A Review on Physical Modeling in Geomechanics
Physical modeling has played an important role in studies related to complex tunnel geometries. This method is still used despite the high investment costs for experimental facilities and in the contrary, declining numerical modeling costs. Because of limitations in numerical models for correct implementation of soil and rock behavior (e.g. non linear response, strength anisotropy, accumulation of damage within cemented materials etc.) physical models still can be used to calibrate numerical models. A variety of modeling techniques have been developed by researchers to study ground response due to in-situ stress field. These techniques range from simple two-dimensional models to miniature tunnel boring machines that simulate the process of tunnel excavation and lining installation in a centrifuge setup. Physical modeling utilizes similarity theory and dimensional analysis. The rules of these theories dictate material and model properties, the manner of applying forces and field stresses, method of model construction, boundary conditions, monitoring and so on. In this paper, methods of making various physical models and their conditions together with the parameters that need to be determined accurately are discussed. Also, a circular tunnel is modeled and tested in the laboratory the results of which is presented and discussed.
M.Moosavi A.Karimi M.Yoosefi
The University of Tehran, Iran
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）