【摘要】 本文从升力振子模型着手,以国外试验数据为依据,详细研究了锁定现象的流固耦联作用机理和对应的高耸结构横向风振的主要形式——涡致锁定激励响应,提出了合理的响应计算方法。在这些研究基础上本文还讨论了横风向受力为主的一类高耸结构的破坏风荷载计算,该研究充分体现了锁定现象的非线性激振特性。更多还原

【Abstract】 In this paper, the mechanism of the wind flow-structure interaction to induce the response of lock-in excitation and the corresponding main modals of vibration of highrise structures are studied, the lift-oscillator model and some of the internatonal experimental results being been used. The main form of the wing vibration of the highrise structure is the response to vortex-induced lock in excitation induced by the crosswind. On these bases, the author suggests a resonable method for calculation and also gives discussion of the failing wind load of those kind of highrise structures whose crosswind responses are dominant. It is believed that the nonlinear characteristics of lock-in excitation mechanism have been fully reflected.更多还原