MECHANICAL ANALYSIS OF THE SANDWICH PLATES METHOD FOR STRENGTHENING FATIGUE CRACKS IN ORTHOTROPIC STEEL BRIDGE DECKS

被引：0
|
作者：
Wang, Yuanqing [1 ]
Liu, Liyuan [1 ]
Shi, Yongjiu [1 ]
Pan, Peng [1 ]
Li, Yunsheng [2 ]
机构：
[1] Tsinghua Univ, Dept Civil Engn, China Educ Minist, Key Lab Civil Engn Safety & Durabil, Beijing 100084, Peoples R China
[2] Shijiazhuang Railway Inst, Sch Civil Engn, Shijiazhuang 050043, Peoples R China
来源：
INTERNATIONAL SYMPOSIUM ON LIFE-CYCLE PERFORMANCE OF BRIDGES AND STRUCTURES | 2010年
关键词：
steel bridges; fatigue cracks; orthotropic steel bridge decks; sandwich plates method;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The orthotropic steel deck is more and more widely used in bridges. But with the economic development, fatigue cracks in orthotropic steel bridge decks occur with the increasing of traffic volume. The sandwich plates method for strengthening fatigue cracks in orthotropic steel bridge decks is a relatively new method for bridge strengthening. This paper gives a brief introduction of the sandwich plates method and its application. Using finite element software ANSYS and ABAQUS, several kinds of elements were compared to obtain a reasonable and economical finite element model, which is suitable for simulating the sandwich plates. Vehicle load was applied according to General Code for Design of Highway Bridges and Culverts. The sandwich plates method was proved effective through the analysis of non-strengthened and strengthened orthotropic steel bridge decks. The stresses of the steel bridge decks were greatly reduced due to the sandwich plates strengthening method. In addition, parametric analysis of the elastic modulus of the middle layer was carried out, and the results indicted its effects on orthotropic decks' bearing behavior. Finally, a reasonable method for strengthening fatigue cracks in orthotropic steel bridge decks was put forward, so as to guide experimental research, as well as engineering design and practical operations of strengthening steel bridges.
引用
收藏
页码：403 / 411
页数：9
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