This paper presents a state of the art of urban tunnel design using a tunnel boring machine with earth pressure balance focusing on the major issues concerning this subject. Analytical and numerical methods used to compute surface settlements, face-support pressures and lining loads are summarized. Parametric studies were conducted to define the influence of soil properties on the lining loads design. Appropriate observations about numerical design were done. Specific features regarding urban environment, ground conditions and TBM technology are summarized and appraised, such as overburden, behavior of structures due to tunnel induced subsidence, groundwater, soil properties and grouting stabilization. Relevant conclusions regarding planning, design and construction of tunnelling are pointed out.
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