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| 动载作用下土工格栅加筋土计算模型的研究 | |
| 引用本文： | 张兴强,邓卫东,陈文金,闫澍旺.动载作用下土工格栅加筋土计算模型的研究[J].水利学报,2001,32(7):0091-0097. |
| 作者姓名： | 张兴强 邓卫东 陈文金 闫澍旺 |
| 作者单位： | 1. 津大学建工学院岩土工程研究所 2. 交通部重庆公路科学研究所 3. 海洋石油股份有限公司 |
| 摘 要： | 本文在前人工作的基础上提出了在动力荷载作用下土工格栅与土相互作用的有限元分析模型，该模型采用非线性弹簧-阻尼延迟器-质量块系统模拟土工格栅纵肋、横肋与土动力相互作用，采用集中刚度法形成总刚，可用来研究加筋土在动载作用下的变形特性。非线性弹簧的刚度、阻尼延迟器的阻尼比可以通过振动台试验获得。基于该模型编制了加筋土的动力有限元分析程序，有限元分析结果与实测值一致，表明了计算模型和分析程序的正确性。 |
| 关 键 词： | 加筋土 土工格栅与土动力相互作用 接触面变形模式 接触面模型 |
| 文章编号： | 0559-9350(2001)07-0091-07 |
Computation model for interaction of soil and geogrid under dynamic load |
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| ZHANG Xing-qiang,DENG Wei-dong,CHEN Wen-jin,YAN Shu-wang.Computation model for interaction of soil and geogrid under dynamic load[J].Journal of Hydraulic Engineering,2001,32(7):0091-0097. | |
| Authors: | ZHANG Xing-qiang DENG Wei-dong CHEN Wen-jin YAN Shu-wang |
| Affiliation: | 1.Tianjin University; 2.Chongqing Highway Scientific Research Institute,Ministry of Communication;3.CODEC |
| Abstract: | A 2\|D plane strain finite element interface model for analyzing interaction of soil and geogrid under dynamic load is proposed.The behaviors of dynamic interaction between the transverse bars,the longitudinal ribs and soil is simulated by a system consisting of nonlinear spring,damper and mass in order to study the deformation properties of reinforced soil.The equivalent siffness and damping ratios can be determined form the test on shaking table.A program for conputing the dynamic response of reinforced soil is proposed and the FEM analysis results agree well with the observation data.It shows that the model and the program are feasible. |
| Keywords: | reinforced soil soil-geogrid dynamic interaction deformation properties interface model |
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