Live load distribution equations for integral bridge substructures

Date

2009-05-01

Author

Erhan, Semih
Dicleli, Murat

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In this study, live load distribution equations (LLDEs) for integral bridge (IB) substructures are developed. For this purpose, numerous 3-D and corresponding 2-D structural models of typical IBs are built and analyzed under AASHTO live load. In the analyses, the effect of various superstructure and substructure properties such as span length, girder spacing, girder stiffness, abutment height, pile size, pile spacing and foundation soil stiffness are considered. The results from the 2-D and 3-D analyses are then used to calculate the live load distribution factors (LLDFs) for the abutments and piles of IBs as a function of the above mentioned properties. LLDEs are then developed to estimate the live load moments and shear in the abutments and piles of IBs using these LLDFs and nonlinear regression analysis methods. It is observed that the developed LLDEs yield a reasonably good estimate of live load moment and shear in the abutments and piles of IBs.

Subject Keywords

Civil and Structural Engineering

URI

https://hdl.handle.net/11511/47550

Journal

ENGINEERING STRUCTURES

DOI

https://doi.org/10.1016/j.engstruct.2009.01.020

Collections

Department of Engineering Sciences, Article

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Citation Formats

S. Erhan and M. Dicleli, “Live load distribution equations for integral bridge substructures,” ENGINEERING STRUCTURES, pp. 1250–1264, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47550.