随着桥梁跨径的不断增大，悬索桥的颤振稳定问题日益突出。
The flutter stability of suspension bridge is becoming more and more important with increase of the span.
介绍了目前西部农村建造中小跨径桥梁常用的桥型结构及特点；
The paper introduces the structure of the medium and small spanning bridges which is often used in western countrysides, and its characteristics.
大跨径钢桥面铺装是桥梁建设中的难点。
Steel bridge pavement is the difficulty in construction of bridge.
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