【作者】 孙芳锦；

【导师】 殷志祥；

【作者基本信息】 辽宁工程技术大学 ， 岩土工程， 2006， 硕士

【摘要】 本文对张拉索膜结构的风致动力效应进行了分析研究。张拉索膜结构的风致动力效应主要是指风激动力性能分析问题,即研究膜结构在风作用下的非线性性能和随机响应。本文首先论述了膜结构设计的非线性有限元原理,并对张拉索膜结构进行了初始形态分析和静力分析。然后本文采用线性滤波器法中的AR模型对风速场进行了模拟; 之后又结合典型的张拉索膜结构研究了膜结构的自振特性; 在此基础上,本文研究了索膜结构在竖向脉动风影响下的风振响应特性,其中分别研究了张拉索膜结构在单独水平风,单独竖向风以及水平风和竖向风共同作用下的振动规律,得出了有关重要结论。最后考虑结构与风的固流耦合作用,用时域分析法研究了索膜结构的抖振响应问题,找出了张拉索膜结构抖振响应的规律及特性。更多还原

【Abstract】 Research on the wind-induced vibration of cable-membrane structure has been done in this paper. First of all, nonlinear finite element formulation for the design of cable-membrane structure is presented. The form-finding and static behavior of the structure are analyzed afterwards. Wind-induced vibration of cable-membrane structure mainly refers to the wind-induced dynamic behaviors of the structure, i.e. the nonlinear behaviors and random responses caused by wind. AR model in linear filter theory is adopted to simulate pulsant wind. Combined with some typical cable-membrane structures, research on self-vibration of the structure has been conducted. Based on the previous work, the influence caused by the vertical wind component on the membrane roofs has been analyzed in time domain. It includes the vibration laws of the structure under separate horizontal wind component, separate vertical wind component and the collective horizontal wind component and vertical wind component. Significant conclusions have been drawn from the analysis. Finally, considering structure-wind coupling interaction, research on buffeting response of cable-membrane structure is done. Rules of buffeting response of cable-membrane structure have been found after analyzing the results.更多还原