铁道科学与工程学报2018，Vol.15Issue(5)：1224-1230,7.
多塔矮塔斜拉桥结构参数敏感性分析
Analysis of structural parameters of multi-span extra-dosed cable-stayed bridge
摘要
Abstract
Based on the perturbation principle, a Multi-tower extradosed cable-stayed bridge was conducted to study the influence of structure parameters on internal force, deflection and vibration characteristic by choosing the appropriate perturbation values and calculating the sensitivity coefficients. The calculation results show that the side span length, girder stiffness and pier stiffness largely affect the structural stiffness and internal force. The change of the cable stiffness and the length without cable in mid-span have little effect on structural internal force. The tower-span ratio, cable stiffness and girder stiffness are the main factors affecting the cable force. The girder and pier stiffness, side span length of the girder affect the vibration mode of the girder greatly. The tower-span ratio and the stiffness of pylon have great influence on the mode of pylon vibration. The conclusions of this paper can provide reference for structural design and construction monitoring.关键词
矮塔斜拉桥/结构参数/敏感性分析/敏感系数Key words
extradosed cable-stayed bridge/structural parameters/sensitivity analysis/sensitivity coefficient分类
交通工程引用本文复制引用
刘榕,伍英,丁延书,罗浩..多塔矮塔斜拉桥结构参数敏感性分析[J].铁道科学与工程学报,2018,15(5):1224-1230,7.基金项目
湖南省交通厅科技进步与创新资助项目(201426) （201426）
