Relationship Between Temperature and Earth Pressure for a Rigidly Framed Earth Retaining Structure

Research output: Contribution to journalArticle

Abstract

The relationship between temperature and earth pressure acting on a rigidly framed earth-retaining structure (RFERS) subject to wide temperature variation was explored. A distressed RFERS open concrete garage that retains 11 m (36 ft) of soil was instrumented. After some repairs, movement of the building was monitored and recorded hourly for a period of four and a half years. The monitoring revealed complex temperature-dependent soil-structure interactions. The measured displacements were used to calculate the earth pressure coefficient using closed form equations that were developed by treating the structure as an equivalent cantilever beam, and calibrating the expression using a total of 42,000 FEM models. The data indicated that the coefficient of earth pressure behind the monitored RFERS had a strong linear correlation with temperature. During the cold season the building contracted, and the retained soil followed. During the hot season, the building was unable to overcome the earth pressure, thus it expanded away from the soil, resulting in a cumulative annual displacement. The coefficient of lateral earth pressure changed by approximately 0. 005/°C, varying in the range of 1. 25-1. 5, depending on the season. The study also reveals that thermal cycles, rather than lateral earth pressure, caused some of the structural elements to fail.

Original languageEnglish (US)
Pages (from-to)519-539
Number of pages21
JournalGeotechnical and Geological Engineering
Volume31
Issue number2
DOIs
StatePublished - 2013

Fingerprint

earth pressure
Earth (planet)
temperature
Temperature
Soils
soil
cold season
soil-structure interaction
warm season
soil structure
repair
Soil structure interactions
Cantilever beams
heat
monitoring
Repair
Concretes
Finite element method
Monitoring

Keywords

  • Coefficient of thermal expansion
  • Concrete
  • Distress
  • Earth pressure
  • Failure
  • Forensic
  • Jointless bridges
  • Segmental bridges
  • Soil-structure interaction
  • Temperature
  • Thermal effects

ASJC Scopus subject areas

  • Architecture
  • Geology
  • Soil Science
  • Geotechnical Engineering and Engineering Geology

Cite this

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title = "Relationship Between Temperature and Earth Pressure for a Rigidly Framed Earth Retaining Structure",
abstract = "The relationship between temperature and earth pressure acting on a rigidly framed earth-retaining structure (RFERS) subject to wide temperature variation was explored. A distressed RFERS open concrete garage that retains 11 m (36 ft) of soil was instrumented. After some repairs, movement of the building was monitored and recorded hourly for a period of four and a half years. The monitoring revealed complex temperature-dependent soil-structure interactions. The measured displacements were used to calculate the earth pressure coefficient using closed form equations that were developed by treating the structure as an equivalent cantilever beam, and calibrating the expression using a total of 42,000 FEM models. The data indicated that the coefficient of earth pressure behind the monitored RFERS had a strong linear correlation with temperature. During the cold season the building contracted, and the retained soil followed. During the hot season, the building was unable to overcome the earth pressure, thus it expanded away from the soil, resulting in a cumulative annual displacement. The coefficient of lateral earth pressure changed by approximately 0. 005/°C, varying in the range of 1. 25-1. 5, depending on the season. The study also reveals that thermal cycles, rather than lateral earth pressure, caused some of the structural elements to fail.",
keywords = "Coefficient of thermal expansion, Concrete, Distress, Earth pressure, Failure, Forensic, Jointless bridges, Segmental bridges, Soil-structure interaction, Temperature, Thermal effects",
author = "Magued Iskander",
year = "2013",
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AB - The relationship between temperature and earth pressure acting on a rigidly framed earth-retaining structure (RFERS) subject to wide temperature variation was explored. A distressed RFERS open concrete garage that retains 11 m (36 ft) of soil was instrumented. After some repairs, movement of the building was monitored and recorded hourly for a period of four and a half years. The monitoring revealed complex temperature-dependent soil-structure interactions. The measured displacements were used to calculate the earth pressure coefficient using closed form equations that were developed by treating the structure as an equivalent cantilever beam, and calibrating the expression using a total of 42,000 FEM models. The data indicated that the coefficient of earth pressure behind the monitored RFERS had a strong linear correlation with temperature. During the cold season the building contracted, and the retained soil followed. During the hot season, the building was unable to overcome the earth pressure, thus it expanded away from the soil, resulting in a cumulative annual displacement. The coefficient of lateral earth pressure changed by approximately 0. 005/°C, varying in the range of 1. 25-1. 5, depending on the season. The study also reveals that thermal cycles, rather than lateral earth pressure, caused some of the structural elements to fail.

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KW - Thermal effects

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