Analysis of Influencing Factors on Internal Forces of Large-diameter Jacking Pipe Structures in Composite Formations

DOI

10.2991/978-94-6463-398-6_35How to use a DOI?

Keywords

composite strata; soil lateral pressure; electric power tunnel; segment structure; influence law

Abstract

The design of the existing top pipe pipeline structure adopts a plane strain model and assumes that the pipe circumference is a homogeneous foundation soil. By selecting typical geological conditions for internal force calculation and reinforcement of the pipeline structure, if the established rock and soil physical and mechanical parameters in the engineering design are different from the actual situation, that may cause engineering quality problems. Based on a large-diameter pipe jacking project in a composite formation, the load structure method and the formation structure method were used to analyze the variation law of the internal force of the pipe joint under different geological conditions on the pipe sidewall. The results showed that the better the physical and mechanical parameters of the soil on the pipe side and the lower the groundwater level, the greater the calculated internal force of the pipes. When the top of the pipe is covered with backfill soil, the greater the formation loss rate, the greater the inner force of the jacking pipe structures. During construction, the formation loss rate should be strictly controlled to ensure the safety of the pipeline structure.

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  - Bin Zhang
AU  - Xiaoxiang Chen
AU  - Jianwu Gong
PY  - 2024
DA  - 2024/04/24
TI  - Analysis of Influencing Factors on Internal Forces of Large-diameter Jacking Pipe Structures in Composite Formations
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 352
EP  - 363
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_35
DO  - 10.2991/978-94-6463-398-6_35
ID  - Zhang2024
ER  -