Comparison of various FEM approaches in analysisof passive earth pressures

• Autorzy: Pecník M. , Borzovič V.
• Języki publikacji: EN

Abstrakty

EN

Passive earth pressure is an important element in integral bridge design. Due to the integral connection between bridge deck and abutments, the integral bridge expansion and contraction under temperature action causes abutments to move together with the deck. With temperature varying in time, this also causes varying earth pressures acting on the abutments. Abutments are generally being designed to with stand passive earth pressure because it is significantly higher than active earth pressure. However, by using the controlled yielding technique, these pressures can be considerably lowered. For this purpose, a few-centimeters-thick layer of easily compressible material is placed behind abutment, which provides a means to potential material saving. In this article, results from2D and 3D FEM models of integral abutment are presented. Internal forces obtained in 2D and 3D analysis are compared between themselves, and influence of compressible layer thickness on internal forces is also presented.

Słowa kluczowe

EN

abutment; earth pressure; integral bridge; polystyrene

PL

przyczółek; ciśnienie ziemi; integralny most; polistyren

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Computer Assisted Methods in Engineering and Science
• Rocznik: 2017
• Tom: Vol. 24, no. 4
• Strony: 253--258
• Opis fizyczny: Bibliogr. 4 poz., tab., wykr.

Twórcy

autor

Pecník M.

• Faculty of Civil Engineering Slovak University of Technology in Bratislava Radlinského 11, 810 05 Bratislava, Slovakia

autor

Borzovič V.

• Faculty of Civil Engineering Slovak University of Technology in Bratislava Radlinského 11, 810 05 Bratislava, Slovakia

Bibliografia

• [1] Pennsylvania Department of Transportation. Design Manual Part 4, April 2015 Edition. https://www.dot.state.pa.us/public/PubsForms/Publications/PUB%2015M.pdf
• [2] SOFiSTiK AG. SOFiSTiK Structural Desktop see www.sofistik.com
• [3] E.G. Scott. Passive Force on Bridged Abutments and Geofoam Inclusions with Large-Scale Test. Master thesis, Brigham Young University, 2015.
• [4] K.M. Rollins, E. Scott, A. Marsh. Geofoam inclusions for reducing passive force on bridge abutments based on large-scale test. Geotechnical Frontiers 2017 GSP 279, pp. 59–68, 2017.