超高面板堆石坝面板挤压破坏机理及数值模拟方法研究

周墨臻; 张丙印; 张宗亮; 冯业林

doi:10.11779/CJGE201508010

超高面板堆石坝面板挤压破坏机理及数值模拟方法研究 English Version

1. 清华大学水沙科学与水利水电工程国家重点实验室,北京 100084;
2. 中国电建集团昆明勘测设计研究院有限公司,云南昆明 650051

基金项目: 国家自然科学基金项目（51479099,51179092）; 国家重点实验室项目（2013-KY-4）

详细信息

作者简介:
周墨臻(1987- ),男,博士研究生,主要从事岩土工程研究。E-mail: 550847598@qq.com。

中图分类号: TV641.43
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- 文章访问数: 377
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出版历程
- 收稿日期: 2014-10-15
- 发布日期: 2015-08-24

Mechanisms and simulation methods for extrusion damage of concrete faces of high concrete-faced rockfill dams

1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
2. Power China Kunming Engineering Corporation Limited, Kunming 650051, China

摘要

摘要: 面板挤压破坏是影响超高面板堆石坝安全的核心问题。总结分析了国内外数座典型超高面板堆石坝工程中发生的面板挤压破坏现象及特征。论述了面板纵缝转动接触挤压效应的发生机制,认为由坝体变形所导致的面板转动挤压和位移挤压是导致面板发生挤压破坏的本质原因。基于非线性接触力学的方法,自主开发了可描述面板坝复杂多体接触特性的计算方法和三维有限元计算程序系统。使用局部子结构模型对面板纵缝的转动接触挤压效应进行了分析。计算结果表明,转动挤压和位移挤压均可在纵缝两侧面板表面部位引发严重的应力集中,可从量值上解释面板发生挤压破坏时面板中部挤压应变实测值和计算值仍远低于混凝土极限抗压应变的现象。
- 超高面板堆石坝 /
- 混凝土面板 /
- 挤压破坏 /
- 转动接触挤压效应 /
- 非线性接触
Abstract: One of the key safety problems of high concrete-faced rockfill dams (CFRD) is the extrusion damage of the concrete faces. Based on analyzing several examples of high CFRD projects, the common features of extrusion damage of concrete slabs are summarized. The rotary contact-based extrusion, consisting of rotary extrusion and translational extrusion caused by the deformation of dams, is considered as the mechanism of extrusion contact between rotary slabs and the essential reason of extrusion damage of concrete slabs. Three-dimensional finite element numerical software on the basis of nonlinear contact theory is developed to solve the multi-body contact problem in CFRD. The numerical results of a submodel show that both the rotary extrusion and translational extrusion can cause severe local stress concentration on the surface of concrete slabs along the vertical joints, and that the phenomenon, which both the observed and numerical compressive strains at the middle position of the slabs are far below the ultimate value when extrusion damage occurs, can be explained reasonably by the stress concentration factor.
- high concrete-faced rockfill dam /
- concrete slab /
- extrusion damage /
- rotary contact-based extrusion /
- nonlinear contact

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参考文献(16)

[1]	曹克明, 徐建军. 超高面板坝面板临界挠度探讨和设计改进[J]. 水力发电, 2009, 34(11): 98-102. (CAO Ke-ming, XU Jian-jun. Discussions on critical deflection of face slab and its design improvement for super-high CFRD[J]. Water Power, 2009, 34(11): 98-102. (in Chinese))
[2]	郦能惠. 高混凝土面板堆石坝设计理念探讨[J]. 岩土工程学报, 2007, 29(8): 1143-1150. (LI Neng-hui. New concept of design for high concrete face rockfill dams[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(8): 1143-1150. (in Chinese))
[3]	马洪琪, 曹克明. 超高面板坝的关键技术问题[J]. 中国工程科学, 2007, 9(11): 4-10. (MA Hong-qi, CAO Ke-ming. Key technology of supper-high CFRD[J]. Engineering Sciences, 2007, 9(11): 4-10. (in Chinese))
[4]	罗亮, 陈烨, 仲洪滔. 土工膜在大坝面板挤压破坏临时处理工程中的应用[J]. 大坝与安全, 2013(2): 48-51. (LUO Liang, CHEN Ye, ZHONG Hong-tao. Application of geomembrane in temporary treatment of extrusion damage of dam face slab[J]. Dam and Safety, 2013(2): 48-51. (in Chinese))
[5]	郦能惠, 王君利, 米占宽, 等. 高混凝土面板堆石坝变形安全内涵及其工程应用[J]. 岩土工程学报, 2012, 34(2): 193-201. (LI Neng-hui, WANG Jun-li, MI Zhan-kuan, et al. Connotation of deformation safety of high concrete face rockfill dams and its application[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(2): 193-201. (in Chinese))
[6]	徐泽平, 郭晨. 高面板堆石坝面板挤压破坏问题研究[J]. 水力发电, 2007, 33(9): 80-84. (XU Ze-ping, GUO Chen. Research on the concrete face slab rupture of high CFRD[J]. Water Power, 2007, 33(9): 81-84. (in Chinese))
[7]	邹德高, 尤华芳, 孔宪京, 等. 接缝简化模型及参数对面板堆石坝面板应力及接缝位移的影响研究[J]. 岩石力学与工程学报, 2009, 28(1): 3257-3263. (ZOU De-gao, YOU Hua-fang, KONG Xian-jing, et al. Research on joint simplified model and effects of joint parameters on panel stress and joint displacements of faced rockfill dam[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1): 3257-3263. (in Chinese))
[8]	曹克明, 汪易森, 徐建军, 等. 混凝土面板堆石坝[M]. 北京: 中国水利水电出版社, 2008: 147. (CAO Ke-ming, WANG Yi-seng, XU Jian-jun, et al. Concrete face rockfill dam[M]. Beijing: China Water Power Press, 2008: 147. (in Chinese))
[9]	郝巨涛, 杜振坤. 高混凝土面板堆石坝面板接缝挤压破坏预防措施研究[J]. 水力发电, 2008, 34(6): 41-44. (HAO Ju-tao, DU Zhen-kun. Precaution measures for the spalling failure of the slab joint concrete in high CFRDs[J]. Water Power, 2008, 34(6): 41-44. (in Chinese))
[10]	郦能惠, 杨泽艳. 中国混凝土面板堆石坝的技术进步[J]. 岩土工程学报, 2012, 34(8): 1361-1368. (LI Neng-hui, YANG Ze-yan. Technical advances in concrete face rockfill dams in China[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(8): 1361-1368. (in Chinese))
[11]	COOKE J B. Concrete-faced rockfill dam[J]. International Water Power and Dam Construction, 1991, 43(1): 11-15.
[12]	张丙印, 师瑞锋, 王刚. 高面板堆石坝面板脱空问题的接触力学分析[J]. 岩土工程学报, 2003, 25(3): 361-364. (ZHANG Bing-yin, SHI Rui-feng, WANG Gang. Contact analysis of separation between concrete slab and cushion layer in high concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(3): 361-364. (in Chinese))
[13]	HALLQUIST J O, GOUDREAU G L, BENSON D J. Sliding interfaces with contact-impact in large-scale Lagrangian computations[J]. Computer Methods in Applied Mechanics and Engineering, 1985, 51(1): 107-137.
[14]	POPP A, GITTERLE M, GEE M W, et al. A dual mortar approach for 3D finite deformation contact with consistent linearization[J]. International Journal for Numerical Methods in Engineering, 2010, 83(11): 1428-1465.
[15]	王勖成. 有限单元法[M]. 北京: 清华大学出版社, 2003: 675. (WANG Xu-cheng. Finite element method[M]. Beijing: Tsinghua University Press, 2003: 675. (in Chinese))
[16]	HÜEBER S, WOHLMUTH B I. A primal-dual active set strategy for non-linear multibody contact problems[J]. Computer Methods in Applied Mechanics and Engineering, 2005, 194(27): 3147-3166.