, stiffening truss, sidewalk, and hangers during strictly limited number of night time closures.
{"title":"ALL HANDS ON DECK","authors":"H. Russell","doi":"10.1108/978-1-78714-206-020171009","DOIUrl":"https://doi.org/10.1108/978-1-78714-206-020171009","url":null,"abstract":"Canada's Lions Gate Bridge in Vancouver is in the process of undergoing a $63.4 million refurbishment project; the contract was awarded in April 1999 and completion is anticipated in December 2001. The article reviews the progress of the deck replacement of this major suspension bridge. The work essentially involves the replacement of the entire suspended structure, stiffening truss, sidewalk, and hangers during strictly limited number of night time closures.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"261 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123690439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1162/wopj.2008.25.3.228
N. Miller, J. Walker, J. Coleman
Spend your few moment to read a book even only few pages. Reading book is not obligation and force for everybody. When you don't want to read, you can get punishment from the publisher. Read a book becomes a choice of your different characteristics. Many people with reading habit will always be enjoyable to read, or on the contrary. For some reasons, this end of an era tends to be the representative book in this website.
{"title":"End of an Era","authors":"N. Miller, J. Walker, J. Coleman","doi":"10.1162/wopj.2008.25.3.228","DOIUrl":"https://doi.org/10.1162/wopj.2008.25.3.228","url":null,"abstract":"Spend your few moment to read a book even only few pages. Reading book is not obligation and force for everybody. When you don't want to read, you can get punishment from the publisher. Read a book becomes a choice of your different characteristics. Many people with reading habit will always be enjoyable to read, or on the contrary. For some reasons, this end of an era tends to be the representative book in this website.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123758479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1002/9781119206026.ch2
M. Yashinsky
Movable bridges are vulnerable even to small earthquakes as the mechanisms that allow the bridge to move as well as the shims, guides, and locks that close the bridge are easily damaged. The article discusses the requirements for the design of new movable bridges that must have at least 50% of the inertial force even when the bridge is open less than 10% of the time. The key to retrofitting movable bridges is that the retrofit allow the bridge to move during the earthquake and thus preventing it from collapsing as a result of those motions. Examples are provided to show how this principle was used on different movable bridge retrofits.
{"title":"MOVERS AND SHAKERS","authors":"M. Yashinsky","doi":"10.1002/9781119206026.ch2","DOIUrl":"https://doi.org/10.1002/9781119206026.ch2","url":null,"abstract":"Movable bridges are vulnerable even to small earthquakes as the mechanisms that allow the bridge to move as well as the shims, guides, and locks that close the bridge are easily damaged. The article discusses the requirements for the design of new movable bridges that must have at least 50% of the inertial force even when the bridge is open less than 10% of the time. The key to retrofitting movable bridges is that the retrofit allow the bridge to move during the earthquake and thus preventing it from collapsing as a result of those motions. Examples are provided to show how this principle was used on different movable bridge retrofits.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115204428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1080/05331846609438403
J. Wood
The risks posed by deteriorating and substandard bridges, which cannot easily be inspected, provide a major challenge to the engineering profession and to those governments which resource maintenance work. The cost and disruption of investigations and costs associated with premature remedial or replacement work also make it essential to improve investigation and assessment procedures. If risks are to be correctly identified before failures occur, and remedial work is to be done effectively, research is needed to develop and disseminate best practice for engineers and material scientists in 3 areas. This article outlines and discusses these 3 areas: 1) identification of hidden defects arising from design, construction, or deterioration; 2) quantification of effects of deterioration on strength, robustness, and serviceability; and 3) defining limits of acceptable deterioration. A more rigorous investigation of deteriorating and collapsed structures using forensic techniques can provide essential information for developing improved inspection and assessment procedures for aging infrastructure, and should be based on fieldwork or rigorous lab examination and testing of large samples.
{"title":"Spreading the Word","authors":"J. Wood","doi":"10.1080/05331846609438403","DOIUrl":"https://doi.org/10.1080/05331846609438403","url":null,"abstract":"The risks posed by deteriorating and substandard bridges, which cannot easily be inspected, provide a major challenge to the engineering profession and to those governments which resource maintenance work. The cost and disruption of investigations and costs associated with premature remedial or replacement work also make it essential to improve investigation and assessment procedures. If risks are to be correctly identified before failures occur, and remedial work is to be done effectively, research is needed to develop and disseminate best practice for engineers and material scientists in 3 areas. This article outlines and discusses these 3 areas: 1) identification of hidden defects arising from design, construction, or deterioration; 2) quantification of effects of deterioration on strength, robustness, and serviceability; and 3) defining limits of acceptable deterioration. A more rigorous investigation of deteriorating and collapsed structures using forensic techniques can provide essential information for developing improved inspection and assessment procedures for aging infrastructure, and should be based on fieldwork or rigorous lab examination and testing of large samples.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132082306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to ensure that structural health monitoring (SHM) systems provide optimal benefit for bridge owners and that there is standardization of data storage systems and ownership, long term strategies are required. With many players in the instrumentation world that accompanies SHM, the proper overall perspective is crucial. The decision must be made whether to hire a system provider to propose the SHM system or to turn to a research institution; and in terms of data storage, the answer is not any clearer, with a multitude of formats and servers available. Technologies must be reviewed and standards developed for SHM systems, with an urgent need for data formatting standards, data storage standards and agreements between owners and suppliers. SHM should be considered a long term strategy to provide a better understanding of the real world behavior of structures, not as a way of getting instant results.
{"title":"The Data Game","authors":"M. Schmieder","doi":"10.4324/9781315700007","DOIUrl":"https://doi.org/10.4324/9781315700007","url":null,"abstract":"In order to ensure that structural health monitoring (SHM) systems provide optimal benefit for bridge owners and that there is standardization of data storage systems and ownership, long term strategies are required. With many players in the instrumentation world that accompanies SHM, the proper overall perspective is crucial. The decision must be made whether to hire a system provider to propose the SHM system or to turn to a research institution; and in terms of data storage, the answer is not any clearer, with a multitude of formats and servers available. Technologies must be reviewed and standards developed for SHM systems, with an urgent need for data formatting standards, data storage standards and agreements between owners and suppliers. SHM should be considered a long term strategy to provide a better understanding of the real world behavior of structures, not as a way of getting instant results.","PeriodicalId":406185,"journal":{"name":"Bridge Design & Engineering","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127431247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：