Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks

Yannis K. Chaloulos; George D. Bouckovalas; Dimitris K Karamitros

doi:10.1016/j.compgeo.2016.10.018

Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks

Yannis K. Chaloulos, George D. Bouckovalas, Dimitris K Karamitros

Research output: Contribution to journal › Article (Academic Journal) › peer-review

8 Citations (Scopus)

267 Downloads (Pure)

Abstract

Existing relationships for lateral backfill pressures on pipelines assume that the trench is adequately wide to contain the failure surface. This condition is commonly violated in design and construction practice, putting at risk the pipeline safety. In this context, size and shape effects for trenches excavated in stiff soils and rocks, are numerically investigated, through experimentally-calibrated parametric analyses. It is shown that, for narrow trenches, ultimate pressures and yield displacements may increase up to an order of magnitude compared to “infinite-trench” values, while excavation of inclined walls reduces the above detrimental effects. Simplified relations are developed to aid pipeline design.

Original language	English
Pages (from-to)	52-63
Number of pages	12
Journal	Computers and Geotechnics
Volume	83
Early online date	5 Nov 2016
DOIs	https://doi.org/10.1016/j.compgeo.2016.10.018
Publication status	Published - Mar 2017

Keywords

Buried pipelines
Trench
Dry sand
Lateral movement
Numerical analyses
Design

Access to Document

10.1016/j.compgeo.2016.10.018

Full-text PDF (accepted author manuscript)
This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0266352X16302592 . Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 235 KB

Fingerprint Dive into the research topics of 'Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks'. Together they form a unique fingerprint.

Dr Dimitris K Karamitros
- d.karamitros@bristol.ac.uk
- Department of Civil Engineering - Senior Lecturer in Civil Engineering
- Earthquake and Geotechnical Engineering
Person: Academic , Member

Cite this

@article{2a9800d1021047a989b55856c8bb8d6a,

title = "Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks",

abstract = "Existing relationships for lateral backfill pressures on pipelines assume that the trench is adequately wide to contain the failure surface. This condition is commonly violated in design and construction practice, putting at risk the pipeline safety. In this context, size and shape effects for trenches excavated in stiff soils and rocks, are numerically investigated, through experimentally-calibrated parametric analyses. It is shown that, for narrow trenches, ultimate pressures and yield displacements may increase up to an order of magnitude compared to “infinite-trench” values, while excavation of inclined walls reduces the above detrimental effects. Simplified relations are developed to aid pipeline design.",

keywords = "Buried pipelines, Trench, Dry sand, Lateral movement, Numerical analyses, Design",

author = "Chaloulos, {Yannis K.} and Bouckovalas, {George D.} and Karamitros, {Dimitris K}",

year = "2017",

month = mar,

doi = "10.1016/j.compgeo.2016.10.018",

language = "English",

volume = "83",

pages = "52--63",

journal = "Computers and Geotechnics",

issn = "0266-352X",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks

AU - Chaloulos, Yannis K.

AU - Bouckovalas, George D.

AU - Karamitros, Dimitris K

PY - 2017/3

Y1 - 2017/3

N2 - Existing relationships for lateral backfill pressures on pipelines assume that the trench is adequately wide to contain the failure surface. This condition is commonly violated in design and construction practice, putting at risk the pipeline safety. In this context, size and shape effects for trenches excavated in stiff soils and rocks, are numerically investigated, through experimentally-calibrated parametric analyses. It is shown that, for narrow trenches, ultimate pressures and yield displacements may increase up to an order of magnitude compared to “infinite-trench” values, while excavation of inclined walls reduces the above detrimental effects. Simplified relations are developed to aid pipeline design.

AB - Existing relationships for lateral backfill pressures on pipelines assume that the trench is adequately wide to contain the failure surface. This condition is commonly violated in design and construction practice, putting at risk the pipeline safety. In this context, size and shape effects for trenches excavated in stiff soils and rocks, are numerically investigated, through experimentally-calibrated parametric analyses. It is shown that, for narrow trenches, ultimate pressures and yield displacements may increase up to an order of magnitude compared to “infinite-trench” values, while excavation of inclined walls reduces the above detrimental effects. Simplified relations are developed to aid pipeline design.

KW - Buried pipelines

KW - Trench

KW - Dry sand

KW - Lateral movement

KW - Numerical analyses

KW - Design

U2 - 10.1016/j.compgeo.2016.10.018

DO - 10.1016/j.compgeo.2016.10.018

M3 - Article (Academic Journal)

VL - 83

SP - 52

EP - 63

JO - Computers and Geotechnics

JF - Computers and Geotechnics

SN - 0266-352X

ER -

Trench effects on lateral p-y relations for pipelines embedded in stiff soils and rocks

Abstract

Keywords

Access to Document

Dr Dimitris K Karamitros

Cite this