摘要
从悬臂直梁出发,可以推导出线刚度与固定端弯矩及铰支端转角的相互关系,进而通过该关系推导出曲梁的折算线刚度。如果考虑楼板的刚度足够大,利用传统的D值法可以直接计算出相关柱的侧移刚度。如果考虑楼板的刚度是有限的,则可以通过建立平衡方程和协调方程得出曲梁中部柱子的位移与其它柱子位移之间的关系,进而可以对曲梁中部柱子侧移刚度的修正系数进行调整,最终可以求出曲梁中部柱子的侧移刚度。
The mutual relation between the linear stiffness and the bending moment of the fixed end and the slope of the pivoted end could be ascertained based on the straight cantilever beam, and the reduction linear stiffness of the curved beam could be ascertained via this relation. If the stiffness of the floor stab can be considered as rigid enough, the lateral stiffness of the correlative columns could be calculated directly using conventional D-value method. If the stiffness of the floor stab is considered as limited, the relation of the displacement between the column in the middle of the curved beam and other colmnns could be gained via establishing equilibrium equations and compatibility equations, then the correction factor of the lateral stiffness of the column in the middle of the curved beam could be adjusted via this relation, finally the lateral stiffness of the column in the middle of the curved beam could be calculated.
出处
《工程建设与设计》
2007年第12期9-13,共5页
Construction & Design for Engineering
基金
国家自然科学基金(50574064)
关键词
圆弧形曲梁
框架柱
侧移刚度
线刚度
circular curved beam
frame column
lateral stiffness
linear stiffness
