A parametric study of wall deflections in deep excavations with the installation of cross walls |
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| Institution: | 1. Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei 10672, Taiwan;2. Department of Assets and Property Management, Hwa Hsia Institute of Technology, New Taipei City 23568, Taiwan;3. Hung Tung Construction Co., Ltd., Shin Long Group, Taipei 10668, Taiwan;1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;2. Key Laboratory of Coast Civil Structure Safety, Tianjin University, Ministry of Education, Tianjin 300072, China;3. School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China;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;1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China;3. School of Civil Engineering, Hefei University of Technology, Hefei 230009, China;1. Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China;2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;3. College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, China |
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| Abstract: | Several case studies have revealed that the installation of cross walls in excavations can effectively reduce the amount of wall deflection and ground settlement. However, the behaviour of the diaphragm wall due to the installation of the cross walls is still unclear. This study performed a series of 3D numerical studies of wall deflections for deep excavations with cross walls and studied the effects on the wall deflection of several parameters, including the number of cross walls, the distance to the cross wall, the cross wall interval, the cross wall height and the cross wall embedment. The results presented in this study can be used as a first approximation for cases in which cross walls are designed to reduce the wall deflection induced by deep excavation. |
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