Effect of Seasonal Changes on a Hybrid Soil–Geofoam Embankment System

Effect of Seasonal Changes on a Hybrid Soil–Geofoam Embankment System The effects of climatic variations on the performance of the bridge infrastructure were not adequately addressed. This paper presents a comprehensive analysis of the effect of seasonal temperature and precipitation variations on a bridge infrastructure located in Johnson County, Texas. This bridge has undergone a rehabilitation process by partially replacing the embankment soil with lightweight expanded polystyrene geofoam (EPS geofoam) to reduce bridge approach slab settlements. Four years of monitored vertical deformation and pressure cell data from the field instrumentation was used to analyze the performance of the bridge slab and adjoining roadway pavement system. From the analysis, it was observed that the vertical pressures and total deformations were increased with an increase in temperature and were decreased with a decrease in temperature. Also, with an increase in the temperature, it was observed that the bridge retaining wall exerted lateral pressure on the geofoam blocks and with a decrease in temperature the pressures decreased considerably. This study highlights the observations made on the bridge approach slab and adjoining roadway pavement vertical deformations with respect to temperature and precipitation variations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Geosynthetics and Ground Engineering Springer Journals

Effect of Seasonal Changes on a Hybrid Soil–Geofoam Embankment System

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Publisher
Springer International Publishing
Copyright
Copyright © 2017 by Springer International Publishing AG, part of Springer Nature
Subject
Engineering; Geoengineering, Foundations, Hydraulics; Environmental Science and Engineering; Building Materials
ISSN
2199-9260
eISSN
2199-9279
D.O.I.
10.1007/s40891-017-0116-4
Publisher site
See Article on Publisher Site

Abstract

The effects of climatic variations on the performance of the bridge infrastructure were not adequately addressed. This paper presents a comprehensive analysis of the effect of seasonal temperature and precipitation variations on a bridge infrastructure located in Johnson County, Texas. This bridge has undergone a rehabilitation process by partially replacing the embankment soil with lightweight expanded polystyrene geofoam (EPS geofoam) to reduce bridge approach slab settlements. Four years of monitored vertical deformation and pressure cell data from the field instrumentation was used to analyze the performance of the bridge slab and adjoining roadway pavement system. From the analysis, it was observed that the vertical pressures and total deformations were increased with an increase in temperature and were decreased with a decrease in temperature. Also, with an increase in the temperature, it was observed that the bridge retaining wall exerted lateral pressure on the geofoam blocks and with a decrease in temperature the pressures decreased considerably. This study highlights the observations made on the bridge approach slab and adjoining roadway pavement vertical deformations with respect to temperature and precipitation variations.

Journal

International Journal of Geosynthetics and Ground EngineeringSpringer Journals

Published: Nov 29, 2017

References

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