Coupled beam-boundary-element model (BE-BEM) for analysis of underground openings |
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| Institution: | 1. State Key Laboratory of Geodesy and Earth''s Dynamics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, No. 340 Xudong Road, Wuhan 430077, China;2. National Geodetic Observatory. Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, No. 340 Xudong Road, Wuhan 430077, China;3. University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China;4. School of Computer and Information Engineering, Xiamen Institute of Technology, No. 600 Ligong Road, Jimei District, Xiamen 361024, China;3. Joint Mass Spectrometry Facility, Research School of Chemistry, Australian National University, 2601, Canberra, ACT, Australia;4. Institute of Plant Sciences of Saclay, INRA, University Paris-Sud, CNRS, Université Paris-Saclay, 91190, Gif-sur-Yvette, France;5. Plateforme d''Analyse de Protéomique Paris Sud-Ouest (PAPPSO), GQE Le Moulon, INRA, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, Ferme du Moulon, 91190, Gif-sur-Yvette, France;1. Univ. Lille, EA 7367 – UTML – Unité de Taphonomie Médico-Légale, F-59000 Lille, France;2. CHU Lille, Service de Médecine Légale, F-59000, France;3. Univ. Lille, CHU Lille, EA 2694 – Santé publique: épidémiologie et qualité des soins, F-59000 Lille, France;4. CHU Lille, Service d’orthopédie, F-59000 Lille, France |
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| Abstract: | The coupled beam-boundary-element (BE-BEM) model 1,2] is an efficient computation model to determine the support behavior of the rock mass and the support measures in a realistic way without requiring excessive computation time. In order to avoid time-consuming FE-computations the “coefficient of subgrade reaction method” (CSRM) was often applied for stability analyses in tunneling especially in Germany 3]. The difficulties in using the CSRM are well-known, a fact which often gave rise to discussions about the input data and the computation results obtained. In this paper the results of a BE-BEM computation will be compared with the approximate solution obtained by the CSRM. It will be shown that the time-intesive FE-BEM model 4,5] can be replaced by the BE-BEM model as far as the support behavior of the rock mass is predominately elastic. |
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