The 30000 steel beams of the hottest Wuqiao heavy

Wuqiao Heavy Industry Co., Ltd.: 30000 steel beams pushed across the Yellow River, and the pushing equipment showed great prestige

Wuqiao Heavy Industry Co., Ltd.: 30000 steel beams pushed across the Yellow River, and the pushing equipment showed great prestige

China Construction Machinery Information

Guide: on November 7, with the front end of the first 1082 meter steel beam with a total weight of about 30000 tons stably falling on the pier 0 of the main bridge, the world's longest highway and railway dual-purpose bridge Zhengzhou Yellow River Highway and railway dual-purpose bridge was successfully pushed into place. The on-site technicians of Wuqiao automation company, who developed the jacking equipment for the steel beam of the bridge, couldn't help cheering gb700-2006 (carbon structural steel)

on November 7, with the first 1082 meter steel beam with a total weight of about 30000 tons steadily falling on the pier 0 of the main bridge, the main span steel beam of Zhengzhou Yellow River Highway railway bridge, the longest highway railway bridge in the world, was successfully pushed into place. The on-site technicians of Wuqiao automation company, who developed the pushing equipment for the steel beam of the bridge, couldn't help but zoom in, zoom out and click on the data corresponding to each point on the observation curve to cheer

as the controlling project of Beijing Guangzhou passenger dedicated line, zhenghuangqiao has set many world firsts with large scale, high speed and new structure. The steel beam with a total length of 1684 meters adopts the special space truss structure form of three main trusses and inclined side trusses. How to adopt a novel construction scheme to complete the assembly and placement of long-span steel beams has become the biggest technical control difficulty of the bridge. Wuqiao heavy industry automation company has made technical breakthroughs in automation control, hydraulic pump station, large tonnage continuous jack, etc. after repeated design and model demonstration, it has finally formed a fully automatic multi-point synchronous push steel beam erection technology

Zheng Huang bridge is located in the wetland area of the Yellow River. It has high requirements for the environmental protection Party's experimental method and the indoor three-axis experiment. Due to the vast terrain and strong wind, the traditional cantilever assembly of the crane with the mobile steel beam on the top of the beam is poor in safety conditions and difficult to point. In addition, the span of the steel beam is large, and its cantilever is too large, so the temporary pier must be set in the middle of the river, which is not only cumbersome, but also costly, and the construction period is also very tight. In addition, because the bridge is a steel truss beam, which can only bear the force at the joints, and has a large span and heavy tonnage, the assembly of the three main trusses must be absolutely consistent. In addition to ensuring the accuracy, the assembly of the beveled side trusses should also control the protection of the friction surface to meet the force transmission needs of the bolts, so the multi-point synchronous jacking construction technology came into being

jacking method is an advanced construction method of self erection without support. With the help of sliding device, the beam is pushed section by section to the opposite bank. Using the multi-point synchronous jacking construction technology, the steel beam can be assembled on the shore support first, and then the steel beam can be pushed forward synchronously at multiple points. This breakthrough construction method not only reduces the temporary supports on water and ensures that the river will not be affected by construction, but also changes the steel truss girder erection from high-altitude operation on water to land platform operation, realizes the industrialization of steel girder installation, increases safety, and effectively ensures the construction quality and progress of steel girders

the successful use of multi-point synchronous jacking technology broke the previous record of railway steel truss girder jacking with a span of 64 meters, reaching 168 meters, making the jacking technology break through the limitation of span and create a new world record for the jacking span of this beam type