The Settlement of the Nearby Pipelines Caused by the Deep Metro Foundation Pit Excavation

DOI

10.2991/978-94-6463-449-5_79How to use a DOI?

Keywords

deep pit; pipeline deformation; numerical calculation

Abstract

When the deep foundation pit is excavating, it will cause stratums settlement, thereby affecting nearby buildings and pipelines under surface. In this paper, based on the e-p curve obtained from the compression test, the calculation method of tangential compression modulus under arbitrary pressure is derived. According to the overburden pressure at the midpoint at each stratum, the compression modulus of each stratum under the current state is calculated. According to the elastic modulus obtained from the reloaded compression test of some strata, the ratio of elastic modulus to tangential compression modulus of the stratum is obtained, and the elastic modulus of different depth strata is calculated as a calculation parameter. The comparison between the numerical calculation results and the field monitoring shows that the elastic modulus determined in this paper is suitable to the actual situation. Based on this, the settlements of two pipelines that are 16.5 m and 31.6 m away from the north edge of the foundation pit and have a depth of 3.92 m and 1.45 m respectively are analyzed. The result shows that the pipeline settlement will not exceed the threshold value and be in safe.

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  - Zhijia Peng
PY  - 2024
DA  - 2024/06/30
TI  - The Settlement of the Nearby Pipelines Caused by the Deep Metro Foundation Pit Excavation
BT  - Proceedings of the 2024 8th International Conference on Civil Architecture and Structural Engineering (ICCASE 2024)
PB  - Atlantis Press
SP  - 792
EP  - 800
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-449-5_79
DO  - 10.2991/978-94-6463-449-5_79
ID  - Peng2024
ER  -