Secondary Development of Marc Software Based on Shield Tunnel Load Structure Method and its Verification

Load structure method is commonly used in tunnel design; there are two problems for its implementation in Marc software: first, the force cannot be applied directly in Marc; second, the position of the spring around the tunnel is unknown. In view of first problem, by means of force conversion, a sub...

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Bibliographic Details
Published inApplied Mechanics and Materials Vol. 94-96; pp. 2149 - 2152
Main Authors Li, Yong Song, Li, Ning, Xu, Jian Cong
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.09.2011
Subjects
Marc Software
Shield Tunnel
Secondary Development
Load Structure Method
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Summary:Load structure method is commonly used in tunnel design; there are two problems for its implementation in Marc software: first, the force cannot be applied directly in Marc; second, the position of the spring around the tunnel is unknown. In view of first problem, by means of force conversion, a subroutine programming with Fortran is adopted to exert the force. For the second problem, iterative algorithm is adopted; the tension spring will exit calculation, and a comparison of the spring position in the two steps will be made, if the position is the same, the computation will finish. The work above realizes the Load structure method in Marc software and enlarges the application of Marc software in underground engineering. The verification example is given to prove the validity of the interface subroutine.
Bibliography:Selected, peer reviewed papers from the 2011 International Conference on Civil Engineering and Transportation, (ICCET 2011), 14-16 October, 2011, Jinan, China
ISBN:9783037852439
3037852437
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.94-96.2149