Advances in Deformation Control Technologies for Deep Excavations in Congested Urban Areas: 2nd Edition

Dear Colleagues,

Deep excavations in congested urban areas in developing countries, which are carried out for various reasons, such as the construction of basements, parking garages, utilities, metro stations, and transportation tunnels, are becoming increasingly popular. Generally, in such urban areas, preexisting buildings and underground structures or utilities (e.g., piles, pipelines, and tunnels) are abundant, and they are susceptible to ground deformations induced by deep excavations adjacent to them. For the sake of the safety of the adjacent buildings and structures, as well as the stability of the excavation’s supporting system, it is vital to control the deformation of deep excavations in congested urban areas to achieve the best or most acceptable level of engineering cost. As for the technologies which control the deformation of deep excavations in these areas, long term-related research and engineering practice has accumulated much experience and effective technologies, especially for deformation control standard at the centimeter-level; however, when dealing with engineering cases involving the millimeter-level deformation control standard, challenges still remain.

The objective of this Special Issue is to collect new advances in deformation control technologies for deep excavations in congested urban areas and their many applications. Both original research and review articles are welcome. Potential topics include but are not limited to the following:

• Mechanisms of deformations induced by the different construction phases of deep excavations;
• Optimization and improvement of passive-type deformation control methods;
• Analytical methods for predicting deformations induced by deep excavations;
• Disposal measures for existing deformations;
• Active-type deformation control methods;
• The numerical modelling of three-dimensional behaviors of deep excavation;
• The protection of adjacent buildings;
• The performance of shelter piles or walls for reducing the adverse effects of excavation deformation;
• The behavior or response of underground structures subject to excavation-induced ground deformations;
• Case studies of deep excavations in congested urban areas.

Prof. Dr. Yixian Wang
Prof. Dr. Hang Lin
Prof. Dr. Yanlin Zhao
Dr. Panpan Guo
Guest Editors

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• deep excavation
• deformation control
• urban area
• soil–structure interaction
• soils
• geotechnical engineering