斜拉扣挂缆索吊装系统全过程仿真分析研究
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摘要
在拱桥的斜拉扣挂缆索吊装施工中缆扣一体化已成为发展趋势,但目前受限于分析手段的限制数值仿真技术还无法完整地模拟其施工过程,以致对该系统全过程的力学特性还缺乏深入的了解。为此本文以杭州市金昌路桥施工为背景提出了在斜拉扣挂模型基础上引入缆索单元进行全过程仿真分析的计算方法,并以通用有限元软件内置的摩擦接触行为为基础提出了可精确模拟主缆与索鞍相互作用的仿真方法和全过程仿真模型,该模型能够仿真整个施工过程中缆-拱-索-塔各构件的力学状态,为结构设计和结构安全提供更加可靠地依据,同时该方法对于提高悬索桥施工模拟、预应力体外束张拉等工艺的仿真技术有着重要的借鉴意义。
The integration of cable buckles in the construction of cable-stayed cable slings of arch bridges has become a development trend,but the numerical simulation technology limited by the analytical means is still unable to fully simulate the construction process.As a result,there is still a lack of in-depth understanding of the mechanical properties of the entire process.In this paper,based on the construction of Jinchang Road Bridge in Hangzhou,the calculation method of the whole process simulation analysis based on the cable-stayed suspension model was proposed.Based on the friction contact behavior built in the general finite element software,a simulation method and a full-process simulation model for accurately simulating the interaction between the main cable and the cable saddle are proposed.The model can simulate the mechanical state of the cable-arch-rope-tower components during the whole construction process,providing a more reliable basis for structural design and structural safety.At the same time,the method is used to improve the suspension bridge construction simulation,prestressing external beam tensioning and other processes.The simulation technology has important reference significance.
The integration of cable buckles in the construction of cable-stayed cable slings of arch bridges has become a development trend,but the numerical simulation technology limited by the analytical means is still unable to fully simulate the construction process.As a result,there is still a lack of in-depth understanding of the mechanical properties of the entire process.In this paper,based on the construction of Jinchang Road Bridge in Hangzhou,the calculation method of the whole process simulation analysis based on the cable-stayed suspension model was proposed.Based on the friction contact behavior built in the general finite element software,a simulation method and a full-process simulation model for accurately simulating the interaction between the main cable and the cable saddle are proposed.The model can simulate the mechanical state of the cable-arch-rope-tower components during the whole construction process,providing a more reliable basis for structural design and structural safety.At the same time,the method is used to improve the suspension bridge construction simulation,prestressing external beam tensioning and other processes.The simulation technology has important reference significance.
引文
[1] 孔莉.斜拉扣挂缆索吊装法施工技术研究[J].黑龙江科技信息,2013(32):204-204.Kong Li.Study on the construction technology of cable-stayed suspension system[J].Heilongjiang Science and Technology Information,2013(32):204-204.(in Chinese)
[2] 吴进明.缆索吊装斜拉扣挂法在钢管混凝土拱桥施工中的应用[J].宁夏工程科技,2007,6(1):57-60.Wu Jinming.Application of cable erection and stayed knotting method to construcion of concrete filled steel tubular arch bridge[J].Ningxia Engineering Technology,2007,6(1):57-60.(in Chinese)
[3] 王国俊.大跨度钢管混凝土拱桥无支架缆索吊装过程中的仿真计算分析[D].长沙:长沙理工大学,2005.Wang Guojun.The method of simulation calculation in the stages of raw support cable hoisting of long-span CFST arch bridge[D].Changsha:Changsha University of Science & Technology,2005.(in Chinese)
[4] 秦斌.拱桥斜拉扣挂施工中的扣索索力优化研究[D].重庆:重庆交通大学,2011.Qin Bin.Buckle cable force optimization study of arch bridge in the buckle hang construction[D].Chongqing:Chongqing Jiaotong University,2011.(in Chinese)
[5] 肖伟.超大跨度钢管混凝土拱桥施工过程中扣索索力计算方法研究[D].重庆:重庆交通大学,2011.Xiao Wei.Reaserch on cable force calculation methods cor construction of super long-span CFST arch bridge[D].Chongqing:Chongqing Jiaotong University,2011.(in Chinese)
[6] 范立础,潘永仁.大跨度悬索桥结构架设参数精细算法研究[J].土木工程学报,1999,32(6):20-25.Fan Lichu,Pan Yongren.Study on the fine method of calculating the erection-parameters of long-span suspension bridges[J].China Civil Engineering Journal,1999,32(6):20-25.(in Chinese)
[7] 魏建东,刘忠玉.具有滑移式散索鞍的悬索桥主缆架设分析[J].计算力学学报,2005,22(6):755-761.Wei Jiandong,Liu Zhong Yu.Calculation of cable erection in suspension bridge with sliding saddles[J].Chinese Journal of Computational Mechanics,2005,22(6):755-761.(in Chinese)
[8] 魏建东.悬索桥结构分析中的索-鞍座单元[J].计算力学学报,2006,23(3):348-352.Wei Jiandong.Cable-saddle element in finite element analysis of suspension bridge[J].Chinese Journal of Computational Mechanics,2006,23(3):348-352.(in Chinese)
[9] 齐东春,沈锐利.悬索桥结构分析中鞍座单元的研究及应用[J].桥梁建设,2011(1):35-38.Qi Dongchun,Shen Ruili.Reasearch and application of saddle elements in structural analysis of suspension bridge[J].Brigde Construction,2011(1):35-38.(in Chinese)
[10] 齐东春,沈锐利.悬索桥有限元计算的三节点空间鞍座单元[J].西南交通大学学报,2014,49(6):942-947.Qi Dongchun,Shen Ruili.3-Node sptial saddle element for finite element calculation of suspension bridge [J].Journal of Southwest Jiaotong University,2014,49(6):942-947.(in Chinese)
[11] 潘永仁,范立础.悬链线单元在悬索桥主缆下料长度计算中的应用[J].结构工程师,1998(3):20-24.Pan Yongren,Fan Lichu.Application of catenary element to calculating the fabrication length of the main cable of suspension bridges[J].Structural Engineering,1998(3):20-24.(in Chinese)
[12] 杨文爽.大跨度钢管混凝土拱桥无支架缆索吊装系统研究[D].长沙:长沙理工大学,2004.Yang Wenshuang.Research on the cable-hositing system without supporting fame of CFST arch bridge[D].Changsha:Changsha University of Science & Technology,2004.(in Chinese)
[2] 吴进明.缆索吊装斜拉扣挂法在钢管混凝土拱桥施工中的应用[J].宁夏工程科技,2007,6(1):57-60.Wu Jinming.Application of cable erection and stayed knotting method to construcion of concrete filled steel tubular arch bridge[J].Ningxia Engineering Technology,2007,6(1):57-60.(in Chinese)
[3] 王国俊.大跨度钢管混凝土拱桥无支架缆索吊装过程中的仿真计算分析[D].长沙:长沙理工大学,2005.Wang Guojun.The method of simulation calculation in the stages of raw support cable hoisting of long-span CFST arch bridge[D].Changsha:Changsha University of Science & Technology,2005.(in Chinese)
[4] 秦斌.拱桥斜拉扣挂施工中的扣索索力优化研究[D].重庆:重庆交通大学,2011.Qin Bin.Buckle cable force optimization study of arch bridge in the buckle hang construction[D].Chongqing:Chongqing Jiaotong University,2011.(in Chinese)
[5] 肖伟.超大跨度钢管混凝土拱桥施工过程中扣索索力计算方法研究[D].重庆:重庆交通大学,2011.Xiao Wei.Reaserch on cable force calculation methods cor construction of super long-span CFST arch bridge[D].Chongqing:Chongqing Jiaotong University,2011.(in Chinese)
[6] 范立础,潘永仁.大跨度悬索桥结构架设参数精细算法研究[J].土木工程学报,1999,32(6):20-25.Fan Lichu,Pan Yongren.Study on the fine method of calculating the erection-parameters of long-span suspension bridges[J].China Civil Engineering Journal,1999,32(6):20-25.(in Chinese)
[7] 魏建东,刘忠玉.具有滑移式散索鞍的悬索桥主缆架设分析[J].计算力学学报,2005,22(6):755-761.Wei Jiandong,Liu Zhong Yu.Calculation of cable erection in suspension bridge with sliding saddles[J].Chinese Journal of Computational Mechanics,2005,22(6):755-761.(in Chinese)
[8] 魏建东.悬索桥结构分析中的索-鞍座单元[J].计算力学学报,2006,23(3):348-352.Wei Jiandong.Cable-saddle element in finite element analysis of suspension bridge[J].Chinese Journal of Computational Mechanics,2006,23(3):348-352.(in Chinese)
[9] 齐东春,沈锐利.悬索桥结构分析中鞍座单元的研究及应用[J].桥梁建设,2011(1):35-38.Qi Dongchun,Shen Ruili.Reasearch and application of saddle elements in structural analysis of suspension bridge[J].Brigde Construction,2011(1):35-38.(in Chinese)
[10] 齐东春,沈锐利.悬索桥有限元计算的三节点空间鞍座单元[J].西南交通大学学报,2014,49(6):942-947.Qi Dongchun,Shen Ruili.3-Node sptial saddle element for finite element calculation of suspension bridge [J].Journal of Southwest Jiaotong University,2014,49(6):942-947.(in Chinese)
[11] 潘永仁,范立础.悬链线单元在悬索桥主缆下料长度计算中的应用[J].结构工程师,1998(3):20-24.Pan Yongren,Fan Lichu.Application of catenary element to calculating the fabrication length of the main cable of suspension bridges[J].Structural Engineering,1998(3):20-24.(in Chinese)
[12] 杨文爽.大跨度钢管混凝土拱桥无支架缆索吊装系统研究[D].长沙:长沙理工大学,2004.Yang Wenshuang.Research on the cable-hositing system without supporting fame of CFST arch bridge[D].Changsha:Changsha University of Science & Technology,2004.(in Chinese)
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