线路微地形微气象风环境评估

Microtopographic Micrometeorological Wind Environment Assessment of the Line

在某新建线路工程的设计过程中,应合理选择路径,正确选定微地形点的气象条件。根据评估结果,N13~16均处于地形较高的山坡或山峰附近,在多个风向角下均具有较大的风速比,风加速效应明显。针对评估结果,结合直线塔受力特征,在微地形条件下,杆塔风荷载得到放大的塔位,进行前端设计校验,优化设计,对降低工程造价,实现精细化设计,保障系统安全运行具有较重大的意义。

In the design process of this project,reasonable selection of the path,the correct selection of microtopographic point meteorological conditions.According to the evaluation results,N13-16 is located near the slopes or peaks with high topography,and has a large wind speed ratio at multiple wind angles,with obvious wind acceleration effect.According to the evaluation results,combined with the stress characteristics of the linear tower,we targeted the tower where the wind load of the tower is amplified under the micro-terrain condition,carried out front-end design verification and optimization design,which is of great significance for reducing the project cost,realizing the fine design and ensuring the safe operation of the system.