DISCUSSION ON THE FURTHER RESEARCH IN LOESS HYDROCOMPACTION
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摘要:
黄土湿陷性问题由来已久。20世纪60-80年代, 采用扫描电镜(SEM)和物化分析技术, 黄土湿陷机理的结构理论获得了发展和完善, 当时, 由于不能提供定量的力学参数而很少应用于工程建设。随着土工试验技术的进步以及土力学理论的发展, 克服传统的黄土湿陷机理研究方法的不足成为可能。本文首先论述了黄土湿陷性研究的力学属性; 其次, 提出了黄土的广义湿陷概念; 最后, 从非饱和土力学角度对黄土湿陷机理研究的有关问题进行了讨论和分析。
Abstract:Loess hydrocompaction has been discussed for a long time.During the 1960s ~ 1980s, with the application of SEM and mineral analysis, the micro-structure theory of loess hydrocompaction was developed and improved, but it has rarely been used in engineering numerical analysis because it failed to supply related force stress parameters.Progress in soil engineering and soil mechanics makes it possible to find a new way to study the loess hydrocompaction.This paper discusses mechanical attribute of loess hydrocompaction and proposes a concept of generalized loess hydrocompaction.An analysis is made on some issues about study on hydrocompaction from the viewpoint of unsaturated soil mechanics, and finally a case study is given.
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