| 逯静洲,林 皋,肖诗云,王 哲.混凝土材料经历三向受压荷载历史后抗压强度劣化的研究[J].水利学报,2001,32(11):0008-0015 |
| 混凝土材料经历三向受压荷载历史后抗压强度劣化的研究 |
| Study on the reduction of concrete compressive strength due to triaxial compressive loading history |
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| DOI： |
| 中文关键词: 混凝土 损伤 抗压强度劣化 荷载历史 |
| 英文关键词: concrete damage reduction of compressive strength loading history. |
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| 摘要点击次数: 2634 |
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| 中文摘要: |
| 以连续介质损伤力学为基础，以侧向应力和最大竖向应变二者的组合来表征混凝土所经历过的荷载历史，以抗压强度劣化来表征混凝土损伤，对10cm×10cm×10cm的立方体试件进行了损伤试验、分析及研究。本文研究了不同围压条件下，单调和循环加载历史产生混凝土损伤的发展演化规律。根据试验结果拟合得到损伤的演化方程，分析了影响损伤发展的主要因素，阐明了其原因。从中可以看出，用抗压强度劣化来估测混凝土结构的损伤在工程实践中非常方便实用。 |
| 英文摘要: |
| Based on the continuum damage mechanics theory, the damage of concrete cubes experienced monotonic and cyclic triaxial compressive load is studied experimentally. The loading history is denoted by the combination of lateral stress and maximum longitudinal strain, the damage of the concrete is denoted by the reduction of compressive strength. By curve fitting of the experimental data, the evolution equation of damage is obtained. The main factors that affect the damage development are examined and the causes are expounded. It is demonstrated that the method is convenient and applicable to estimate the damage of concrete in engineering practice. |
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