A simple prediction model for wall deflection caused by braced excavation in clays |
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| Institution: | 1. Department of Civil Engineering, Mohamed Khider University, LMN2I2S Lab, Biskra 07000, Algeria;2. Grenoble-INP, UJF-Grenoble 1, CNRS UMR 5521, 3SR Lab, Grenoble F-38041, France;1. Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, China;2. UMacau Research Institute, Zhuhai, Guangdong, China;1. Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand;2. Geotechnical Research Unit, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand;1. Depart. of Civil Engineering, University of Ottawa, 161 Louis-Pasteur Private, Ottawa K1N 6N5, Canada;2. Dept. of Geotechnical Engineering, Tongji Univ., 1239 Siping Rd., Shanghai 200092, PR China;3. Zhejiang Provincial Institute Communications Planning, Design & Research, Hangzhou 310006, PR China |
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| Abstract: | Deep excavations particularly in deep deposits of soft clay can cause excessive ground movements and result in damage to adjacent buildings. Extensive plane strain finite element analyses considering the small strain effect have been carried out to examine the wall deflections for excavations in soft clay deposits supported by retaining walls and bracing. The excavation geometry, soil strength and stiffness properties, and the wall stiffness were varied to study the wall deflection behavior. Based on these results, a simple Polynomial Regression (PR) model was developed for estimating the maximum wall deflection. Wall deflections computed by this method compare favorably with a number of field and published records. |
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| Keywords: | Wall deflection Braced excavation Polynomial Regression Case histories Clays Finite element analysis |
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