中国港珠澳大桥多角度锚箱加工工艺

Processing Technology of Multi-angle Anchor Box in Hong KongZhuhai-Macao Bridge of China

锚箱是斜拉桥的重要组成部分,通过锚箱将载荷传递到斜拉索上。以我国建成的港珠澳大桥为例,基于π型组焊件的三维分量新特点,从翻转、固定、角度测量等因素出发,设计制造了一套多角度翻转工作台,成功实现了多角度锚箱机加工。改进后的工艺使得加工精度提高了一倍以上,顺利通过了验收,为各种形式的斜拉桥锚箱制造开辟了新方法。

Anchor box, as an important part of cable-stayed bridge, its process design develops vigorously with the increasing technic and economic advantages of cable-stayed bridge. An example of newly built Hong Kong-Zhuhai-Macao Bridge of China is taken to analyze design and manufacture of a suite of multiangle roll-over table, which is based on new characteristics of 3D component of π-type welding part, and factors such as flipping, fixing and angle measurement, aiming at process of a multi-angle anchor box. Improved processing technology increases one time or more the precision, successfully passing the related acceptances, and opening up a new route for manufacture of various forms of anchor box for cable-stayed bridge.