【摘 要】
：
Bridges are designed for representative vehicles according to specifications.The live load forces in the members could induce a minute but serious local relative displacement between adjoining member
【机 构】
：
Lehigh University,Bethlehem,PA,USA URS Corporatio
【出 处】
：
The 7th International Conference on Bridge Maintenance, Safe
论文部分内容阅读
Bridges are designed for representative vehicles according to specifications.The live load forces in the members could induce a minute but serious local relative displacement between adjoining member components.This condition could result in a significantly high magnitude of local stresses at bridge details even when the live-load-induced forces in the members are far below the fatigue strength of these members.When the local live-load stresses at a structural detail is frequently higher than the fatigue threshold of that detail,fatigue cracking could develop.
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