部分斜拉桥的发展及静力性能分析

Development and Static Performance Analysis of Partly Cable-stayed Bridge

部分斜拉桥是近年来出现处于梁桥与传统斜拉桥之间新的桥梁结构型式,本文分析和介绍了它的产生、发展以及静力性能,并研究了影响其静力行为的两个重要参数——主梁无索区长度和边跨与中跨比,显示这些因素对主梁和主塔的挠度、内力等影响。

Partly cable-stayed bridge is a new bridge structure between girder bridge and conventional cable-stayed bridge, of which the geneiation, development and static performance are analyzed and introduced in the paper. Two important factors affecting the mechanical behavior of this kind of bridge are studied. These factors include the length of non-stayed cable segment and the ratio between side span and main span. Influences caused by those factors on the internal force and the deflection of girder and tower are shown.