| Research status and prospect of tensile strength of frozen soil北大核心CSCD |
| |
| 引用本文： | 王海航,周扬,赵晓东,王建州,周国庆.Research status and prospect of tensile strength of frozen soil北大核心CSCD[J].冰川冻土,2022,44(6):1807-1819. |
| |
| 作者姓名： | 王海航 周扬 赵晓东 王建州 周国庆 |
| |
| 作者单位： | 1.中国矿业大学 深部岩土力学与地下工程国家重点实验室，江苏 徐州 221116;2.中国矿业大学 力学与土木工程学院，江苏 徐州 221116 |
| |
| 基金项目： | 国家自然科学基金项目(41271096) |
| |
| 摘 要： | A comprehensive grasp of the research status of tensile strength of frozen soil is the basis for further research. Firstly，the typical methods that can be used to test the tensile strength of frozen soil are introduced，and the test conditions，sample forms and stress mechanism of different test methods are described in detail. The advantages and disadvantages of typical tensile strength test methods are compared and listed. Secondly，the research work and shortcomings based on different test methods are summarized. Then，the latest research progress of the influence of temperature，water content，loading（deformation）rate，soil quality and sample size on the change law of frozen soil tensile strength is comprehensively analyzed. Finally，it is proposed to develop and improve the research method and system of frozen soil tensile strength，and increase the testing research of warm frozen soil tensile strength，so as to obtain the prospect of more accurately simulating the tensile failure behavior of frozen soil. It is pointed out that the internal cause of the formation of the tensile strength and the tensile failure mechanism of frozen soil should be thoroughly revealed by combining the research methods of microstructure and digital image technology of frozen soil. Based on the multi-factor test，a more perfect prediction method of frozen soil tensile strength is explored. Meanwhile，expand the in-situ test research on the tensile strength of frozen soil，and strengthen the parallel research ideas of indoor and outdoor double tracks. Through the analysis of the research status and development trend at home and abroad，it provides reference and guidance for the experimental study of frozen soil tensile strength，the improvement of theoretical model of frost heave，geotechnical engineering design in cold regions and artificial freezing reinforcement engineering. © 2022 Science Press (China).
|
| 关 键 词： | 冻土 抗拉强度 直接拉伸 间接拉伸 力学特性 |
| 收稿时间： | 2022-03-21 |
| 修稿时间： | 2022-07-31 |
Research status and prospect of tensile strength of frozen soil |
| |
| Haihang WANG,Yang ZHOU,Xiaodong ZHAO,Jianzhou WANG,Guoqing ZHOU.Research status and prospect of tensile strength of frozen soil[J].Journal of Glaciology and Geocryology,2022,44(6):1807-1819. |
| |
| Authors: | Haihang WANG Yang ZHOU Xiaodong ZHAO Jianzhou WANG Guoqing ZHOU |
| |
| Institution: | 1.State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China;2.School of Mechanics and Civil Engineering，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China |
| |
| Abstract: | A comprehensive grasp of the research status of tensile strength of frozen soil is the basis for further research. Firstly， the typical methods that can be used to test the tensile strength of frozen soil are introduced， and the test conditions， sample forms and stress mechanism of different test methods are described in detail. The advantages and disadvantages of typical tensile strength test methods are compared and listed. Secondly， the research work and shortcomings based on different test methods are summarized. Then， the latest research progress of the influence of temperature， water content， loading （deformation） rate， soil quality and sample size on the change law of frozen soil tensile strength is comprehensively analyzed. Finally， it is proposed to develop and improve the research method and system of frozen soil tensile strength， and increase the testing research of warm frozen soil tensile strength， so as to obtain the prospect of more accurately simulating the tensile failure behavior of frozen soil. It is pointed out that the internal cause of the formation of the tensile strength and the tensile failure mechanism of frozen soil should be thoroughly revealed by combining the research methods of microstructure and digital image technology of frozen soil. Based on the multi-factor test， a more perfect prediction method of frozen soil tensile strength is explored. Meanwhile， expand the in-situ test research on the tensile strength of frozen soil， and strengthen the parallel research ideas of indoor and outdoor double tracks. Through the analysis of the research status and development trend at home and abroad， it provides reference and guidance for the experimental study of frozen soil tensile strength， the improvement of theoretical model of frost heave， geotechnical engineering design in cold regions and artificial freezing reinforcement engineering. |
| |
| Keywords: | frozen soil tensile strength direct tensile indirect tensile mechanical properties |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《冰川冻土》浏览原始摘要信息 |
| 点击此处可从《冰川冻土》下载免费的PDF全文 |
