隧道大口径内衬钢瓦片运调一体机优化设计

Optimum Design for Transport and Adjustment Integrated Machine for Large-Diameter Lined Steel Tile in Tunnels

外界环境或者施工质量缺陷造成输水管线中预制混凝土管片裂纹或者坍塌,需运输大口径内衬钢瓦片进行加固。针对隧道内大口径内衬钢瓦片与隧道壁间隙小、长距离运输的钢瓦片为偏心结构和拼装对接精度要求高等施工技术难题,设计制造内衬钢瓦片运调一体机。针对钢瓦片的夹持机构、运输纠偏和拼装对接等关键功能进行结构优化设计和系统分析,并根据钢瓦片结构特征和施工环境确定钢瓦片的最佳夹持、运输和拼装对接方式,同时采用有限元分析方法对内衬钢瓦片运调一体机整体结构进行强度校核。实际工程应用表明:1)内衬钢瓦片运调一体机结构设计合理,强度稳定性和设备功能满足现场施工要求,为大口径内衬钢瓦片在隧道内长距离运输和拼装对接施工提供了一种技术方案;2)提高了内衬钢瓦片在隧道内的运输效率和拼装对接精度,并降低了施工难度和施工成本。

To avoid cracks or collapse to precast concrete segments in water transmission lines due to external environment or construction quality defects,large-diameter lined steel tiles are required for reinforcement.A lined steel tile transport and adjustment integrated machine is designed and manufactured to address technical construction problems such as tight space between lined steel tile and inner tunnel wall,eccentric structure of steel tile in long-distance transportation,and high assembly accuracy requirement.Next,structural design and systematic analyses are conducted on the clamping structure,transportation correction system,and assembly and docking of the steel tiles,and optimal schemes are proposed.Finally,the strength of the transport and adjustment integrated machine is examined by finite element analysis.The results of the analysis reveal the following:(1)The structural design is reasonable,the strength is stable,and the functions of the machine meet relevant requirements of site construction,which can provide a technical scheme for the long-distance transportation,assembling,and docking construction of large-diameter lined steel tiles in tunnels.(2)The machine improves the transportation efficiency,assembly and docking accuracy of lined steel tiles,and reduces the cost and construction difficulty.