Unified model for internal force and deformation of shield segment joints and experimental analysis
ZHU He-hua1, HUANG Bo-qi1, LI Xiao-jun1, HASHIMOTO Tadashi2
1. State Key Laboratory for Disaster Reduction in Civil Engineering and Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China; 2. Geo-research Institute of Osaka, Osaka, Japan
Abstract:First, based on a series of tests on reinforced concrete segment joints, the rotational moment-angle models for segment joints including linear, bilinear and nonlinear models and the axial force-deformation and shear force-deformation piecewise models are summarized and proposed, and the theoretical models are also given to describe the effect of the initial torque of bolts and axial force on joint stiffness. Second, based on the bending tests on flat plate segments and arch segments with or without sealing materials, the parameter determination methods for various stiffness models and the model selection principles are proposed, and the effect of the initial torque of bolts and axial force on joint stiffness is discussed. Based on the shear tests on flat plate segment joints with or without sealing materials, the parameter determination method for three-stage shear force resistance stiffness model is proposed. The results have proved the applicability of these joint stiffness models and will promote the application of beam-joint model theory in design practice.
朱合华, 黄伯麒, 李晓军, 桥本正. 盾构衬砌管片接头内力-变形统一模型及试验分析[J]. 岩土工程学报, 2014, 36(12): 2153-2160.
ZHU He-hua, HUANG Bo-qi, LI Xiao-jun, HASHIMOTO Tadashi. Unified model for internal force and deformation of shield segment joints and experimental analysis. Chinese J. Geot. Eng., 2014, 36(12): 2153-2160.
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