白鹤滩拱坝扩大基础加固效果研究

doi:10.13722/j.cnki.jrme.2014.1339

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Abstract Extended foundation of Baihetan high arch dam is considered as an important form of reinforcement to adapt to the unfavorable geological condition of the left bank foundation，the evaluation method research of its reinforcement effect is not yet fully definite. Three-dimensional numerical model was built，coupling with elaborate simulation of the foundation structure，and the reinforcement effect analysis of extended foundations conducted through elasto-plastic finite element method，during which an evaluation method was proposed based on deformation reinforcement theory. The result shows that extended foundation can help to increase the integral rigidity of dam body，improve the symmetry of the left and right arch abutments deformation and the stress state of rock mass near the base surface. The unbalanced force and plastic complementary energy(PCE) were taken to quantize the reinforcement effect. During the overloading process，the unbalanced forces of dam faces，dam toe and dam heel，area of dam surface yield zone were reduced by extended foundation，while the PCEs of different statistical parts consequently decrease as well. Thus，the stabilities of these critical region of arch dam engineering were promoted by it. The research focusing on the extended foundation proves the necessity of this reinforcement measure，and will be useful to understanding its reinforcement mechanism，which is also expected to have a vital significance for design and practice of high arch dam engineering.

Key words： hydraulic engineering high arch dam extended foundation reinforcement effect unbalanced force pedestal

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	Articles by authors
	SONG Ziheng1
	LIU Yaoru1
	YANG Qiang1
	XU Jianrong2
	HE Mingjie2
	ZHANG Weidi2

Cite this article:

SONG Ziheng1,LIU Yaoru1,YANG Qiang1, et al. STUDY OF REINFORCEMENT EFFECT ANALYSIS OF BAIHETAN ARCH DAM EXTENDED FOUNDATION[J]. , 2015, 34(S2): 4403-4411.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1339 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4403

[1]	何明杰，徐建军，徐建荣. 白鹤滩非对称性拱坝体形研究[J]. 水力发电，2011，37(3)：32-34.(HE Mingjie，XU Jianjun，XU Jianrong，Study on the shape of Baihetan nonsymmetrical arch dam[J]. Water Power，2011，37(3)：32-34.(in Chinese))
[2]	兰仁烈.拱坝应力分析——有垫座的拱冠梁法[J]. 水电站设计，1997，13(2)：35-40.(LAN Renlie. Stress analysisof arch dam with pedestal based on crown cantilever method[J]. Designof Hydroelectric Power Station，1997，13(2)：35-40.(in Chinese))
[3]	ZHANGL，LIU Y R，YANG Q. Evaluation of reinforcement and analysis of stability of a high-arch dam based on geomechanical model testing[J]. Rock Mechanics and Rock Engineering，2015，48(2)：803-818.
[4]	林鹏，王仁坤，康绳祖，等.特高拱坝基础破坏、加固与稳定关键问题研究[J]. 岩石力学与工程学报，2011，30(10)：1 945-1 958. (LIN Peng，WANG Renkun，KANG Shengzu，et al. Key problems of foundation failure，reinforcement and stability for superhigh arch dams[J]. ChineseJournal of Rock Mechanics and Engineering，2011，30(10)：1 945-1 958.(in Chinese))
[5]	杨庚鑫，陈建叶，张林，等. 混凝土传力抗剪结构在拱坝坝肩加固处理中的效果分析[J].四川大学学报：工程科学版，2013，45(3)：34-39.(YANG Gengxin，CHEN Jianye，ZHANG Lin，et al. Analysisoneffect of concretetransmissionandshearresistancestructureinarchdamabutment reinforcement[J]. Journal of Sichuan University：Engineering Science Edition，2013，45(3)：34-39.(in Chinese))
[6]	周维垣，林鹏，周雅能，等. 高拱坝基础大垫座及周边缝设置研究[J]. 岩石力学与工程学报，2008，27(10)：1959-1967.(ZHOU Weiyuan，LIN Pen，ZHOU Yaneng，et al. Research on concrete socket and peripheral joint for high arch dam foundation[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(10)：1959-1967.(in Chinese))
[7]	陈卫忠，朱维申，邱祥波，等. 小湾水电站拱坝坝肩岩体加固方案分析研究. 岩石力学与工程学报，2002，21(3)：374-378.(CHEN Weizhong，ZHU Weishen，QIU Xiangbo，et al. Analysis of reinforcement schemes forrock mass of Xiaowanhydropower station arch dam abutments[J].Chinese Journal of Rock Mechanics and Engineering，2002，21(3)：374-378.(in Chinese))
[8]	宁宇，徐卫亚，郑文棠，等. 白鹤滩水电站拱坝及坝肩加固效果分析及整体安全度评价[J]. 岩石力学与工程学报，2008，27(9)：1890-1898.(NING Yu，XU Weiya，ZHENG Wentang，et al.Reinforcement effect analysis and global safety evaluation of arch dam and abutment of Baihetan hydropower station[J].Chinese Journal of Rock Mechanics and Engineering，2008，27(9)：1890-1898.(in Chinese))
[9]	张肖，张建海，周钟，等. 锦屏一级高拱坝大垫座稳定性研究[J]. 工程力学，2010，27(增1)：232-235.(ZHANG Xiao，ZHANG Jianhai，ZHOU Zhong，et al. The study of the high arch dam exceptionally large foundation cushion stability of Jingping I hydropower project[J]. Engineering Mechanics，2010，27(Supp.1)：232-235.(in Chinese))
[10]	胡著秀，张建海，周钟，等.锦屏一级高拱坝坝基加固效果分析[J]. 岩土力学，2010，31(9)：2861-2868.(HU Zhuxiu，ZHANG Jianhai，ZHOU Zhong，et al. Analysis of stress and deformation of Jinping I high arch dam after foundation reinforcement[J]. Rock and Soil Mechanics，2010，31(9)：2861-2868.(in Chinese))
[11]	LONG Y C，ZHANG C H，XU Y J. Nonlinear seismic analyses of a high gravity dam with and without the presence of reinforcement[J]. Engineering Structures，2009，31(10)：2486-2494.
[12]	杨强，薛利军，王仁坤，等. 岩体变形加固理论及非平衡态弹塑性力学[J]. 岩石力学与工程学报，2005，24(20)：3704-3712.(YANG Qiang，XUE Lijun，WANG Renkun，et al. Reinforcement theory considering deformation mechanism of rock mass and non-equilibriumelasto-plastic mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3704-3712.(in Chinese))
[13]	YANG Q，LIU Y R，CHEN Y R，et al. Deformation reinforcement theory and its application to high arch dams[J]. Science in China Series E：Technological Sciences，2008，51(2)：32-47.
[14]	任青文.高拱坝安全性研究现状及存在问题分析[J]. 水利学报，2007，38(9)：1023-1031.(REN Qingwen. Analysis of the existing situations and problems in safety research of high arch dam[J]. Journal of Hydraulic Engineering，2007，38(9)：1023-1031.(in Chinese))
[15]	SIMO J C，KENNEDY J G，GOVINDJEE S. Non-smooth multisurfaceplasticity and viscoplasticity，loading/unloading conditions and numerical algorithms[J]. International Journal for Numerical Methods in Engineering，1988，26(10)：2161-2185.
[16]	杨强，陈英儒，刘耀儒. 基于变形加固理论的高拱坝坝踵开裂分析[J]. 水利学报，2008，39(1)：20-26.(YANG Qiang，CHEN Yingru，LIU Yaoru. Analysis of high arch dam heel cracking on deformation reinforcement theory[J]. Journal of Hydraulic Engineering，2008，39(1)：20-26.(in Chinese))