钢-混凝土连续组合梁的设计分析

Design and Analysis of Steel and Concrete Continuous Composite Beam

结合实际设计桥梁,讨论分析了一些钢-混凝土连续组合梁桥的设计要点。通过合理的控制连续梁中间支座顶升的方法,可以使连续组合梁得到很好的预加应力效果。通过增加中墩附近底板混凝土,可以增加桥梁结构的刚度,降低钢梁下缘的应力,并提高局部的稳定性。

Combining with a real design bridge, the article analyzes some design key points of the steel and concrete composite beam. The method of reasonably controlling the middle support lifting of continuous beam can make the continuous composite beam get the better pre-stressing effect. The increment of the bedplate concrete near the middle pier can increase the rigidity of bridge structure, reduce the stress at the lower edge of steel beam, and improve the local stability.