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 doi:

DOI: 10.3724/SP.J.1249.2017.05482

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2017/34:5 PP.482-487

## Comparison of cable designs based on the distribution ratio between cable and beam of extra-dosed bridge

• Peng Jingrong 1   He Shuanhai 1   Li Yao 2
• 1.School of Highway, Chang'an University, Xi'an 710064, Shaanxi Province, P. R. China;
• 2.CCCC First Highway Consultants Co. Ltd, Xi'an 710075, Shaanxi Province, P. R. China

Abstract：
The formula of live load ratio between the cable and beam for the rigid system extra-dosed bridge is derived, and the concept of cable quantity is put forward for different cable layouts. For extra-dosed bridge, the larger the angle between cable and girder is (less than 54.74°), the more live load born by cables, so the ratio of radial layout is the maximum, then that of the fan-shaped layout, and the ratio of harp-shaped layout is the minimum. However, the length for three cable layouts is exactly opposite. Therefore, when the initial design of the extra-dosed bridge is completed, the most economical cable layout can be chosen based on the cable quantity. Finite element models of three cable layouts for an extra-dosed bridge are set up. The results show that in order to achieve the expected live load ratio between the cable and beam, the cable quantity for the radial cable layout is the least, followed by that of the fan-shaped layout which is 25% more than the cable quantity of the radial cable layout. The cable quantity of the harp-shaped layout is the most which is 81% more than that of the radial cable layout. The finite element analysis results are consistent with the calculated ones by the simplified formula with only a difference of 8%.

Key words：bridge engineering,extra-dosed bridge,cable layout,radial layout,fan-shaped layout,harp-shaped layout,distribution ratio,cable quantity

ReleaseDate：2017-10-20 02:07:30

[1] 朱刚.矮塔斜拉桥方案设计及分析研究[D].杭州:浙江大学,2008. Zhu Gang. Project design and analysis research of extra-dosed cable-stayed bridge[D].Hangzhou:Zhejiang University,2008.(in Chinese)

[2] 王静,吴庆,周亚运. 矮塔斜拉桥临时固结体系模拟方案研究[J].南京工程学院学报,2016,2(14):23-28. Wang Jing, Wu Qing, Zhou Yayun. Simulation research into temporary consolidation of extra-dosed cable-stayed bridges[J]. Journal of Nanjing Institute of Technology. 2016,2(14):23-28.(in Chinese)

[3] 刘昀,颜东煌.部分预应力混凝土斜拉桥设计的合理性分析[J].中外公路,2015,35(2):83-86. Liu Yun,Yan Donghuang. Rationality analysis of partial prestressed concrete cable stayed bridge[J]. Journal of China and Foreign Highway,2015,35(2):83-86.(in Chinese)

[4] 方秦汉.芜湖长江大桥[J].华中科技大学学报城市科学版,2002,19(1):1-3. Fang Qinhan. Wuhu Yangtze river bridge[J].Journal of Huazhong University of Science and Technology Urban Science Edition,2002,19(1):1-3.(in Chinese)

[5] 吴节松.宽幅矮塔斜拉桥的部分关键技术研究[D].合肥:合肥工业大学,2014. Wu Jiesong. Research on the key technology of the wide extra-dosed cable-stayed bridge[D].Hefei:Hefei Polytechnic University,2014.(in Chinese)

[6] 肖汝诚,卫璞,孙斌,等.大跨度部分地锚斜拉桥力学分析与参数研究[J].东南大学学报自然科学版,2013,43(5):1097-1103. Xiao Rucheng,Wei Pu,Sun Bing,et al. Mechanical analysis and parametric study of long-span partially earth-anchored cable-stayed bridge[J].Journal of Southeast University Natural Science Edition,2013,43(5):1097-1103.(in Chinese)

[7] 贺拴海.桥梁结构理论与计算方法[M].北京:人民交通出版社,2003. He Shuanhai. Theoretical and computational methods of bridge structure[M]. Beijing:China Communications Press,2003. (in Chinese)

[8] 王凌波,彭晶蓉,贺拴海. 预应力混凝土部分斜拉桥拉索与预应力筋分配比研究[J].中外公路,2016,36(5):110-114. Wang Lingbo,Peng Jingrong, He Shuanhai. Research on distribution ratio of cable and pre-stressing steel wire in pre-stressed concrete extra-dosed cable stayed bridges[J]. Journal of China and Foreign Highway,2016,36(5):100-104.(in Chinese)

[9] 彭晶蓉,贺拴海,王凌波. 基于模型试验的曲线部分斜拉桥施工过程模拟分析[J].铁道科学与工程学报,2016,13(11):2190-2197. Peng Jingrong, He Shuanhai,Wang Lingbo. Simulation and analysis of the curved extra-dosed bridge construction based on model test[J]. Journal of Railway Science and Engineering,2016,13(11):2190-2197.(in Chinese)

[10] 孙淑红.外倾索面PC箱梁部分斜拉桥受力性能研究[D].重庆:重庆交通大学,2012. Sun Shuhong. Behaviors of Pre-stressed concrete box girder for partially cable-stayed bridges with double outwardly inclined cable planes[D].Chongqing:Chongqing Jiaotong University,2012.(in Chinese)

[11] 杨庆国.矮塔斜拉桥布索方式计算研究[J].交通标准化,2009,9(19):63-67. Yang Qingguo. Disposition of cable in extra-dossed cable-stayed bridge[J]. Transport Standardization,2009,9(19):63-67.(in Chinese)

[12] 刘昊苏.不同布索形式下曲线矮塔斜拉桥静动力性能研究[D].北京:北京建筑大学,2013. Liu Haosu.The Investigation ion the static and dynamic behaviors of the curved extra-dosed cable-stayed bridges with different cable-styles[D].Beijing:Beijing Architecture University,2013.(in Chinese)

[13] 张力文,夏睿杰,肖汝诚,等.部分地锚式斜拉桥合理成桥状态二阶段确定法[J].深圳大学学报理工版,2012,29(1):51-55. Zhang Liwen,Xia Ruijie, Xiao Rucheng, et al.The two-stage method to determine the reasonable completed status of partially earth-anchored cable-stayed bridge[J]. Journal of Shenzhen University Science and Engineering,2012,29(1)51-55.(in Chinese)

[14] 赵晓晋,贺拴海,白鹭涛. 双塔斜拉-连续梁组合体系的力学行为分析[J].深圳大学学报理工版,2016,33(5):492-500. Zhao Xiaojin,He Shuanhai,Bai Lutao.Mechnical behavior analysis of double-pylon cable-stayed-continuous beam combination system[J].Journal of Shenzhen University Science and Engineering,2016,33(5):492-500.(in Chinese)

[15] 杨飞.山区曲线部分斜拉桥结构体系与结构性能研究[D].西安:长安大学, 2011. Yang Fei.Study for structure system and structure performance of curve extra-dosed cable-stayed bridges in the mouritairis[D].Xi'an:Chang'an University,2011.(in Chinese)

[16] 赵晓晋,贺拴海,李源,等.斜拉桥前支点挂篮施工过程模拟分析[J].深圳大学学报理工版,2017,34(2):138-146. Zhao Xiaojin, He Shuanhai, Li Yuan, et al. Process simulation of fore fulcra form traveller construction for cable-stayed bridge[J]. Joumal of Shenzhen University Science and Engineering,2017,34(2):138-146.(in Chinese)

[17] 黄汪胜.大跨预应力连续箱梁桥矮塔斜拉加固布索方式.研究[D].南京:南京航空航天大学,2011. Huang Wangsheng. Research on cable arrangements of long-span pre-stressed continuous box girder bridge with low tower cable-stayed reinforcement[D].Nanjing:Nanjing University of Aeronautics and Astronautics.(in Chinese)

[18] 陈爱军,邵旭东,李立峰,等.无背索竖琴式斜拉桥拉索索力敏感性分析[J].华东公路,2008,31(4):3-6. Chen Aijun, Shao Xudong, Li Lifeng, et al. Cable force sensitivity analysis of cable stayed bridge without back cable[J]. East China Highway,2008,31(4):3-6.(in Chinese)

[19] 兰彬.背索布索方式对独塔斜拉桥结构性能影响分析[D].西安:长安大学, 2011. Lan Bin.Analysis on structure performance of single inclined pylon cable-stayed bridge under different kinds of back-stay's cable layout[D].Xi'an:Chang'an University,2011.(in Chinese)

[20] 陈从春. 矮塔斜拉桥设计理论核心问题研究[D]. 上海:同济大学,2006. Chen Congchun. Study on major problems for design theory of extra-dosed cable-stayed bridges[D]. Shanghai:Tongji University,2006.(in Chinese)

[21] 吴益炳,陈仕刚.部分斜拉桥索梁活载比计算公式的推导[J]公路,2016,61(11):144-148. Wu Yibing,Chen Shigang. The formula derivation about distribution ratio of live load between cable and beam in extra-dosed cable-stayed bridge[J].Highway,2016,61(11):144-148.(in Chinese)

[22] 刘凯.曲线部分斜拉桥的几个设计参数研究[D].西安:长安大学,2013. Liu Kai. Study on several design parameters of curve extra-dosde cable-stayed bridge[D].Xi'an:Chang'an University,2013.(in Chinese)

[23] 杨可. 矮塔斜拉桥动力特性及地震响应分析[D]大连:大连海事大学,2016. Yang Ke. Research on dynamic behavior and seismic response of extra-dosed cable-stayed bridges[D]Dalian:Dalian Maritime University,2016.(in Chinese)

[24] 毕树兵.矮塔斜拉桥墩顶不平衡转体施工关键技术研究[J].公路交通科技,2011,7(12):238-241. Bi Shubing. Research on unbalanced swivel construction of extra-dosed cable-stayed bridges[J]. Journal of Highway and Transportation Research and Development,2011,7(12):238-241.(in Chinese)