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Dongjiang Bridge is located in Dongguan-Shenzhen Expressway northernmost the Shijie segment across East Jiangnan tributaries at the domestic first double - deck highway bridge . The main bridge length of 432m, for the three-span continuous rigid Suspension Reinforced steel truss bridge span combination ( 112 208 112) m . Main truss horizontal three - truss structure , stringers high 10m truss spacing 2x18m . The Warren truss vertical rod , the facade of the main truss on stiffening chord parabola , winding between the upper stiffening chord connection with suspenders . Dongjiang Bridge beautiful shape, novel structure , the complexity of the performance of the force , unique design , the steel girder manufacturing and construction is very difficult , high accuracy requirements for erection and closure , closure points , linear control is very important and must be very precise . To ensure that the bridge construction quality , safe , smooth , precise co Dragon , Dongjiang Bridge steel girder assembly erection process control , -edge cross- level string node bent Law erection , in cross- flat chord cantilever assembly erection and co- dragon , plus fresh chord erection and co- dragon and other construction technology research and summarized form supporting the construction process , while the main span flat chord stiffening the chord erection process stability , linear control aspect to the internal force adjustment has done a detailed exposition is given to solve the problem method. The results of this study to improve the level of technology and innovation capability of our bridge construction has practical significance , can produce huge economic and social benefits while accumulated experience , providing reference for the construction of the bridges of the same type in the future .
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