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A Numerical Study on Load Distribution Factors for Simplified Composite H-Beam Panel Bridges  

Park, Jong Sup (상명대학교 토목환경공학부)
Kim, Jae Heung (상명대학교 대학원 토목환경공학부)
Publication Information
Journal of Korean Society of Steel Construction / v.21, no.3, 2009 , pp. 221-232 More about this Journal
Abstract
The load distribution factor (LDF) values of simplified composite H beam panel bridges (SCHPBs) that were subjected to one lane and two lane loads were investigated using three dimensional finite element analyses with the computer program ABAQUS (2007). This study considered some design parameters such as the slab thickness, the steel plate thickness, the span length, and the continuity of the SCHPBs in the development of new LDFs. The distribution values that were obtained from these analyses were compared with those from the AASHTO Standard, LRFD, and the equations presented by Tarhini and Frederick, Huo et al., Back and Shin, and Cai. The AASHTO Standard distribution factors for SCHPBs were found to be very conservative. Sometimes, the distribution values from the finite element analyses for interior girders were similar to the results of the AASHTO LRFD, whereas the values for exterior girders were conservative in most cases. The new distribution values that were presented in this study produced LDFs that are more conservative than those from the finite element method. For the simple application of the design to SCHPBs, bridge engineers can use 0.42 for the interior girder and 0.32 for the exterior girder. The proposed values improve the current design procedure for the LDF problem and increase SCHPB design efficiency.
Keywords
simplified composite H-beam panel bridge; load distribution factor; rolled beam(H-beam); bridge design;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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