Abstract: In this paper , the main cables are simplified to uniform loads along arc direction and concentrated loads at suspension points according to suspension bridge structures. Catenary is the linetype of main cables between slings, and the linetype at a suspension point is decided by equation of equilibrium of forces and equation of compatibility of displacement. So the main cable linetype of suspension bridges is subsection catenary. According to this theory, the reliable accurate method is constituted to calculate construction sequences and linetype after construction, and the software Sgkz2000 based on Win32 is achieved. Calculation theory and method are introduced together with software development process in this paper.

Key words: suspension bridge, construction control, structural linetype, software development

摘要： 按悬索桥的实际情况将主缆简化为受沿弧长均布荷载和吊点的集中荷载,主缆在吊索之间的线形为悬链线,在吊点处的线形则根据力学平衡条件和变形相容条件加以确定,因此悬索桥的主缆线形为分段悬链线.据此理论建立了一套悬索桥主缆成桥线形和施工过程计算的精确方法,并开发了真正的Win32软件Sgkz2000,笔者对其计算原理、方法和软件开发情况加以介绍.

关键词: 悬索桥, 施工控制计算, 结构线形, 软件开发