The Kunlun transport-erect machine developed by China Railway Construction Corporation Limited (CRCC) completed its last heavy-duty test on June 18 and will play a part in the erection of girders of the Meizhou Bay bridge of Fuzhou-Xiamen railway in South China's Fujian province.
As the world's first transport-erect machine that can handle a 1,000-ton box girder, Kunlun is a result of the rapid development of China's high-speed railway bridge's girder erection technology and will contribute to the country's future high-speed railway construction.
Jointly developed by China Railway Fifth Survey and Design Institute Group Co., Ltd. and China Railway 11 Bureau Group Co., Ltd., both subsidiaries of CRCC, Kunlun is a versatile bridge girder erection machine.
It is capable of high-speed box girder erection engineering spanning 24, 32 and 40 meters, which means it can shoulder the functions of three traditional ones.
Take for example the Zhengzhou-Chongqing high-speed railway, which links Zhengzhou of Henan province with Southwest China's Chongqing. More than 90 percent of its Chongqing section is bridge and tunnels.
Kunlun is capable of girder erection on long ramps with a slope angle of 30 degrees and curve tracks with small radiuses.
Added to its lighter weight, Kunlun has a more flexible and highly-efficient operation than a splitter.
The use of a 40-meter box girder in high-speed railway bridges can reduce resonance of the trains, allowing them operate stably at high speed.
Kunlun's ability to erect that type of girder supports China's high-speed trains as they roll into the 400 kilometers per hour era.
It's worth mentioning that Kunlun is made with stronger and lighter materials which meet the requirements of aviation vehicles and submarines.
It also features intelligent technologies to automatically transport girders through tunnels and precisely erect them.
By linking the informatization management system with the information management and maintenance platforms of the railway engineering management center and engineering enterprises, real-time conditions and information of the girders can be obtained by operators, which ensures safety.
Those capacities have also won China stronger competitiveness in transport-erection equipment manufacturing and export of high-speed railway components.
Capable of operating in special conditions, Kunlun increases the choices of bridge locations. The machine also reduces about 20 percent of girder erection costs and improves erection speed by 25 percent.
With a strong capacity of erecting a 1,000-tons box girder, the machine requires less construction area, which makes it easier to navigate.
The new Fuzhou-Xiamen railway is China's first cross-sea high-speed railway. Use of the 1,000 ton 40-meter box girder to build its bridges increases navigation volume, lowers the impact of tidewater and improves security of cross-sea bridges.
The interface of the informatization management system [Photo/sasac.gov.cn]
The Kunlun transport-erection machine undergoes final adjustment. [Photo/sasac.gov.cn]
(Executive editor: Wang Ruoting)