Simplified Computational Methodology For Analysis And Studies On Behaviour Of Incrementally Launched Continuous Bridges
IR@SERC: CSIR-Structural Engineering Research Centre, Chennai
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Title |
Simplified Computational Methodology For Analysis And Studies On Behaviour Of Incrementally Launched Continuous Bridges
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Creator |
Saptarshi Sasmal
Ramanjaneyulu, K. Srinivas, V. Gopalakrishnan, S. |
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Subject |
Incrementally launched continuous bridge
Construction phase analysis Transfer matrix Optimisation Thermal analysis Settlement analysis Launching nose Nose-deck interaction Length ratio Load ratio Stiffness |
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Description |
Incremental launching method is one of the highly competitive techniques for construction of concrete bridges. It avoids costly and time consuming form work and centralizes all construction activities in a small casting yard, thus saving in cost and time against conventional bridge construction. From the quality point of view, it eliminates the uncertainty of monolithic behaviour by allowing high repetitiveness and industrial environment. But, from analysis and design point of view, the most characteristic aspect of incrementally launched bridges is that, it has to absorb the stresses associated with the temporary supports that are gradually taken on by the deck during its launch. So, it is necessary to analyse the structure for each step of launching which is a tedious and time consuming process. Effect of support settlements or temperature variation makes the problem more complex. By using transfer matrix method, this problem can be handled efficiently with minimal computational effort. This paper gives insight into method of analysis, formulation for optimization of the structural system, effect of support settlement and temperature gradient, during construction, on the stress state of incrementally launched bridges.
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Date |
2009
2009 2004 |
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Type |
Article
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Identifier |
Structural Engineering and Mechanics, Vol.17, No.2, 2004, pp.245-266
http://hdl.handle.net/123456789/59 |
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Language |
en
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Rights |
It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
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Publisher |
Techno Press
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