Abstract
In order to improve the active node structure in steel tube bracing system, an innovative Bolt Fasten Wedge (BFW) active node is proposed in this study. Firstly, the BFW active node was researched on its working principle, function and structure by theoretical derivation and numerical simulation. Then, the elastic and ultimate bearing capacity of the BFW active node were obtained by laboratory loading tests. Finally, the bearing capacity and stiffness of the BFW active node were compared with those of many different types of commonly used steel tube bracings and the applicability of the BFW active node was evaluated. The results show that the BFW active node has good bearing capacity and strong stiffness. In conclusion, the BFW active node is of simple structure, reasonable stress, large bearing capacity and strong stiffness which meet the requirements of deformation and stability for braced excavations.
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Zhang, M., Yang, M., Li, P., Lu, D. (2018). An Innovative Bolt Fastener for Steel Tube Bracing in Deep Excavations. In: Wu, W., Yu, HS. (eds) Proceedings of China-Europe Conference on Geotechnical Engineering. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-97115-5_46
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DOI: https://doi.org/10.1007/978-3-319-97115-5_46
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