| 杜修力,黄景琦,金浏,路德春.混凝土三轴动态强度准则[J].水利学报,2014,45(1): |
| 混凝土三轴动态强度准则 |
| A tri-axial dynamic strength criterion for concrete |
| |
| DOI： |
| 中文关键词: 混凝土 率效应 三轴动态强度准则 非线性 |
| 英文关键词: concrete strain rate effect tri-axial dynamic strength criterion non-linear |
| 基金项目: |
|
| 摘要点击次数: 2839 |
| 全文下载次数: 59 |
| 中文摘要: |
| 动态荷载作用下，混凝土材料存在着明显的率相关性，建立混凝土材料在动态荷载作用下的三轴动态强度准则具有重要的科学意义。本文在广义非线性强度理论的框架下，结合混凝土材料的非线性单轴、双轴动态强度特性，推导了广义非线性强度理论材料参数的率效应公式，从而得到了考虑率效应的混凝土材料的三轴动态强度准则。双轴情况下，所建立的动态强度准则与动态试验数据吻合较好；根据混凝土材料强度参数的率效应公式，探讨了混凝土材料的多轴非线性强度特性。 |
| 英文摘要: |
| Strain-rate sensitivity exists in concrete subjected to dynamic loads. The establishment of a tri-axial dynamic strength criterion for concrete， therefore， is a significant effort. Based on the Generalized
Non-linear Strength Theory combined with nonlinear uniaxial and biaxial dynamic strength criteria of concrete， the rate effect relation of strength parameter is deduced. Subsequently， a tri-axial dynamic strength criterion for concrete is built. Compared with biaxial test data， the results show that the dynamic strength criterion accords with test data well. The non-linear tri-axial dynamic strength characteristics of concrete are analyzed based on strength parameters of concrete material. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |