Discussions on the Computation of Buoyancy for Underground Structure inside Soil
Main Article Content
Abstract
With the development of underground space and the scare of land resources, the problem of anti-floating for underground structure received more and more attention. The computation of buoyancy is the key during the design of anti-floating for underground structures. In this paper, a simplified model was established to demonstrate the transfer of water pressure transfer inside soil exists reduction in time scale and space scale, and the law of water pressure transfer and the relationship between water pressure transfer and buoyancy were presented. Ultimately, a formula was proposed to compute the safety factor of anti-floating of underground structures, which may provide a reference for anti-floating of underground structures.
Article Details
References
H. Kou, W. Guo, M. Zhang. Pullout performance of GFRP anti-floating anchor in weathered soil[J]. Tunnelling and Underground Space Technology, 2015, 49: 408-416.
Y. X.Wu, T. L. Yang, P. C. Li, et al. Investigation of Groundwater Withdrawal and Recharge Affecting Underground Structures in the Shanghai Urban Area[J]. Sustainability, 2019, 11(24): 7162.
H. E. Acosta-Martinez, S. Gourvenec, M. F. Randolph. Centrifuge study of capacity of a skirted foundation under eccentric transient and sustained uplift[J]. Géotechnique, 2012, 62(4): 317-328.
G. X. Li, J. M. Wu. computation of uplift pressure on underground construction and effective stress principle in clay[J]. Geotechnical Engineering Technique, 2003, 2: 63-66.
P. F. Zhou. Groundwater uplift mechanism under complex urban environment[D]. Beijing: China Geologic University, 2006.
D. X. Zhang. Experimental study on anti-floating of underground structures[D]. Shanghai: Shanghai Jiaotong University, 2007.
Y. S. Fang. Discussion on pore pressure and related problems considering hydraulic pressure ratio[J]. Geotechnical Engineering World, 2007, 10(5): 21-26.
B. Zhang, G. X. Li, J. F. Yang. The Design and Actualization for the Model Experiment on Underground Water Uplift Action Mechanism[J]. Geotechnical Engineering Technique, 2006, 20(3): 128-131.
Z. Fang , J. H. Yin. Responses of Excess Pore Water Pressure in Soft Marine Clay around a Soil–Cement Column. International Journal of Geomechanics [J], 2007, 7(3), 167-175.
L. Chen, M. C. Luo, K. L. Qin, et al.Study on Water Head Lag Effect of Unsteady Seepage in Dike Foundation [J]. Journal of Disaster Prevention and Mitigation Engineering, 2018, 38(06): 904-910.