Mechanical Analysis of Bolt-Lining Combined Support in Deeply Buried Circular Tunnel

نویسندگان

چکیده

The proposal of the NATM has changed people’s understanding support principle. Therefore, how to improve self-supporting capacity surrounding rock become an important issue in research. Bolts and lining are widely used together various projects because their bearing reinforcement effects line with concept NATM. This paper puts forward a model analyze mechanical behavior deeply buried circular tunnel jointly supported by point-anchored bolts. Rock mass, lining, bolts maintain elastic state full contact each other. In addition, replaced pairs concentrated forces equal magnitude that act opposite directions. By using complex function method, linear equations for calculating axial force relevant analytical coefficients can be established, based on stress condition inner boundary continuity conditions at interface between rock, compatibility displacement rock. Then, functions, any point calculated. results were compared numerical solutions. Moreover, Young’s modulus whole system discussed.

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ژورنال

عنوان ژورنال: Applied sciences

سال: 2022

ISSN: ['2076-3417']

DOI: https://doi.org/10.3390/app12189112