The Research On Key Techniques Of Motor Train-sets Operating Construction In Lan Zhou West Railway Station

As the railway traffic hub in West China, Lanzhou project is an important channel to European and Asian countries. It’s the main point of the new Eurasian Continental Bridge. It also plays great effect on the strategic deployment of “B&R”. Taking the location advantage of China’s geographic center, Lanzhou hub has become a road net integrated railway junction of twelve directions. Lanzhou western bullet train maintenance database bears the task of repair and maintenance of rail motor coach. It also provides protection for the smooth operation of a number of high-speed railways. Considering the characteristics such as large amount of earthwork, track structure diversification, large span structure construction, tight time schedule, etc, follow the principle of "Domestic leading, reasonable and feasible, allow for unforeseen circumstances, moderate advance", arrange the construction rationally, make sure the construction in completed on time with high quality. Complete the following aspects of the work mainly:1. For key subgrade construction, do research on foundation treatment technology, subgrade filling, slope protection, etc. Establish the high precision measurement control network. The dynamic compaction method is used to deal with the foundation treatment of collapsible loess. In strict accordance with the subgrade design requirements by Lanzhou West Train, detail operation process, control the thickness of filling and paving, ensure the moisture content of the filler, do a good job of subgrade slope widening, complete the roadbed filling operation by quality.2. Based on the characteristics of Lanxi motor train,including track structure type, great number of turnouts, wide pillow laying difficult, etc, organize the construction team scientifically, arrange the duration reasonably. Use artificial track laying for track structure section one take. In accordance with the track laying requirements of turnout, wide pillow and ballastless, component mounting sequence, from the precision control measures, carry on the thorough analysis research from technology and accuracy control measure, put forward a complete set of measures to ensure the smooth implementation of the project.3. According to the structural requirements of Lanzhou West bullet train maintenance database, start with two kinds of foundation treatment methods of main construction(cement soil compaction pile and sand gravel backfill), analyze the main problems of the project and control points, do a good job in all aspects of the construction process from the foundation. For template engineering, reinforcement engineering, concrete engineering, waste maintenance engineering, large span steel structure engineering, in strict accordance with the specification requirements, combined with the requirements of corrosion protection, durability and high temperature resistance, complex structural design, bad construction climate and environment, make reasonable construction plan and carry out strictly.According to the characteristics of the project, formulate strict engineering quality and technical assurance measure, build detailed control system and quality assurance system In advance, in the matter, after the event. It plays great effect on the smooth implementation of the project, It also plays an important role in the construction of similar projects.