The hottest ovim assisted rigid suspension stiffen

2022-08-16
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Ovim assisted rigid suspension stiffened continuous steel truss bridge

ovim assisted rigid suspension stiffened continuous steel truss bridge

China Construction Machinery Information

the main body of the bridge weighs 16000 tons, the horizontal jacking and vertical jacking need to be synchronized, the design and construction of multi-point jacking system are difficult, and so on, With the joint efforts of Liuzhou ovim Machinery Co., Ltd. (hereinafter referred to as "ovim company") and the general contractor of the project, after more than three months of continuous promotion, the problems were solved one by one. On August 5, the main part of Shiji Yellow River Bridge, the first long-span rigid suspension stiffened continuous steel truss bridge for public and railway in China, successfully crossed the 180 meter wide water surface and reached the main pier in the center of the river. This marks a breakthrough in the construction of such bridges in China

one end of Shiji Yellow River Bridge is smoothly pushed into the water. The main pier of Shiji Yellow River Bridge is a node project of Shijiazhuang Jinan railway passenger dedicated line, with a total length of 14.03 kilometers. The main bridge is constructed by pushing method, that is, the main body of the bridge is built on the North Bank of the Jinan section of the Yellow River on September 12, and then the main body of the bridge is pushed to the south bank with jacks, slides and other equipment. The advanced pushing technology of ovim company protects the bridge construction

the maximum pushing weight of the steel beam of the bridge is 37000t, and the Vickers hardness test is similar. The maximum support reaction force of the middle truss node is 3732t, the maximum cantilever length of the pushing is 154m, and the maximum height of the sliding block pad is 1.5m. These technical data are currently ranked first in China. The relatively simple tensile testing machine of the steel in this construction can also use 3-phase asynchronous motors, etc; At present, the construction technology of truss girder with stiffening chord is also the first in China

"in the process of bridge construction, there are three major difficulties: first, the design and construction of multi-point jacking system; second, the selection and layout of jacking equipment; third, the synchronization control of horizontal jacking and vertical jacking. Each difficulty must be strictly controlled without any deviation." Said yuanjiesheng, project manager of ovim. Despite the difficulties, ovim staff still adhered to the belief of victory, strictly controlled the technical links, and successfully pushed one end of the Shiji Yellow River Bridge onto the main pier

it is reported that the Shiji Yellow River Bridge will be completed in 2017. After completion, the Shiji passenger dedicated line, in addition to taking bullet trains, can also cross the Yellow River on foot, greatly facilitating the passenger transport between Shijiazhuang and Jinan, and establishing a passenger channel connecting the Beijing Guangzhou passenger dedicated line and the Beijing Shanghai high-speed railway

this time, one end of Shiji Yellow River Bridge was successfully pushed onto the main pier in the water, overcoming the key problems of the project, laying the foundation for the subsequent construction of the bridge and accelerating the overall construction progress. At the same time, when using suitable hydraulic oil, the successful jacking of Shiji Yellow River Bridge is another great progress in the jacking technology of ovim, which once again demonstrates the style and strength of the leading enterprise in the domestic prestressed industry

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