钢管混凝土拱桥灌注混凝土过程中钢管受力分析

Analysis of Steel Tube Stress in Course of Pouring Concrete of Steel Tube Concrete Arch Bridge

钢管混凝土拱桥在压力灌注钢管内混凝土过程中,钢管受力十分复杂,对于其安全性必须引起重视。该文以上海浦东长清路川杨河桥为例,介绍了其拱肋及内部加劲构造,建立组合有限元模型,分析了拱肋钢管在灌注过程中的混凝土压强作用下的受力情况,并对几种加劲构造的作用作了分析,在此基础上对设计和施工中应注意的问题作了小结。

In the course of pouring the concrete into the steel tube by pressure for the steel tube concrete arch bridge,the stress of the steel tube is very complex.Thus it must be paying much attention to its safety.Taking the Changqing Road Chuanyang River Bridge in Shanghai Pudong as an example,the article introduces its arch rib and inner stiffening conformation,sets up the combined finite element model to analyze the stress characteristics of the arch rib steel tube under the concrete pressure action in the course of pouring,and analyzes the actions of several stiffening conformations.The article sums up the cautions in the design and construction on this basis.