考虑颗粒形状的面板堆石坝振动台模型试验DEM模拟

PDF(1618 KB)

振动与冲击 ›› 2018, Vol. 37 ›› Issue (24) : 99-105.

论文

井向阳1，杨利福2,3，马刚3，周伟3

作者信息 +

DEM modeling of shaking table model test for CFRD considering particle shape

JING Xiangyang1，YANG Lifu2,3，MA Gang3，ZHOU Wei3

Author information +

文章历史 +

摘要

提出了一种复杂形状颗粒的DEM模拟方法，实现了包括凹多边形在内的复杂形状颗粒的模拟，通过参数控制使得生成的颗粒形状更加真实，模拟了面板堆石坝振动台模型试验，从细观角度揭示了面板堆石坝动力特性。计算结果表明，在地震作用下面板与底板容易滑动，随着峰值加速度的增大，下游坝坡颗粒滑移面角度变大，坝顶沉降和坝体断面剪胀加剧；震前坝体强力链法向接触力主轴方向接近于竖直方向，震后向下游偏转；随着峰值加速度的增大，法向接触力各向异性程度逐渐增强；在相同初始组构条件下面板堆石坝激发的摩擦激励是一定的，与加载条件无关。

Abstract

Using the finite element mesh generation method, a method of modeling convex or concave polygonal particles was proposed.Particles with more realistic shapes were generated by the control of parameters, and simulations of complex shaped particles including concave polygons were realized.DEM simulations of shaking table model test for concrete faced rock-fill dam (CFRD) in irregularly shaped grain were presented in this work and the dynamic characteristic were revealed from perspective of micro mechanics.The study results indicated that the concrete face slides from the base during earthquake.As the peak acceleration increasing, the dip angles of sliding plane for the grains in the downstream of CFRD increase and the crest settlement and skeleton dilatation become more intense.The major principal direction of normal contact forces was closed to the vertical before earthquake while the angle shifts to the downstream after earthquake.The anisotropy of normal contact forces increases with peak acceleration.Under the same initial fabrics, the average friction mobilization for CFRD was unvaried and irrelevant to the acceleration input.

导出引用

井向阳1，杨利福2,3，马刚3，周伟3. 考虑颗粒形状的面板堆石坝振动台模型试验DEM模拟[J]. 振动与冲击, 2018, 37(24): 99-105

JING Xiangyang1，YANG Lifu2,3，MA Gang3，ZHOU Wei3. DEM modeling of shaking table model test for CFRD considering particle shape[J]. Journal of Vibration and Shock, 2018, 37(24): 99-105

参考文献

[1] 杨正权,刘小生,汪小刚,等.高土石坝地震动力反应特性大型振动台模型试验研究[J]. 水利学报, 2014, 45(11):1-12.
YANG Zheng-quan,LIU Xiao-sheng,WANG Xiao-gang, et al. Study on large-scale shaking table model tests for dynamic response characteristics analysis of high rock-fill dam in earthquake[J]. SHUI LI XUE BAO, 2014, 45(11):1-12.
[2] 杨正权,刘小生,陈宁,等.地震作用下的两河口高土石坝地震残余变形和破坏振动台模型试验研究[J]. 水力发电学报, 2011,30(3):152-157.
YANG Zhengquan,LIU Xiaosheng1,CHEN Ning, et al. Study on shaking table model tests of seismic residual deformation and failure for Lianghekou high rock-fill dam[J]. JOURNAL OF HYDROELECTRIC ENGINEERING, 2011,30 (3):152-157.
[3] 杨正权,刘小生,刘启旺,等.猴子岩高面板堆石坝地震模拟振动台模型试验研究[J]. 地震工程与工程振动, 2010, 30(5):113-119.
YANG Zhengquan , LIU Xiaosheng , LIU Qiwang, et al. Study on shaking table model tests for Houziyan high concrete faced rock-fill dam[J]. JOURNAL OF EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, 2010, 30(5):113-119.
[4] 孔宪京, 刘福海, 刘君. 地震作用下面板堆石坝面板错台模型试验研究[J]. 岩土工程学报, 2012, 34(2): 258-267.
KONG Xian-jing, LIU Fu-hai, LIU Jun. Shaking table model tests on face-slab dislocation of concrete faced rock-fill dams under earthquakes[J]. Chinese Journal Geotechnical Engineering, 2012, 34(2): 258-267.
[5] 孔宪京,朱亚林,邹德高,等.土石坝坝坡模型振动台破坏试验的数值验证[J]. 岩石力学与工程学报, 2011, 30(supp1):2938-2945.
KONG Xianjing, ZHU Yalin, ZOU Degao, et al. Numerical verification of earth-rock dam slope failure during shaking table test [J]. Chinese Journal Geotechnical Engineering, 2011, 30(supp1):2938-2945.
[6] Linjuan Yuan, Xiaosheng Liu, Xiaogang Wang, etal. Seismic performance of earth-core and concrete-faced rock-fill dams by large-scale shaking table tests[J]. Soil Dynamics and Earthquake Engineering, 2014(56):1-12.
[7] Torisu S S, Sato J, Towhata I, et al. 1-G model tests and hollow cylindrical torsional shear experiments on seismic residual displacements of fill dams from the viewpoint of seismic performance-based design[J]. Soil Dynamics and Earthquake Engineering, 2010,30(6): 423-437.
[8] 徐泽平,侯瑜京,梁建辉.深覆盖层上混凝土面板堆石坝的离心模型试验研究[J]. 岩土工程学报, 2011, 32(9):1323-1328.
XU Ze-ping, HOU Yu-jing, LIANG Jian-hui. Centrifugal model tests on CFRD on deep alluvium foundation[J]. Chinese Journal Geotechnical Engineering, 2011,32(9):1323-1328.
[9] 程嵩,张建民.面板堆石坝的动力离心模型试验研究[J]. 地震工程与工程振动, 2011, 31(2):98-102.
CHENG Song, ZHANG Jianmin. Dynamic centrifuge model test on concrete-faced rockfill dam[J]. JOURNAL OF EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, 2011, 31(2):98-102.
[10] 程嵩,张建民.面板堆石坝震动响应及变形规律的试验研究[J]. 工程力学, 2012, 29(8):80-86.
CHENG Song , ZHANG Jian-min. CENTRIFUGE MODELING TEST OF DYNAMIC RESPONSE AND DEFORMATION LAW OF CONCRETE-FACED ROCKFILL DAM[J]. ENGINEERING MECHANICS, 2012,29(8):80-86.
[11] Mu-Kwang Kim,Sei-Hyun Lee, Yun Wook Choo, et al. Seismic behaviors of earth-core and concrete-faced rock-fill dams by dynamic centrifuge tests[J].Soil Dynamics and Earthquake Engineering, 2011, 31(11): 1579-1593.
[12] 刘汉龙,费康.考虑残余体应变的土石坝地震永久变形分析[J]. 岩土力学, 2013, 34(6): 1687-1695.
LIU Han-long,FEI Kang. Analysis of earthquake induced permanent deformation of rockfill dam considering residual volumetric strain[J]. Rock and Soil Mechanics,2013,34(6):1687-1695.
[13] 张锐,迟世春,林皋,等.地震加速度动态分布及对高土石坝坝坡抗震稳定的影响[J]. 岩土力学, 2008, 29(4): 1072-1076.
ZHANG Rui, CHI Shi-chun, LIN Gao, et al. Discussion on seismic coefficient of high earth-rock dams and its influence on dam slope seismic stability [J]. Rock and Soil Mechanics, 2008, 29(4): 1072-1076.
[14] Yalin Arici. Evaluation of the performance of the face slab of a CFRD during earthquake excitation[J]. Soil Dynamics and Earthquake Engineering, 2013, 55:71-82.
[15] Seiphoori A, Haeri S M, Karimi M. Three-dimensional nonlinear seismic analysis of concrete faced rockfill dams subjected to scattered P, SV, and SH waves considering the dam–foundation interaction effects[J]. Soil Dynamics and Earthquake Engineering, 2011, 31(5): 792-804.
[16] 孔宪京, 刘君,韩国城. 面板堆石坝模型动力破坏试验与数值仿真分析[J]. 岩土工程学报, 2003, 25(1):26-30.
KONG Xianjing, LIU Jun, HAN Guocheng. Dynamic failure test and numerical simulation of model concrete-faced rockfill dam[J]. Chinese Journal Geotechnical Engineering, 2012, 34(2): 258-267.
[17] 刘汉龙,杨贵.土石坝振动台模型试验颗粒流数值模拟分析[J]. 防灾减灾工程学报, 2009, 29(5): 479-484.
LIU Han-long, YANG Gui. PFC2DNumerical Analysis of Model Testing of Earth and Rock-Fill Dam on Shaking Table[J]. Journal of Disaster Prevention and Mitigation Engineering, 2009, 29(5): 479-484.
[18] 周伟, 常晓林, 周创兵, 等. 堆石体应力变形细观模拟的随机散粒体不连续变形模型及其应用[J]. 岩石力学与工程学报, 2009, 28(3): 491-499.
ZHOU Wei, CHANG Xiaolin, ZHOU Chuangbing, ZHU Kaixiang. Stochastic granule discontinuous deformation model of rockfill and its application[J].Chinese Journal of Rock Mechanics and Engineering, 2009, 28(3):491-499
[19] G, Zhao J. Fourier-Voronoi-based generation of realistic samples for discrete modelling of granular materials[J]. Granular Matter, 2012, 14(5): 621-638.
[20] Jensen R P, Bosscher P J, Plesha M E, et al. DEM simulation of granular media-structure interface: effects of surface roughness and particle shape[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1999, 23(6): 531-547.
[21] Ferellec J F, McDowell G R. A simple method to create complex particle shapes for DEM[J]. Geomechanics and Geoengineering: An International Journal, 2008, 3(3): 211-216.
[22] 蒋明镜,李立青,申志福. 双剪类流动模型的非圆形颗粒离散元数值验证[J]. 岩土工程学报, 2013, 35(4):619-626.
JIANG Ming-jing,LI Li-qing,SHEN Zhi-fu. Evaluation of double-shearing type kinematic models for granular flows by use of distinct element methods for non-circular particles [J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4):619-626.
[23] Wang L, Park J Y, Fu Y. Representation of real particles for DEM simulation using X-ray tomography[J]. Construction and Building Materials, 2007, 21(2): 338-346.
[24] 金磊,曾亚武,李欢,李晶晶. 基于不规则颗粒离散元的土石混合体大三轴数值模拟[J]. 岩土工程学报,2015, 37(5):829-838.
JIN Lei,ZENG Ya-wu,LI Huan,LI Jing-jing.Numerical simulation of large-scale triaxial tests on soil-rock mixture based on DEM of irregularly shaped particles[J].Chinese Journal of Geotechnical Engineering, 2015, 37(5): 829-838.
[25] 常晓林, 马刚, 周伟, 等. 颗粒形状及粒间摩擦角对堆石体宏观力学行为的影响[J]. 岩土工程学报, 2012, 34(4): 646-653.
CHANG Xiao-lin, MA Gang, ZHOU Wei, et al. Influences of particle shape and inter-particle friction angle on macroscopic response of rockfill[J].Chinese Journal of Geotechnical Engineering, 2012, 34(4): 646-653.
[26] 王振宇, 周伟, 杨利福, 等. 水平振动情况下颗粒系统振动分离机理的离散元数值研究[J]. 振动与冲击, 2016, 35(16): 24-29.
WANG Zhenyu, ZHOU Wei, YANG Lifu, et al. Numerical simulation of the microscopic mechanism of the particle separation under the condition of horizontal vibration[J]. JOUＲNAL OF VIBＲATION AND SHOCK, 2016, 35(16): 24-29.
[27] 孔宪京, 邹德高, 周扬, 等. 汶川地震中紫坪铺混凝土面板堆石坝震害分析[J]. 大连理工大学学报, 2009 (5): 667-674.
KONG Xian-jing, ZOU De-gao, ZHOU Yan, et al. Earthquake damage analysis of Zipingpu concrete face rock-fill dam during Wenchuan earthquake[J]. Journal of Dalian University of Technology, 2009 (5): 667-674.
[28] 陈生水, 霍家平, 章为民. “5• 12” 汶川地震对紫坪铺混凝土面板坝的影响及原因分析[J]. 岩土工程学报, 2008, 30(6): 795-801.
CHEN Sheng-shui,HUO Jia-ping, ZHANG Wei-min. Analysis of effects of ”5．12” Wenchuan Earthquake on Zipingpu Concrete Face Rockfill Dam[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(6): 795-801.
[29] Muthuswamy M, Tordesillas A. How do interparticle contact friction, packing density and degree of polydispersity affect force propagation in particulate assemblies?[J]. Journal of Statistical Mechanics: Theory and Experiment, 2006, 2006(09): P09003.
[30] Tordesillas A, Zhang J, Behringer R. Buckling force chains in dense granular assemblies: physical and numerical experiments[J]. Geomechanics and Geoengineering: An International Journal, 2009, 4(1): 3-16.
[31] Rothenburg L, Bathurst R J. Analytical study of induced anisotropy in idealized granular materials[J]. Geotechnique, 1989, 39(4): 601-614.