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沥青混凝土心墙坝三维有限元静动力分析

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Indexed by:期刊论文

Date of Publication:2014-03-21

Journal:大连理工大学学报

Included Journals:PKU、ISTIC、CSCD、Scopus

Volume:54

Issue:2

Page Number:197-203

ISSN No.:1000-8608

Key Words:沥青混凝土心墙坝;三维有限元;静动力分析;动剪应变

Abstract: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力分析.对大坝填筑与蓄水阶段分别进行模拟,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最大动剪应变的影响,总结了心墙应力与变形、动剪应变分布规律.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%.

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