Comparison of fatigue performance between steel-UHPC composite deck and epoxy asphalt steel deck based on stress monitoring

被引：0
|
作者：
Qin S. [1 ]
Huang C. [1 ]
Zhang J. [1 ]
Gao L. [2 ,3 ]
机构：
[1] School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan
[2] China Railway Bridge Science Research Institute Co., Ltd., Wuhan
[3] State Key Laboratory for Health and Safety of Bridge Structures, China Railway Major Bridge Engineering Group Co., Ltd., Wuhan
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2021年 / 51卷 / 01期
关键词：
Bridge engineering; Fatigue assessment; Orthotropic steel deck; Steel-UHPC(ultra-high performance concrete) composite deck; Stress monitoring;
D O I：
10.3969/j.issn.1001-0505.2021.01.009
中图分类号：
学科分类号：
摘要：
To evaluate the improvement of the fatigue performance of orthotropic steel deck by different reinforcement schemes, the fatigue performance of the OSD(orthotropic steel deck) reinforced by steel-UHPC (ultra-high performance concrete) and ERE (epoxy bond chips layer, resin asphalt and epoxy bond chips layer) were compared. Based on the data of stress records for a continuous week, the maximum stress amplitude, the equivalent stress amplitude, and the residual fatigue life of each fatigue-prone detail were calculated by the linear cumulative rule. A finite element model was established to quantitatively compare the stiffness of the two strengthening schemes. The influence of traffic flow and temperature change on the fatigue life of fatigue-prone details was analyzed. The results show that the maximum stress amplitude and the equivalent stress amplitude of each fatigue-prone detail of the steel-UHPC composite bridge deck are smaller than those of the ERE pavement bridge deck. The fatigue life of each fatigue-prone detail of the steel-UHPC composite bridge deck is greater than that of the ERE pavement bridge deck except for fatigue-prone details with infinite fatigue life. The steel-UHPC composite bridge deck has greater bending stiffness, and the maximum deflection of the steel-UHPC deck is 67.29% of that of the ERE pavement bridge deck. The influences of the flow rate increase on the fatigue life of each fatigue-prone detail of the bridge deck reinforced by two reinforcement schemes are basically the same, and the steel-UHPC composite deck has better high temperature resistance. © 2021, Editorial Department of Journal of Southeast University. All right reserved.
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页码：61 / 70
页数：9
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