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Determination of Optimal Support for Cable-stayed Bridge Designs  

An, Zu-Og (경희대학교 토목건축대학)
Yoon, Young-Man (S&T ENG, 구조부)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.3, no.4, 2003 , pp. 103-109 More about this Journal
Abstract
A numerical analysis of cable-stayed bridge is conducted to determine optimum longitudinal modulus of elasticity which represents the boundary condition between the tower and main girder. The effect of longitudinal modulus of elasticity is investigated for different loading condition (live load, wind load, seismic load), respectively. There are significant changes in the member forces as variations of longitudinal modulus of elasticity, such as, $k_h$=e=100tonf/m/bearing (live load), $k_h$=e=1000tonf/m/bearing (seismic load), However, the wind loads do not affect member forces. The optimum longitudinal modulus of elasticity is determined from considering minimum member forces in the numerical analysis results.
Keywords
Support condition; Elastic modulus of axis direction; Earthquake force;
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