人造多晶冰的动力学参数试验研究

朱占元; 陈士军; 凌贤长; 王立娜; 李琼林

人造多晶冰的动力学参数试验研究 English Version

朱占元^{1, 3},
陈士军^{2, 3},
凌贤长^{2, 3},
王立娜^{2, 3},
李琼林^{2, 3}

1. 四川农业大学城乡建设学院，四川都江堰 611830; 2. 哈尔滨工业大学土木工程学院，黑龙江哈尔滨 150090; 3. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室，甘肃兰州 730000

基金项目: 国家重点基础研究发展计划（973计划）项目（2012CB026 104）；国家自然科学基金项目（51078111）；铁道部科技研究开发计划项目（2009G010-E）；冻土工程国家重点实验室开放基金资助项目（SKLFSE201007，SKLFSE201214）

详细信息

作者简介:
朱占元(1974- )，男，四川开江人，博士，教授，主要从事冻土动力学与冻土工程、边坡工程、岩土工程数值仿真等方面的研究与教学工作。E-mail: zhuzyuan910@163.com。

中图分类号: TU43
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出版历程
- 收稿日期: 2012-06-07
- 发布日期: 2013-04-17

Experiment study on dynamic parameters of artificial polycrystalline ice

ZHU Zhan-yuan^{1, 3},
CHEN Shi-jun^{2, 3},
LING Xian-zhang^{2, 3},
WANG Li-na^{2, 3},
LI Qiong-lin^{2, 3}

1. Urban and Rural Construction College, Sichuan Agricultural University, Dujiangyan 611830, China; 2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 3. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 730000, China

摘要

摘要: 基于低温动三轴试验，研究人造多晶冰在轨道交通分级循环荷载作用下的本构关系与动力学参数指标。在不同负温、频率条件下，考察试件轴向动应力-应变关系曲线，获得冰的动力本构关系可以用线性黏弹性模型描述；动弹性模量随着温度的升高而降低，随频率增大而增大；黏性系数随着温度的升高而增大，随频率增大而减小的结论；并合理解释了温度、频率对冰的动力学参数指标的影响机理。
- 冰 /
- 动力本构关系与参数指标 /
- 低温动三轴试验 /
- 轨道交通荷载 /
- 轴向分级循环加载
Abstract: Based on the dynamic tri-axial tests at low temperature, the dynamic constitutive model and its parameters of artificial polycrystalline ice are studied under stepped axial cyclic loading. It is concluded that the dynamic constitutive relation of ice can be fitted by use of the linear viscoelastic model through the experiments under various temperatures and frequencies. Dynamic elastic modulus decreases with the rise of temperature, and increases with the rising frequency. Viscosity coefficient increases with the increasing temperature, and declines with the increase of frequency. Furthermore, the influences of temperature and frequency on the dynamic parameters of ice are interpreted rationally.
- ice /
- dynamic constitutive model and parameter /
- dynamic tri-axial test at low temperature /
- rail traffic loading /
- stepped axial cyclic loading

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参考文献(21)

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