湖南大学学报（自然科学版）Issue(9)：59-67,9.
基于有效缺口应力法的正交异性钢桥面板疲劳评价∗
Fatigue Assessment of Orthotropic Steel Bridge Deck Based on the Effective Notch Stress Method
摘要
Abstract
In order to confirm that the effective notch stress method is applicable to the fatigue assess-ment of orthotropic steel bridge deck,the local stress characteristics of two different transition forms in the arc notch details of diaphragm was studied.The effective notch stress in the weld toe and the weld root of the rib-to-diaphragm was computed separately and compared.The result has shown that the crack is easier to generate in the weld toe.The experiment result was assessed by S-N curve,and the result has shown that the effective notch stress method is suitable for assessing orthotropic steel bridge deck.The notch radius was assumed to be zero and it would result in conservative results.Based on the comparison of different rib thickness,it is found that the crack initiation in the rib-to-diaphragm seems to be easier to generate with the increase of rib thickness.This study can provide important information for design of or-thotropic steel bridge deck,as well as for the evaluation of the fatigue performance of orthotropic steel bridge deck.关键词
疲劳/构造细节/有效缺口应力法/正交异性桥面板Key words
fatigue/welding details/effective notch stress method/orthotropic steel bridge deck分类
交通工程引用本文复制引用
祝志文,钱六五..基于有效缺口应力法的正交异性钢桥面板疲劳评价∗[J].湖南大学学报（自然科学版）,2015,(9):59-67,9.基金项目
国家自然科学基金资助项目(51278191),National Natural Science Foundation of China(51278191) （51278191）
国家重点基础研究发展计划(973计划)资助项目(2015CB0577) （973计划）
湖南省高校创新平台开放基金资助项目(13K016) （13K016）
