减振控制技术在林木风灾中的应用展望

Application prospect of vibration reduction and control technology in forest wind damage

减振控制技术在土木工程领域的应用相当广泛,是一种理论和实践上都比较成熟的技术。风灾对建筑的破坏作用相当巨大,林木(尤其是千年珍贵古树)也不可避免地会受到风灾的严重威胁。分析了当前减振控制技术在林木风灾中的实际应用较少、使用范围不广的原因,进而提出了林木风致振动及林木抗风减振的概念,并对其作了较为全面的阐述,展望了林木抗风减振技术在林业中的应用前景,指出了建立基于随机振动理论的林木抗风减振控制系统的可行性。研究内容及方法是对森林保护学科的完善与发展,是在林木风灾保护方法和措施方面开辟的另一条重要途径。

The vibration reduction and control technology,which is widely used for civil engineering,is quite mature both in theory and in practice.Wind damage to building is quite huge,and forest,particularly millennial precious old tree,is also severely threated inevitably by it.The cause of the less and not broader practical application of vibration reduction and control technology in forest wind damage at present was analyzed in this paper.And then both a concept of wind-induced vibration of forest,and a concept of vibration reduction and wind-resistance of forest were put forward,and the more comprehensive explanation of these concepts were carried out.Application prospect of vibration reduction and control technology in forest wind damage was looked into the future.Feasibility to establish vibration reduction and control system for forest based on random vibration theory was pointed out.The content and method of this paper are a perfection and development to forestry conservation discipline,and are another important way to open up protection method and measure of forest wind damage.