历史荷载作用对混凝土受压动态力学性能的影响 |
| |
引用本文: | 王敏,彭刚,胡海蛟,贺誉. 历史荷载作用对混凝土受压动态力学性能的影响[J]. 中国农村水利水电, 2013, 0(2): 92-94 |
| |
作者姓名: | 王敏 彭刚 胡海蛟 贺誉 |
| |
作者单位: | 三峡大学土木与建筑学院 |
| |
摘 要: | 对历经单调加载历史和循环加载历史后的混凝土,进行了应变速率为10-5、10-4、10-3/s下的单轴压缩试验。试验结果表明:(1)历经单调加载历史的混凝土,随着应变速率的提高,峰值应力、峰值应变、弹性模量均增加;(2)历经循环加载历史的混凝土,随着应变速率的提高,峰值应力和峰值应变均增加,而弹性模量则减小;(3)在应变速率为10-5/s时,历经单调加载历史比历经循环加载历史的混凝土的峰值应力和峰值应变大,但弹性模量相差很小;在应变速率为10-3/s时,历经单调加载历史比历经循环加载历史的混凝土的弹性模量大,但峰值应力和峰值应变相差很小。
|
关 键 词: | 混凝土 应变速率 加载历史 |
收稿时间: | 2012-10-16 |
修稿时间: | 2012-10-25 |
The Influence of Load Histories on Dynamic Mechanical Properties of Concrete |
| |
Abstract: | In this paper, the concrete after monotonic loading history and cyclic loading history is uniaxial compressed under the strain rate of 10-5、10-4、10-3/s.The results showed that:(1)after the concrete of monotonic loading history,as the strain rate increased,the peak stress, peak strain and elastic modulus are enhanced;(2)after concrete of cyclic loading history,as the strain rate increased,the peak stress and peak strain are increased,but the elastic modulus is decreased;(3)after monotonic loading history, the peak stress and peak strain at the strain rate of 10-5/s become bigger compared with the concrete of cyclic loading history, but the difference of elastic modulus is small,and in the strain rate of 10-3/s,the elastic modulus is high,but the difference between peak stress and peak strain is much smaller. |
| |
Keywords: | |
本文献已被 万方数据 等数据库收录! |
| 点击此处可从《中国农村水利水电》浏览原始摘要信息 |
|
点击此处可从《中国农村水利水电》下载全文 |
|