风与张拉薄膜结构的耦合作用

INTERACTION OF WIND AND TENSION MEMBRANE STRUCTURE

张拉薄膜结构具有自重轻、刚度小的特点 ,因而属于风敏感结构。作用在张拉薄膜结构上的风荷载除与气流本身的特性有关外 ,还与结构在风荷载作用下的位移、速度等有关 ,从而引起附加的气动刚度 (或附加质量 )和气动阻尼。因此 ,在研究张拉薄膜结构的风致动力效应时 ,必须考虑风与结构的耦合作用。为此 ,对张拉薄膜结构的风振研究方法进行了总结 ,主要介绍了考虑风与结构耦合作用的简化气弹力学模型方法 。

Tension membrane structure has light weight and small stiffness It is sensitive to wind The wind load acting on the membrane is relative to the structural displacement and velocity as well as the characteristics of airflow itself So the aerodynamic stiffness(or added mass)and aerodynamic damping are induced Therefore,when studying the wind induced response of tension membrane structure,the wind structure interaction must be considered This paper summarizes the research methods of wind induced vibration of tension membrane structure,mainly introduces the reduced aeroelastic model method which considered wind structure interaction and the tests of two reduced aeroelastic models