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ENGINEERING JOURNAL CHIANG MAI UNIVERSITY


Volume 27, No. 02, Month AUGUST, Year 2020, Pages 28 - 38


Numerical investigation of responses of tunnel segmental lining due to adjacent loaded pile

Somchai Jirawattanakran, Kisada Trakoonjannak and Pornkasem Jongpradist


Abstract Download PDF

This present study analyses the impacts of pile under loading on the responses of existing tunnel segmental lining. The main focus is the comparison between modelling the tunnel as continuous and segmental linings. Key influencing parameters, particularly the relative position of key segment with respect to the pile tip, are also investigated. The results show that the responses of the segmental and continuous linings are different. The deformation of tunnel segmental lining is greater than that of the tunnel continuous lining, both after tunneling step and loaded pile step. By contrast, the structural forces of tunnel segmental lining are smaller than those of the tunnel continuous lining. The effects of segments and joints can be clearly seen. The joints result to the higher flexibility of the tunnel lining. Moreover, the positions of key segment of tunnel lining plays an important role on the overall and localized tunnel deformations as well as the distribution of structural forces.


Keywords

Segmental lining, pile, tunnel, impact



ENGINEERING JOURNAL CHIANG MAI UNIVERSITY


Published by : Faculty of Engineering Chiang Mai University
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