多跨連續(xù)梁獨塔斜拉協(xié)作體系橋梁結構參數分析
戴利民
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(同濟大學建筑設計研究院,上海 200092)[摘要]從協(xié)作體系的結構狀態(tài)和一些重要的設計參數著手,研究多跨連續(xù)獨塔斜拉協(xié)作體系橋梁的塔、梁、索受力特征及位移形態(tài),分析主跨無索區(qū)長度、主梁高跨比、主邊跨比及塔的高跨比等設計參數變化對結構所產生的影響,并提出合理的取值范圍。
[關鍵詞]獨塔;協(xié)作體系;斜拉橋;無索區(qū)長度;主梁高跨比;主邊跨比;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
作者簡介:戴利民(1965-),高級工程師,從事橋梁結構設計。參考文獻[1]公路斜拉橋設計細則(JTG/T D65—01—2007)[S].北京:人民交通出版社,2007.[2]戴利民.協(xié)作體系斜拉橋的研究[D].上海:同濟大學,1998