| 受疲劳荷载作用后的预应力混凝土构件冻融循环试验与损伤模型 |
| |
| 引用本文： | 刘荣桂,刘涛,周伟玲,张益多,陈妤. 受疲劳荷载作用后的预应力混凝土构件冻融循环试验与损伤模型[J]. 陶瓷科学与艺术, 2011, 0(3) |
| |
| 作者姓名： | 刘荣桂 刘涛 周伟玲 张益多 陈妤 |
| |
| 作者单位： | 江苏大学理学院;江苏省建筑科学研究院; |
| |
| 基金项目： | 国家自然科学基金资助项目(50878098); 江苏大学博士创新计划资助项目(CX10B_002X) |
| |
| 摘 要： | 对8根预应力混凝土梁进行受不同疲劳荷载后的冻融循环试验,研究疲劳荷载作用后预应力混凝土结构的冻融损伤特性。试验结果表明:荷载循环对预应力混凝土冻融损伤的发展有明显影响。运用损伤理论,对混凝土冻融损伤的疲劳效应问题进行了分析,并结合Aas-Jakobsen的混凝土材料疲劳寿命公式,引入疲劳效应影响因子(f(m)),建立了基于相对动弹模量的冻融损伤演化模型。结果表明:该损伤模型具有较高的精度,与试验结果吻合较好,适合工程应用。
|
| 关 键 词： | 预应力混凝土 冻融循环试验 疲劳荷载 损伤 |
Freeze-thaw cycle test and damage mechanics model of PC members after fatigue loads |
| |
| LIU Ronggui,LIU Tao,ZHOU Weiling,ZHANG Yiduo,CHEN Yu. Freeze-thaw cycle test and damage mechanics model of PC members after fatigue loads[J]. Ceramics Science & Art, 2011, 0(3) |
| |
| Authors: | LIU Ronggui LIU Tao ZHOU Weiling ZHANG Yiduo CHEN Yu |
| |
| Affiliation: | LIU Ronggui1,LIU Tao1,ZHOU Weiling2,ZHANG Yiduo1,CHEN Yu1(1.Faculty of Science,Jiangsu University,Zhenjiang 212013,China,2.Jiangsu Research Institute of Building Science,Nanjing 210008,China) |
| |
| Abstract: | Through freeze-thaw cycle test results for 8 specimen pre-stressed concrete(PC) beams,the freeze-thaw damage characteristics of PC structures after fatigue loads were studied.The experimental results show that the fatigue loads had an important influence on the development of freeze-thaw damage.The damage theory was used to analyze the fatigue effect of freeze-thaw damage.Also,according to relative dynamic modulus of test beams,the fatigue load impact factor(f(m)) was introduced to establish the damage evol... |
| |
| Keywords: | pre-stressed concrete freeze-thaw cycle test fatigue load damage |
| 本文献已被 CNKI 等数据库收录！ |
|
