Geological Suitability Evaluation for Urban Underground Transportation Space Utilisation in Soft Soil Area

Abstract

Geological suitability evaluation of urban traffic underground space utilisation is an important basic work in urban planning, especially for soft soil areas. In this study, firstly, on the basis of analyzing the influencing factors of urban underground transportation space utilisation in soft soil areas, and considering factors such as topography, geotechnical properties, hydrogeology, and existing constructions, an evaluation index system was constructed. The index weights are comprehensively determined according to expert scores and literature research. Then, the evaluation index is quantified by AHP (analytic hierarchy process) method and the suitability of the study area was calculated by multi-objective linear weighting method according to the established evaluation model. Finally, taking Wenyi Road in Hangzhou as an example, using the established evaluation index system and evaluation model to carry out the application research of geological suitability evaluation of underground space utilisation. The research results can provide technical reference for the utilisation of urban traffic underground space in soft soil areas.