Seismic Effect Analysis of High-Filled Cuter Cover Tunnel Considering the Time-dependent Nature of Fill Soil

DOI

10.2991/978-94-6463-398-6_8How to use a DOI?

Keywords

High-Filled Cuter Cover Tunnel; equal reduction rate; earthquake; creep; factor of safety

Abstract

In order to investigate the seismic effect analysis of High-Filled Cuter Cover Tunnel based on equal load reduction rate and considering the timeliness of filling, three load-reducing materials, namely, EPS board, low-pressure solid soil and rubber granular improved soil, are selected, and the effects of the differences in load-reducing materials on the soil pressure around the caves and the safety of the lining are analyzed under the effect of earthquakes, using a combination of experiments and numerical simulations. The results show that: under seismic action, the average vertical dynamic soil pressure on the left side of the cave roof is 1.12~1.05~1.02 times of the static loaded soil pressure, and the dynamic soil pressure on the right side is 1.02~1.01~1 times of that on the left side; the horizontal dynamic soil pressure on the left and right sides of the cave shows a trend of “this is the opposite of the other”, and the average horizontal dynamic soil pressure on the left side of the cave is 0.5~2 times of that on the right side. The average horizontal dynamic soil pressure on the left side (right side) of the hole is 0.63~0.88~1.03 times (1.95~1.32~1.08 times) of the static load soil pressure. The distribution of structural safety coefficient tends to be symmetrical from asymmetric in order, and the smallest part of the safety coefficient is transferred from the arch top to the right side wall. When seismic design is carried out in High-Filled Cuter Cover Tunnel, attention should be paid to the safety performance of the lining structure arch top and right side wall.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xuhong Shi
AU  - Sheng Li
AU  - Li Ma
AU  - Jiangong Zhang
AU  - Lei Cai
AU  - Xuefeng Ban
PY  - 2024
DA  - 2024/04/24
TI  - Seismic Effect Analysis of High-Filled Cuter Cover Tunnel Considering the Time-dependent Nature of Fill Soil
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 63
EP  - 79
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_8
DO  - 10.2991/978-94-6463-398-6_8
ID  - Shi2024
ER  -