摘要
结合拉西瓦水电站拱坝实际工程,基于混凝土动态损伤力学模型,以粘弹性人工边界反应远处地基辐射阻尼效应,采用Drucker-Prager模型来模拟坝基岩体在强震作用下的力学行为,视拱坝-库水-地基为一"三位一体"耦联动力系统,基于ANSYS平台的有限元程序二次开发,对高拱坝进行强地震动作用下的损伤开裂数值模拟研究,为高拱坝抗震设计与安全评价提供一种分析途径。
The cracking destruction law of Laxiwa High Arch Dam under strong earthquake is discussed based on the ANSYS platform with redeveloped finite element program, in which, the dynamic damage mechanics model of concrete is based, the viscoelastic artificial boundary is used to reflect the distant foundation radiation damping effect, the Drucker-Prager model is used to simulate the mechanical behavior of dam foundation under strong earthquake, and the arch dam-reservoir-foundation is regarded as a ＂trinity＂ coupled dynamical system. This study provides an analytical way to the seismic design and safety assessment of high arch dam.
出处
《水力发电》
北大核心
2014年第4期35-37,49,共4页
Water Power
基金
国家自然科学基金(51009066)
河南省基础与前沿技术(102300410037)
河南省高等学校青年骨干教师资助计划(2012GGJS-101)
关键词
水工结构
拱坝
强震
开裂
数值模拟
hydraulic structure
arch dam
strong earthquake
cracking
numerical simulation
