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Longitudinal movement closure construction method above double-rotation steel truss girder bridge railway yard
The invention discloses a longitudinal movement closure construction method above a double-rotation steel truss girder bridge railway yard. The method comprises the steps that single-side steel truss girders are longitudinally pre-biased and assembled; a protective trolley is installed at the closure front end of the steel truss girder; rotating the steel truss girder; the protection trolley moves to a closure opening; the steel truss girder on the longitudinal movable support moves longitudinally; closure construction and the like. The method has the advantages that the closure opening of the steel truss girder is in a single-connector mode, rod piece closure points are reduced, and the closure speed and closure precision can be more easily increased. Before the steel truss girder is rotated, the ends of the two side girders are respectively provided with a closed protection trolley, and after the steel truss girder is rotated, the two protection trolleys are pushed to the position of the closure to be connected into a whole, so that the closure is in a totally-closed state, and the operation safety of an existing railway in the construction process can be ensured. After rotation of the steel truss girder is finished, longitudinal pushing butt joint is achieved through a single-side girder body by means of the displacement amount of the longitudinal movable support, rapid closure can be achieved, and the period of construction above an existing railway is shortened.
一种双转体钢桁梁桥铁路站场上方纵移合龙施工方法。其包括单侧钢桁梁纵向预偏拼装；在钢桁梁的合龙前端安装防护小车；钢桁梁转体；防护小车移动至合龙口处；纵向活动支座上钢桁梁纵移；合龙施工等步骤。本发明效果：钢桁梁合龙口为单接口的形式，减少了杆件合龙点，更有利于加快合龙速度和合龙精度的控制。钢桁梁转体前在两侧梁端头各安装一台封闭防护小车，转体结束后先将两台防护小车推至合龙口处连接成整体，使合龙口处于全封闭的状态，可确保施工过程既有铁路的运营安全。钢桁梁转体结束后，通过单侧梁体利用纵向活动支座的位移量实现纵向顶推对接，可实现快速的合龙，减少在既有铁路上方施工的周期。
Longitudinal movement closure construction method above double-rotation steel truss girder bridge railway yard
The invention discloses a longitudinal movement closure construction method above a double-rotation steel truss girder bridge railway yard. The method comprises the steps that single-side steel truss girders are longitudinally pre-biased and assembled; a protective trolley is installed at the closure front end of the steel truss girder; rotating the steel truss girder; the protection trolley moves to a closure opening; the steel truss girder on the longitudinal movable support moves longitudinally; closure construction and the like. The method has the advantages that the closure opening of the steel truss girder is in a single-connector mode, rod piece closure points are reduced, and the closure speed and closure precision can be more easily increased. Before the steel truss girder is rotated, the ends of the two side girders are respectively provided with a closed protection trolley, and after the steel truss girder is rotated, the two protection trolleys are pushed to the position of the closure to be connected into a whole, so that the closure is in a totally-closed state, and the operation safety of an existing railway in the construction process can be ensured. After rotation of the steel truss girder is finished, longitudinal pushing butt joint is achieved through a single-side girder body by means of the displacement amount of the longitudinal movable support, rapid closure can be achieved, and the period of construction above an existing railway is shortened.
一种双转体钢桁梁桥铁路站场上方纵移合龙施工方法。其包括单侧钢桁梁纵向预偏拼装；在钢桁梁的合龙前端安装防护小车；钢桁梁转体；防护小车移动至合龙口处；纵向活动支座上钢桁梁纵移；合龙施工等步骤。本发明效果：钢桁梁合龙口为单接口的形式，减少了杆件合龙点，更有利于加快合龙速度和合龙精度的控制。钢桁梁转体前在两侧梁端头各安装一台封闭防护小车，转体结束后先将两台防护小车推至合龙口处连接成整体，使合龙口处于全封闭的状态，可确保施工过程既有铁路的运营安全。钢桁梁转体结束后，通过单侧梁体利用纵向活动支座的位移量实现纵向顶推对接，可实现快速的合龙，减少在既有铁路上方施工的周期。
Longitudinal movement closure construction method above double-rotation steel truss girder bridge railway yard
双转体钢桁梁桥铁路站场上方纵移合龙施工方法
LIU HUAN (author) / ZHANG HAICHENG (author) / DENG YANGUANG (author) / YUAN WANSHAN (author) / HAO XUPENG (author)
2023-01-31
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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