The settlement characteristic of underground urban complex in Shanghai |
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Authors: | Jian Jia Jian-hua Wang Xiao-ming Lou Xiao-lin Xie Chuan-ping Liu |
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Institution: | (1) Institute of Architectural Design & Research, Tongji University, Shanghai, 200092, China;(2) Department of Civil Engineering, Shanghai Jiaotong University, Shanghai, 200240, China |
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Abstract: | The effects of excavation unloading, construction reloading and underground water on basal heave of excavation projects were
presented and analyzed based on the measurement results of an underground urban complex which was located in Shanghai. The
effects on water pressure and building settlements were analyzed as well. The numerical analyses by finite element method
(FEM) were conducted. It showed that the soil under the excavation base continued to heave during the following certain construction
stage. It also found that the bearing capacity of uplift piles which supported the buildings affected the structure quality
significantly. The conclusions can be applied in future projects.
Foundation item: the National Natural Science Foundation of China (No. 50679041) |
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Keywords: | underground urban complex excavation settlement characteristic basal heave |
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