随机风振下桅杆结构的疲劳寿命控制  

The Control of Fatigue Life of the Guyed Mast Structure Under the Wind Load

作　　者：韦林[1] 徐烈煊[1] 

机构地区：[1]同济大学工程力学系,上海200092

出　　处：《特种结构》2004年第2期36-37,共2页Special Structures

摘　　要：本文要讨论风的脉动随机荷载作用在桅杆结构的时域响应 ,并从时域响应的函数来研究整体结构中“热应力”处疲劳累积损伤效应的寿命估算。然后提出按结构状态变化而控制整体结构寿命的最优规划控制方程 ,通过该规划控制方程的应用 ,使桅杆结构的各控制点疲劳累积损伤能力得到最大的发挥。This paper mainly discuss the timely respond to the effect of the wind load in random of the guyed mast structure,and use the responding function to study the life estimation of the total fatigue losses in the“hot stress”of the whole structure.Then the best plan of optimum control equation of the whole life of the structure according to the change of the structure states is offered.By using this control plan equation,the total fatigue and losses ability of each control point can be max.A project case is presented for further discussion in the end of this passage.

关 键 词：桅杆结构 疲劳寿命 随机荷载 时域响应 损伤效应 

分 类 号：TU347[建筑科学—结构工程]