论文部分内容阅读
岩体作为一般建筑物地基时,大都是坚硬而刚性、并具足够的承载力和抗变形能力。但是作为高层建筑物的地基时,常会引起岩体承载力以及由于岩体的某种缺陷而造成的地基变形问题。1977年Sowers报导过,在风化而多孔灰岩地基上施加1吨/米~2荷载时,受荷面积下的沉陷量可达12厘米以上。因此,在目前全国各大、中城市大量兴建高层建筑群的情况下,进行岩体地基力学性状的研究和相应勘探原则探索具有现实意义。一、基础荷载作用在岩体地基中的附加应力在基础荷载作用下,岩体地基中每一点将要改变它的初始应力条件,即会产生由于基础荷载而诱生的附加应力,现以极座标给
As a general building foundation, rock masses are mostly rigid and rigid, and have sufficient bearing capacity and deformation resistance. However, as the foundation of a high-rise building, it often causes the bearing capacity of the rock mass and the deformation of the foundation due to a certain defect of the rock mass. In 1977, Sowers reported that when a load of 1 ton/m~2 was applied on a weathered porous limestone foundation, the amount of subsidence under the affected area could reach 12 cm or more. Therefore, under the condition that a large number of high-rise buildings are being constructed in large and medium-sized cities throughout the country, it is of practical significance to carry out research on the mechanical properties of rock foundations and explore the corresponding exploration principles. First, the additional stress of the foundation load acting on the rock foundation Under the action of the foundation load, each point of the rock foundation will change its initial stress condition, ie, additional stress induced by the foundation load will be generated. Labeling