ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2016, Vol. 36 ›› Issue (6): 756-761.DOI: 10.3973/j.issn.1672-741X.2016.06.016
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GAO Hongtao
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Abstract:
The treating scheme of collapse of surrounding rock of Grade Ⅳ of a large crosssection railway tunnel is described. The distance between collapse cavity and the tunnel is predicted and detected according to collapse volume; and the vertical stress on the primary support structure of the tunnel induced by rock and soil is calculated. The bearing internal force of the primary support structure of the tunnel is simulated by means of ANSYS software and loadstructure model; and the safety evaluation of the primary support structure of the tunnel is made according to Code for Design of Railway Tunnel. Finally, rational primary support structure is adopted and safe construction technologies for collapse section are provided.
Key words: large crosssection railway tunnel, collapse treatment, grouting, numerical simulation, CRD method
CLC Number:
U 455
GAO Hongtao. Safety Evaluation of Primary Support Structure during Collapse Treating of Large Crosssection Railway Tunnel[J]. Tunnel Construction, 2016, 36(6): 756-761.
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http://www.suidaojs.com/EN/Y2016/V36/I6/756
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