| 摘要: |
| 随着全球气候变化的愈演愈烈，近年来风灾频率和
强度的上升趋势有增无减。树木作为台风灾害最直接的园林要
素，攸关城市生态安全，灾前树木抗风能力的科学预估至关重
要。通过实地调查收集上海市常见园林树种的形态数据，综合
构建形态特征指标体系，系统聚类归纳出棕榈形、卵圆形、塔
形、扇形和长卵圆形5种常见形态。结合实地测定，对树木进行
有限元建模，基于特征参数和风荷载模拟数据，分析不同形态
特征因子对树木所受风荷载的影响。加强对树木的形态结构特
征的研究，能够深入了解不同树形的树木在受风荷载作用时的
应力状态，确定其容易受损的部位，从而采取合理养护措施以
提高园林树木应对风灾危害的适应性 |
| 关键词: 园林植物 园林树木 树木形态 有限元模型 风
荷载 |
| DOI：10.19775/j.cla.2024.10.0106 |
| 投稿时间：2023-02-24修订日期：2023-12-29 |
| 基金项目:国家自然科学基金项目(32071824) |
|
| Morphological Characteristics and Wind Load ofLandscape Trees Based on Finite Element Model:Taking Shanghai as an Example |
| ZHANG Deshun,CHEN Luqiyao,YAO Manqing,CHEN Yingying,ZHANG Zhen |
| Abstract: |
| With the intensification of global climate change, the
frequency and intensity of wind disasters have been increasing
in recent years. Trees, as the most direct landscape elements of
typhoon disaster, are vital to urban ecological security. Scientific
estimates of trees' resilience to wind before disaster are the
crucial preventive measure. The morphological data of popular
landscape tree species in Shanghai were collected through field
survey, and the index system of morphological characteristics was
constructed comprehensively in this paper. Five popular tree species
including palm, oval, tower, fan-shaped and long-oval forms were
summarized by systematic clustering. Combined with the field
measurement, the finite element modeling of trees was carried out.
Based on the characteristic parameters and wind load simulation
data, the influences of different morphological characteristic factors
on the wind load of trees were analyzed. Strengthening the study on
the morphological and structural characteristics of trees can deeply
understand the stress state of different tree shapes under wind load
and determine the parts easily damaged, so as to take reasonable
maintenance measures to improve the adaptability of landscape
trees to deal with wind hazards. |
| Key words: landscape plant landscape tree tree form finite
element model wind load |
