面板堆石坝新型结构离心模型试验研究

李从安; 文松霖; 李波; 胡波

doi:10.11779/CJGE2017S1042

面板堆石坝新型结构离心模型试验研究 English Version

长江科学院水利部岩土力学与工程重点实验室,湖北武汉 430010

详细信息

作者简介:
李从安(1990-),男,安徽六安人,硕士,主要从事离心模型试验研究。E-mail:925859419@qq.com。

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出版历程
- 收稿日期: 2016-12-01
- 发布日期: 2017-11-19

Centrifugal model tests on new type structure of CFRD

Key Laboratory of Geotechnical Mechanics and Engineering of Water Resources Ministry, Yangtze River Scientific Research Institute, Wuhan 430010, China

摘要

摘要: 采用离心模型试验技术探讨在覆盖层上增加盖板后坝体的变形特征。共进行三组离心模型试验,分别研究增加盖板及不同覆盖层类型对坝体变形的影响,以及防渗墙在坝体蓄水前后的变形规律。研究表明：在覆盖层上设置盖板可以减小坝体沉降,同时减小坝体不均匀沉降;不同覆盖层类型增加盖板后盖板弯矩分布规律一致,但软弱覆盖层上盖板弯矩变化幅度较大;增加盖板后优化了防渗墙的弯矩,离心模型试验揭示了面板堆石坝新型结构的变形和应力分布规律,为深厚覆盖层上面板堆石坝新型结构的研究与设计提供依据。
- 离心模型试验 /
- 深厚覆盖层 /
- 面板坝 /
- 新型结构
Abstract: The deformation properties of CFRD (concrete face rockfill dam) are studied through centrifuge tests by building concrete cover plate on the alluvium foundation. Three centrifugal model tests are conducted for the purpose of exploring the influences of dam after building concrete cover plate on the alluvium foundation with different materials. The relationship between construction period and storage period of diaphragm wall is conducted. The test results show that the cover plate can reduce the settlement of the dam and reduce the uneven settlement of the dam. The distribution laws of bending moment of the cover plate is consistent after adding cover plate on different alluviums. But the bending moment of the cover plate on the soft cover is larger. The bending moment of cutoff wall is optimized after adding cover plate. The centrifugal model tests reveal the deformation and stress distribution of the new structure of the concrete face rockfill dam, and it may provide the basis for the research and design of CFRD on deep overburden layer of new structure.
- centrifugal model test /
- deep alluvium foundation /
- CFRD /
- new type structure

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参考文献(7)

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