Shape and Reinforcement Optimization of Underground Tunnels

Journal of Computational Science and Technology

Kazem GHABRAIE²  Xiaodong HUANG¹  Yi Min XIE¹  Gang REN¹ 

[1] School of Civil, Environmental and Chemical Engineering, RMIT University;Faculty of Engineering and Surveying, University of Southern Queensland

关键词: Underground Excavation;    Tunnel Reinforcement;    Topology Optimization;    Shape Optimization;    Finite Element Analysis;   

DOI  :  10.1299/jcst.4.51

学科分类：地球科学(综合)

来源: Japan Academy

【 摘 要 】

References(24)Cited-By(7)Design of support system and selecting an optimum shape for the opening are two important steps in designing excavations in rock masses. Currently selecting the shape and support design are mainly based on designer's judgment and experience. Both of these problems can be viewed as material distribution problems where one needs to find the optimum distribution of a material in a domain. Topology optimization techniques have proved to be useful in solving these kinds of problems in structural design. Recently the application of topology optimization techniques in reinforcement design around underground excavations has been studied by some researchers. In this paper a three-phase material model will be introduced changing between normal rock, reinforced rock, and void. Using such a material model both problems of shape and reinforcement design can be solved together. A well-known topology optimization technique used in structural design is bi-directional evolutionary structural optimization (BESO). In this paper the BESO technique has been extended to simultaneously optimize the shape of the opening and the distribution of reinforcements. Validity and capability of the proposed approach have been investigated through some examples.

【 授权许可】

Unknown