85 bolt holes, 5mm micro-motion, see Xugong 2000 tons of cranes to achieve a new breakthrough in the global large lifting method
At 15:00 on November 1st, with the sling of Xugong XGC28000 crawler crane sling, the first section of the main tower of the Yongding River Bridge, Yongan River, Beijing, was completed. When the first section of the main tower with a weight of 574 tons is accurately penetrated into the 85 steel rods and 208 shearing keys embedded in the concrete below, it stands firmly on the pedestal, marking the start of construction in June 2016. The construction of the Yongding River Bridge project officially entered the sprint stage of the installation of the upper steel structure of the bridge, which also means that XGC28000 will create another new record in history.
2000 tons of behemoths achieve millimeter-level mounting accuracy
Xugong XGC28000 is the main bridge for the construction. It is located in the Lianshi Lake Scenic Area of ​​Yongding River, Shijingshan District, Beijing. It is 639 meters long and is designed as an all-steel structure inverted U-shaped double-slanted steel tower cable-stayed bridge with a main span of 280 meters. The inclined steel tower is 124.93 meters high and the bridge deck is 54.9 meters wide. It is the largest span bridge in Beijing and the widest cable-stayed bridge in China.
The structure of the structure is simple and beautiful, and the environment is harmonious. It solves the bridge layout problem of road and river crossing obliquely, and is the first application at home and abroad. “The Yongding River has a very large span and belongs to the skew bridge. The key points need to solve the problems of bridge stress and water flow resistance. It is very difficult.†Mr. Yang, the municipal engineering research institute responsible for the design, said.
The scale is large, the structure is complex, the structure of the nodes is complex, and the accuracy requirements are extremely high... Previously, the Yongding River Bridge project has been subjected to the construction of river course cofferdams, bored pile foundations, piers and pedestals. It is the 2000-ton XGC28000 that undertakes the hoisting construction of the tower-beam joint section of the main tower. In competition with a foreign brand, XCMG XGC28000 won at a load rate (85%) lower than the other party's 5%. “We have been stationed in the technical team for two years in Beijing. Together with the experts of Beijing Urban Construction Group, we have developed the most professional and feasible lifting plan for the owners.†Mr. Yu Limin, Chairman of Shandong Gulf Hoisting Engineering Co., Ltd. In particular, “the conditions of each segment are different and must be accurate to the angle of force and load-bearing of each rope,†he stressed.
Opening up the first river, Xugong crane completed the new industry hoisting new construction method
The steel section hoisted on the afternoon of the 11th was the heaviest and largest geometric section of all sections of the tower, with a flat area of ​​240 square meters. “The difficulty in hoisting is that when the first section of the steel tower is on the concrete pedestal, it must pass through the 85 steel rods at the same time. The difficulty of matching is the most in the country.†The walking, translation, and equipment of the equipment during the hoisting process The landing and landing operations are extremely challenging. For this reason, the “bay hoisting†also specially designed the matching new hoisting locks. "85 bolt holes, the wrong one will be full of all the plates," XGC28000 this monster with a fairly reliable stability and micro-motion, passed a severe test, the accuracy is controlled within 5mm.
The accurate positioning of the first section of the steel tower lays a good foundation for the subsequent installation of the steel tower section. Such outstanding construction performance fully demonstrates the superior performance and reliable quality of the XGC28000, as well as the “bay lifting†following the hoisting of offshore oil. The most advanced technology after drilling platform patents.
Qi Zhiqiang, the project manager of the Urban Construction Group, who is responsible for the construction, said: "From the first stage of the hoisting process, the lifting capacity and lifting stability of XCMG X800028000 crawler cranes can fully meet the lifting requirements of the Yongding River Bridge." Next, the XGC28000 will carry out lifting tasks for 51 steel tower segments and 68 steel box beam segments.
Stand up for the battle and stand up the backbone of national equipment
The Yongding River Bridge, which has no center of gravity and irregular shape bridges, is the first in China. It is also the first time for Xugong’s 2000-ton veteran to be a long-time battlefield. XGC28000’s outstanding large-scale hoisting strength continues to be written by domestic large-scale crawlers. A wonderful chapter of heavy equipment.
On the same day, the leaders of the Beijing Municipal Commission of Communications, the Beijing Railway Bureau, the Beijing Municipal Design and Design Institute and other guests from the participating organizations jointly paid attention to the process of lifting the steel tower in the first section of the main bridge, CCTV, Beijing Satellite TV, Beijing Morning Post, etc. A number of mainstream media have used the lens to record the shocking scene of this "super project."
Mr. Zhang Hanxu (left), Deputy General Manager of Xugong Group's Hoisting Machinery Division, and Mr. Yu Limin, Chairman of Shandong Gulf Hoisting Engineering Co., Ltd.
Mr. Zhang Hanxu, deputy general manager of Xugong Group's lifting machinery division, also visited the scene and witnessed another important moment in the history of XGC28000 lifting. He said: "This is indeed worthy of our entire nation's pride." This leading position is "after nearly five years of rapid development, scale development, quality development and technological development, we have laid out one step at a time.
XGC28000 crawler crane independently developed and manufactured by Xugong has been in the Wuhan, Guangdong, Maoming, Fujian, Quanzhou, 12 million tons refinery project and Ningxia 500,000 tons / year methanol olefins project and Yantai Longkou 220 tons offshore oil rig platform hoisting Outstanding performance, many times created a large hoisting record in the industry. Gradually broke the domestic monopoly tonnage crawler lifting equipment monopolized by foreign brands, consolidating the main position of the construction of domestic super-large tonnage crane key projects, the strength of the interpretation of "powerful weapon."
In the solid step of promoting domestic large-scale hoisting equipment from manufacturing to manufacturing countries, Xugong has gained great recognition and rich achievements in the development of crawler cranes for more than 20 years, and technological innovation has also been continuously promoted. The upgrading of related industries has really erected the backbone of the national equipment manufacturing industry!
Editor in charge: Chen Xu
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