连续梁桥整体横向旋转复位技术
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摘要
基于摩擦阻荷原理,设计了一种新型平移复位装置,适用于空间狭小的柱墩支撑桥梁结构整体复位,复位过程中桥墩几乎无附加水平力。某曲线连续梁的横向复位实践表明:该复位装置具有良好的实用性,施工便捷,周期短、成本低;梁体旋转复位水平力随位移量逐渐增加,最大旋转复位等效摩阻系数应按照6%进行预估。
Based on the principle of frictional resistance, designed in the present paper is a new type of translation-resetting device, which can be used for the integral relocation of a bridge structure with small clearance on the piers, and in the process of relocation there is little additional horizontal force applied to the piers. The relocation practice of a certain curved continuous bridge shows that the relocation device has good practicability, being simple and convenient in construction, short in the cyclical period and lower in cost. The horizontal force of the rotation and relocation of the bridge body goes up with the increase in displacement, and the coefficient of the maximum equivalent frictional resistance should be estimated at 6%.
Based on the principle of frictional resistance, designed in the present paper is a new type of translation-resetting device, which can be used for the integral relocation of a bridge structure with small clearance on the piers, and in the process of relocation there is little additional horizontal force applied to the piers. The relocation practice of a certain curved continuous bridge shows that the relocation device has good practicability, being simple and convenient in construction, short in the cyclical period and lower in cost. The horizontal force of the rotation and relocation of the bridge body goes up with the increase in displacement, and the coefficient of the maximum equivalent frictional resistance should be estimated at 6%.
引文
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[2]黄新艺,陈彦江,李岩,等.曲率半径对曲线箱梁桥车辆荷载作用下冲击效应的影响[J].振动与冲击,2010(01):38-42
[3]吕宏奎,安群慧,王夷.某小半径连续曲线梁桥偏位成因分析及纠偏方案研究[J].世界桥梁,2013(02):80-83
[4]郭现收,吴二军,王芝云,等.连续箱型梁桥复位方案及可行性分析[J].低温建筑技术,2014,36(11):48-51
[5]邓娜,江长森,江凌乔.曲线钢箱梁多点横向顶推复位研究[J].重庆交通大学学报(自然科学版),2012,31(04):743-746
[6]袁新华,陈绪刚.摩擦阻荷原理在桥梁平移工程中的应用[J].结构工程师,2011,27(01):149-153
[7]中华人民共和国交通运输部.公路钢筋混凝土及预应力混凝土桥涵设计规范:JTG D62-2012 [S].北京:人民交通出版社,2012
[8]曾聪,陶忠,潘文,等.PTFE-不锈钢摩擦滑移隔震支座摩擦系数的影响因素研究[J].工程抗震与加固改造,2009,31(01):58-63