混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
11期
58-61
,共4页
阻尼比%损耗因子%纤维筋
阻尼比%損耗因子%纖維觔
조니비%손모인자%섬유근
Damping ratio%Loss factor%FRP
为保证建筑结构在震动中的安定性，对影响混凝土阻尼性能的因素进行了分析，考察了纤维筋混凝土纵向配筋率、筋材类型、箍筋间距和构件尺寸等因素对混凝土阻尼性能的影响。通过悬臂梁自由振动装置和三点弯曲梁式大尺寸材料阻尼测试装置对纤维筋混凝土阻尼比和损耗因子的测定，结果表明，阻尼比和损耗因子都可以表征混凝土构件的阻尼性能，纵向配筋率在0.9%以上时对混凝土阻尼性能影响不大，混凝土阻尼性能的提高随着箍筋间距的缩小和筋材表面粗糙度的增大以及加载频率的降低而增大，而构件尺寸则对混凝土阻尼性能影响不大。
為保證建築結構在震動中的安定性，對影響混凝土阻尼性能的因素進行瞭分析，攷察瞭纖維觔混凝土縱嚮配觔率、觔材類型、箍觔間距和構件呎吋等因素對混凝土阻尼性能的影響。通過懸臂樑自由振動裝置和三點彎麯樑式大呎吋材料阻尼測試裝置對纖維觔混凝土阻尼比和損耗因子的測定，結果錶明，阻尼比和損耗因子都可以錶徵混凝土構件的阻尼性能，縱嚮配觔率在0.9%以上時對混凝土阻尼性能影響不大，混凝土阻尼性能的提高隨著箍觔間距的縮小和觔材錶麵粗糙度的增大以及加載頻率的降低而增大，而構件呎吋則對混凝土阻尼性能影響不大。
위보증건축결구재진동중적안정성，대영향혼응토조니성능적인소진행료분석，고찰료섬유근혼응토종향배근솔、근재류형、고근간거화구건척촌등인소대혼응토조니성능적영향。통과현비량자유진동장치화삼점만곡량식대척촌재료조니측시장치대섬유근혼응토조니비화손모인자적측정，결과표명，조니비화손모인자도가이표정혼응토구건적조니성능，종향배근솔재0.9%이상시대혼응토조니성능영향불대，혼응토조니성능적제고수착고근간거적축소화근재표면조조도적증대이급가재빈솔적강저이증대，이구건척촌칙대혼응토조니성능영향불대。
To ensure the stability of buildings structure in shocking, effecting factors of concrete damping property are analysed, the influence of longitudinal reforcement ratio of fiber reinforced concrete, reinforcing types, stirrup spacing and dimension of component on concrete damping property is studied. The damping ratio of fiber reinforced concrete and dam-age factor are tested by free vibration cantilever device and damping test device for three-point dynamic bending dimen-sion material, the results show that the damping property could be characterized by damping ratio and loss factor, the damping property kept steady when longitudinal reinforcement ratio reaches 0.9%, damping property of concrete increases with decreased the stirrup spacing and increased the surface roughness, and decreased load frequency, dimension of com-ponent has little effect on damping property.
