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矮塔混凝土斜拉桥成桥索力优化 预览 被引量:9

Optimization of bridge-completing cable force for extradosed concrete cable-stayed bridges
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摘要 针对矮塔混凝土斜拉桥结构受力特点,推导出了在恒载、车辆荷载、温度作用下整体弯曲能量表达式.以结构整体弯曲变形能最小为目标,主梁主塔单元弯矩和轴力为约束条件,应用MIDAS/CIVIL2010的未知荷载系数模块进行了最不利荷载组合作用下矮塔混凝土斜拉桥成桥索力优化计算分析.讨论了车辆荷载和温度作用对矮塔斜拉桥成桥索力优化结果及大桥结构内力分布的影响.研究结果表明,车辆荷载和温度作用对拉索索力、主梁弯矩等力学参数的影响较大,在进行成桥索力优化时应该考虑车辆荷载和温度作用. Aiming at the loading behavior of extradosed concrete cable-stayed bridges ( ECCB), the global bending energy equation of the structure under the effects of dead load, vehicle load and tem- perature is deduced. Taking the minimum global bending energy as a target and the moments and ax- ial forces of main girder and tower elements as restriction conditions, the optimization of bridge- completing cable force for ECCB is carried out under the most unfavorable combination of the loads by the unknown load coefficient module in MIDAS/CIVIL 2010. The influences of vehicle load and temperature on the optimal results of bridge-completing cable force for ECCB and the distribution of bridge internal force are discussed. The results show that the vehicle load and temperature have a considerable effect on the cable tension, the moment of main girder and other mechanical parame- ters. Thus, the vehicle load and temperature should be taken into consideration in the optimization of bridge-completing cable force.
作者 缪长青 王义春 黎少华 Miao Changqing Wang Yichun Li Shaohua (School of Civil Engineering, Southeast University, Nanjing 210096, China)
出处 《东南大学学报:自然科学版》 EI CAS CSCD 北大核心 2012年第3期 526-530,共5页 Journal of Southeast University(Natural Science Edition)
基金 “十一五”国家科技支撑计划重点资助项目(2009BAG15B03)、国家自然科学基金资助项目(51078080).
关键词 影响矩阵 索力优化 车辆荷载 温度作用 influence matrix cable force optimization vehicle load temperature effect
作者简介 缪长青(1963-),男,博士,副教授,chqmiao@163.com.
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参考文献12

  • 1陈亨锦,王凯,李承根.浅谈部分斜拉桥[J].桥梁建设,2002(1):44-47. 被引量:90
  • 2张大伟..矮塔斜拉桥索力优化方法的研究 [D].西南交通大学,2009:
  • 3Chen D W,Tham L G,Lee P K K,et al.Determination of initial cable forces in prestressed concrete cable-stayed bridges for given deck profiles using the force equilibrium method[J].Computers and Structures,2000,74(1):1-9. 被引量:1
  • 4Sung Y C,Chang D W,Teo E H.Optimum post-tensioning cable forces of Mau-Lo Hsi cable-stayed bridge[J].Engineering Structures,2006,28(10):1407-1417. 被引量:1
  • 5肖汝诚,项海帆.斜拉桥索力优化的影响矩阵法[J].同济大学学报:自然科学版,1998,26(3):235-240. 被引量:149
  • 6李宇,陈少峰.峪道河矮塔斜拉桥拉索初张力优化[J].科学技术与工程,2010(17):4312-4315. 被引量:4
  • 7Simoes L M C,Negrao J H J O.Optimization of cable-stayed bridges with box-girder decks [J].Adv Eng Software,2000,31(6):417-423. 被引量:1
  • 8Kim K S,Lee H S.Analysis of target configurations under dead loads for cable-supported bridges[J].Computers and Structures,2001,79(29/30):2681-2692. 被引量:1
  • 9Janjic D,Pircher M,Pircher H.Optimization of cable tensioning in cable-stayed bridges[J].Bridge Eng ASCE,2003,8(3):131-137. 被引量:1
  • 10Baldomir A,Hernandez S,Nieto F,et al.Cable optimization of a long span cable stayed bridge in La Coruna(Spain)[J].Advances in Engineering Software,2010,41(7/8):931-938. 被引量:1

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