| 贾金生,李新宇,郑璀莹.特高重力坝考虑高压水劈裂影响的初步研究[J].水利学报,2006,37(12):1509-1515 |
| 特高重力坝考虑高压水劈裂影响的初步研究 |
| Studies on safety problem of high gravity dams higher than 200m with consideration of hydraulic fracturing under water pressure |
| |
| DOI： |
| 中文关键词: 重力坝 水力劈裂 模拟试验 设计标准 有限元 |
| 英文关键词: gravity dams hydraulic fracturing design specification FEM |
| 基金项目: |
|
| 摘要点击次数: 1549 |
| 全文下载次数: 427 |
| 中文摘要: |
| 本文设计了混凝土试件高压水劈裂模拟试验，可近似模拟无拉、压应力作用下混凝土结构的水力劈裂问题。用试验结果和断裂力学分析校正了有限元分析程序。通过对比分析和有限元计算，研究了大狄克逊重力坝(坝高285m)和假定的坝高216.5m重力坝考虑高压水劈裂的安全问题，结果表明，200m以上的特高重力坝除按无拉应力和抗滑稳定准则设计外，还应考虑高压水的劈裂影响。 |
| 英文摘要: |
| The safety of high gravity dams with consideration of hydraulic fracturing under high water pressure was studied. A model test for simulating the hydraulic fracturing of concrete with different ages was carried out. Based on the results of the experiment, a numerical analysis by means of FEM was implemented. The study results of Grand Dixence gravity dam (H=285m) and a given gravity dam (H=2165m) show that it is reasonably to consider the hydraulic fracturing influence in design specification for gravity dam higher than 200m. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |