MATEC Web Conf.
Volume 146, 20189th International Scientific Conference Building Defects (Building Defects 2017)
|Number of page(s)||6|
|Section||Mechanical and Materials Engineering|
|Published online||22 January 2018|
Deep excavation in urban areas – defects of surrounding buildings at various stages of construction
1 Wroclaw University of Science and Technology, Faculty of Civil Engineering, 50-370 Wrocław, Wyb Wyspianskiego 27, Poland
2 MISiS National University of Science and Technology, Department of Underground Construction, Leninsky Ave, 4, Moskva, Russia, 119049
3 Silesian University of Technology, Faculty of Civil Engineering, 44-100 Gliwice, Akademicka 2A, Poland
* Corresponding author: firstname.lastname@example.org
Deep excavation and tunnelling works in city centres always bring some risks to surrounding structures, especially in the case of old town centres, where the technical condition and structural stiffness of historical buildings is rather doubtful. When the new desired excavation depth goes deeper than the foundation of the surrounding buildings or when tunnelling works are conducted directly under them, the existing objects are subject to stress, vibrations and displacements imposed at almost every stage of building the new construction. The presented paper outlines, on the basis of the authors’ experience, the typical damages appearing during the supporting wall construction (sheet pile driving, piling and formation of diaphragm walls) and tunnelling works. Other damages appear due to soil mass unloading (caused by excavation stages) and horizontal loading during pre-stressing of struts or ground anchors. The selected case studies of steel sheet pile wall installation is given with regard to typical failures caused by an unplanned excavation and its impact on neighbouring structures.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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