Crack Propagation of Vehicle‑Steel Bridge Deck Slabs Based on Pavement Damage

TANG Sheng, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , ChinaFollow
YIN Xinfeng, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
ZHANG Ming, Zhejiang Jiaotou Traffic Construction Management Co ., Ltd., Hangzhou , Zhejiang 310000 , China
YAN Wanli, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China

Abstract

In order to study the influence of vehicles under different pavement damage conditions on crack propagation of welded toe at the roof of steel bridge deck slabs,finite element models of suspension bridges,fine vehicles,and local steel bridge deck slabs were established,and multiple groups of obstacle heights were set to simulate pavement damage.The explicit dynamic analysis program was used to simulate vehicle-bridge coupling vibration and extract the forces of vehicles on the steel bridge deck slabs at different lanes,speeds,and obstacle heights.The crack propagation life of the welded toe at the roof was obtained by applying them to a local steel bridge deck slab model.The results show that:①The impact effect of vehicles on the bridge will accelerate the fatigue failure of the steel bridge deck slabs under pavement damage.Driving on normal pavement does not lead to crack propagation of the welded toe at the roof,while the crack propagation life exists under pavement damage;② The crack propagation life of the welded toe at the roof in the same lane decreases with the increase in vehicle speed and decreases first and then increases with the increase in obstacle height;③At the speed of 80 km/h in lane 3,the initial obstacle height at crack propagation of welded toe at the roof exists at 80 mm,and the most unfavorable obstacle height is 100 mm,while at the obstacle height of 60 mm,the initial speed at crack propagation of welded toe at the roof exists at 90 km/h.

Publication Date

2-22-2025

DOI

10.14048/j.issn.1671-2579.2025.01.016

First Page

135

Last Page

145,152

Submission Date

March 2025

Recommended Citation

Sheng, TANG; Xinfeng, YIN; Ming, ZHANG; and Wanli, YAN (2025) "Crack Propagation of Vehicle‑Steel Bridge Deck Slabs Based on Pavement Damage," Journal of China & Foreign Highway: Vol. 45: Iss. 1, Article 16.
DOI: 10.14048/j.issn.1671-2579.2025.01.016
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss1/16

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