| 室内配制混凝土单轴试验全应力-应变曲线试验研究 |
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| 引用本文： | 潘俊涛 等. 室内配制混凝土单轴试验全应力-应变曲线试验研究[J]. 价值工程, 2014, 0(12): 109-111 |
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| 作者姓名： | 潘俊涛 等 |
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| 作者单位： | [1]昆明理工大学国土资源工程学院,昆明650093 [2] 中国有色金属工业昆明勘察设计研究院,昆明650051 |
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| 摘 要： | 本文采用TAW-2000微机控制岩石伺服三轴压力试验机,对室内配制普通混凝土圆柱体试件(高径比约2:1)进行单轴受压实验。测定了普通混凝土全应力-应变曲线。通过对试验的研究,循环加载条件下,确实形成了一个封闭的塑性滞回环,且峰后塑性滞回环随循环的次数的增加而变小变窄;加载应力和加载段变形模量呈一定的线性关系;峰后卸载点的应力和峰值应力差越大,峰后曲线的变化越明显,变得越平缓,重新加载曲线的趋近线斜率与初始变形曲线的趋近线斜率相差越大。
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| 关 键 词： | 单轴实验 普通混凝土 全应力-应变曲线 塑性滞回环 变形模量 |
On Complete Stress-strain Curves Experiment in the Indoor Concrete Uniaxial Text |
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| PAN Jun-tao,LI Zheng-rong. On Complete Stress-strain Curves Experiment in the Indoor Concrete Uniaxial Text[J]. Value Engineering, 2014, 0(12): 109-111 |
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| Authors: | PAN Jun-tao LI Zheng-rong |
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| Affiliation: | 1Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China; 2China Nonferrous Metals Industry Kunming Survey and Design Institute, Kunming 650051, China) |
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| Abstract: | This paper uses TAW-2000 computer controlled rock servo triaxial testing machine to carry on uniaxial compression experiments ordinary concrete cylindrical specimens （height to diameter ratio of about 2：1） in the room preparation, determines the ordinary concrete complete stress-strain curve. Through the study of the test, cyclic loading conditions, a closed plastic hysteresis loop is formed, with the increasing times of cycle, the plastic hysteresis loop after the peak is smaller and narrower; loading stress and loading segment deformation modulus presents a linear relationship; the stresses of post-peak unloading point and peak stress is more bigger, the changes in the post-peak curve is more obvious and gentle, the difference between approaching the line slope of reload curve and initial deformation curve is more greater. |
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| Keywords: | uniaxial experiments ordinary concrete complete stress-strain curves plastic hysteresis loop deformation modulus |
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