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| 土工格栅蠕变特性的试验研究及粘弹性本构模型 | |
| 引用本文： | 栾茂田,肖成志,杨庆,裴建军.土工格栅蠕变特性的试验研究及粘弹性本构模型[J].岩土力学,2005,26(2):187-192. |
| 作者姓名： | 栾茂田 肖成志 杨庆 裴建军 |
| 作者单位： | 1. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;大连理工大学,土木水利学院岩土工程研究所,辽宁,大连,116024;中国科学院武汉岩土力学研究所,湖北,武汉,430071 2. 大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024;大连理工大学,土木水利学院岩土工程研究所,辽宁,大连,116024 3. 青岛頤中格栅股份有限公司,山东,青岛,266111 |
| 基金项目： | 教育部跨世纪人才培养计划研究基金(No.教技函[1999]2 号)，中国科学院武汉岩土力学研究所前沿领域基础研究基金资助项目(No.Q110305). |
| 摘 要： | 土工格栅的蠕变特性是影响土工格栅加筋支挡结构长期工作性能的重要因素。通过实验室内蠕变试验,针对不同荷载和温度组合,对土工格栅的蠕变特性进行了对比试验。通过对试验结果的综合比较,详细地分析了土工格栅载荷-应变等时曲线、蠕变曲线及松驰曲线的变化特征,由此并基于粘弹性理论提出了能够反映土工格栅蠕变特性的粘弹性本构模型,提出了模型参数的合理确定方法。并通过模型预测与试验结果的对比论证了所建议粘弹性本构模型的可靠性。 |
| 关 键 词： | 土工格栅 土工格栅加筋支挡结构 蠕变特性 蠕变试验 粘弹性本构模型 |
| 文章编号： | 1000-7598-(2005)02-0187-06 |
| 收稿时间： | 2004-03-24 |
| 修稿时间： | 2004年3月24日 |
Experimental study on creep properties and viscoelasticity constitutive relationship for geogrids |
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| LUAN Mao-tian,XIAO Cheng-zhi,YANG Qing,PEI Jian-jun.Experimental study on creep properties and viscoelasticity constitutive relationship for geogrids[J].Rock and Soil Mechanics,2005,26(2):187-192. | |
| Authors: | LUAN Mao-tian XIAO Cheng-zhi YANG Qing PEI Jian-jun |
| Institution: | 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China; 2. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian University of Technology, Dalian 116024, China; 3. Institute of Rock and Soil Mechanics, The Chinese Academy of Sciences, Wuhan 430071, China; 4. Qingdao Etsong Geogrids Co., Ltd., Qingdao 266111, China |
| Abstract: | Considering the fact that the creep properties of geogrids are fundamental and important factors on the long-term behavior of geogrid-reinforced earth structures, a series of comparative experimental tests of the creep properties of geogrids are conducted in the laboratory under different combinations of externally-applied load and environmental temperature. Based on the experimental results, comparative analyses are made to examine characteristics of isochronous load-strain curves, creep curves and relaxation curves of geogrids. Furthermore, a constitutive model based on viscoelasticity is proposed for geogrids and a rational procedure based on experimental tests is presented for defining the relevant parameters of the model. The proposed model is verified by comparing the prediction of the model and experimental results. It is shown that the viscoelasticity creep model can mainly display long-term behavior of geogrids. |
| Keywords: | geogrids geogrid-reinforced earth structures creep behavior creep tests viscoelasticity constitutive model |
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