| 混凝土裂缝与内外约束关系研究 |
| |
| 引用本文： | 吉顺文,郑敏生,苏玉杰. 混凝土裂缝与内外约束关系研究[J]. 三峡大学学报(自然科学版), 2011, 33(3): 14-17 |
| |
| 作者姓名： | 吉顺文 郑敏生 苏玉杰 |
| |
| 作者单位： | 浙江省水利河口研究院,杭州,310020 |
| |
| 摘 要： | 水化反应过程中,温度变化和内部孔隙水散失是混凝土温度、自生体积和干缩等变形产生的主要原因.内外约束作用下,温度、自生体积和干缩等变形引起的应力很容易导致混凝土开裂.通过混凝土温度场和应力场精确仿真,对混凝土温度应变、自生体积变形和徐变进行分析.研究表明内部约束是水化反应前期混凝土产生的主要原因,后期混凝土裂缝则主要由外部约束所致.
|
| 关 键 词： | 混凝土裂缝 温度变形 自生体积变形 内外约束 约束度 |
Study of Relationships between Concrete Cracks and Internal and External Constraints |
| |
| Ji Shunwen,Zheng Minsheng,Su Yujie. Study of Relationships between Concrete Cracks and Internal and External Constraints[J]. Journal of China Three Gorges University(Natural Sciences), 2011, 33(3): 14-17 |
| |
| Authors: | Ji Shunwen Zheng Minsheng Su Yujie |
| |
| Affiliation: | Ji Shunwen Zheng Minsheng Su Yujie(Zhejiang Institute of Hydraulics & Estuary,Hangzhou 310020,China) |
| |
| Abstract: | During the hydration of cement,temperature variety and dissipation of pore water are the main reasons to cause the thermal deformation,autogenous deformation,shrinkage deformation and so on.Then,constrained by the internal and external constraints,the restrained deformations result in a relatively high stress that sometimes causes premature cracking in concrete.In order to realize the mechanisms mentioned above,the real temperature and stress fields simulation and analysis were carried out.The results show ... |
| |
| Keywords: | concrete cracks thermal deformation autogenous deformation internal and external constraints constraint degree |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
