The world’s first high bridge of Beipan River bridge closure is 200 storeys high – Beijing yo te amo

The world’s first high bridge of Beipan River bridge closure is 200 storeys high – Beijing span in Guizhou, natural moat change thoroughfare. The vertical height of 565 meters, the equivalent of the world’s first high 200 storey hangrui high-speed Beipanjiang bridge (previously reported for the Nizhu River Bridge, currently named Beipanjiang bridge) has been officially closed. After the opening of Yunnan to Guizhou Xuanwei Liupanshui was reduced from 5 hours to 1 hours of Beipanjiang bridge is located in Yunnan and Guizhou at the junction of Xuanwei City, Yunnan Guizhou across two provinces, a total length of 1341.4 meters, the bridge deck to the bottom of the vertical height of 565 meters, becoming the world’s first takahashi. At the same time, Ohashi To and west sides of the main pier height was 269 meters and 247 meters, the main span of 720 meters after the late start building your (Yang) Guizhou (West) highway Yachi River Bridge, the main span of the bridge span in the same type in the world ranking second. Beipanjiang bridge is expected this year by the end of the opening, after the opening of Yunnan Xuanwei City to Guizhou Liupanshui will drive 5 hours from the previous, shortened to 1 hours. Beipanjiang is a tributary of the Pearl River Basin of Xijiang River on the source of the Red River, flows through Yunnan, Guizhou two provinces, a total length of 449 km, a total drop of 1985 meters, 1000 meters in length 4.42 meters lower average. Since Beipanjiang bridge self construction, overcome along the mountain peaks, valleys, complex geology, weather and other difficulties, to ensure a high technology content, the construction of Beipanjiang bridge difficult to successfully enter the final stage. How to ensure the bridge closure in precise docking? The precise adjustment to ensure accurate closure of engineering and technical personnel at the scene said, near the closure due to temperature change, and the construction process of wind and other factors, the deviation of the bridge may exist in longitudinal direction of the transverse axis deviation distance, direction, vertical to the Gao Chengfang deviation, and angle deviation. The deviation of hangrui speed of Beipanjiang bridge construction on the longitudinal direction of the overtime mileage, need to cross the bridge before the closure in the stretching distance; for the horizontal and vertical deviation adjustment, mainly in the closure; for angle deviation should be adjusted according to the cable, the pulling force. For the first time in the mountains by longitudinal suspended spell in the erection of Beipanjiang bridge construction process, engineering and technical personnel for the first time in the mountains of the long span steel truss cable-stayed bridge construction, the use of vertical cantilever technology on steel truss segment hoisting. This technology is to 12 meters long, weighing about 160 tons of steel truss beam segment in the ground after the completion of the whole assembly, through the crane and other equipment for the overall lifting. In terms of duration, compared to the traditional process of a section can save one to two days of the project. In addition, due to the steel truss segments are in the ground after the completion of the joint, and then the overall lifting, compared with the traditional in the air splicing process, the construction of higher accuracy, while the safety factor is higher.相关的主题文章: