姜早龙1,2,4,刘晓君1,金波2,张志军3,刘正波2,赵嘉祺2,李园2.强电、强磁场对钢箱梁跨越磁浮快线轨道 顶推落梁施工的影响[J].湖南大学学报:自然科学版,2019,(11):164~171
强电、强磁场对钢箱梁跨越磁浮快线轨道 顶推落梁施工的影响
Influence of Steel Electromagnetic Field on Pushing and FallingConstruction of Steel Box Girder over Maglev Track
  
DOI:
中文关键词:  钢箱梁  顶推施工  有限元  电场  磁场
英文关键词:steel box girder  pushing construction  finite element  electric field  magnetic field
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作者单位
姜早龙1,2,4,刘晓君1,金波2,张志军3,刘正波2,赵嘉祺2,李园2 (1. 西安建筑科技大学 土木工程学院陕西 西安 7100552. 湖南大学 土木工程学院湖南 长沙 410082 3. 中铁七局集团第三工程有限公司陕西 西安 7100324. 湖南湖大建设监理有限公司湖南 长沙 410082) 
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中文摘要:
      中低速磁浮快线轨道通电时会使周围的电场和磁场发生强烈的变化,形成强电、强磁场效应,是上跨磁浮快线轨道钢箱梁顶推及落梁施工的重大安全隐患. 以长沙黄花国际机场大道工程为案例,研究强电、强磁场对钢箱梁跨越磁浮快线轨道顶推落梁施工的影响. 采用大型有限元分析软件ANSOFT,对磁浮快线轨道产生的强电、强磁场进行有限元分析及数值计算,假定钢箱梁推进过程中磁浮轨道电流保持不变,通过改变钢箱梁相对于轨道的位置,研究不同工况下强电、强磁场对钢箱梁顶推落梁产生的影响,并对每一个工况进行静态分析及计算,得出相应的施工安全范围,为今后类似工程提供具有参考价值的理论和经验.
英文摘要:
      The surrounding electromagnetic fields will be changed greatly when the track of medium and low speed maglev is electrified. The generated effect of strong electromagnetic field has a great impact on the safety of the pushing and falling of the steel box girder over the maglev track.Therefore,taking the construction of Changsha Huanghua International Airport Avenue Project as a practical case,the impact of electromagnetic field on the pushing and falling of the steel box girder over the maglev track is studied.The large finite element analysis software ANSOFT is used to perform finite element analysis and numerical calculation on the strong electromagnetic field of the maglev track.It is assumed that the current of the maglev track remains constant during the advancement of the steel box girder. By changing the position of the steel box girder relative to the track,the impact of the strong electromagnetic field generated by the maglev track on the launching and falling of the steel box girder under the different working conditions is studied. After performing the static analysis and calculation for each working condition,the corresponding construction safety scope is obtained. The conclusion of the study provides references and suggestions for similar projects in the future.
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