Abstract
The paper discusses the influence of a group of high-rise buildings on land subsidence, based on a modeling exercise. The model consisted of five layers of soils typical of the Shanghai area, with the buildings placed on piles set in the upper silty sand horizon. It was loaded to represent the construction sequence of the four buildings. The main settlement was observed to be in the underlying clayey layer. The model demonstrated the increase in pore water pressure with staged loading, its effect on deformation and the increase in effective stress over time. It indicated the largest amount of settlement over time occurs between the buildings.
Résumé
L’article discute de l’influence d’un groupe de quatre bâtiments de grande hauteur sur le tassement des sols, sur la base d’une modélisation. Le modèle comportait cinq couches de sols typiques de la région de Shanghai, les bâtiments étant fondés sur pieux sur la couche silto-sableuse supérieure. Un chargement mécanique a représenté la séquence de construction des bâtiments. Le tassement principal s’est réalisé dans la couche argileuse sous-jacente. Le modèle a montré l’augmentation de la pression interstitielle, fonction du niveau de chargement mécanique, l’augmentation des contraintes effectives avec le temps et la déformation des terrains. Le modèle a montré que, dans le cas étudié, l’amplitude maximum de tassement se réalisait entre les bâtiments.
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Acknowledgments
This work is supported by the research grant (40372124) from National Natural Science Foundation of China and Shanghai Key Subject (Geotechnical Engineering) Foundation.
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Tang, YQ., Cui, ZD., Wang, JX. et al. Model test study of land subsidence caused by high-rise building group in Shanghai. Bull Eng Geol Environ 67, 173–179 (2008). https://doi.org/10.1007/s10064-008-0121-x
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DOI: https://doi.org/10.1007/s10064-008-0121-x