| Experimental study on visco-elastic constitutive relationship and its parameters for geogrids |
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| 作者姓名： | XIAO Cheng-zhi LUAN Mao.tian YANG Qing PEI Jian-jun |
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| 作者单位： | [1]Institute of Geotechnical Engineenng, Dalian University of Technology, Dalian 116024, P. R. China [2]State Key Laboratory of Coastal and Offshore Engineenng, Dalian University of Technology, Dalian 116024, P. R. China [3]Qingdao Etsong Geognds Co., Ltd., Qingdao 266111, P. R China |
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| 摘 要： | 1 Introduction 1 The sheet type geogrids, which are characterized by grid structures with apertures of (10 to 100) mm between longitudinal and transverse ribs respectively are made from pre-extruded high density polyethylene sheets by punching and drawing process, and the drawing process forms the structures of grid and enhances the tensile strength of geogrids to a grea extent. Since the geogrids possess high tensile strength in nature, they are widely used as reinforcement in segmental retai…
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| 关 键 词： | 粘弹性 参数值 环境温度 泥土 力学性能 岩土工程 |
| 文章编号： | 1671-8224（2005）03-0139-05 |
| 收稿时间： | 2005-06-08 |
| 修稿时间： | 2005-07-11 |
Experimental study on visco-elastic constitutive relationship and its parameters for geogrids |
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| XIAO Cheng-zhi LUAN Mao.tian YANG Qing PEI Jian-jun.Experimental study on visco-elastic constitutive relationship and its parameters for geogrids[J].Journal of Chongqing University,2005,4(3):139-143. |
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| Authors: | XIAO Cheng-zhi LUAN Mao-tian YANG Qing PEI Jian-jun |
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| Abstract: | Geogrids are used as reinforcement materials widely in geotechnical and civil engineering fields. In this paper, a series of comparative tests on creep behavior of specific geo0grids are conducted in the laboratory under different combinations of loading levels and environmental temperature. Based on the test results, comparative analyses are made to study long-term behaviors of isochronous load-strain curves, creep curves and relaxation curves for the specified geogrids. Furthermore, a constitutive model based on theory of visco-elasticity and tests results is proposed for geogrids and a rational procedure is presented in detail for determining the relevant parameters of the proposed model. Finally, the effect of tests temperature on model parameter values is investigated. |
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| Keywords: | geogrids reep tests visco-elasticity constitutive model geogrids parameters constitutive relationship study effect values constitutive model theory test results rational procedure creep behavior relaxation analyses curves Based series specific laboratory different |
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