不同围护结构变形模式对坑外深层土体位移场影响的对比分析_郑刚.pdfVIP

DOI 10.11779/CJGE201402002 4 TU470 A 2014 (1967 ) E-mail: zhenggang1967@163.com Comparative analysis of influences of different deformation modes of retaining structures on displacement field of deep soils outside excavations ZHENG Gang1, 2, DENG Xu1, 2, LIU Chang1, 2, LIU Qing-chen1, 2 (1. Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China) Abstract: The horizontal displacements of the retaining piles are monitored through the whole process of a deep excavation project. It is found that, due to the differences of horizontal bracing stiffness, the deformation modes of the retaining piles at different locations are different, and the maximum horizontal displacements also have significant differences. Through FEM modeling, the characteristics of the displacement fields caused by four deformation modes of retaining walls are analyzed. The results show that under the situations of different deformation modes of retaining structures with the same maximum horizontal displacement, the displacement fields of soils outside the