苏玉肖,王高辉

• 1:武汉大学水资源与水电工程科学国家重点实验室

摘要(Abstract)：

混凝土重力坝上游面可细分为铅直面、斜面或折面，采用不同的上游坝坡设计其抗爆性能存在较大的差异。通过建立考虑初始应力场和高应变率效应的混凝土重力坝水下接触爆炸全耦合模型，研究了水下接触爆炸荷载作用下混凝土重力坝的毁伤发展过程和破坏模式，对比分析了不同上游坝坡比下混凝土重力坝的水下爆炸毁伤形态及动力响应特性，探讨了不同上游坝面坡度对混凝土重力坝抗爆性能的影响。结果表明：混凝土重力坝上游坡度对大坝抗爆性能具有重要的影响，混凝土重力坝上游面采用斜面设计时可以有效减少坝踵部位的破坏，减小坝踵处的开裂破坏长度，小幅减小上游坝面的破坏深度和冲切破坏角度，提高大坝的整体抗爆性能。研究成果可为混凝土重力坝抗爆防护设计提供参考。

关键词(KeyWords)： 混凝土重力坝;上游坝坡;水下接触爆炸;毁伤特性;坝踵

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(52179140,51939008);; 湖北省自然科学基金杰出青年项目(2021CFA093);; 武汉市应用基础前沿项目(2020020601012282)

作者(Author): 苏玉肖,王高辉

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