为提高复杂车载升降塔的抗风设计与分析的准确性,探讨了车载桁架式升降塔的抗风设计思路。首先,本文分析了车载升降塔的抗风设计指标及风载荷分析方法。其次,提出了抗风性能分析计算与有限元模拟试验相结合的方法,对车载升降塔在12级风下的抗倾覆能力进行了验证。最后,通过搭建模拟风载试验平台,对某车载升降塔的实际抗风性能进行了验证。结果表明:车载升降塔的实测最大晃动量与仿真值吻合性较好,验证了抗风性能分析与有限元仿真分析方法在提升车载升降塔抗风性能设计中的准确性。该文为复杂车载升降塔抗风性能的准确设计提供了方法,具有较好的实际应用价值。

In order to improve the design and analysis accuracy of vehicle-borne telescopic towers, the wind resistance design method of vehicle-borne telescopic towers was studied in this paper. Firstly, the wind resistance design indexes and wind loads analysis method of telescopic towers were analyzed. Secondly, the method of combining wind resistance calculation with finite element simulation was proposed to evaluate the overturning resistance performance of a vehicle-borne telescopic tower under 12-level wind. Finally, the practical wind resistance performance of the vehicle-borne telescopic tower was verified by building a wind load simulation platform. The results show that the measured maximum shaking distance of the vehicle-borne telescopic tower is in good agreement with the simulated values, which verifies the methods proposed for improving the wind resistance design accuracy of the vehicle-borne telescopic towers. This paper provides a method with practical value for the accurate design of wind resistance for the complex vehicle-borne telescopic towers.

TN954