【摘要】 以双筋矩形混凝土墩柱构件为对象,从基本的力学概念出发,运用无量纲分析方法,讨论构件在弹性范围内受弯开裂时的截面受压区高度与刚度分布特性。以此为基础,从理论上提出混凝土受弯构件开裂后弯曲刚度的"三段式"近似模拟方法,对钢筋混凝土墩柱构件等效刚度的相关理论研究及试验研究工作具有一定参考价值。更多还原

【Abstract】 Based on the double-reinforcement rectangular concrete pier members as object and starting from the fundamental mechanical concepts,this paper discusses distribution characteristics of height and rigidity of structures in sectional compression zone during flexural crack within elastic range by means of dimensionless analysis method.On the basis of this discussion,the paper proposes in theory a "three-stage"approximate simulation method for bending rigidity after cracking of flexural concrete members,presenting a certain reference for related theoretical and test studies on equivalent rigidity of reinforced concrete pier members.更多还原