The Adaptability to Fault Slip and Seismic Behavior of Exposed Steel Penstock Crossing Active Fault

DOI

10.2991/978-94-6463-398-6_68How to use a DOI?

Keywords

component; inverted siphon exposed penstock; fault slip; seismic behavior; bellow-type expansion joint; sliding support; hinge support

Abstract

By an exposed steel penstock crossing an active fault in high earthquake-intensity areas, the adaptability to fault slip and seismic behavior of the penstock is analyzed by the finite element method in this paper. The results show that it is effective to set several bellow-type expansion joints and arrange sliding and hinge supports at intervals for penstocks crossing active faults to adapt to fault slip. Most of the mass is concentrated on penstock, and each penstock section has a larger stiffness when there are bellow-type expansion joints at the two ends of the penstock section, so the penstock moved nearly rigidly under an earthquake and the stress is caused by internal water pressure mainly. However, as a result of the expansion joints, the axial displacement of the penstock is large and the supporting rings of hinge support bend seriously. Thus it is supposed to avoid excessive expansion joints to improve the axial seismic capacity. In addition, the sliding supports can work as base isolation supports, and excessive horizontal displacement can be restricted by hinge supports, and therefore it is of advantage not only to adaptability to inhomogeneous ground displacement but also to structural seismic behavior to arrange sliding supports and hinge supports at intervals. At the same time, the supports should have enough joint strength, and it is necessary to set restraining devices to avoid the penstock sliding off the supports.

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  - Yu Zhou
AU  - Changzheng Shi
AU  - Wentao Xu
AU  - Hegao Wu
AU  - Shenghe Yang
PY  - 2024
DA  - 2024/04/24
TI  - The Adaptability to Fault Slip and Seismic Behavior of Exposed Steel Penstock Crossing Active Fault
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 699
EP  - 709
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_68
DO  - 10.2991/978-94-6463-398-6_68
ID  - Zhou2024
ER  -