大跨径自锚式斜拉-悬索协作体系桥非线性随机静力分析

自锚式斜拉-悬索协作体系桥综合了斜拉桥和自锚式悬索桥的特点,完全取消了庞大的锚碇,为深海软基建设大跨径桥梁提供了一种理想方案.对自锚式斜拉-悬索协作体系桥进行了确定性非线性分析并应用响应面法进行了非线性随机静力分析,算例研究结果表明,各种随机变量的变异对自锚式斜拉-悬索协作体系桥响应影响规律不同,同其他随机变量相比,主缆弹性模量和截面面积的变异对桥梁跨中挠度影响最为显著,其次是钢主梁参数,而吊杆参数的变异对其影响可以忽略不计.

Nonlinear stochastic static analysis of long span self-anchored cable-stayed suspension bridge

Self-anchored cable-stayed suspension bridge combines both merits of self-anchored suspension bridge and cable-stayed bridge,cancels the huge anchorage and provides a better example for other similar construction of huge span bridges under deep-sea soft foundation conditions.The deterministic nonlinearity is analyzed and response surface approach is utilized to analyze nonlinear stochastic static of self-anchored cable-stayed suspension bridge.The results of this example show that the variation of the stoch...