变坡跑道的机场净空模型及其解析式分析

Research on Airport Clearance Model and Its Analytical Formula of Variable-Slope Runway

提出了一种变坡跑道的机场净空模型,分析其解析式,提高了机场净空区建筑物超高评估工作的效率与精度。根据机场跑道参数建立了机场净空三维模型,考虑跑道纵坡和机场等级对障碍物限制面的影响,计算出各限制面的平面限制范围。在此基础上构建机场净空高程模型,设计算法实现待评价点所在限制面类型的判断及限高计算。将构建的机场净空三维模型及高程模型应用到实际算例中,验证了模型的有效性,净空限高计算精度和效率得到了提高。并以Cesium为开发平台实现了净空模型的可视化显示,便于工作人员快速直观地对建筑物是否超过净空限制面的控制进行判断,有效地保障机场航空的安全运输。

A model of airport clearance with a variable-slope runway is proposed,and its analytical formula is studied to improve the efficiency and accuracy of building super elevation evaluation in the airport clearance area.First,an airport clearance 3D model is established according to the airport runway parameters.The plane limitation range of each limit surface is calculated by considering the influence of runway slope and airport grade on the obstacle limit surface.Then,the clearance elevation model is constructed,and an algorithm is designed to determine the type of limit surface where the point is on,and calculate the limit height.The constructed airport clearance 3D model and elevation model are applied to the actual study,which verifies the validity of the model,and the accuracy and speed of the clearance limit height calculation are improved.Furthermore,the visualization of the clearance model is realized based on Cesium,which is convenient for the staff to quickly judge whether the building exceeds the clearance limit.