热桩技术及其在解决多年冻土稳定问题中的应用

在多年冻土地带进行管道、铁路、公路等工程建设,必须解决冻土地基的稳定性问题。热桩可有效提高多年冻土地基的稳定性和承载力,防止地基发生冻胀和融沉变形。文章简述了热桩技术的原理,介绍了热桩技术在美国、加拿大、俄罗斯及我国青藏公路、铁路建设中的应用情况,并指出该技术应用的局限性。

Thermosiphon Pile Technology and Its Application in Solving Permafrost Stability Problem

Thermosiphon piles enable to increase the stability and bearing capacity of permafrost foundation and to prevent the foundation from frozen expansion and thaw settlement. This paper outlines technical principle of thermosiphon;introduces applications of this technology in America,Canada and Russia as well as in domestic Qing-Zang Highway,Qing-Zang Railroad construction. Furthermore,the technical limitation of this technology is pointed out in this paper.