铁道建筑
鐵道建築
철도건축
RAILWAY ENGINEERING
2014年
8期
1-4
,共4页
徐伟昌%李振廷%谭社会%陶佳元
徐偉昌%李振廷%譚社會%陶佳元
서위창%리진정%담사회%도가원
高速铁路%转体施工桥梁%变形监测%无砟轨道%轨面调整
高速鐵路%轉體施工橋樑%變形鑑測%無砟軌道%軌麵調整
고속철로%전체시공교량%변형감측%무사궤도%궤면조정
High-speed railway%Swing bridge%Deformation monitoring%Ballastless track%Rail surface adjustment
沪杭高速铁路一转体施工桥梁在温度荷载作用下梁体绕桥墩支座发生旋转，产生挠曲变形。为研究桥梁挠曲变形规律，进行了为期2年的监测。结果表明：主跨中心、边跨中心挠曲变形峰谷值分别约为50，25 mm，形成了类似正弦曲线的挠曲变形形态；桥梁挠曲变形幅值与环境温度具有高相关性。根据桥梁的挠曲变形特点制定了桥上无砟轨道轨面调整方案，方案实施后效果良好。
滬杭高速鐵路一轉體施工橋樑在溫度荷載作用下樑體繞橋墩支座髮生鏇轉，產生撓麯變形。為研究橋樑撓麯變形規律，進行瞭為期2年的鑑測。結果錶明：主跨中心、邊跨中心撓麯變形峰穀值分彆約為50，25 mm，形成瞭類似正絃麯線的撓麯變形形態；橋樑撓麯變形幅值與環境溫度具有高相關性。根據橋樑的撓麯變形特點製定瞭橋上無砟軌道軌麵調整方案，方案實施後效果良好。
호항고속철로일전체시공교량재온도하재작용하량체요교돈지좌발생선전，산생뇨곡변형。위연구교량뇨곡변형규률，진행료위기2년적감측。결과표명：주과중심、변과중심뇨곡변형봉곡치분별약위50，25 mm，형성료유사정현곡선적뇨곡변형형태；교량뇨곡변형폭치여배경온도구유고상관성。근거교량적뇨곡변형특점제정료교상무사궤도궤면조정방안，방안실시후효과량호。
The swing bridge deformation in Shanghai-Hangzhou high-speed railway occurred due to the rotation of the beams around bearings under temperature load. In this paper,a two-year deformation monitoring was carried out to study this deformation. The deflection was approximately a sine curve; the peak value in the mid-span for the main span and that for the side span were 50 mm and 25 mm, respectively. There was a high correlation between bridge deformation and surrounding temperature. According to the characteristic of the deflection curve,a rail surface adjustment plan for ballastless track on swing bridge wais proposed. The practical application proved effective.
