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| 弯箱梁桥各种荷载应力与自重应力之比的研究 | |
| 引用本文： | 宋国华,石志晓,罗玲,霍达,王东炜.弯箱梁桥各种荷载应力与自重应力之比的研究[J].河南科学,2009(5). |
| 作者姓名： | 宋国华 石志晓 罗玲 霍达 王东炜 |
| 作者单位： | 1. 郑州大学,土木工程学院,郑州,450001: 2. 北京市政工程设计研究总院,北京,100045;北京工业大学,建筑工程学院,北京,100022 3. 北京工业大学,建筑工程学院,北京,100022 |
| 摘 要： | 以桥长和圆心角为参数建立了30个二等跨连续弯箱梁桥模型,拟合出跨中和支座处不同荷载单独作用时的控制截面角点上的正应力与自重正应力之比(自比重)随圆心角(或桥长)的关系曲线,并对这些自比重曲线进行详细讨论,总结出各种荷载自比重随2参数的变化规律,对工程设计提出建议和借鉴依据. |
| 关 键 词： | 弯箱梁桥 荷载应力 比重 圆心角 桥长 |
Study on Ratios of Effects of Different Loads to Gravity on Curved Box-Girder Bridges |
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| Song Guohua,Shi Zhixiao,Luo Ling,Huo Da,Wang Dongwei.Study on Ratios of Effects of Different Loads to Gravity on Curved Box-Girder Bridges[J].Henan Science,2009(5). | |
| Authors: | Song Guohua Shi Zhixiao Luo Ling Huo Da Wang Dongwei |
| Institution: | 1.School of Civil Engineering;Zhengzhou University;Zhengzhou 450001;China;2.Beijng Municipal Engineering Design and Research Institute;Beijing 100022;3.College of Architectural Engineering;Beijing University of Technology;Beijing 100045;China |
| Abstract: | 30 two-span curved box-girder bridge models were built taking bridge length and central angle as parameters.Ratio curves of load stresses of different loads to gravity of corner points in control sections,such as sections in middle span and in support,were fitted to bridge length and central angle,and were discussed in detail;Rules about ratios were concluded,and advices were made for engineering design in the end. |
| Keywords: | curved box-girder bridge load stress ratio central angle bridge length |
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