Lateral distribution factors in heavy vehicle bridge access decision-making

M. M. Melhem; C. C. Caprani; T. M. T. Lui; A. Ng

doi:10.1007/978-981-13-7603-0_96

Lateral distribution factors in heavy vehicle bridge access decision-making

M. M. Melhem, C. C. Caprani, T. M. T. Lui, A. Ng

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

Lateral distribution factors (LDFs) indicate the proportion of load effects carried by bridge elements across the width of the bridge deck. Such factors facilitate more informed assessments for heavy vehicle access on existing bridges. Alas, for heavy vehicles travelling on existing Australian bridges, the LDFs are relatively unknown. This study aims to determine such factors for four test vehicles on three concrete bridge families. Each family comprises five simply-supported single spans. Two design lane positions and two load effects, bending moment and shear, are considered. Altogether, 240 finite element (FE) analyses are conducted to obtain the LDFs. It is found that the LDFs vary with bridge deck stiffness, spans, test vehicle, and axle width. Additionally, published AASHTO formulae are found to be suitable for only some Australian vehicles and bridge decks. Ultimately, these distribution factors allow a quick means for analysing the effect of such heavy vehicles without having to perform time-consuming 3D FE analysis when assessing safe vehicle access to bridges.

Original language	English
Title of host publication	ACMSM25
Subtitle of host publication	Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials
Editors	Chien Ming Wang, Johnny C. M. Ho, Sritawat Kitipornchai
Place of Publication	Singapore
Publisher	Springer
Pages	1017-1026
Number of pages	10
ISBN (Electronic)	9789811376030
ISBN (Print)	9789811376023
DOIs	https://doi.org/10.1007/978-981-13-7603-0_96
Publication status	Published - 2020
Event	Australasian Conference on the Mechanics of Structures and Materials 2018 - Brisbane, Australia Duration: 4 Dec 2018 → 7 Dec 2018 Conference number: 25th https://acmsm25.com.au/ https://link.springer.com/book/10.1007%2F978-981-13-7603-0 (Proceedings)

Publication series

Name	Lecture Notes in Civil Engineering
Publisher	Springer
Volume	37
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	Australasian Conference on the Mechanics of Structures and Materials 2018
Abbreviated title	ACMSM 2018
Country	Australia
City	Brisbane
Period	4/12/18 → 7/12/18
Internet address	https://acmsm25.com.au/ https://link.springer.com/book/10.1007%2F978-981-13-7603-0 (Proceedings)

Keywords

Analysis
Bridge
Bridge access
Bridge loads
Heavy vehicles
Load distribution factors

Access to Document

10.1007/978-981-13-7603-0_96

Link to publication in Scopus

Cite this

Melhem, M. M., Caprani, C. C., Lui, T. M. T., & Ng, A. (2020). Lateral distribution factors in heavy vehicle bridge access decision-making. In C. M. Wang, J. C. M. Ho, & S. Kitipornchai (Eds.), ACMSM25: Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials (pp. 1017-1026). (Lecture Notes in Civil Engineering; Vol. 37). Springer. https://doi.org/10.1007/978-981-13-7603-0_96

Melhem, M. M. ; Caprani, C. C. ; Lui, T. M. T. ; Ng, A. / Lateral distribution factors in heavy vehicle bridge access decision-making. ACMSM25: Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials. editor / Chien Ming Wang ; Johnny C. M. Ho ; Sritawat Kitipornchai. Singapore : Springer, 2020. pp. 1017-1026 (Lecture Notes in Civil Engineering).

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abstract = "Lateral distribution factors (LDFs) indicate the proportion of load effects carried by bridge elements across the width of the bridge deck. Such factors facilitate more informed assessments for heavy vehicle access on existing bridges. Alas, for heavy vehicles travelling on existing Australian bridges, the LDFs are relatively unknown. This study aims to determine such factors for four test vehicles on three concrete bridge families. Each family comprises five simply-supported single spans. Two design lane positions and two load effects, bending moment and shear, are considered. Altogether, 240 finite element (FE) analyses are conducted to obtain the LDFs. It is found that the LDFs vary with bridge deck stiffness, spans, test vehicle, and axle width. Additionally, published AASHTO formulae are found to be suitable for only some Australian vehicles and bridge decks. Ultimately, these distribution factors allow a quick means for analysing the effect of such heavy vehicles without having to perform time-consuming 3D FE analysis when assessing safe vehicle access to bridges.",

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Melhem, MM , Caprani, CC, Lui, TMT & Ng, A 2020, Lateral distribution factors in heavy vehicle bridge access decision-making. in CM Wang, JCM Ho & S Kitipornchai (eds), ACMSM25: Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials. Lecture Notes in Civil Engineering, vol. 37, Springer, Singapore, pp. 1017-1026, Australasian Conference on the Mechanics of Structures and Materials 2018, Brisbane, Australia, 4/12/18. https://doi.org/10.1007/978-981-13-7603-0_96

Lateral distribution factors in heavy vehicle bridge access decision-making. / Melhem, M. M.; Caprani, C. C.; Lui, T. M. T.; Ng, A.

ACMSM25: Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials. ed. / Chien Ming Wang; Johnny C. M. Ho; Sritawat Kitipornchai. Singapore : Springer, 2020. p. 1017-1026 (Lecture Notes in Civil Engineering; Vol. 37).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

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AB - Lateral distribution factors (LDFs) indicate the proportion of load effects carried by bridge elements across the width of the bridge deck. Such factors facilitate more informed assessments for heavy vehicle access on existing bridges. Alas, for heavy vehicles travelling on existing Australian bridges, the LDFs are relatively unknown. This study aims to determine such factors for four test vehicles on three concrete bridge families. Each family comprises five simply-supported single spans. Two design lane positions and two load effects, bending moment and shear, are considered. Altogether, 240 finite element (FE) analyses are conducted to obtain the LDFs. It is found that the LDFs vary with bridge deck stiffness, spans, test vehicle, and axle width. Additionally, published AASHTO formulae are found to be suitable for only some Australian vehicles and bridge decks. Ultimately, these distribution factors allow a quick means for analysing the effect of such heavy vehicles without having to perform time-consuming 3D FE analysis when assessing safe vehicle access to bridges.

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Y2 - 4 December 2018 through 7 December 2018

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Melhem MM , Caprani CC, Lui TMT, Ng A. Lateral distribution factors in heavy vehicle bridge access decision-making. In Wang CM, Ho JCM, Kitipornchai S, editors, ACMSM25: Proceedings of the 25th Australasian Conference on Mechanics of Structures and Materials. Singapore: Springer. 2020. p. 1017-1026. (Lecture Notes in Civil Engineering). https://doi.org/10.1007/978-981-13-7603-0_96