| 强震作用下高拱坝损伤开裂研究 |
| |
| 引用本文： | 程恒,张燎军.强震作用下高拱坝损伤开裂研究[J].水力发电学报,2011,30(6). |
| |
| 作者姓名： | 程恒 张燎军 |
| |
| 作者单位： | 河海大学水利水电学院,南京,210098 |
| |
| 摘 要： | 本文基于混凝土的力学特性,建立能够反映混凝土动态情况的多轴损伤开裂模型。以等效三维一致粘弹性边界反映远域地基辐射阻尼效应,采用Mohr-Coulomb材料模型模拟坝基裂隙岩体在地震作用下的力学行为,运用非线性地震波动分析方法研究国内某拱坝在强震作用下的损伤开裂过程。通过对大坝的损伤程度以及坝体上、下游面的最大拉应力进行分析,给出大坝的抗震薄弱部位,并对其抗震安全性进行了评价。研究揭示拱坝动力损伤灾变机理,为高拱坝抗震安全评价提供一种分析途径。
|
| 关 键 词： | 水工结构 损伤 开裂 拱坝 强震 非线性 |
Study of damage and cracking in high arch dam subjected to strong earthquake |
| |
| CHENG Heng,ZHANG Liaojun.Study of damage and cracking in high arch dam subjected to strong earthquake[J].Journal of Hydroelectric Engineering,2011,30(6). |
| |
| Authors: | CHENG Heng ZHANG Liaojun |
| |
| Affiliation: | CHENG Heng,ZHANG Liaojun(College of Water Conservancy and Hydropower,Hohai University,Nanjing 210098) |
| |
| Abstract: | A multi-axial damage and cracking model is developed to model the dynamic properties of concrete materials.In this model,Mohr-Coulomb model is used to simulate the dynamic behaviors of dam foundation rock mass under earthquake,with the effect of far-domain radiation damping modeled by a 3D consistent equivalent viscous-spring boundary.This model is applied to an arch dam subjected to strong earthquake,and its damage and cracking process are studied with a method of nonlinear seismic wave motion analysis.Thr... |
| |
| Keywords: | hydraulic structure damage cracking arch dam strong earthquake nonlinearity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
