南京软土地区隧道盾构法施工引起的横向地表变形计算方法

Calculation method of ground settlement along the tunnel transversal section caused by shield construction in soft ground

在我国城市隧道施工引起的地面变形的研究中,随机介质理论法和Peck法是2种应用较广的方法.但是目前对这2种方法各自的应用条件、二者的理论联系、计算结果的关系、相应的关键参数的取值方法的研究很不成熟.根据南京地铁实测资料进行反算,得出南京软土地区,Peck法和随机介质理论法的关键参数取值范围,具有一定的实际意义.

Stochastic Medium Method（SMM） and Peck Method are widely used in the field of ground movement caused by urban soft ground tunneling in China. However, little is known their relation between theoretical background, the application conditions, and evaluation of the results from these two methods and to determination of the key parameters. Based on the reverse calculation from the measured data of ground settlement due to the shield driving in the construction of Nanjing Metro, a method was proposed for determination of the range of the key parameters for both Stochastic Medium Method（SMM） and Peck Method.