Numerical analysis of deep excavations and prediction of their influence on neighboring buildings

摘要

Designing deep excavations in densely built areas implies complex aspects when estimating the effects induced on the existing built environment. Numerical methods used nowadays can account for both strength and deformability parameters of soils, helping the engineer in assessing not only difficult geometries and the sequence of construction stages, but also complex soil behavior through advanced constitutive models. Thus, both the retaining wall deformations and excavation-induced ground movements can accurately be predicted. The paper focuses on presenting the application of the above stated issues on a practical case study by using the finite element method. In principle, this is related to the assimilation of appropriate calculation technique and constitutive soil models together with their associated geotechnical parameters. The case study is represented by a deep excavation constructed in Vienna, for which the results are validated by comparison to the measurements of real soil behavior.