The Track Construction Technology Research Of The Speed Increase Improvement In Beijing-Qinhuangdao Passenger Dedicated Line

In our development blueprint in the new century, the construction of high-speed rail and passenger dedicated line hold an extremely important position. With China's economic and social development, the transformation of existing line as well as a main form that is our country develop high-speed rail, speed the construction has been urgent. In this paper, the problem about the construction of speed improvement Beijing-Qinhuangdao Passenger Dedieated Line which is the first Engineering of reformation on existing line in our countary is introduced.The Beijing-Qinhuangdao passenger dedieated line accelerate transformation projects targeted in this paper, the construction techniques of speed increase reformation on existing line which includes the zone orbit construction and the station field construction were mainly introduced.The project of the zone orbit construction focus on artificial replace the normal III sleeper and replace sleeper on the bridge. In the Beijing-Qinhuangdao access train speed, traffic flow density, special freight between great and construction of large interference, so we have to construct under the engineering rule.In the paper we use the construction method which is artificial replace before summer vacation and use large apparatus to replace road quarrel.The project of the station field construction focus on the construction of replacement road quarrel and switch in the train station, replace normal switch in the train station and the construction craft of installation intrinsic speed swich. Applying the VZ200 12 swing nose turnout swich to replace all of the normal swich in line, and replace the normal swich in the station.Safety is the most important issue in the construction. Carrying on reformation on existing line, we have to organize reasonably and arrange meticulously, at the same time we must guarantee the safety in exciting line. The construction quality is the life of the engineering, we should be strictly enforced construction standards and quality requirements.