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研究目的:针对深圳地铁3号线高架线路比重大的特点,提出高架线路应重点研究的几个课题,以解决高架线路设计关键技术问题。研究方法:结合城市规划、高架线周边环境、结构体系等进行综合技术对比分析。研究结果:通过深圳地铁3号线高架线路设计中对高架桥梁、车站站台型式、减震降噪等课题的研究,探索城市轨道交通高架线路设计的经验和相关技术措施。研究结论:城市轨道交通高架桥梁的选型除满足结构受力要求外,还应结合城市规划、城市景观统一考虑,通常应选择箱形梁。高架车站站台的型式从运营、体量等方面考虑,一般宜选择岛式站台。高架线路的减震降噪要从结构、轨道、声屏障等方面采用综合措施。
Research purposes: According to the characteristics of large proportion of overhead lines in Shenzhen Metro Line 3, several issues that should be focused on elevated lines are proposed to solve the key technical issues in the design of overhead lines. Research Methods: Combining with urban planning, the surrounding environment of elevated line, structural system and other comprehensive technology comparative analysis. Research results: Through the research on overhead viaduct, platform type, vibration reduction and noise reduction in the design of viaduct line of Shenzhen Metro Line 3, this paper explores the experience and related technical measures of design of overhead metro line of urban rail transit. Research conclusions: In addition to satisfying the structural stress requirements, the selection of elevated viaducts for urban rail transit should be based on urban planning and urban landscape. Generally, box girders should be selected. Elevated station platform type from the operation, volume and other aspects of consideration, the general should choose the island platform. Vibration and noise reduction of overhead lines should adopt comprehensive measures from the aspects of structure, track, sound barrier and so on.