Study of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

查看全文 作　　者：Zhang [1]Xinjun;Sun [1]Hailing

机构地区：[1]Zhejiang University of Technology

出　　处：《Engineering Sciences》索引2014年第12卷第2期,共11页

基　　金：Zhejiang Provincial Natural Science Foundation(No.502118,No.Y104577) 摘　　要：With the increase of span length,the bridge tends to be more flexible,and the wind stability becomes an important problem for the design and construction of super long-span cable-stayed bridges. By taking a super long-span cable-stayed bridge with a main span of 1 400 m as example,the aerostatic and aerodynamic stability of the bridge are investigated by three-dimensional nonlinear aerostatic and aerodynamic stability analysis,and the results are compared with those of a suspension bridge with a main span of 1 385 m,and from the aspect of wind stability,the feasibility of using cable-stayed bridge in super long-span bridge with a main span above 1 000 m is discussed. In addition,the influences of design parameters including the depth and width of the girder,the tower structure,the tower height-to-span ratio,the side-to-main span ratio,the auxiliary piers in the side span and the anchorage system of stay cables,etc on the aerostatic and aerodynamic stability of super long-span cable-stayed bridges are investigated numerically;the key design parameters are pointed out,and also their reasonable values are proposed. 关键词：大跨度斜拉桥空气动力稳定性动力学稳定性静风大跨度桥梁设计参数空气静力三维非线性

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Study of the aerostatic and aerodynamic stability of super long-span cable-stayed bridges

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