Incorporation of Skew Effects in Live-Load Distribution Factors Developed for Typical Integral Bridges

Date

2018-02-01

Author

Dicleli, Murat

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

141
views

0
downloads

In current bridge design specifications, no provisions exist for live-load distribution (LLD) in the components of skewed integral bridges (SIBs). Thus, in this study, skew correction factors (SCFs) were developed for the girders, abutments, and piles of SIBs to adjust the readily available LLD formulae for integral bridges (IBs). For this purpose, two-dimensional (2D) and three-dimensional (3D) structural models (SMs) of numerous SIBs were constructed and then analyzed to calculate the LLD factors (LLDFs) for SIB components as a function of the skew angle and various structural parameters. The ratio of the LLDFs for SIBs to those for the same bridges with no skew were then used to formulate SCFs. Live-load (LL) effects in SIB components were then simply obtained by multiplying the SCFs with the results obtained from the readily available LLD formulae in the literature. The comparison of the results with those from structural analyses revealed that using the developed SCFs together with readily available LLD formulae for regular IBs yields reasonably good estimates of LL moment and shear in SIB components. (c) 2017 American Society of Civil Engineers.

Subject Keywords

Civil and Structural Engineering, Building and Construction

URI

https://hdl.handle.net/11511/40750

Journal

JOURNAL OF BRIDGE ENGINEERING

DOI

https://doi.org/10.1061/(asce)be.1943-5592.0001188

Collections

Department of Engineering Sciences, Article

Suggestions

OpenMETU
Core

Comparative Study on the Effect of Number of Girders on Live Load Distribution in Integral Abutment and Simply Supported Bridge Girders Yalcin, O. Fatih; Dicleli, Murat (SAGE Publications, 2013-06-01) In this study, the effect of the number of prestressed concrete girders on the distribution of live load effects among the girders of integral abutment bridges (IABs) and simply supported bridges (SSBs) is investigated. For this purpose, two and three dimensional finite element models (FEMs) of several single-span IABs and SSBs are built and analyzed. In the analyses, bridges with various superstructure properties, such as span length, girder type and size, slab thickness are considered. The finite element ...
Experimental Determination of Resistance Characteristics of Support Details Used in Prestressed Concrete Bridge Girders Baran, Eray; French, Catherine; Schultz, Arturo (American Society of Civil Engineers (ASCE), 2009-09-01) Static load tests were performed on support details used at the ends of prestressed concrete pedestrian bridge girders to determine the resistance characteristics of girder supports in the direction perpendicular to the longitudinal axis of the girders. The specimens tested represent support details that have also been widely used in prestressed concrete highway bridges in Minnesota and in other states. Two specimens, one representing the free-end detail and one representing the restrained-end detail were s...
Investigation of the Applicability of AASHTO LRFD Live Load Distribution equations for Integral Bridge Substructures Erhan, Semih; Dicleli, Murat (SAGE Publications, 2009-08-01) In this study, applicability of the AASHTO LRFD girder live load distribution equations (LLDEs) for integral bridge (IB) abutments and piles is investigated. For this Purpose, numerous 3-D and corresponding 2-D structural models of typical IBs are built and analyzed under AASHTO LRFD live load. In the analyses, the effect of various superstructure properties such as span length, slab thickness, girder spacing and stiffness are considered. The results from the 2-D and 3-D analyses are then used to calculate ...
Improved Seismic Response of Multisimple-Span Skewed Bridges Retrofitted with Link Slabs Sevgili, Gizem; Caner, Alp (American Society of Civil Engineers (ASCE), 2009-11-01) Results of a recent bridge inventory evaluation indicated that about 50% of Turkish highway bridges have more than 30 degrees of skew angle and can be classified as irregular bridges. During the recent major earthquake in Turkey, multisimple-span bridges with continuous decks and link slabs performed well even though these bridges were in the vicinity of the fault line. This study aims to evaluate the improvements in seismic response of skew bridges in terms of forces and displacements when link slabs are a...
Live Load Distribution Formulas for Single-Span Prestressed Concrete Integral Abutment Bridge Girders Dicleli, Murat (American Society of Civil Engineers (ASCE), 2009-11-01) In this study, live load distribution formulas for the girders of single-span integral abutment bridges (IABs) are developed. For this purpose, two and three dimensional finite-element models (FEMs) of several IABs are built and analyzed. In the analyses, the effects of various superstructure properties such as span length, number of design lanes, prestressed concrete girder size, and spacing as well as slab thickness are considered. The results from the analyses of two and three dimensional FEMs are then u...

Citation Formats

M. Dicleli, “Incorporation of Skew Effects in Live-Load Distribution Factors Developed for Typical Integral Bridges,” JOURNAL OF BRIDGE ENGINEERING, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40750.