摘要
首先分析了钢筋混凝土结构在振动过程中阻尼耗能的影响因素,探讨了不同的阻尼耗能定义及其适用范围。然后以钢筋混凝土受弯构件为研究对象,对其在振动中的阻尼耗能问题进行了探讨,分析中把阻尼耗能看成是一种空间分布的能量损失,研究了受弯构件阻尼耗能与振动应力幅值、混凝土强度等级、配箍率和最大剪应力的关系,并通过他人试验资料确定了振动应力幅值系数n和阻尼耗能因子J,为阻尼耗能的计算提供了另一种理论基础。
Firstly, influencing factors of structural damping dissipation under vibration are analyzed and two kinds of different damping dissipations are defined. Then, RC bending elements are researched where damping is taken as spatial distributing energy dissipation. By research of relationships between damping dissipation and spatial distributing stress amplitude in vibration, the formula for damping energy dissipation and spatial distributing stress amplitude is presented, which including concrete strength, ratio of stirrup and maximum shearing stress. Finally, stress amplitude coefficient n and damping dissipation factor J are obtained based on other teat results.
出处
《工业建筑》
CSCD
北大核心
2006年第2期11-15,共5页
Industrial Construction
基金
2002年"高等学校优秀青年教师教学科研奖励计划"资助。
关键词
受弯构件
阻尼耗能
应力幅值
耗能因子
bending element
damping energy dissipation
stress amplitude
energy dissipation factor
