Humen Bridge is a sea-crossing bridge connecting Nansha District of Guangzhou and Humen Town, Dongguan City, Guangdong Province, China. Humen Bridge is a long-span suspension bridge, which belongs to flexible bridge. Suspension bridge is flexible, which has the advantages of strong spanning capacity and large span, but the disadvantage is that it is easy to vibrate under the action of wind. Vibration is normal, but excessive vibration is abnormal, and excessive vibration will at least affect driving comfort; If the vibration is too large, it will also affect driving safety.
The east-west cable tower of Humen Bridge is a portal frame structure, which consists of two tower columns and three root beams between them. The tower columns on both sides are reinforced concrete hollow thin-walled box structures, the three root beams are reinforced concrete hollow box sections, and the prestressed tendons are arranged in the web and anchored outside the tower wall through the tower columns; Influenced by different geological conditions, the east-west pylon adopts group pile foundation and separated extended foundation respectively.