Tunnels are one of the most important underground structures, which are built to facilitate passing through complex geological formation as well as topographical condition.
Design of tunnels is the art of employing engineering concepts and construction methodology. To provide a safe and feasible design, knowledge of geotechnical engineering, structural engineering and construction methodologies are required to be put together to produce a proper design. Ground behavior due to tunneling is non-linear and the procedure for designing a tunnel needs a number of complex calculations to evaluate effect of interaction between ground and support of excavation to reach to a safe and stable condition.
This process can be facilitated if computer methods are utilized. Since interaction between ground and tunnel support system, which is playing as a compensation in exchange with excavated soil, is a major matter of tunnel design, geotechnical software with the capability to model this interaction are an efficient tools in this regard. One of the most efficient way to accomplish designing a tunnel is to employ PLAXIS program, which is specifically developed to provide a hands-on tool for geotechnical engineers through tunnel analysis and design process.
The main aim of this course is to acquire geotechnical engineer skills within tunnel design process by using PLAXIS software and it mainly focuses on step by step building some practical example of tunnels, which are simulation of sequential construction in reality. During the course, several practical applications of PLAXIS in analysis and design of bored and mined tunnels are discussed and through which some concepts of soil mechanics concerning selection of geotechnical parameters and type of analysis are reviewed.