| 土工格栅与土动力相互作用的有限元分析 |
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| 引用本文： | 张兴强,陈文金,等.土工格栅与土动力相互作用的有限元分析[J].天津大学学报(自然科学与工程技术版),2001,34(4):525-528. |
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| 作者姓名： | 张兴强 陈文金 |
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| 作者单位： | [1]天津大学建工学院岩土工程研究所，天津300072 [2]海洋石油工程股份有限公司，天津300452 |
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| 摘 要： | 采用非线性弹簧－阻尼延迟器－质量块系统模拟土工格栅与土动力相互作用，薄单元模拟土工格栅与土接触面的动力变形特性,根据振动台试验结果推导出土工格栅纵肋与土的刚度和接触面的阻尼比，利用助 锚定板试验结果确定土工格栅横肋与土的刚度，并且采用集中刚度法形成接触面总刚，最后，基于该模型编制了模拟加筋材料与土动力相互作用的有限元分析程序G－D，并与加州大学UCLA加筋挡土墙实测值进行了比较，验证了分析模型的合理性，为研究动载作用下土工格栅与土动力相互作用机理提供了理论分析工具。
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| 关 键 词： | 纵肋 横肋 动力相互作用 非线性弹簧 阻尼延迟器 集中刚度 土工格栅 有限元分析 |
| 文章编号： | 0493-2137(2001)04-0525-04 |
| 修稿时间： | 2000年5月23日 |
FEM ANALYSIS ON DYNAMIC SOIL-GEOGRID INTERACTION |
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| ZHANG Xing qiang ,YAN Shu wang ,CHEN Wen jin.FEM ANALYSIS ON DYNAMIC SOIL-GEOGRID INTERACTION[J].Journal of Tianjin University(Science and Technology),2001,34(4):525-528. |
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| Authors: | ZHANG Xing qiang YAN Shu wang CHEN Wen jin |
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| Institution: | ZHANG Xing qiang 1,YAN Shu wang 1,CHEN Wen jin 2 |
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| Abstract: | Firstly,a system made up of nonlinear springs,dashpot and mass is used to simulate the dynamic interaction between soil and geogrid,and the thin layer element is used to simulate the dynamic deformation behavior of the soil geogrid interface.The equivalent stiffiness of the longitudinal ribs soil and the interface damping ratios can be determined in the shake table test.The stiffness of the transverse bars soil may be come into being by a method,named the concentration stiffness.Finally,based on the interface model,n FE procedure,the G D program,for simulation of the soil reinforcement material dynamic interaction is proposed.The results are compared with the observed data including acceleration time response from the UCLA reinforced soil retaining wall at the University of Califormia.The results show that the model and the G D program are correct. |
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| Keywords: | longitudinal rib transverse bar dynamic interaction nonlinear spring dashpot concentration stiffness |
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