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The article presents parametric analysis regarding the impact of subgrade and backfill stiffness on values and distribution of bending moments in the structural elements of a small integral box bridge made of cast in situ reinforced concrete. The analyzed parameters are the modulus of subgrade reaction under and behind the bridge structure (kv kh). At the beginning, the author presents the integral box bridge and selected parts of the bridge design. In particular, the author focuses on the method of modeling of the subgrade stiffness parameters under and behind the bridge structure, as well as their impact on the values and distribution of bending moments in the bridge structural elements. The bridge was designed by the author and built on the M9 motorway between the towns of Waterford and Kilcullen in Ireland. In conclusions, the author shares his knowledge and experience relating to the design of small integral bridges and culverts and puts forward recommendations as to further research on these type of structures in Poland.
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The article presents parametric analysis regarding the impact of subgrade and backfill stiffness on values and distribution of bending moments in the structural elements of a small integral box bridge made of cast in situ reinforced concrete. The analyzed parameters are the modulus of subgrade reaction under and behind the bridge structure (kv kh). At the beginning, the author presents the integral box bridge and selected parts of the bridge design. In particular, the author focuses on the method of modeling of the subgrade stiffness parameters under and behind the bridge structure, as well as their impact on the values and distribution of bending moments in the bridge structural elements. The bridge was designed by the author and built on the M9 motorway between the towns of Waterford and Kilcullen in Ireland. In conclusions, the author shares his knowledge and experience relating to the design of small integral bridges and culverts and puts forward recommendations as to further research on these type of structures in Poland.

Impact of subgrade and backfill stiffness on values and distribution of bending moments in integral box bridge

Studia Geotechnica et Mechanica

This work is licensed under the Creative Commons Attribution 4.0 International License.

The article presents parametric analysis regarding the impact of subgrade and backfill stiffness on values and distribution of bending moments in the...

Impact of subgrade and backfill stiffness on values and distribution of bending moments in integral box bridge

Article Category: Original Study

Published Online: Jun 30, 2021

Page range: 90 - 98

Received: Mar 26, 2020

Accepted: Jan 31, 2021

DOI: https://doi.org/10.2478/sgem-2021-0001

Keywords
precast box bridge, integral bridge, design, single-span bridge

© 2021 Andrzej Helowicz, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Impact of subgrade and backfill stiffness on values and distribution of bending moments in integral box bridge

Article Category: Original Study

Published Online: Jun 30, 2021

Page range: 90 - 98

Received: Mar 26, 2020

Accepted: Jan 31, 2021

DOI: https://doi.org/10.2478/sgem-2021-0001

Keywordsprecast box bridge, integral bridge, design, single-span bridge

© 2021 Andrzej Helowicz, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
precast box bridge, integral bridge, design, single-span bridge