Study on Wind Resistance of Popular Landscape Tree Species in Shanghai Based on Finite Element Model
Wind damage is one of the main natural disasters for landscape plants.The fall,break and uproot of landscape tree caused by typhoon frequently occurs every year,which seriously threatens the ecological security of the urban ecosystem.The morphological difference is one of dominant main factor affecting the stability of trees.Taking 15 popular landscape trees in Shanghai as research objects,the impact of different canopy characteristics on tree stability and the sensitivity of different tree shapes to changes in branching characteristics was explored in this paper.The natural vibration and wind-induced damage of trees are simulated through the Finite Element Model of the target species,and the mechanical response eigenvalue of trees are calculated.Then,the critical wind speed of tree fracture is predicted by combining the failure bending moment of tree fracture and the change law of tree bending moment under different wind speed conditions,and the wind resistance of different tree species is comprehensively compared combined with the field survey results of post disaster.
landscape plantfinite elementwind resistancelandscape treestree form
NETL
NSTL
万方数据
