Long-term response prediction of integral abutment bridges

K. Pugasap, W. Kim, Jeffrey A. Laman

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The importance of long-term behavior in integral abutment (IA) bridges has long been recognized. This paper presents an analytical, long-term, response prediction methodology using finite-element (FE) models and compares results to measured response. Three instrumented Pennsylvania IA bridges have been continuously monitored since November 2002, November 2003, and September 2004 to capture bridge response. An evaluation of measured responses indicates that bridge movement progresses year to year with long-term response being significant with respect to static predictions. Both two-dimensional and three-dimensional FE models were developed using ANSYS to determine an efficient and accurate analysis level. Seasonal cyclic ambient temperature and equivalent temperature derived from time-dependent strains using the age adjusted effective modulus method were employed as major loads in all FE models. The elastoplastic p-y curve method, classical earth pressure theory, and moment-rotation relationships with parallel unloading paths were used to model hysteretic behavior of soil-pile interaction, soil-abutment interaction, and abutment-to-backwall connection. Predicted soil pressures obtained from all FE models are similar to the measured response. Predicted abutment displacements and corresponding design forces and moments at the end of the analytically simulated 100-year period indicate the significance of long-term behavior that should be considered in IA bridge design.

Original languageEnglish (US)
Pages (from-to)129-139
Number of pages11
JournalJournal of Bridge Engineering
Volume14
Issue number2
DOIs
StatePublished - Feb 24 2009

Fingerprint

Abutments (bridge)
Soils
Unloading
Piles
Earth (planet)
Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction

Cite this

@article{23c56980eabb45deab53b015946f0d4e,
title = "Long-term response prediction of integral abutment bridges",
abstract = "The importance of long-term behavior in integral abutment (IA) bridges has long been recognized. This paper presents an analytical, long-term, response prediction methodology using finite-element (FE) models and compares results to measured response. Three instrumented Pennsylvania IA bridges have been continuously monitored since November 2002, November 2003, and September 2004 to capture bridge response. An evaluation of measured responses indicates that bridge movement progresses year to year with long-term response being significant with respect to static predictions. Both two-dimensional and three-dimensional FE models were developed using ANSYS to determine an efficient and accurate analysis level. Seasonal cyclic ambient temperature and equivalent temperature derived from time-dependent strains using the age adjusted effective modulus method were employed as major loads in all FE models. The elastoplastic p-y curve method, classical earth pressure theory, and moment-rotation relationships with parallel unloading paths were used to model hysteretic behavior of soil-pile interaction, soil-abutment interaction, and abutment-to-backwall connection. Predicted soil pressures obtained from all FE models are similar to the measured response. Predicted abutment displacements and corresponding design forces and moments at the end of the analytically simulated 100-year period indicate the significance of long-term behavior that should be considered in IA bridge design.",
author = "K. Pugasap and W. Kim and Laman, {Jeffrey A.}",
year = "2009",
month = "2",
day = "24",
doi = "10.1061/(ASCE)1084-0702(2009)14:2(129)",
language = "English (US)",
volume = "14",
pages = "129--139",
journal = "Journal of Bridge Engineering",
issn = "1084-0702",
publisher = "American Society of Civil Engineers (ASCE)",
number = "2",

}

Long-term response prediction of integral abutment bridges. / Pugasap, K.; Kim, W.; Laman, Jeffrey A.

In: Journal of Bridge Engineering, Vol. 14, No. 2, 24.02.2009, p. 129-139.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Long-term response prediction of integral abutment bridges

AU - Pugasap, K.

AU - Kim, W.

AU - Laman, Jeffrey A.

PY - 2009/2/24

Y1 - 2009/2/24

N2 - The importance of long-term behavior in integral abutment (IA) bridges has long been recognized. This paper presents an analytical, long-term, response prediction methodology using finite-element (FE) models and compares results to measured response. Three instrumented Pennsylvania IA bridges have been continuously monitored since November 2002, November 2003, and September 2004 to capture bridge response. An evaluation of measured responses indicates that bridge movement progresses year to year with long-term response being significant with respect to static predictions. Both two-dimensional and three-dimensional FE models were developed using ANSYS to determine an efficient and accurate analysis level. Seasonal cyclic ambient temperature and equivalent temperature derived from time-dependent strains using the age adjusted effective modulus method were employed as major loads in all FE models. The elastoplastic p-y curve method, classical earth pressure theory, and moment-rotation relationships with parallel unloading paths were used to model hysteretic behavior of soil-pile interaction, soil-abutment interaction, and abutment-to-backwall connection. Predicted soil pressures obtained from all FE models are similar to the measured response. Predicted abutment displacements and corresponding design forces and moments at the end of the analytically simulated 100-year period indicate the significance of long-term behavior that should be considered in IA bridge design.

AB - The importance of long-term behavior in integral abutment (IA) bridges has long been recognized. This paper presents an analytical, long-term, response prediction methodology using finite-element (FE) models and compares results to measured response. Three instrumented Pennsylvania IA bridges have been continuously monitored since November 2002, November 2003, and September 2004 to capture bridge response. An evaluation of measured responses indicates that bridge movement progresses year to year with long-term response being significant with respect to static predictions. Both two-dimensional and three-dimensional FE models were developed using ANSYS to determine an efficient and accurate analysis level. Seasonal cyclic ambient temperature and equivalent temperature derived from time-dependent strains using the age adjusted effective modulus method were employed as major loads in all FE models. The elastoplastic p-y curve method, classical earth pressure theory, and moment-rotation relationships with parallel unloading paths were used to model hysteretic behavior of soil-pile interaction, soil-abutment interaction, and abutment-to-backwall connection. Predicted soil pressures obtained from all FE models are similar to the measured response. Predicted abutment displacements and corresponding design forces and moments at the end of the analytically simulated 100-year period indicate the significance of long-term behavior that should be considered in IA bridge design.

UR - http://www.scopus.com/inward/record.url?scp=60449108346&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=60449108346&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)1084-0702(2009)14:2(129)

DO - 10.1061/(ASCE)1084-0702(2009)14:2(129)

M3 - Article

AN - SCOPUS:60449108346

VL - 14

SP - 129

EP - 139

JO - Journal of Bridge Engineering

JF - Journal of Bridge Engineering

SN - 1084-0702

IS - 2

ER -