基于塔线体系风洞试验的输电塔风致响应计算

Wind-induced Response Calculation of the Tower in Transmission Tower-line System Based on Wind Tunnel Tests

针对输电塔-线体系中输电塔风致响应计算目前存在的不足,提出一种利用完全气弹模型风洞试验测得的若干测点位移来计算输电塔风致响应的方法,该方法同时考虑了气弹效应,塔线耦合效应,塔线体系风振中的非线性。以某输电塔线体系为例说明了该方法应用的全过程并得到了若干结论。拟合过程中采用假设检验的基本方法,得到在95%的置信度下其影响是显著的,验证了该方法的可靠性。该方法同样适用于其他结构,在完全气弹模型风致响应计算中有很大的工程实用价值。

A new method was proposed to calculate wind-induced response of the tower in transmission tower-line,with which all response of the tower could he calculated just from several displacement time history recorded in wind tunnel tests of full aero-elastic model. The aero-elastic effect, tower-line coupling and nonlinear of towe^line system was consid- ered. An example was provided to illustrate the whole process of this method and some useful conclusions were drawn. Hypothesis test was used in the fitting process,and the influence was significant under 95%, so the method was reliable. This method was also applicable to other structures,it was of great value on wind-induced response calculation of the full aero-elastic model.