Simulation for interaction between geogrids and soil by cohesive zone model
CHEN Rong1,2, LI Bo1,2, HAO Dong-xue1,2, GAO Yu-cong1,2
1. School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin 132012, China; 2. Institute of Geotechnical Engineering, Northeast Electric Power University, Jilin 132012, China
Abstract：The cohesive zone model is widely used in the fracture numerical simulation of bonded metal members. In order to deeply analyze the interaction between geogrids and soil, the cohesive zone model is adopted at the transverse ribs of geogrids and penalty function method is adopted at the longitudinal ribs to simulate the pullout tests of geogrids. The parameters of model can be obtained from the data of pullout tests on individual ribs. The results show that the cohesive zone model can perfectly simulate the passive resistance of transverse ribs, and the failure mode corresponds to the punching failure mode proposed by Jewell. The passive resistance of the transverse ribs accounts for about 71% of the whole pullout force. The simulated results have well verified the accuracy and feasibility of adopting the cohesive force model at the transverse ribs of the grid.
陈榕, 李博, 郝冬雪, 高宇聪. 基于黏聚力模型的土工格栅筋土界面作用模拟方法[J]. 岩土工程学报, 2020, 42(5): 934-940.
CHEN Rong, LI Bo, HAO Dong-xue, GAO Yu-cong. Simulation for interaction between geogrids and soil by cohesive zone model. Chinese J. Geot. Eng., 2020, 42(5): 934-940.
[1] 费康, 刘汉龙. 桩承式加筋路堤的现场试验及数值分析[J]. 岩土力学, 2009, 30(4): 1004-1012. (FEI Kang, LIU Han-long.Field test study and numerical analysis of a geogrid-reinforced and pile-supported embankment[J]. Rock and Soil Mechanics, 2009, 30(4): 1004-1012. (in Chinese)) [2] 孙立强, 闫澍旺, 徐余. 软土路基“波浪型”不均匀沉降及其机制分析[J]. 岩土力学, 2011, 32(增刊1): 526-531. (SUN Li-qiang, YAN Shu-wang, XU Yu.Study of wave type asymmetry settlement and its mechanism of soft soil roadbed[J]. Rock and Soil Mechanics, 2011, 32(S1): 526-531. (in Chinese)) [3] 唐晓松, 郑颖人, 王永甫. 加筋土挡墙与抗滑桩联合支挡的分析计算[J]. 土木建筑与环境工程, 2011, 33(增刊2): 42-46. (TANG Xiao-song, ZHENG Ying-ren, WANG Yong-fu.Analysis and calculation of combined treatment of reinforced earth-retaining wall and anti-slide piles[J]. Journal of Civil, Architectural and Environmental Engineering, 2011, 33(S2): 42-46. (in Chinese)) [4] 沈立森, 杨广庆, 程和堂, 等. 高速公路路基加宽土工格栅加筋优化技术研究[J]. 岩土工程学报, 2013, 35(4): 789-793. (SHEN li-sen, YANG Guang-qing, CHENG He-tang, et al. Optimization technology for geogrid reinforced subgrade widening projects of highways[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 789-793. (in Chinese)) [5] GU F, LUO X, LUO R.Numerical modeling of geogrid-reinforced flexible pavement and corresponding validation using large-scale tank test[J]. Construction and Building Materials, 2016, 122: 214-230. [6] LEHN J, MOORMANN C, ASCHRAFI J.Numerical investigations on the load distribution over the geogrid of a basal reinforced piled embankment under cyclic loading[J]. Procedia Engineer, 2016, 143: 435-444. [7] 陈榕, 郝冬雪, 栾茂田, 等. 土工格栅横肋与纵肋加筋机理研究[J]. 建筑材料学报, 2013, 16(6): 544-548. (CHEN Rong, HAO Dong-xue, LUAN Mao-tian, et al.Reinforcement mechanism of transverse and longitudinal geogrid ribs[J]. Journal of Building Materials, 2013, 16(6): 544-548. (in Chinese)) [8] 王家全, 陆梦梁, 周岳富, 等. 土工格栅纵横肋的筋土承载特性分析[J]. 岩土工程学报, 2018, 40(1): 186-193. (WANG Jia-quan, LU Meng-liang, ZHOU Yue-fu, et al.Bearing characteristics of reinforced soil with longitudinal and transverse ribs of geogrids[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(1): 186-193. (in Chinese)) [9] DUGDALE D S.Yielding of steel sheets containing slits[J]. Journal of the Mechanics and Physics of Solids, 1960, 8(2): 100-104. [10] BARENBLATT G I.The formation of equilibrium cracks during brittle fracture: general ideas and hypotheses, axially-symmetric cracks[J]. Applied Mathematics and Mechanics, 1959, 23(3): 622-636. [11] TVERGAARD V, HUTCHINSON J W.The relation between crack growth resistance and fracture process parameters in elastic-plastic solids[J]. Journal of Mechanics and Physics of Solids, 1992, 40: 1377-1397. [12] CAMACHO G T, ORTIZ M.Computational modeling of impact damage in brittle materials[J]. International Journal of Solids and Structures, 1996, 33: 2899-2938. [13] ALFANO M, FURGIUELE F, LEONARDI A, et al.Mode I fracture of adhesive joints using tailored cohesive zone models[J]. International Journal of Fracture, 2009, 157: 193-204. [14] SIDNEI H C T, BENEDITO S, JORGE G Z. Pullout resistance of individual longitudinal and transverse geogrid ribs[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2007, 37: 37-50. [15] KIKUCHI N, SONG Y J.Penalty/finite-element approximation of a class of unilateral problems in linear elasticity[J]. Quarterly of Applied Mathematics, 1981, 39(1): 1-22. [16] HUNĚK I. On a penalty formulation for contact -impact problems[J]. Computers and Structures, 1993, 48(2): 193-203. [17] CHEN Rong, LUAN Mao-tian, HAO Dong-xue.Improved simulation method about soil-geogrid interaction of reinforced of earth structure in FEM[J]. Transactions of Tianjin University, 2011, 17: 220-228. [18] JEWELL R A, MILLIGAN G W E, SARSBY R W, et al. Interaction between soil and geogrids[C]//Proceeding, Symposium on Polymer Grid Reinforcement in Civil Engineering, Science and Engineering Research Council and Netlon Limited, 1984, London: 18-30. [19] 周健, 唐艳群, 王家全, 等. 土工格栅横肋与砂土接触面的细观试验[J]. 同济大学学报(自然科学版), 2010, 38(8): 1129-1134. (ZHOU Jian, TANG Yan-qun, WANG Jia-quan, et al. Mesoscopical study on interface between transvers rib of geogrid and sand[J]. Journal of Tongji University (Natural Science), 2010, 38(8): 1129-1134. ( in Chinese))
