| 孙君森,林鸿镁.重力坝设计新思路[J].水利学报,2004,35(2):0062-0067 |
| 重力坝设计新思路 |
| New design philosophy for gravity dams |
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| DOI： |
| 中文关键词: 碾压混凝土坝 温度裂缝 防渗结构 功能分开 设计新思路 |
| 英文关键词: RCC dam temperature crack impervious structure functional separation new design philosophy |
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| 中文摘要: |
| 碾压混凝土（RCC)筑坝技术是混凝土筑坝技术在材料与施工技术上的革命，本文从RCC坝的现状入手，分析大坝产生裂缝和导致渗漏的原因，论证了尽可能降低重力坝坝体混凝土中的胶凝材料用量，就可避免温度裂缝的发生。提出的重力坝设计新思路是：坝体混凝土只满足应力与稳定的要求，无需承担防渗功能，而大坝的防渗功能，应由上游面专门设置的防渗结构来承担，即大坝的设计应体现功能分开的原则。 |
| 英文摘要: |
| This paper starts with the present situation of RCC dams, analyzes the causes of cracking and seepage occurred in dams, and demonstrates that minimizing the cementing material consumption in concrete gravity dam may effectively control the cracks due to temperature. The new philosophy for gravity dams is as following:the dam body concrete should only satisfy the stress and stability requirements, the seepage control function should be performed by the impervious structure arranged at the upstream face of the dam. This means the principle of functional separation should be respected in dam design. |
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