论文部分内容阅读
分析了网壳结构中自振频率、阻尼比等因素对共振响应在总风振响应中贡献的影响,利用考虑高阶振型共振响应的综合模态法计算了单层网壳的风振响应,讨论了计算综合模态时所需的振型数。针对结构自振频率密集的特性,研究了考虑振型互相关贡献的必要性、影响振型互相关贡献的因素和计算振型互相关贡献所需的振型数。最后,通过具体的算例分析验证了相关结论。
The influence of natural frequency and damping ratio on the contribution of the resonance response to the total wind-induced vibration response is analyzed. The wind-induced response of the single-layer reticulated shell is calculated by the comprehensive modal method considering the resonance of the high-order vibration mode. The number of modes required to calculate the integrated modal. Considering the frequency-dependent structure of the structure, the necessity of considering the contribution of the modal cross-correlation, the factors affecting the cross-correlation of the mode shapes and the number of modes needed to calculate the contribution of the cross-correlation of the modes are studied. Finally, the relevant conclusions are verified through a specific example analysis.