Abstract
Due to rapid urbanization and infrastructure development, the land resources available for construction are becoming increasingly scarce in built-up environments, especially for cities and districts in mountainous terrain. For deep excavations developed for basements of high-rise buildings in these areas, the excavation activities may influence the stability or performance of existing nearby upper slopes. Based on a synthetic case study in Chongqing, this study numerically investigates the effects of the excavation geometry, the retaining wall system stiffness and the distance between the excavation and slope on excavation responses including the global factor of safety and retaining wall deflection of the excavation-slope system. Subsequently, simplified ultimate and serviceability limit state (SLS) response surface models have been developed and implemented into the first-order reliability method (FORM) to determine the probability that the ultimate or SLS is exceeded.
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