考虑堆石料软化特性的坝坡动力稳定和滑移变形分析

周扬; 邹德高; 徐斌; 滕晓威; 孔宪京

doi:10.11779/CJGE201609019

考虑堆石料软化特性的坝坡动力稳定和滑移变形分析 English Version

周扬^1,2,
邹德高^1,2, ,,
徐斌^1,2,
滕晓威²,
孔宪京^1,2

1. 海岸和近海工程国家重点试验室（大连理工大学）,辽宁大连116024;
2. 大连理工大学水利工程学院,辽宁大连116024

基金项目: 国家自然科学基金项目（51279025,51379028,51508071）

详细信息

作者简介:
周扬(1984- ),男,博士后,助理研究员,主要从事高土石坝抗震分析方面的研究工作。E-mail: zhouyang2012@dlut.edu.cn。

通讯作者:
邹德高，E-mail：zoudegao@dlut.edu.cn

中图分类号: TU43
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出版历程
- 收稿日期: 2015-07-09
- 发布日期: 2016-09-24

Dynamic stability and slip deformation of dam slope considering softening of rockfill materials

1. The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
2. The School of Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 对10组已建或拟建工程堆石料低围压下三轴固结排水剪的试验数据进行分析整理,得到相应的峰值强度和残余强度,并拟合出考虑堆石料软化的归一化残余强度曲线。在此基础上,采用有限元动力稳定和滑移分析方法分别进行考虑和不考虑堆石料软化的稳定计算,并对计算结果进行讨论。结果表明：在低围压条件下,堆石料发生应变软化现象,整理的堆石料归一化残余强度曲线可为考虑堆石料软化的有限元动力稳定计算提供参考;地震过程中,无论是坝坡的最小安全系数,还是滑裂面的滑移量,随着加速度峰值的增加,是否考虑软化的计算结果差别逐渐增大。考虑坝坡堆石体的软化,对高面板堆石坝极限抗震能力评价具有重要的意义。
- 高土石坝 /
- 堆石料 /
- 软化 /
- 坝坡稳定 /
- 滑移变形
Abstract: By analyzing the triaxial consolidation drained shear test data under low confining pressure derived from ten constructed and non-constructed projects, the corresponding peak strength and residual strength are achieved, and the normalized residual strength curve considering softening of rockfill is fitted. Based on the curve, the finite element dynamic stability calculation is implemented using the rigid sliding block method. The different conditions with or without softening of rockfill materials are taken into account respectively, and the calculated results are discussed. The results show that the rockfill material is easy to soften under low confining pressure. The normalized residual strength curve of rockfill can provide reference for the finite element dynamic stability calculation considering softening. The minimum safety factor of dam slope, the slippage of slip plane and the difference between considering softening or not gradually increase with the increae of the peak acceleration during the earthquake. It is important that the softening of rockfill of dam slope in the analysis of the ultimate aseismic capacity of high face rockfill dam should be considering.
- high rockfill dam /
- rockfill material /
- softening /
- stability of dam slope /
- slip deformation

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参考文献(25)

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考虑堆石料软化特性的坝坡动力稳定和滑移变形分析 English Version

作者简介: 周 扬(1984- ),男,博士后,助理研究员,主要从事高土石坝抗震分析方面的研究工作。E-mail: zhouyang2012@dlut.edu.cn。

通讯作者: 邹德高，E-mail：zoudegao@dlut.edu.cn

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出版历程

Dynamic stability and slip deformation of dam slope considering softening of rockfill materials

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出版历程

目录

作者简介:
周扬(1984- ),男,博士后,助理研究员,主要从事高土石坝抗震分析方面的研究工作。E-mail: zhouyang2012@dlut.edu.cn。

通讯作者:
邹德高，E-mail：zoudegao@dlut.edu.cn