摘要
本文采用现代悬索桥结构的挠度理论,对于面内受垂直方向恒载和活载、面外受水平方向风荷载作用的单跨径两铰加劲箱梁截面的悬索桥进行内力计算和应力组合,并采用序列无约束极小化法(SUMT法)进行优化分析,得出以悬索桥加劲箱梁最小体积为目标函数的最优解答。 本文通过主跨500m～1000m六种工况的悬索桥的优化分析,得出反映加劲箱梁截面的构造特性参数K_Q的变化规律,在悬索桥的优化分析方面是一次有益的尝试。
By use of the deflection theory,the optimum design of single span two hinged suspension bridge with box-section subjected to dead, live and wind loads is performed with minimum volume of stiffening box girder as objective function.The SUMT method is used in the optimum analysis.Through the optimal analysis of bridges with six main span length conditions (500m-1000m),the variation regularity of the parameter K. that reflects the construction property of the section of stiffening box girder is obtained in this paper.
出处
《土木工程学报》
EI
CSCD
北大核心
1991年第3期38-46,共9页
China Civil Engineering Journal
