丰沙线某桥隧过渡段动力响应试验研究

发布时间：2018-01-04 19:20

本文关键词：丰沙线某桥隧过渡段动力响应试验研究　出处：《河北建筑工程学院学报》2016年04期 　论文类型：期刊论文

【摘要】：通过现场试验对桥隧过渡段的动力响应进行了研究,试验主要测试了不同车辆长度,不同车速对桥隧过渡段动力响应的影响,以了解不同车速和车辆长度的列车通过桥梁与隧道连接处时,桥梁与隧道过渡段的动力特性是否一致.通过对现场测试的数据进行分析整理得出,列车的总长度较长,车辆的速度较慢,通过桥隧过渡段的时间就会增长,进而使桥梁与隧道过渡段振动的持续时间也会增长;桥梁处的振动持续振动时间比隧道处的振动时间略长.桥梁与隧道连接处的振动频率基本一致,振动频率主要分布在50~100Hz范围内,且列车车厢数多,车速慢,在主要频率范围内的振动幅值要大.
[Abstract]:The dynamic response of bridge and tunnel transition section is studied by field test. The effect of different vehicle length and speed on the dynamic response of bridge and tunnel transition section is mainly tested. In order to understand whether the dynamic characteristics of the transition section of the bridge and tunnel are consistent when the train with different speed and vehicle length passes through the bridge and tunnel connection, the data of the field test are analyzed and sorted out. The total length of the train is longer and the speed of the vehicle is slower, the time of passing through the transition section of bridge and tunnel will increase, and the duration of vibration of the bridge and tunnel transition section will also increase. The vibration duration of the bridge is a little longer than that of the tunnel. The vibration frequency of the bridge and the tunnel is basically the same, and the vibration frequency is mainly distributed in the range of 50 ~ 100 Hz. The number of train cars is more, the speed is slow, and the amplitude of vibration is large in the main frequency range.
【作者单位】：河北建筑工程学院;
【基金】：河北建筑工程学院校科研基金项目基金号:(NO.B-201604)
【分类号】：U446;U451.5
【正文快照】： 0引言随着我国普通铁路的提速、高速公路、高速铁路的迅猛发展和建设势头,公路、铁路的路况条件和各类行车条件对提高行车的安全性和舒适度就变得越来越重要[1~2].由于公路桥梁路基宽度比隧道宽,在方便接线、减少占地、避免洞口路基或大桥分幅的同时,还要因地制宜考虑设置连拱

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