1. Institute of Disaster Prevention Engineering, Zhejiang University, Hangzhou 310058, China; 2. Public Works Research Institute, Ibaraki-ken 305-851, Japan
Abstract：Based on the Tatsuoka's cumulative damage theory of soil strains under irregular loadings, a numerical analysis method for the earthquake-induced permanent deformation of rockfill dams is proposed. The mechanical experiments of the rockfill materials are carried out by use of the large static and dynamic triaxial apparatus, and the material parameters related to the stress-strain relationship and cumulative strain model are determined. By use of the proposed method, the earthquake-induced permanent deformation characteristics of the rockfill dam under construction and after completion are studied respectively for the Iwate-Miyagi Nairiku earthquake of M7.2 on 14 June 2008 in Japan. The results show that the earthquake-induced settlement computed by the proposed method is basically consistent with the measured one under the construction of the dam. Moreover, the predicted value of the earthquake-induced settlement at the crest after the completion of the dam is within the reasonable range by comparison of the measured data of the other similar dams.
[1] NEWMARK N M. Effects of earthquakes on dams and embankments[J]. Géotechnique, 1965,152:139-160. [2] SERFF N, SEED H B, MAKDISI F I,et al. Earthquake induced deformations of earth dams[R]. Report No. EERC 7624, Earthquake Engineering Research Centre,University of California, Berkeley, 1976. [3] TANIGUCHI E, WHITMAN R V, MARR W A. Prediction of earthquake induced deformation of earth dams[J]. Soils and Foundations, 1983,234:126-132. [4] 陈生水,沈珠江. 钢筋混凝土面板坝的地震永久变形分析[J]. 岩土工程学报, 1990,123:66-72. CHEN Sheng-shui, SHEN Zhu-jiang. Analysis of earthquake-induced deformation of reinforced-concrete face rock-fill dam[J]. Chinese Journal of Geotechnical Engineering, 1990, 123: 66-72. (in Chinese) [5] KUWANO J, ISHIHARA K, HAYA H. Analysis on permanent deformation of embankments caused by earthquakes[J]. Soils and Foundations, 1991,313:97-110. [6] 刘汉龙,陆兆溱,钱家欢. 土石坝地震永久变形分析[J]. 河海大学学报, 1996,241:91-96. LIU Han-long, LU Zhao-zhen, QIAN Jia-huan. Earthquake-induced permanent deformation of earth-rock dams[J]. Journal of Hohai University, 1996, 241: 91-96. (in Chinese) [7] 迟世春,林 皋,孔宪京. 堆石料残余体应变对计算面板堆石坝永久变形的影响[J]. 水力发电学报, 1998,601:59-67. CHI Shi-chun, LIN Gao, KONG Xian-jing. Influence of residual volumetric strain of rock fill material on calculated permanent deformation of concrete faced rockfill dams[J]. Journal of Hydroelectric Engineering, 1998, 601: 59-67. (in Chinese) [8] 崔 娟,沈振中. 高沥青混凝土心墙混合坝地震永久变形特性[J]. 水电能源科学, 2010,281:73-76. CUI Juan, SHEN Zhen-zhong. Characteristics of earthquake induced permanent deformation of a high composite dam with asphalt concrete core wall[J]. Water Resources and Power, 2010, 281: 73-76. (in Chinese) [9] 赵剑明,刘小生,刘启旺,等. 先期震动对土石坝地震永久变形的影响[J]. 世界地震工程, 2011,271:28-33. ZHAO Jian-ming, LIU Xiao-sheng, LIU Qi-wang, et al. Study on the effect of pre-vibration on earthquake-induced permanent deformation of an earth-rock fill dam[J]. World Earthquake Engineering, 2011, 271 [10] 邹德高,徐 斌,孔宪京,等. 基于广义塑性模型的高面板堆石坝静、动力分析[J]. 水力发电学报, 2011,306:109-116. ZOU De-gao, XU Bin, KONG Xian-jing, et al. Static and dynamic analysis of high concrete-face rockfill dam based on generalized plastic model[J]. Journal of Hydroelectric Engineering, 2011, 306 [11] TATSUOKA F, MAEDA S, OCHI K. Prediction of cyclic undrained strength of sand subjected to irregular loadings[J]. Soils and Foundations, 1986,262:73-90. [12] 沈珠江,徐 刚. 堆石料的动力变形特性[J]. 水利水运科学研究, 1996,62:143-150. SHEN Zhu-jiang, XU Gang. Deformation behavior of rock material under cyclic loading[J]. Hydro-Science and Engineering, 1996, 62 [13] 王昆耀,常亚屏,陈 宁. 往返荷载下粗粒土的残余变形特性[J]. 土木工程学报, 2000,333:48-53. WANG Kun-yao, CHANG Ya-ping, CHEN Ning. Residual deformation characteristics of coarse-grained soils under cyclic loading[J]. China Civil Engineering Journal, 2000, 333 [14] 黄茂松,李进军,李兴照. 饱和软黏土的不排水循环累积变形特性[J]. 岩土工程学报, 2006,287:891-895. HUANG Mao-song, LI Jin-jun, LI Xing-zhao. Cumulative deformation behaviour of soft clay in cyclic undrained tests[J]. Chinese Journal of Geotechnical Engineering, 2006, 287: 891-895. (in Chinese) [15] 邹德高,孟凡伟,孔宪京,等. 堆石料残余变形特性研究[J]. 岩土工程学报, 2008,306:807-812. ZOU De-gao, MENG Fan-wei, KONG Xian-jing, et al. Residual deformation behavior of rock-fill materials[J]. Chinese Journal of Geotechnical Engineering, 2008, 306 [16] OHMACHI T, TAHARA T. Nonlinear earthquake response characteristics of a central clay core rockfill dam[J]. Soils and Foundations, 2011,512:227-238.
