开行动车组情况下增建二线铺架施工技术研究  

Research on Construction Technology for Building Second Line Under Condition of Running EMU

作　　者：赵代强[1] 

机构地区：[1]中铁八局集团有限公司,成都610036

出　　处：《铁道工程学报》2013年第9期35-39,共5页Journal of Railway Engineering Society

摘　　要：研究目的:为了确保在既有遂渝线开行动车组时速165 km条件下增建二线工程施工安全和质量,对动车组通过风压影响、临近既有线4.4～6.5 m小线间距范围内架梁、铺轨、单元焊接及应力放散锁定施工工艺等关键技术进行了研究,最大限度确保了既有线运营和工程施工的安全。研究结论:(1)通过对动车风压检算分析,当线间距为4.4 m时,铺架设备处于静止状态,既有线通过动车组速度为165 km/h,产生的会车压力波动最大幅值为637.15 Pa,小于线间距安全瞬态压力波允许值900 Pa,车窗结构和玻璃安全可靠,设备稳定性高;(2)采用封锁5 h架设1孔梁或铺设300 m轨排的方式,解决了与既有线距离4.4～6.5 m范围内铺架施工技术难题,保证了施工安全和质量,降低了工程成本,缩短了工期;(3)研究成果主要适应于既有铁路小线间距范围内增建二线施工技术领域。Research purposes： In order to ensure the safety and quality of building the second - line of the Suining - Chongqing Railway under condition of running the EMU at speed of 165 km and the operation safety of the existing railway, it is necessary to do the study on the wind pressure influence when the EMU running and the key construction technologies of erecting the girder, laying track, welding unit and spreading and blocking the stress in the small midway between tracks of 4.4 -6.5 m from the near existing track. Research conclusions： （ 1 ） The analysis of wind pressure calculation of the EMU shows when the midway between tracks is 4.4m, the erecting equipment is in the stationary state and the speed of the EMU is at 165 kin/h, the maximum amplitude of pressure fluctuation generated by the EMUs meeting is 637, 15 Pa and it is less than the allowable instantaneous pressure wave value of 900 Pa of the midway between tracks. The EMUg window structure and glass are in the safe and reliable state and the equipment has the high stability. （2） By adopting the method of blocking track for 5 hours to erect 1 beam or laying 300m long track panel, the laying and erecting works can be done in small midway between track of 4.4 - 6.5 m from the existing railway track. In this way, the construction safety and quality are guaranteed, the construction cost is cut and the construction period is shortened. （3）This research result can provide the reference to both small railway line sDacin~ range of additional secand - line enn^tnletinn tetdancdc^o＇v

关 键 词：动车组 小线间距 增建二线 风压检算 铺架技术 

分 类 号：U215.5[交通运输工程—道路与铁道工程]