| 混凝土坝碱骨料反应模型及其长期运行分析 | |
| 潘坚文 ; 徐艳杰 ; 金峰 ; 张楚汉 ; PAN Jianwen ; XU Yanjie ; JIN Feng ; ZHANG Chuhan | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 水工材料 长期性能 碱骨料反应模型 混凝土坝 耦合作用 hydraulic engineering hydropower station technically exploitable capability degree of development Xiluodu hydropower station TV431 |
| 其他题名 | Modeling of long-term behavior of concrete dams affected by alkali-aggregate reaction |
| 中文摘要 | 本文建立了混凝土坝长期运行碱骨料反应模型。该模型考虑碱骨料化学反应与力学的耦合作用,碱骨料化学反应动力学考虑温度、相对湿度的非均匀分布和混凝土应力状态的影响,混凝土的力学行为包括弹塑性损伤和长期蠕变效应。采用该模型分析了受碱骨料反应作用的法国Temple-sur-Lot闸坝长期运行性态,计算得到的坝体变形与实测结果吻合良好,损伤开裂情况也与实际裂缝分布接近。因此,该模型适用于分析和预测遭受碱骨料反应病害的混凝土坝长期运行的膨胀变形和损伤开裂行为,可为工程修复提供参考。; A numerical model for long-term behavior of concrete dams affected by alkali-aggregate reaction(AAR) is developed. This model combines the kinetics of AAR with a plastic-damage model and thus it can couple chemical effect with mechanical behavior. It also considers the influences of nonuniform temperature and relative humidity distribution in the concrete affected and the effects of stress state on AAR-induced expansion and long-term creep strain. The model has been applied to analysis on the long-term behavior of the Temple-sur-Lot dam that is suffering from AAR. The calculations of swelling displacements of the dam are in good agreement with the measurements, and the cracking pattern is also close to the in-situ observation. Therefore, this model is capable of predicting the swelling and cracking of AAR-affected concrete dams in long-term operation. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148758]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 潘坚文,徐艳杰,金峰,等. 混凝土坝碱骨料反应模型及其长期运行分析[J],2016, 2016. |
| APA | 潘坚文.,徐艳杰.,金峰.,张楚汉.,PAN Jianwen.,...&ZHANG Chuhan.(2016).混凝土坝碱骨料反应模型及其长期运行分析.. |
| MLA | 潘坚文,et al."混凝土坝碱骨料反应模型及其长期运行分析".(2016). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论