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京杭运河宝应第二公路大桥,位于江苏省宝应县城北,是盐金国防公路上的一座重要桥梁。宝应二桥全桥长604.72m。主桥上部结构为双塔双索面刚性拉杆斜拉桥,稀索体系,每塔设一对拉杆,塔顶设置锚箱,塔梁固结;主桥五跨一联。跨经为2×25+75+2×25m,纵梁与横梁构成主桥框架,横梁间为简支组合箱梁,纵梁为箱形断面,宽1.3m,高1.7m,组合箱梁高1.3m。该桥由四航局珠海公司承建,工程虽然不大,但其技术要求高,对于主桥其结构及斜拉体系和主引桥组合箱梁在国内并无先例。目前已成功地攻克了箱梁预制难关,现正在集中力量进行主桥的施工工作。
The Beijing-Hangzhou Canal Baoying No. 2 Highway Bridge, located in the north of Baoying County, Jiangsu Province, is an important bridge on the Yanjin National Defense Highway. Baoying Bridge full bridge length 604.72m. The upper structure of the main bridge is a double-cable, double-cable plane rigid cable-stayed cable-stayed bridge and a thin cable system. Each tower has a pair of tie rods. An anchor box and tower girder are fixed at the tower top. The span is 2 × 25 + 75 + 2 × 25m, the main beam and the beam constitute the main bridge frame, the beam is simply supported composite beam, the beam is box-shaped section, width 1.3m, height 1.7m, combined box beam height 1.3m. The bridge by the four navigation Zhuhai company construction, although the project is not large, but its high technical requirements for the main bridge structure and the main cable stayed bridge system and composite girder in the country there is no precedent. Has successfully overcome the prefabricated box girder difficulties, is now concentrating on the construction of the main bridge.