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 | |
| 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/ |
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 |
Keywords
- Analysis
- Bridge
- Bridge access
- Bridge loads
- Heavy vehicles
- Load distribution factors
Cite this
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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
TY - GEN
T1 - Lateral distribution factors in heavy vehicle bridge access decision-making
AU - Melhem, M. M.
AU - Caprani, C. C.
AU - Lui, T. M. T.
AU - Ng, A.
PY - 2020
Y1 - 2020
N2 - 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.
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.
KW - Analysis
KW - Bridge
KW - Bridge access
KW - Bridge loads
KW - Heavy vehicles
KW - Load distribution factors
UR - http://www.scopus.com/inward/record.url?scp=85072083019&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-7603-0_96
DO - 10.1007/978-981-13-7603-0_96
M3 - Conference Paper
SN - 9789811376023
T3 - Lecture Notes in Civil Engineering
SP - 1017
EP - 1026
BT - ACMSM25
A2 - Wang, Chien Ming
A2 - Ho, Johnny C. M.
A2 - Kitipornchai, Sritawat
PB - Springer
CY - Singapore
ER -