学生工作

学术风采

当前位置: 网站首页 > 学生工作 > 学术风采 > 正文

【研学微展06】冯东--主应力轴旋转应力路径下K0固结软黏土的各向异性与非共轴性

作者: 来源: 发布时间:2020-01-30本文已被浏览

个人简介

姓名:冯东

学院:建筑工程学院

指导老师:王军教授

研究方向:土动力学与地基处理

博士考取学校:东南大学

科研感言:崇尚学术,坚持终身学习。

 

获奖情况:

[1]在土木工程专业领域知名国际期刊《Journal of Geotechnical and Geoenvironmental Engineering, ASCE》上发表的论文被评选为高阅读量论文,并受邀担任《ASCE-JGGE》、《Marine Georesources & Geotechnology》国际期刊的同行评审人;

[2]多次组织和参与国际及全国性学术会议, 并在2018年全国土动力学大会与2019年全国土力学数值计算与解析方法研讨会上做学术报告2次;

[3]荣获研究生国家奖学金,中华人民共和国教育部,2018-2019年度;

[4]荣获研究生综合学业奖学金一等奖,温州大学,2018-2019学年;

[5]荣获2020年“优秀毕业生”称号;

[6]荣获最高科研奖,浙江省软弱土地基与海涂围垦重点实验室,2019.01;

[7]荣获中共党员发展对象培训班“优秀学员”称号,中共温州大学委员会校研究生分党校,2017.11。

 

论文:

Anisotropic and Noncoaxial Behavior of K0-Consolidated Soft Clays under Stress Paths with Principal Stress Rotation(主应力轴旋转应力路径下K0固结软黏土的各向异性与非共轴性)

发表期刊:

Journal of Geotechnical and Geoenvironmental Engineering, ASCE

 

● 论文摘要

   During embankment construction, the deformation behavior of soil will vary with increasing fill height because the principal stresses applied on soil elements in K0-consolidated subsoil will rotate. In this study, a series of tests is conducted on natural K0-consolidated Wenzhou soft clay in a hollow cylinder apparatus (HCA) to clarify the response of soils during principal stress rotation. Specimens are sheared with different angles of inclination (β) with respect to the vertical direction in undrained conditions. The stress-strain relationship, pore-water pressure evolution, shear strength, and noncoaxiality are discussed. The test results show that the development of strain components (vertical, radial, circumferential, and shear strains) is clearly distinct during orientational shearing. The coupling action of the axial and shear stresses results in different evolution processes of the excess pore-water pressure in tests with different β values. Under a critical state, the elliptical and asymmetric effective stress strength envelope conclusively shows a strong undrained strength anisotropy. In addition, the different noncoaxial angles between the major principal strain increment direction and corresponding major principal stress direction at failure is revealed, and the noncoaxial behavior is dependent on the β value.

 

科研成果展示

研究成果:

[1]Wang Jun, Feng Dong, Guo Lin et al., 2019, Anisotropic and Noncoaxial Behavior of K0-Consolidated Soft Clays under Stress Paths with Principal Stress Rotation: Journal of Geotechnical and Geoenvironmental Engineering, ASCE, v. 145, no. 9

[2]Feiyu Liu, Kai Zhu, Xiuqing Hu, Hongtao Fu, Dong Feng, 2019, “Experimental simple shear study of composite soil with cemented soil core”, Marine Georesources & Geotechnology, v. 37, no. 960-971

[3]欠固结重塑软黏土制样装置,专利号CN201711233000.6(已通过实审)

[4]空心圆柱软黏土试样切割仪,专利号CN201810214012.2(已通过实审)

 

主持与参与的科研项目:

[1]主持温州大学创新基金项目:定向剪切荷载作用下欠固结饱和软土的理论分析与试验研究,2017.09~2019.06,已结题;

[2]主持浙江省教育厅一般项目:高铁路基下软土受主应力轴旋转及循环变荷载作用响应研究,2018.12~2019.12,已结题;

[3]参与国家自然科学基金面上项目:多维度复杂应力路径下欠固结软土路基长期累积沉降与控制研究,2020.01.01~2023.12.31,在研;

[4]参与浙江省大学生科技创新活动计划(新苗人才计划)项目:高铁路基下欠固结软土受主应力轴旋转及循环变荷载作用响应研究,2019.03.01~2020.12.31,在研;

[5]参与浙江省大学生科技创新活动计划(新苗人才计划)项目:絮凝联合正空预压处理吹填土物理性质及固结特性研究,2018.03.01~2019.12.31,已结题;

[6]参与浙江省教育厅一般项目:饱和欠固结软土在循环荷载作用下的动力特性研究,2019.01.01~2020.01.01,在研.