上跨中低速磁浮营业线的桥梁方案研究

Research on Bridge Scheme with Upper-span Low-medium Speed Maglev Business Line

鉴于运营过程中中低速磁浮营业线产生的电磁环境会对上跨桥梁结构以及施工设备或人员产生一定影响,同时二者交叉点附近的既有结构、构筑物、交通环境等会对上跨桥梁方案造成极大的制约。基于现有理论研究及实践结果,通过对长沙机场大道与长沙磁浮快线的交叉节点进行分析,确定了距离磁浮轨道的最小安全施工距离,制定了桥梁上跨方案并验证了该方案的科学性和可行性。通过在方案制定过程中对风险的控制和不利社会影响的规避、实施过程中的试验和监测以及运营过程中的反馈,归纳总结了上跨中低速磁浮营业线桥梁的主要影响因素以及切实可行的对策措施,以期为类似桥梁上跨方案提供参考。

During the operation,the electromagnetic environment generated by low-medium speed maglev business line will have a certain impact on the bridge structure of the upper-span maglev track,construction equipment and personnel.While the existing structures,buildings and traffic environment near the intersection will greatly restrict the scheme of the upper-span bridge.Based on the existing theoretical research and practice,the intersection of Changsha Airport Avenue and Changsha Maglev Express line was analyzed,the minimum safe construction distance of the maglev track was determined,the upper-span scheme was formulated and the scientificity and feasibility of the scheme was verified in this paper.Through risk control and avoidance of adverse social impact in the process of plan making,experiment and monitoring in the process of implementation and feedback in the process of operation,the main influencing factors and feasible countermeasures were summarized,which was looked forward to provide reference for similar projects.