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我国黄土隧道衬砌没有合理的设计理论,而是根据地质类比的方法,套用一般土质隧道的标准设计(相当于岩石f=20.6—2的情况),以普氏理论的垂直荷载为主进行设计。多采用直边墙马蹄形衬砌形式,厚度偏大,在使用过程中不断产生裂缝。另一方面我国黄土地域辽阔,面积达60万平方公里。黄土地区一般缺乏砂石材料,需要远途运输,价格昂贵,甚至与面粉相当。这也是混凝土工程中的一个大问题。因此,根据黄土地层的物理力学特征,进
In our country, there is no reasonable design theory for loess tunnel lining. Instead, the standard design of general soil tunnel (equivalent to the case of rock f = 20.6-2) is applied according to the method of geological analogy and the vertical load of Platts theory is taken as the main design. More use of straight-wall horseshoe-shaped lining form, the thickness is too large, continue to produce cracks in the course of use. On the other hand, China’s vast loess area covers an area of 600,000 square kilometers. Loess areas generally lack sand and gravel material, need to transport long distances, expensive, and even flour. This is also a big problem in concrete engineering. Therefore, according to the loess stratum physical and mechanical characteristics, into