摘要
冻结法施工在上海隧道建设中(如隧道旁通道、地下泵房等的设计与施工)得到广泛应用,也曾引发过严重的地质灾害(如上海地铁4号线外滩段的地质灾害)。因此安全、经济、合理地将冻结法用于上海软土地区隧道建设中已经成为上海工程建设中的一个重要的研究课题。本文以上海复兴东路越江隧道旁通道冻结法施工中遇到的第⑥层粉质粘土及第⑦层粉细砂为研究对象,针对设计冻结壁重要强度参数无侧限瞬时抗压强度,进行了室内试验研究,揭示了两种土的冻结强度随温度的变化关系,同时研究了粉细砂的冻结强度随含水率的变化规律。
With the development of underground structures in Shanghai, the ground freezing method is more and more widely used tunnel construction （such as the soil reinforcement of the nels）. Therefore, it becomes important to develop guidelines for appropriate passway and pumping house of tunapplications of such technology in Shanghai. This paper presents results of the instantaneous uniaxial compressive strength, which is one of the important parameters for design of the frozen wall. Lab tests were conducted grass - yellow mealy sand which were often encountered in the tunnel on sap green ～ grass - yellow silty clay and passway construction in Shanghai. The relationship between the compressive strength and temperature of two kinds of frozen soils were obtained. Effects of the temperature and water contents on the relationship were also evaluated.
出处
《工程地质学报》
CSCD
2006年第3期376-379,共4页
Journal of Engineering Geology
基金
国家自然科学基金(No.40372124)资助项目
上海市重点学科基金(批准号:沪教委科[2001]44号)资助项目
关键词
冻结法
冻结壁
无侧限瞬时抗压强度
温度
含水率
Freezing method, Instantaneous uniaxial compressive strength tests, Temperature, Water content
