树木抗风能力测试新方法

A New Method for Testing the Wind Resistance of Trees

摘要:

介绍一台由我国自行研发的树木抗风能力测试装备与方法，基于树木力学原理，通过将角传感器合理布置在树干上实时监测树干角度变化，结合实时风速，利用树木抗风能力预测分析系统，可测算该树能够承受的最大风速或最大风力等级。以2株樟Cinnamomum camphora为研究对象，采集了樟在风载荷作用下树干形变的角响应信息，测得樟能够承受的最大风速和临界断裂的破坏方式及断裂位置。本方法可为树木在大风或台风来临前是否需要防护提供科学依据，同时可为抗风性树种选择提供理论支撑。

Abstract:

In this paper, a self-developed tree wind resistance test analyzer and analysis method are introduced. Based on the principle of tree mechanics, the maximum wind speed that trees can withstand can be calculated by placing angle sensors reasonably on the tree trunk to monitor the angle change of the tree trunk under wind load in real time, combining with the real-time wind speed and using the prediction analysis software of tree wind resistance. This article takes two Cinnamomum camphora as research objects, collects the angular response information of their trunk deformation under wind load, and measures the maximum wind speed they can withstand, the critical damage mode, and the fracture location by the prediction analysis software. This method can provide a scientific basis for whether trees need protection before high winds or typhoons, and also provide theoretical support for the selection of wind-resistant tree species.