砂砾石垫层在水平动力作用下软化响应模型  

Response Model of Gravel Cushion Softening under Action of Horizontal Dynamic

作　　者：鲁进步[1] 蒋红英[1] 慕青松[2] 

机构地区：[1]西京学院工程技术系,陕西西安710123 [2]兰州大学土木工程与力学学院,甘肃兰州730000

出　　处：《烟台大学学报（自然科学与工程版）》2012年第4期308-311,共4页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(11072095);陕西省科技计划(工业攻关)项目(2010K07-28);西京学院科研项目(J120114)

摘　　要：基于水平振动荷载下砂砾石垫层响应的实验研究,指出了砂砾石垫层内部自组织、颗粒移动随之结构软化的响应特性主要具有:局部效应;剪阻效应;时间效应等.用Pois-son过程模拟了砂砾石层内部软化的响应过程,并建立了预测的模型.为砂砾石垫层在经历了若干次多遇地震作用后的工后状况研究和砂砾石垫层隔震研究奠定了基础.Based on experimental study on response of the gravel cushion under horizontal vibration loads, this article has pointed out the response characteristics, which are caused by the movement and structure softening of the self-organization and particles in gravel cushion, including local effects, shear resistance and time effect, etc. We have simulated the response process of the gravel cushion softening by using Poisson process, and then established the prediction model. This study has laid the foundation for research on status of gravel cushion after a number of multi-earthquakes, and research on isolaed earthquake of the gravel cushion.

关 键 词：砂砾石垫层 剪阻强度 缓纳 软化 理论模型 

分 类 号：TU444[建筑科学—岩土工程]