轨道交通30m下承式预应力混凝土槽形梁结构分析

槽形梁是一种下承式预应力混凝土桥梁结构,具有建筑高度低、减少噪声等特点,但作为开口薄壁构件,受扭性能差,受力机理复杂。以上海某轨道交通停车场为背景,通过建立带预应力的有限元空间计算模型,分析了槽形梁空间受力特性,对类似工程槽形梁设计具有一定参考作用。

Structural Analysis of 30-m Through Prestressed Concrete Channel Beam for Rail Traffic

The channel beam is a kind of through prestressed concrete bridge structure with the features of low building height,low noise and so on.As the open thin-walled structure,its performance of torsion is poor and the stress mechanism is complex.Based on a rail traffic parking lot of Shanghai,the article analyzes the stress characters of channel beam by setting up the finite element spatial calculation model with the pre-stressing,which has a certain reference for the design of the similar channel beams.