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总览 评价 马悦 1, , 朱志武 2,3,* ( 1、 西南交通大学力学与工程学院,成都 610031; 2、 西南交通大学力学与工程学院,四川 成都,610031; 3、 中科院寒旱所冻土工程国家重点实验室,甘肃 兰州,730000; ) 摘要: 冻土广泛分布在我国寒区,冻土的
马悦1,, 朱志武2,3,*
(
1、西南交通大学力学与工程学院,成都 610031; 2、西南交通大学力学与工程学院,四川 成都,610031; 3、中科院寒旱所冻土工程国家重点实验室,甘肃 兰州,730000; )
摘要:
冻土广泛分布在我国寒区,冻土的力学性质直接影响着寒区工程的设计、施工及维护。通过总结冻土研究相关文献和试验进展,介绍了动态实验,特别是霍普金森压杆(SHPB)实验在冻土研究中的应用,对冻土数值分析研究成果进行了概括。随着对永久冻土区域的开发,工程进展中也衍生出各种问题,所以深入了解冻土的动态力学行为和建立成熟的动态本构关系变得日益重要。在冻土领域开展的大量研究表明,冻土动态力学性质复杂,受到多种条件的交互作用和制约,寒区大量的工程实践仍需更加完备的理论指导,仍然需要大量的科研投入,在未来的一段时间里也将会是一个亟待解决的科学难题。
关键词:
固体力学;冻土;实验;SHPB;动态;数值模拟
MA Yue1,, ZHU Zhiwu2,*
(
1、Southwest Jiaotong Univ., School of Mechanics and Eng., ChengDu 610031; 2、 Southwest Jiaotong Univ., School of Mechanics and Eng., Chengdu 610031; )
Abstract:
Frozen soils are widely naturalized in cold regions. The mechanical properties of frozen soils have direct influence on engineering projects. This paper summarized the study and related articles about frozen soils, containing laboratory dynamic experimental results, especially the SHPB experiments on frozen soils, and numerical simulation developments. Along With Develop Thorough on permafrost, difficulties come out with the evolution of engineering practice. For an in-depth look at the mechanical properties of frozen soils and establishing the constitutive equations, researching have made on frozen soils. On account of the physical and mechanical characteristics of frozen soils have great complexity and the factors concerned are various, there are none complete theoretical system to guide practice. Since financial element and increasing research investment are demanded in the fields.
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