自锚式斜拉-悬索桥体系转换施工关键技术研究

自锚式斜拉-悬索协作体系桥不仅设计困难,施工方面从空缆到成桥状态的体系转换过程非常复杂,需研究开发许多项关键技术。本文针对南平剑州大桥的吊索张拉这一关键技术开展研究,最终成功完成了该桥的体系转换,对同类大桥的体系转换施工有一定的借鉴意义。

Research of key construction technique of system transformation of self-anchored cable-stayed suspension bridge

For self - anchored cable - stayed suspension bridge, not only its design is difficuh, but also its system transformation, which is from main cable configuration state to completed bridge state, is very complicated, therefore many key construction techniques should be developed. In this paper, tensioning technique of suspenders of Nanping Jianzhou Bridge was investigated. Based on this research, the system transformation of this bridge was successfully realized, which could be used for reference for the system transformation construction of similar bridges to some extent.