|
沥青混凝土心墙坝三维有限元静动力分析 |
3D FEM Static and Dynamic Analysis of Rockfill Dam with Asphalt Concrete Core |
投稿时间:2013-04-07 修订日期:2013-08-21 |
DOI: |
中文关键词: 沥青混凝土心墙坝 三维有限元 静、动分析 动剪应变 |
英文关键词: rockfill dam with asphalt concrete core 3D FEM static and dynamic analysis dynamic shear strain |
基金项目:国家自然科学基金项目(91215301,51279025),新世纪优秀人才支持计划资助(NCET-12-0083) |
|
摘要点击次数: 1727 |
全文下载次数: 0 |
中文摘要: |
针对沥青混凝土心墙均质坝,运用非线性三维有限元法进行静、动分析。对大坝的填筑与蓄水分别模拟,并计算了沥青混凝土心墙坝动力响应,分析了坝高、动剪切模量、地震峰值加速度及地震波对心墙的最大动剪应变的影响,总结了心墙的应力与变形、动剪应变的分布规律。结果表明:静力状态下,尤其是满蓄期,应重点关注心墙坝肩处、顶部和底部区域,且高心墙将处于更不利的应力与变形状态。地震作用下,动剪应变最大值发生在河谷中央心墙顶部区域,但动剪应变幅值较小,一般不超过0.5%。 |
英文摘要: |
In order to study the static and dynamic characteristics of homogeneous rockfill dams with asphalt concrete core, the nonlinear three-dimensional finite element method was employed. Filling and storage of the dam are simulated, and the dynamic response of the dam was also got considering the influences of height of the dam, dynamic shear modulus, peak acceleration and seismic waves on the maximum dynamic shear strain of the core. The results showed that the top, bottom and abutment regions of the core should be paid more attention and high core will be under more unfavorable conditions in static state especially full storage period. Under the action of earthquake, the dynamic shear strain of core at the top of central valley is relatively large, but the value is small, less than 0.5%. |
View Fulltext
查看/发表评论 下载PDF阅读器 |
关闭 |
|
|
|