摘要
采用阻尼耗能空间分布理论,推导了构件的单位周期阻尼耗能及其整体阻尼比的计算方法.得到了随机地震荷载下构件纵向应力传递因子和纵向应力传递损耗因子的计算公式.分析表明,随机地震荷载作用下构件的整体阻尼比受到组成材料的阻尼特性、构件的刚度分布、假定振动形状及截面形式等因素的影响.并建议给出了试验研究材料阻尼特性的计算方法.通过已有的阻尼实验数据得到不同混凝土强度、弹性模量、配筋率下的钢筋混凝土材料的阻尼耗能系数.
According to the spatial distribution theory of damping energy dissipation, a calculation method for the damping energy and damping ratio of a cantilever beam in one cycle was developed. The analysis indicated that the damping characteristic of the member was affected by the material damping characteristic, stiffness distribution, mode of vibration and the sectional shape of the member, etc. An experimental method for the material damping characteristic was presented. At last, the damping energy dissipation coefficient for reinforced concrete materials was calculated while considering different concrete strength, elastic modulus and reinforcement ratios based on test data available.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第3期6-10,共5页
Journal of Hunan University:Natural Sciences
基金
973国家重点基础研究发展计划(2007CB714202)
关键词
阻尼
阻尼比
钢筋混凝土
阻尼耗能系数
damping
damping ratio
reinforced concrete
damping energy dissipation coefficient
