CAJ | 학술논문

采用连续化方法导出了短肢剪力墙结构在任意高度侧向集中荷载的作用下的侧移曲线方程,由此得到该结构的抗侧移柔度系数,进而得出结构的抗侧移刚度矩阵.应用抗侧移刚度矩阵对各种整体性系数和肢强系数的短肢剪力墙结构进行了动力特性分析,研究其对结构动力特性的影响.结果表明,当肢强系数不变时,随整体性系数的增加,短肢剪力墙的前两阶振型的振动周期显著减小,而其他高阶振型的振动周期变化很小;当整体性系数不变时,短肢剪力墙的前两阶振型的振动周期随肢强系数的增加显著减小,而其他高阶振型的振动周期变化不大.
채용련속화방법도출료단지전력장결구재임의고도측향집중하재적작용하적측이곡선방정,유차득도해결구적항측이유도계수,진이득출결구적항측이강도구진.응용항측이강도구진대각충정체성계수화지강계수적단지전력장결구진행료동력특성분석,연구기대결구동력특성적영향.결과표명,당지강계수불변시,수정체성계수적증가,단지전력장적전량계진형적진동주기현저감소,이기타고계진형적진동주기변화흔소;당정체성계수불변시,단지전력장적전량계진형적진동주기수지강계수적증가현저감소,이기타고계진형적진동주기변화불대.
The equations of the lateral deflection curve of the short pier shear wall under a lateral concentrated load at any level are derived by employing a continuous approach. Lateral flexibility matrixes for the dynamic analysis are also obtained by repeatedly calculating the lateral unit load on the wall at each level where a lumped mass located. Dynamic analyses are implemented for short pier shear walls with different parameters, called the integrative coefficient and the pier strength coefficient related to the dimensions of walls. The influences of two coefficients on the dynamic performances of the structure are studied. Results indicate that with the increase of the integrative coefficient, the periods of top two modes apparently decrease but the other periods of higher frequency modes show little variation when the pier strength coefficient remains constant. Similarly, if the integrative coefficient is constant, the top two periods of the free vibration decrease with the increase of the integrative coefficient but the other periods of higher frequency modes show less variation.