| 坝后背管结构安全度初步评价 |
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| 引用本文： | 蒋锁红,冯兴中.坝后背管结构安全度初步评价[J].西北水电,2005(3):20-23. |
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| 作者姓名： | 蒋锁红 冯兴中 |
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| 作者单位： | 1. 富源电力集团股份有限公司,西宁,810001
2. 中国水电顾问集团西北勘测设计研究院 |
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| 摘 要： | 根据坝后背管结构力学弹性中心法计算结果，管腰混凝土开裂后外圈钢筋应力水平很高，有些工程甚至超过了钢筋的屈服点，远远突破了有关规范的规定，需要对背管结构的安全度进行重新评价。
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| 关 键 词： | 背管 应力 塑性 安全度 |
| 文章编号： | 1006-2610（2005）03-0020-04 |
| 收稿时间： | 2005-06-09 |
| 修稿时间： | 2005年6月9日 |
Preliminary evaluation on the safety degree of steel penstock behind the dam |
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| JIANG Suo hong.Preliminary evaluation on the safety degree of steel penstock behind the dam[J].Northwest Water Power,2005(3):20-23. |
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| Authors: | JIANG Suo hong |
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| Abstract: | According to calculating results of the elastic centre method of structural mechanics for the steel penstock behind the dam, the outer reinforcement stress is rather high after concrete cracking in the waist of steel penstock, even exceeding yield point of the reinforcement in some existing projects, which is out of the relevant Specifications. Therefore, it needs to reassess the degree of safety. |
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| Keywords: | Steel penstock stress safety |
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