Abstract：Abstract: In order to comprehensively and comparatively investigate the wind-induced lateral-torsional responses of structures whose mass centers at different floors are not located on a single vertical axis, a dynamic analytic framework of non-coaxial eccentric structures under wind loading is presented in this paper. First, the dynamic equations of a N-storey non-coaxial eccentric building, with 3N-degree-of- freedom, is set up via expanding dynamic equations of a two-storey non-coaxial eccentric structure with 6-degree-of-freedom. Then, based on the power spectra of the aerodynamics wind forces in along-wind, across-wind, and torsional directions established by resorting to the high frequency force balance (HFFB) technique and the multiple point synchronous scanning (MPSS) technique, and simultaneously considering the structural mode coupling and the statistical correlation between across-wind and torsional loading, the wind-induced lateral-torsional coupled responses of structures with non-coaxial mass eccentricity were analyzed in the frequency domain. According to the present framework, the effects of non-coaxial mass eccentricity on the wind-induced lateral-torsional coupled responses of a rectangular steel structure with 120m in height, which is reduced as a three-dimensional analytical model with 15-degree-of-freedom, were analyzed through setting different locations of mass eccentricity.
李春祥;李锦华;顾新花. 非同轴质量偏心结构平扭耦合风振响应的研究[J]. , 2011, 30(4): 68-80.
Li Chun-xiang;Li Jin-hua;GU Xinhua. Study on wind-induced lateral-torsional coupled responses of structures with non-coaxial mass eccentricity. , 2011, 30(4): 68-80.
2011, Vol. 30 
