| 冻融荷载耦合作用下岩石损伤力学特性 |
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| 引用本文： | 张慧梅,杨更社.冻融荷载耦合作用下岩石损伤力学特性[J].工程力学,2011(5):161-165. |
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| 作者姓名： | 张慧梅 杨更社 |
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| 作者单位： | 西安科技大学力学系;西安科技大学建筑与土木工程学院; |
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| 基金项目： | 国家自然科学基金项目(40872177,50974102); 陕西省自然科学基金项目(SJ08A21); 陕西省教育厅专项基金项目(11JK0525) |
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| 摘 要： | 以寒区岩体工程为背景,针对冻融受荷岩石,从细观力学机理出发,运用宏观唯象损伤力学和非平衡统计的概念和方法,得到了以冻融循环次数和应变为损伤演化控制变量的损伤演化方程;应用推广后的应变等价原理,建立了较为真实的岩石冻融受荷损伤扩展本构关系:探讨了岩石材料细观结构损伤及其诱发的材料力学性能演化途径.研究表明:岩石的冻融损伤...
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| 关 键 词： | 岩石 冻融受荷 耦合 损伤模型 力学特性 |
DAMAGE MECHANICAL CHARACTERISTICS OF ROCK UNDER FREEZE-THAW AND LOAD COUPLING |
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| ZHANG Hui-mei,YANG Geng-she.DAMAGE MECHANICAL CHARACTERISTICS OF ROCK UNDER FREEZE-THAW AND LOAD COUPLING[J].Engineering Mechanics,2011(5):161-165. |
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| Authors: | ZHANG Hui-mei YANG Geng-she |
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| Affiliation: | ZHANG Hui-mei1,YANG Geng-she2(1.Department of Mechanics,Xi'an University of Science & Technology,Xi'an 710054,China,2.College of Architecture and Civil Engineering,Xi'an University of Science &Technology,China) |
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| Abstract: | The paper derives the damage evolution equation in terms of freeze-thaw cycle and strain for the freeze-thaw and loaded rock based on micro mechanical mechanism and using the methods of macro phenomenological damage mechanics and non-equilibrium statistics.The real damage propagation constitutive relation of the freeze-thaw and loaded rock is established by using the generalized theory of strain equality.And the evolutionary route of micro-structural damage and materials mechanical properties for the rock a... |
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| Keywords: | rock freeze-thaw and load coupling damage model mechanical characteristics |
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