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On April 23, the track-laying base of Botanical Garden Station of Metro Line 1 East Extension Line was a busy scene, and the construction personnel wore safety helmets, performed their duties, and carried out operations in an orderly manner. I saw that an orange double cantilever gantry crane lifted a 25-meter-long and 16-ton rail row smoothly, slowly lowered it to the station with an underground depth of about 20 meters through the rail row shaft, and then transported the rail row to the laying position of the left line between Boguan North Street Station and Botanical Garden Station...... It is understood that the track laying of the east extension line of Line 1 has completed a total of 718 meters of general overall track bed, 1434.545 meters of steel spring floating plate track bed, the right line of the Bo-Zhi section has successfully realized the short rail pass, and the left line of the Bo-Zhi section is undergoing track-laying construction.
In order to reduce vibration and noise, the track "sleeps on Simmons"
At the track-laying site at the Botanical Garden Station of the East Extension of Metro Line 1, a gantry crane lowers the assembled rail row vertically onto the underground rail car, and the rail car pushes the rail row to the working face. On the side of the construction site, several workers are working together to stack the rebar together, which will be tied to the rail row to form a model.
"The staff first has to assemble the 25-meter-long steel rails and sleepers, fasteners, reinforcement cages, etc. into a rail row, and then use the gantry crane to lift the rail row to the underground station, and then send the rail row to the operation site by the rail car, and then the track laying gantry crane will be laid in place, and finally use professional instruments to adjust the accuracy of the elevation (up and down) and direction (left and right) to complete the laying of the subway track. According to the on-site construction personnel, in order to reduce the noise generated by the operation of the train, the track laying of the east extension of Metro Line 1 not only adopts the general integral track bed in the traditional process, but also uses the vibration damping track bed.
The reporter saw that there are workers at the construction site who are tying a special subway track bed steel cage, above the steel cage are two subway tracks, and there are sleeves distributed below the tracks, and springs are arranged in the sleeves, which is the integral track bed of the steel spring floating plate. It is understood that the normal track-laying structure is that the rails are laid on the sleepers, which is equivalent to direct contact with the ground. The steel spring floating plate integral track bed is to add a steel spring floating plate in the track bed, and the train passes at high speed from the track to reduce the vibration amplitude, just like the track "sleeps on Simmons", which plays the role of buffering and sound insulation. It is understood that the cumulative length of this kind of track bed in the east extension of Line 1 is 13 kilometers.
A total of three track-laying bases are set up, and the first section is short-tracked
The track project of the east extension line of Shenyang Metro Line 1 is undertaken by the 15th Bureau of China Railway, starting from the section behind Liming Square Station, the terminal station of Metro Line 1 in the west, and reaching Shuangma Station in the east, with a track laying length of 36.655 kilometers on the main line, with a total of 18 groups of single turnouts and 2 groups of cross lines. In order to further speed up the progress of track laying and seize the construction period, there are three track laying bases on the line, namely the track laying base of Botanical Garden Station, the track laying base of Tanglin Park Station, and the track laying base of Dongnong open cut section.
Qin Hongfei, the person in charge of the construction of the track-laying project of the east extension of Shenyang Metro Line 1 of China Railway 15th Bureau Group Co., Ltd., introduced that up to now, the line has completed a total of 718 meters of general overall track bed, 1434.545 meters of steel spring floating plate track bed, and the right line of the Bo-Zhi section has successfully realized the short rail pass, and the left line of the Bo-Zhi section is being laid with tracks.
The inverted schedule of the construction period will be accelerated to ensure that the rail will be completed by the end of the year
The east extension of Shenyang Metro Line 1 is the eastern extension of the existing Line 1, which runs roughly east-west, passing through the three administrative districts of Dadong District, Shenhe District and Hunnan District, and connects the agricultural university, Tanglin Park, botanical garden and other passenger attraction points and scenic spots along the line. The project starts from the section behind the Liming Square Station of Line 1 in the west and reaches Shuangma Station in the east, with a total length of 16km, all of which are underground lines, with a total of 10 stations, including Xinhui Street Station, Xinning Street Station, Dongdaying Street Station, Agricultural University Station, Qianling Station, Dongling Park Station, Shuiquan Station, Boguan North Street Station, Botanical Garden Station and Shuangma Station, and 1 full parking lot.
Qin Hongfei said that in the face of the tight construction period, complex processes, and cross-construction operations of multi-professional units, Shenyang Metro Group and the project department of China Railway 15th Bureau carried out a detailed combing of the major difficulties and key links in the project, reversed the construction period, and carried out the track-laying construction efficiently and efficiently, so as to form multiple operating faces at the same time as soon as possible, and make every effort to speed up the construction of the east extension of Shenyang Metro Line 1, and make every effort to ensure the smooth completion of the rail completion goal at the end of the year.
Fingertip client, Shen Bao all-media chief reporter Lu Jia
Chief photojournalist Chang Shenggang
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