边坡动力响应规律探讨

The discussion of slope dynamic response

振型代表了边坡岩土体在某一频率地震荷载作用下质点振动强弱的空间分布,是弹性波在边坡岩土体内传播规律的一种映像。通过模拟场地地脉动信息,研究边坡在微振作用下的振动特征,了解边坡自振规律,依据边坡地震动力稳定性分析系统的基本模块探讨边坡微振型分布和边坡破坏规律的内在联系,推断边坡在遭遇未来强震作用时可能发生破坏的部位及边坡体可能出现的破坏方式。

Vibration type represents the distribution of vibration intensity for a slope under a certain frequency seismic load,which is a result of the coherent superposition for elastic waves in a slope. Two questions are disscussed in this paper, one is the vibration characteristics of the slope under the action of micro vibration,which is a foundation to study dynamic characteristics for slopes and a basic module for slope stability owing to earthquake actions. The second one is to discuss the link between vibration types and the rules of slope failure, in order to imagine the site of damage and failure mode for a rock and soil slope under the action of strong earthquakes that may occur in the future, which is significant for the dynamic stability analysis of slopes.