多跨连续梁独塔斜拉协作体系桥梁结构参数分析
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(同济大学建筑设计研究院,上海 200092)[摘要]从协作体系的结构状态和一些重要的设计参数着手,研究多跨连续独塔斜拉协作体系桥梁的塔、梁、索受力特征及位移形态,分析主跨无索区长度、主梁高跨比、主边跨比及塔的高跨比等设计参数变化对结构所产生的影响,并提出合理的取值范围。
[关键词]独塔;协作体系;斜拉桥;无索区长度;主梁高跨比;主边跨比;塔高跨比Structural Parameter Analysis of Multi-span Continuous Girder SinglePylon Cable Stayed Bridge Cooperative SystemDai Limin(Architectural Design and Research Institute of Tongji University,Shanghai 200092,China)
Abstract:Based on cooperative structural system and several important design parameter,a research of continuous span single pylon cable stayed bridge cooperative system is done for bridge tower,girder and cable force resistance-displacement characteristic. The analysis was done for main girder unsupported span,depth-span ratio of girder,main-side span ratio,pylon height to girder span ratio,etc. to see how the changes in design parameter will affect the structure. At last a reasonable value range is proposed.Keywords:single tower;cooperative system;cable stayed bridge;unsupported span;girder depth-span ratio;main-side span ratio;pylon height to girder span ratio
作者简介:戴利民(1965-),高级工程师,从事桥梁结构设计。参考文献[1]公路斜拉桥设计细则(JTG/T D65—01—2007)[S].北京:人民交通出版社,2007.[2]戴利民.协作体系斜拉桥的研究[D].上海:同济大学,1998