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Study on Redundancy of Foundation Excavation Convex Location Supported by Soil Nailing
Author(s): Wang Haixu, Cheng Xuesong, Zheng Gang
Pages: 37-
42
Year: 2011
Issue:
24
Journal: Construction Technology
Abstract: 基坑阳角是变形控制的不利位置,在设计中应予以重点加固.在基坑工程领域引入冗余度设计理论的概念,对土钉支护基坑的阳角进行腰梁加固,并对其冗余度进行分析.对比分析了原体系与冗余体系的坑壁水平位移、土钉轴力等内容;研究了局部土钉失效时,土钉-腰梁支护体系的工作状况.结果证明对土钉支护基坑的阳角进行腰梁加固能够有效控制危险位置位移,转移冗余荷载,增加荷载传递路径,即能够提高支护体系冗余度.
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