地震土压力计算公式探讨重庆大学-余东升.docVIP

岩 土 力 学 2011年 PAGE  PAGE 6 第 卷第 期 岩 土 力 学 Vol. No. 2011年1月 Rock and Soil Mechanics . 2011 收稿日期：2011-1-14 基金项目：中央高校基本科研业务经费资助(NO.CDJZ。 作者简介：余东升，男，1983年生，硕士研究生。主要从事边坡工程方面的研究。 地震土压力计算公式探讨 余东升1,2,吴曙光1,2，侯俊伟3 (1. 重庆大学土木工程学院，重庆 400045；2. 山地城镇建设与新技术教育部重点实验室(重庆大学)，重庆 400045; 3. 中煤国际工程集团重庆设计研究院，重庆 400016) 摘 要：边坡支挡结构在地震期间遭到破坏是很常见的，其主要原因是地震引起土压力的增大。本文简要总结了地震土压力的研究现状，概括了国内各行业现行规范地震土压力计算公式，并分析了各个公式的特点、适用范围和各自存在问题。在此基础上，基于广义库伦理论，提出了粘性土地震主动土压力的计算公式。并通过实例分析，得到了各设计参数对地震土压力的影响规律：支挡结构与填土间的摩擦角对地震土压力影响较小，岩土抗剪强度指标等因素对地震土压力影响较大。 关键词：地震；土压力；计算公式；影响因素 中图分类号：TU 443 文献标识码：A The Study of Seismic Earth Pressure Formulas Yu Dongsheng1,2，Wu Shuguang1,2，Hou Junwei3 (1. College of Civil Engineering, Chongqing University, Chongqing 400045, China； 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, China; 3. Chongqing Design Research Institute, Sino-coal International Engineering Group, Chongqing 400016) Abstract：It’s very common for slope retaining structures damaged during earthquakes, mainly due to the increase of earth pressure caused by earthquakes. The status of seismic earth pressure research is briefly summarized in this paper. Seismic earth pressure formulas in various existing norms are summarized, as well as their characteristics, applicability, and some related problems are briefly analyzed. On this basis, based on the generalized Coulomb theory, a new calculation formula of seismic earth pressure for cohesive soil is derived. Through the example analysis, the influence of the different design variables on seismic earth pressure is analyzed: The friction angle between retaining structure and the filling has a small effect on seismic earth pressure, whi