铝合金桥梁的受力性能

总结分析国外铝合金桥梁受力性能研究成果及设计与工程实践经验。考虑铝合金焊接热效应及较低弹性模量的影响，对铝合金桥梁的结构形式应进行合理设计；对铝合金受弯构件的稳定性能分析后，提出提高铝结构稳定性的有效措施；借鉴荷兰学者对铝合金桥梁疲劳性能的研究成果，对铝桥的构造细节及整体疲劳性能进行分析。国外研究与工程实践表明，铝合金可以安全、经济地应用于桥梁工程。

Mechanical Performance of Aluminum Alloy Bridges

The research findings of mechanical performance and the design and construction experiences of the aluminum alloy bridges in foreign countries are summarized and analyzed.In consideration of the influences of welding heat effect and low elastic modulus of the aluminum alloy,the proposal that the aluminum alloy bridge structures should be more rationally designed is made.On the basis of analysis of the stability performance of the aluminum alloy flexural elements,the effective measures for enhancing the aluminum alloy structure stability are put forward.With reference to the research findings on fatigue of the aluminum alloy bridges obtained by the Netherland scholars,the structural details and global fatigue performance of the aluminum alloy bridges are analyzed.The researches and construction practice of foreign countries demonstrate that the aluminum alloy can be safely and economically applied to bridge engineering.