Ouweimu successfully cast steel cable for your Guizhou Expressway
The morning of May 20th, with the last piece of steel truss bridge panel splice is completed, by the Liuzhou ouweimu machinery Limited by Share Ltd (hereinafter referred to as "OVM") participation in the Guizhou duck pond river bridge successful closure. From a high angle, stand by cable, like two rows of strings, composed of a beautiful landscape.
The main span 800 meters long span 1466.5 meters long bridge is the world's largest span steel truss girder hybrid cable-stayed bridge, the world's mountain cable-stayed bridge is the most. The bridge closure smoothly in domestic bridge is a major event, focusing a lot of attention, the bridge cable, OVM250 cable system is concerned.
Quality experience winning project
Yachi River Bridge is expensive Guizhou Expressway Control Project, located in Dongfeng Lake area, across the river from the duck pond, 53Km Guiyang Baiyun District, from the view of the Lake District, 45Km, 25Km from Qianxi County of Bijie city. The bridge deck is 28 meters wide and the length of the bridge is 1466.5m. By mountain terrain constraints, the design unit will be its main bridge design for hybrid girder cable-stayed bridge is 1240 meters across Twin Towers and double cable planes, using steel truss structure, side span concrete structure, the main tower of cable tower by H.
In 2014, the construction units made public bidding for the cable-stayed cable system of the bridge. The cable stayed system is the key part of the bridge. There are 192 cables in the whole bridge. The number of cables is very large, and the technical requirements of the products are strict, which is also rare in the history of bridge construction in China.
With good product quality and many successful experiences, OVM company successfully signed cable products of the project and installation services, to provide OVM250 monofilament coated with epoxy coated steel wire strand cable system for the cable specifications from OVM250-43 to OVM250-85 hole, the shortest cable length of 104.2 meters, the longest cable-stayed bridge is 424.6 meters long.
Scientific and technological innovation and construction
The yychi River Bridge in Guizhou is located in the deep canyon, and the road traffic is very difficult. Local weather, rainy and foggy, and the wind speed is very large, the construction workers from the Department learned that the construction site is usually 7, 8 times the maximum wind speed reached 11. In addition, the bridge structure is complex and the construction time is tight, which all bring great difficulties to the construction.
The company provides OVM250 OVM cable system is a kind of parallel strand cable system is an important part of the solution ouweimu cable-stayed bridge system, the cable body for epoxy PE sheathed steel strand, anchorage ends by clamping cable with HDPE outer sheah rain wind induced vibration. The anchorage zone steel strand is always parallel and independent unbonded state, which can ensure that the stay cable can be single cable and single tension, and the transition part of the cable has reliable waterproof and sealing measures, providing durable corrosion protection for the cable. During the period of construction and operation, the overall cable adjustment and single replacement can be realized.
At the same time, in the face of the road transportation inconvenience, construction environment, the implementation process of the whole project, the transportation and installation of full play to the unique characteristics of OVM250 cable system "break up the whole into parts". According to this characteristic, the product transportation does not have to adopt the large freight transportation tool, the product construction does not have to adopt the heavy installation equipment. The construction process has realized the lightweight of the equipment, thereby reducing the intensity of the workers' construction and improving the work efficiency of the workers. The problem of the environment caused by the construction of the Duck River Bridge has been well solved.
The development of enterprises to promote progress
Yachi River Bridge is a long span bridge in the typical, very much needs to overcome the difficulties in the construction, the construction of the bridge at the beginning, had to plan has been repeatedly demonstrated, and ultimately determine the use of the OVM scheme. Today, the bridge closure, the perfect illustration of bridge construction China strength, and for the OVM through this project, also shows it in the strength of steel cable systems.
