摘要
材料的阻尼是衡量材料本身减振性能的主要指标。采用自由振动法测试得到了一批钢筋混凝土小变形阻尼比的基础性数据。试验结果表明:所采用的阻尼比测试方法和试验过程是可靠的;对同类型的混凝土,其小变形阻尼比均随抗压强度和弹性模量提高而降低;普通混凝土小变形阻尼比在0 9%～2 0%之间;纵筋变化对小变形阻尼影响较大,而箍筋变化对小变形阻尼的影响较小。
Damping ratio is the main index representing the property of materials in reducing vibration.Free vibration method is employed to measure the damping ratio.A great deal of fundamental data for the damping ratio of concrete in small deformation is obtained.The analyses of experimental results conclude that:the testing method and procedure for damping ratio are reliable;for concrete in the same class,the damping ratio decrease with increasing compressive strength and Young's modulus;the damping ratio falls in 09%～20% for ordinary concrete in small deformation;the damping ratio in small deformation decrease with increasing steel ratio.
出处
《四川建筑科学研究》
2004年第2期10-12,共3页
Sichuan Building Science
