【作者】 张龙； 李全旺； 林道锦； 颜智法；

【Author】 ZHANG Long;LI Quan-wang;LIN Dao-jin;YAN Zhi-fa;Department of Civil Engineering, Tsinghua University;CCCC Highway Consultants Co., Ltd;

【机构】 清华大学土木工程系； 中交公路规划设计研究院；

【摘要】 成桥状态下空间主缆悬索桥的主缆线形,在竖直平面与水平平面内相互耦合,主缆线形计算复杂。该文将空间主缆线形分解为竖直平面与水平平面内线形,基于等代梁法和理想柔性索的变形规律,提出空间缆索悬索桥成桥状态线形的求解方法,并给出了详细计算流程。该方法较传统的分段悬链线法具有推导简单、物理概念清晰、收敛速度快的优点。通过与杭州江东大桥实测结果对比,验证了本文方法和程序的准确性。更多还原

【Abstract】 The shape for spatial suspension bridge cable at cable-finished stage is coupled in the vertical plane and horizontal plane, making it complex to determinating the spatial shape of the cable. In this paper, the spatial cable is projected to the the vertical plane and horizontal plane, and based on the equivalent beam method and the deformation of ideal flexible cable under concentrated forces, an approach is developed to determinate the spatial shape of suspension bridges at cable-finished stage, and the detailed computing flow chart and process are also presented. Compared with the traditional segmental catenary method, the appoach developed in this paper is much easier to derive, and has a clearer physical concept, and the program based on this method is easier to converge. By comparing the computing results of this program with the inspection data of Hangzhou Jiangdong Bridge, the accuracy of this program is verified.更多还原