Analysis on Optimal Transverse Position for Overweight Trucks to cross T-beam Bridges

YSN Junyuan, DENG Lu

Abstract

This paper aims to investigate the optimal transverse position for overweight trucks to cross the simply-supported multi-girder bridges. Finite element analysis is performed for a group of prefabricated concrete T-beam bridges commonly used in China under the action of overweight trucks with varying transverse positions. The maximum bending stresses at the mid-span of the girders are extracted from finite element analysis and compared with each other. The optimal transverse position is determined from the point of optimizing the structural response. The effects of a few important parameters, including the length of bridge spans, number of girders and type of girder connections on the optimal transverse truck position are investigated. It is found that the transverse loading position of overweight trucks has a significant impact on the responses of multi-girder bridges. For the T-beam bridges with odd number of girders, the optimal transverse position for overweight trucks is in the middle between the center girder and the adjacent girder; for the T-beam bridges with even number of girders, the optimal transverse truck position is the centerline of the bridge. The influence of the girder connection condition on the bridge responses is significant.

 

Keywords: optimal transverse position,  overweight truck,  finite element analysis,  T-beam bridges


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References


JI B H. FU 7. Q. Analysis of Chinese bridge collapse accident causes in recent years[j]. China Civil Engineering Journal. 2010.43(SI): 495-498. (In Chinese)

WARDHANA K. HADIPRIONO F. Analysis of recent bridge failures in the United Slates [J]. Journal of Performance of Constructed Facilities. 2003.17( 3): 144- 150.

FU G,HAG-ELSAFI O. Vehicular overloadsdoad model,bridge safety,and permit checking [J]. Journal of Bridge Engineering, 2000, 5(1):49-57.

GHOSN M. Development of truck weight regulations using bridge reliability model [J]. Journal of Bridge Engineering,2000,5 (4): 293-303.

ADAMS T M, MALAIKRISANACHALEE S, BLAZQUEZ C,et al. Enterprise-wide data integration and analysis for oversize/overweight permitting, [J]. Anglais, 2002, 16(1):11-22.

] VIGH A, KOLLAR L.Approximate analysis of bridges for the routing and permitting procedures of overweight vehicles [J]. Journal of Bridge Engineering,2006,11(3 ):282-292.

VIGH A, KOLLAR L. Routing and permitting techniques of overweight vehicles [J]. Journal of Bridge Engineering, 2007,12 (6):774-784.

DENG L,BI T.HE W. Study of vehicle load effect considering the effect of weight limit signs on restricting drivers' behavior [J]. Journal of Hunan University ( Natural Sciences) ,2015,42 (11): 49-55. (In Chinese)

YIN X F, DENG L. Impact factor analysis of bridges under random traffic loads [J]. Journal of Hunan University (Natural Sciences), 2015.42(9):68-75. (In Chinese)

YIN W.The method reseach of determing limited load value for overweight vehicles cross bridges based on reliability theory [D], Guangzhou: School of Civil and Transportation Engineering, Guangdong University of Technology ,2012:91-92. (In Chinese)

ZONG X M. Evaluation and management of bridges subjected to overweight vehicles [D]. Xi'an: School of Highway, Changan University ,2003:74-75. (In Chinese)

XU J W. Study on the whole rigidity of T-beam bridges[D]. Xi'an : School of Highway, Chang'an University, 2009: 29-30. (In Chinese)


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