370 m高塔抱杆内拉线的研究与应用

内拉线是370 m高塔抱杆的重要组成部分，而由于370 m高塔根开大、单件质量大，再加上高塔地处海岛导致常年风速大，抱杆使用高度高，按常规的 4组内拉线形式进行分析计算，发现拉线受力过大，实际施工操作难度大，且抱杆整体位移大，防扭性能差。为此，在有限元分析及试验的基础上，创新采用12组防扭内拉线形式。该拉线形式在舟山370 m高塔中成功应用，为同类工程内拉线设置提供了新方法。

Investigation and Application of Inner Guy Wire for Gin Pole of 370-meter High Tower

The inner guy wire is an important component for the gin pole used in the erection of 370-meter high tower.Due to the large leg span and heavy single component of the high tower,the high speed wind environment throughout the year caused by the high tower’s location in island and high operating height of the gin pole,it is shown from the analysis and the calculation that setting the inner guy wires with four groups will cause the inner guy wires bearing excessive force which lead to a great difficulty in the construction,low anti-twist characteristics and serious deflection of the gin pole.Therefore,the anti-twist inner guy wires with 12 groups are innovatively used in the tower erection based on the finite element analysis and tests of the gin pole.The successful application of this new method in the erection of Zhoushan 370-meter high tower provides a new way to set inner guy wires for similar projects.