Since the commencement of Yichang Yangtze River Highway and Railway Bridge piling project, SWDM600 rotary drilling rig of SUNWARD Intelligence has been put into operation for one month, and has won high recognition at the construction site by virtue of its strong performance and stable performance, and has built a solid foundation for this world-class project.
Yichang Yangtze River Highway and Railway Dual-purpose Bridge is a key river crossing shared by Shanghai-Chongqing-Rongyuan High-speed Railway and Hu'nan High-speed Railway, with a total length of 2.782 kilometers and a main span of 800 meters, adopting the composite design of “four-lane high-speed railway + six-lane municipal road + two railroads,” which is a new record of the world's largest span steel truss girder cable-stayed bridge for railroads, highways and railroads. Record.
As a key project for the construction of comprehensive three-dimensional transportation corridor of the Yangtze River Economic Belt, the bridge is of great significance for perfecting the national railroad network, building a comprehensive transportation hub in Yichang, and promoting the coordinated development of the region and upgrading of the city's river crossing.
The pile foundation construction by China Railway Bridge Bureau Group Co., Ltd. is responsible for the main pier 7, pier 8 for the whole bridge and the entire Yifu Railway key controlling structure. The pile diameter of the main pier reaches 3 meters, and the number of piles in a single pier is 40 and 42 respectively, with a depth of 30 to 60 meters, crossing the complex geology such as red sandstone, pebble layer and grey rock, some of which have a uniaxial compressive strength of more than 60 MPa, making the construction extremely difficult. At the same time, the project is located in an ecologically sensitive area, and the impact of construction vibration and noise on the environment needs to be minimized.
In response to the severe working conditions of the project, the Mechanized Construction Branch of China Railway Bridge Bureau purchased two SUNWARD Intelligence SWDM600 large-scale rotary drilling rigs as the main equipment. With a maximum hole diameter of 3.5 meters and a maximum drilling depth of 145 meters, this model is equipped with a high-power engine, a large-displacement main pump and a three-motor power head, which provides excellent rock penetration capability. Meanwhile, the industry's first large inertia rotary platform brake force enhancement technology can effectively deal with the impact load and platform shaking during the construction process, improve the hole formation accuracy, and meet the requirements of deep pile, large hole and high precision construction.
In order to ensure the progress of the project and the stable operation of the equipment, SUNWARD Intelligence set up a special service guarantee team to provide on-site service and technical support. The contractor highly evaluated the professional ability and response speed of SUNWARD's team, calling it “the best service performance among all equipment suppliers”.
In recent years, SUNWARD Intelligence has continuously participated in a number of key projects, from the Yanki Yangtze River Bridge and the Tarlac Pangbang Bridge in the Philippines, to the Xihoumen Dual-purpose Bridge and the Hangzhou Bay Cross-sea Bridge, to the Yichang Yangtze River Highway and Railway Dual-purpose Bridge, and has continuously written a new answer sheet of Made-in-China in the construction of infrastructures by using high-end equipments and excellent services.
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