边坡稳定性判别新理念—固有频率判别法  

New theory of distinguishing slope stability——inherent frequency discrimination

作　　者：陈玲玲[1] 高鸣安[1] 钱胜国[1] 

机构地区：[1]长江科学院爆破与振动研究所,武汉430010

出　　处：《岩土力学》2006年第S2期1219-1222,共4页Rock and Soil Mechanics

摘　　要：从结构动力学基本理论可知,频率与刚度是直接相关的,边坡的基本固有频率与边坡的稳定性有着密切的关系,它会随着边坡体的支承刚度的变化而变化。可利用这种变化进行边坡滑体的稳定性判据研究,与现行的变形监测相比,是一种新的理念,即固有频率判别法,它的主要理论依据是频率、刚度、质量三者之间的关系——当质量一定时,频率仅与刚度有关。工程地震研究表明,边坡固有频率是场地的基本特性,通过实测或数值模型计算,均可得到可信的结果。According to basic theory of structural dynamics,frequency is straightly interrelated with stiffness;so that the siope's basically inherent frequency has consanguineous relation with slope's stability;it will change along with the supporting gliding-mass's stiffness.The authors bring forward using these changes to do with the investigation of slope-gliding-mass's stability. Compared to the actual distortion-monitoring means,the inherent frequency discriminantion is a new theory,its centrally academic base is on the relation of frequency,stiffness and mass;when the mass is invariable,frequency is only bear on the stiffness. Project-earthquake investigation has indicated that the slope's inherent frequency is basic character of ground;we can acquire creditable result through actual measurement or numerical model calculation.

关 键 词：边坡稳定 固有频率判别法 质点模型 

分 类 号：TU43[建筑科学—岩土工程]