免费不卡中文字幕在线|久久做人人做人人综合|初尝黑人嗷嗷叫中文字幕|国产成人v片视频在线观看|欧美日本国产VA高清视频|亚洲国产精品国自产拍AV|国产欧美精品一区二区色综合|微拍国产私拍福利88精品视频

  • <button id="0gwi0"></button>
    <tfoot id="0gwi0"></tfoot>
  • <dl id="0gwi0"><acronym id="0gwi0"></acronym></dl>
    <li id="0gwi0"></li>
    <rt id="0gwi0"><acronym id="0gwi0"></acronym></rt>
  • <rt id="0gwi0"></rt>
  • China's new architectural wonder: a 46,000-tonne bridge rotates successfully

    Source: Xinhua| 2019-07-30 14:01:46|Editor: mingmei
    Video PlayerClose
    CHINA-HEBEI-BAODING-BRIDGE-ROTATION (CN)?

    This aerial photo taken on July 30, 2019 shows two parts of a bridge above the Beijing-Guangzhou Railway after they are successfully rotated to their targeted positions using the swivel construction method in Baoding, north China's Hebei Province. China has adopted the swivel construction method in building many bridges to minimize the interference on the traffic below. The method helps overcome the constraints of environment and traffic, while shortening the construction period. (Photo by Wang Huitang/Xinhua)

    BEIJING, July 30 (Xinhua) -- A bridge, weighing 46,000 tonnes and measuring 263.6 meters long, was successfully rotated to its targeted position in Baoding, northern China's Hebei Province Tuesday.

    The bridge swiveled around an angle of 52.4 degrees in 68 minutes above the Beijing-Guangzhou Railway, minimizing the interference on the railway traffic running below.

    The bridge was constructed by the South Branch of the China Construction Communications Engineering Group Corporation. The weight and span of the swivel bridge refreshed the world record.

    A spherical hinge, which is the "axis" supporting the rotating body, is a major piece of equipment used to turn the bridge. The diameter of the spherical hinge used in the project reached 6.5 meters, setting a new world record.

    China has adopted the swivel construction method in building many bridges. The method helps overcome the constraints of environment and traffic, while shortening the construction period.

       1 2 3 4 5 Next  

    KEY WORDS:
    EXPLORE XINHUANET
    010020070750000000000000011100001382694871