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提出了大跨度斜拉桥分析软件的总体架构,并着重阐述了分析软件研发中的几个关键问题。采用薄壁剪力流计算原理分析复杂薄壁箱梁截面的扭转常数;采用悬链线理论推导长索的初始预张力水平;综合考虑斜拉索垂度效应、梁柱效应和大位移效应,实现大跨钢斜拉桥施工过程线形控制。该计算理论和软件架构是大跨度斜拉桥分析软件——BINAS的设计依据,苏通大桥的计算实例表明了此方法的精确性和可靠性。
The overall architecture of long-span cable-stayed bridge analysis software is put forward, and several key problems in the development of analysis software are emphatically expounded. The torsional constant of section of thin-walled box girder with thin-walled shear flow was analyzed. The initial pre-tension of long-haul cable was deduced by catenary theory. Considering the dip effect of cable, beam-column effect and large displacement effect, Realization of Linear Control of Construction Process of Long Span Steel Cable - Stayed Bridge. The calculation theory and software architecture are the design basis of BINAS, a large-span cable-stayed bridge analysis software. The calculation example of Sutong Bridge shows the accuracy and reliability of this method.