Elasto-plastic behavior of tall buildings in vortex-induced oscillations

涡激振荡中高层建筑的弹塑性行为

• 批准号: 06452286
• 负责人: WADA Akira
• 金额: $ 3.07万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452286/
• 关键词: tall building; dynamic analysis; unstable oscillations; vortex-induced oscillation; fluid-structure interaction; elasto-plastic response; simulation; unsteady aerodynamics

Recently tall buildings are designed within elasticity for the wind of the 500 years return expectation. In case that the vortex-induced oscillation occurs under stronger wind, it is important to evaluate the structual elasto-plastic stability of a tall building. Structual characteristics should be investigated for wind resistance design. A change of the natural period of the buildings and hysteresis damping have much effect on the aerodynamic forces, so we take the dangerous vibrations of tall buildings into account. The behaviors of the rectangular cylinder in vortex-induced oscillations and unstable oscillations are recorded on VTR.The process of growing vibrating response and the difference between elastic response and elasto-plastic response are investigated. The validity of the simulations is confirmed through the comparison of wind tunnel tests. As a result we understand the elasto-plastic behavior of a tall building in vortex-induced oscillations.

近年来，高层建筑物被设计为具有500年回报预期的弹性风。当高层建筑在强风作用下发生涡激振动时，对结构的弹塑性稳定性进行评估是十分重要的。抗风设计时应研究结构特性。建筑物自振周期的变化和滞回阻尼对气动力的影响很大，因此在计算中考虑了高层建筑的危险振动。用录像机记录了矩形柱在涡激振动和不稳定振动中的行为，研究了振动响应的增长过程以及弹性响应和弹塑性响应的区别。通过与风洞试验结果的对比，验证了模拟结果的正确性。从而了解高层建筑在涡激振动中的弹塑性行为。

项目成果

和田 章: "強風時のエネルギー吸収量に基づく同調質量ダンパーの制振指標に関する検討" 日本建築学会構造系論文報告集. 468. 51-60 (1995)

Akira Wada：“强风期间基于能量吸收的调谐质量阻尼器阻尼指数的研究”日本建筑研究所结构工程论文报告 468. 51-60 (1995)

Tetsuro TAMURA: "Three-dimensional Simulations of an Oscillating Rectangular Cylinder" Proc. of 6th Int. Conf. on Flow Induced Vibrations. (印刷中). 1-12 (1995)

Tetsuro TAMURA：“振荡矩形圆柱体的三维模拟”第 6 届国际会议上的流动引起的振动（1-12 版）。

Kazuo Tamura, Keiji Shiba, Akira Wada: "Vibration control performance index of mass damper system based on absorbed energy during strong wind" Journal of structural and construction engineering. No.468. 51-60 (1995)

Kazuo Tamura、Keiji Shiba、Akira Wada：“基于强风吸收能量的质量阻尼器系统振动控制性能指标”结构与建筑工程杂志。

Tetsuro TAMURA: "Numerical Study of Pressure Fluctuations on Rectagular Cylinderin Aerodynamic Oscillation" Journal of Wind Engineering and Industrial Aerodynamics. (印刷中). (1994)

Tetsuro TAMURA：“矩形圆柱体气动振荡的压力波动的数值研究”风工程和工业空气动力学杂志（1994 年）。

Tetsuro Tamura, Yoshiaki Itoh, Akira Wada: "Three-dimensional simulations of an oscillating rectangular cylinder" Proc.6th Int.Conference on Flow Induced Vibration.

Tetsuro Tamura、Yoshiaki Itoh、Akira Wada：“振荡矩形圆柱体的三维模拟”Proc.6th Int.Conference on Flow Induced Vibration。