Closure of Main Arch of Jinghe Bridge of Dongzhuang Water Conservancy Project in Shaanxi

October 10, 11:00，Major national water conservancy projects——Construction site of Jinghe Bridge of Dongzhuang Water Conservancy Project in Shaanxi Province，20 minutes of pulling by the cable lifting system，The last section of the main arch successfully reached the 270-meter-high assembly point.，And that closure of the main arch of the bridge is realize。

The bridge is an important node project for the external traffic of Dongzhuang Water Conservancy Project.，The total length is 284 meters，It is a half-through spaceYSteel box arch bridge，The bridge structure is presented both in plan and elevationYType structure，It is the first case in China.。The closure arch section is 10 long.72 meters，High 3.075m，Weight 28.4 tons。

Ma Min, head of Dongzhuang Water Conservancy Project of China Railway 20 Bureau, said.：“Due to limited geographical location，The design scheme of Jinghe Bridge adopts three-dimensional curved arch design.，The new mode of single arch and double arch combined stress is used for construction.，It is necessary to splice 26 irregular steel structure segments.，The accumulated welding error shall not exceed 1 cm.。At present，There is no steel box girder arch bridge of this design in China.，It is also extremely rare worldwide.。”

After the completion of Dongzhuang Water Conservancy Project, it will become the largest reservoir in Shaanxi Province.、The dam height is the highest、Water conservancy project with the largest single project investment，It can guarantee Xi'an、Xianyang、Flood control safety of nearly 1.5 million people and 800000 mu of cultivated land in 9 counties and districts of 3 cities in Weinan。

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