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논문 기본 정보

자료유형
학술저널
저자정보
Sasmal, Saptarshi (Structural Engineering Research Centre, CSIR Campus) Ramanjaneyulu, K. (Structural Engineering Research Centre, CSIR Campus) Srinivas, V. (Structural Engineering Research Centre, CSIR Campus) Gopalakrishnan, S. (Structural Engineering Research Centre, CSIR Campus)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제17권 제2호
발행연도
2004.1
수록면
245 - 266 (22page)

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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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