A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for determining angle of cable guide pipe of segmental precast concrete cable-stayed bridge
The invention relates to a method for determining the angle of a cable guide pipe of a segmental precast concrete cable-stayed bridge. The method comprises the following steps of: establishing a finite element model under a field coordinate system according to structural parameters of the segmental precast concrete cable-stayed bridge; determining a first angle correction value according to the angle change of the cable guide pipe caused by the construction pre-camber; determining a second angle correction value according to the angle change of the cable guide pipe caused by the vertical displacement; determining a third angle correction value according to the angle change of the cable guide pipe caused by the longitudinal displacement; determining a fourth angle correction value according to the angle change of the cable guide pipe caused by the sag effect; according to the initial mounting angle of the cable guide pipe and all the angle correction values, determining the mounting angle of the cable guide pipe in an on-site coordinate system; and determining the mounting angle of the cable guide pipe in the prefabricated coordinate system according to the included angle between the axis of a prefabricated linear middle beam section and the horizontal axis of the on-site coordinate system and the mounting angle of the cable guide pipe in the on-site coordinate system. According to the method, the mounting angle of the cable guide pipe of the segmental precast concrete cable-stayed bridge can be accurately positioned.
本发明涉及一种节段预制混凝土斜拉桥索导管角度的确定方法，包括根据节段预制混凝土斜拉桥的结构参数，建立在现场坐标系下的有限元模型；根据施工预拱度引起的索导管角度变化，确定第一角度修正值；根据竖向位移引起的索导管角度变化，确定第二角度修正值；根据纵向位移引起的索导管角度变化，确定第三角度修正值；根据垂度效应引起的索导管角度变化，确定第四角度修正值；根据索导管初始安装角度及各角度修正值，确定索导管在现场坐标系下的安装角度；根据预制线形中梁段轴线与现场坐标系水平轴的夹角，和索导管在现场坐标系下的安装角度，确定索导管在预制坐标系下的安装角度。本发明可以精确定位节段预制混凝土斜拉桥索导管的安装角度。
Method for determining angle of cable guide pipe of segmental precast concrete cable-stayed bridge
The invention relates to a method for determining the angle of a cable guide pipe of a segmental precast concrete cable-stayed bridge. The method comprises the following steps of: establishing a finite element model under a field coordinate system according to structural parameters of the segmental precast concrete cable-stayed bridge; determining a first angle correction value according to the angle change of the cable guide pipe caused by the construction pre-camber; determining a second angle correction value according to the angle change of the cable guide pipe caused by the vertical displacement; determining a third angle correction value according to the angle change of the cable guide pipe caused by the longitudinal displacement; determining a fourth angle correction value according to the angle change of the cable guide pipe caused by the sag effect; according to the initial mounting angle of the cable guide pipe and all the angle correction values, determining the mounting angle of the cable guide pipe in an on-site coordinate system; and determining the mounting angle of the cable guide pipe in the prefabricated coordinate system according to the included angle between the axis of a prefabricated linear middle beam section and the horizontal axis of the on-site coordinate system and the mounting angle of the cable guide pipe in the on-site coordinate system. According to the method, the mounting angle of the cable guide pipe of the segmental precast concrete cable-stayed bridge can be accurately positioned.
本发明涉及一种节段预制混凝土斜拉桥索导管角度的确定方法，包括根据节段预制混凝土斜拉桥的结构参数，建立在现场坐标系下的有限元模型；根据施工预拱度引起的索导管角度变化，确定第一角度修正值；根据竖向位移引起的索导管角度变化，确定第二角度修正值；根据纵向位移引起的索导管角度变化，确定第三角度修正值；根据垂度效应引起的索导管角度变化，确定第四角度修正值；根据索导管初始安装角度及各角度修正值，确定索导管在现场坐标系下的安装角度；根据预制线形中梁段轴线与现场坐标系水平轴的夹角，和索导管在现场坐标系下的安装角度，确定索导管在预制坐标系下的安装角度。本发明可以精确定位节段预制混凝土斜拉桥索导管的安装角度。
Method for determining angle of cable guide pipe of segmental precast concrete cable-stayed bridge
一种节段预制混凝土斜拉桥索导管角度的确定方法
FU CHUNYU (author) / GAO ZHENFENG (author)
2021-11-05
Patent
Electronic Resource
Chinese
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