近日,具有“东海国门第一桥隧”之称的岱山县官山跨海特大桥合龙。官山大桥是浙江省重点工程,为双塔单跨钢箱梁悬索桥,主跨580m,为中国首座隧道锚跨海大桥,是浙江省岱山至舟山连岛公路的起步工程,连接岱山牛轭岛与官山岛,全长2.4km,双向四车道,设计速度80km/h,由官山大桥、炮台山隧道、连线公路组成。这是中国首座采用隧道锚的悬索跨海特大桥,该隧道锚具 Recently, with “East China Sea first door bridge” is called Daishan County, Guanshan across the sea bridge. Guanshan Bridge is a key project in Zhejiang Province. It is a twin-span single-span steel box girder suspension bridge with a main span of 580m. It is the first tunnel anchor bridge in China and is the starting project of Daishan Island to Zhoushan Island in Zhejiang Province. And Guanshan Island, a total length of 2.4km, two-way four lanes, the design speed of 80km / h, by the Guanshan Bridge, Fortress Tunnel, connecting road composition. This is the first suspension bridge in China that uses a tunnel anchor. The tunnel anchor