双柱框架式桥墩横系梁的合理布置方式研究

发布时间：2018-01-04 06:07

本文关键词：双柱框架式桥墩横系梁的合理布置方式研究　出处：《中外公路》2014年04期 　论文类型：期刊论文

【摘要】：双柱框架式桥墩在山区中等跨径桥梁中应用广泛,但目前对其上横系梁的布置方式还是凭经验进行设计,缺少客观依据。该文以一采用双柱式框架墩的三跨连续梁桥为例,基于不同墩高下横系梁不同布置时结构静动力性能的参数分析,研究了不同墩高下墩底横系梁和中横系梁的不同布置对下部结构及整体结构受力的影响规律。结果表明:双柱框架式桥墩应设置墩底横系梁;墩高小于10m时,只需设置墩底横系梁;墩高介于10~50m之间时,在设置墩底横系梁的同时,应加设1~3道中横系梁。
[Abstract]:The double-column frame pier is widely used in middle span bridges in mountainous area, but the arrangement of its upper transverse girder is still designed by experience. This paper takes a three-span continuous beam bridge with two-column frame pier as an example, based on the static and dynamic performance analysis of the structure under different arrangement of transverse beam with different piers. This paper studies the influence of the different arrangement of the transverse beam at the bottom of the pier under the different piers and the transverse beam on the substructure and the whole structure. The results show that the pier bottom transverse beam should be set up in the double-column frame bridge pier. When the height of the pier is less than 10 m, only the transverse beam at the bottom of the pier should be set. When the height of the piers is between 10m and 50m, the transverse beams at the bottom of the piers should be installed at the same time as 1 or 3 channels.
【作者单位】：云南省交通规划设计研究院;
【分类号】：U442.5
【正文快照】： 中国西部山区高速公路沿线桥梁的上部结构普遍采用20~30m跨径的预制混凝土T梁或预制小箱梁、下部结构则多采用双柱框架式桥墩。双柱式框架墩一般由墩柱、盖梁、横系梁等组成,墩柱下通常设有桩基础。双柱式框架墩构造简单、施工便捷、结构稳定,沿横桥向具有一定的结构冗余度,使

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