青藏高原多年冻土冻结强度的影响因素

对青藏高原风火山现场及室内冻胀试验进行分析的基础上,对影响青藏高原多年冻土冻结强度的土温、含水率、土质、基础桩材料等因素进行了分析,得出：土温高于-7℃范围内与负温近似成线形关系,冻结强度随含水率的增加而增大,粗颗粒土冻结强度大于细颗粒土,建筑材料越粗糙,冻结强度越大.

Factors affecting intension of the aged frozen earth in the Qinghai-Xizang plateau

With the investigation and research based on the freezing-expanding experiments in the Feng Huo Mountain of the Xizang plateau and the laboratory.We analyze those factors,including temperature,volumn of contained water,properties of the earth,material of the base stakes,which affect freezing intension of aged frozen ground in the Xizang plateau and draw the following conclusions:Freezing intension is linear with negative temperature when it's greater than-7 celsius;Freezing intension depends on the volumn of contained water.More water,more intensive;Freezing intension depends on the granularity of the frozen earth.More hackly,more intensive;Freezing intension depends on the roughness of the surface material of the base stake.More rough,more intensive.