轻型木结构建筑墙体与屋盖系统阻尼比动态参数测试研究  

Test and Research on Dynamic Parameters of Damping Ratio of Wall and Roof system of Light Wood Frame Construction

作　　者：沈肇雨 王正 周晶 SHEN Zhao-yu;WANG Zheng;ZHOU Jing(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing Jiangsu 210037,China)

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037

出　　处：《林业机械与木工设备》2022年第5期25-29,共5页Forestry Machinery & Woodworking Equipment

摘　　要：依据结构动力学原理,采用瞬态激励法对一幢欧式和北美式轻型木结构建筑墙体及其屋盖系统进行阻尼的测算与分析。研究结论表明,欧式轻型木结构建筑的墙体相比于北美式的墙体较厚,其阻尼比更大,减振性能更好。同时墙体的木龙骨在结构抗震层面起到很大作用,可通过减小木龙骨间距以提升墙体整体减振性能;同一木结构建筑外墙间的阻尼比值差距不大,而同一建筑内墙的阻尼比要大于外墙的阻尼比,内墙的减振性能则好于外墙;欧式轻型木结构建筑墙体的阻尼比值明显高于其屋盖阻尼比值。上述以期为提高轻型木结构建筑减振性能的工程应用提供参考。Based on the principle of structural dynamics,the damping of the wall and roof system of a European and North American light wood frame construction was calculated and analyzed using the transient excitation method.The research results show that the walls of European light wood frame construction are thicker than those of North American construction,with a greater damping ratio and better vibration damping performance.At the same time,the wooden keels of the wall play a great role in the seismic level of the structure.The overall vibration reduction performance of the wall can be improved by reducing the spacing between wooden keels;there is little difference in the damping ratio between the exterior walls of the same wood structure building,but the damping ratio of the interior wall of the same building is greater than that of the exterior wall,and the damping performance of the interior wall is better than that of the exterior wall;the damping ratio of European light wood frame construction wall is significantly higher than that of its roof.The above are expected to provide reference for improving the engineering application of the vibration-reducing performance of light wood frame construction.

关 键 词：轻型木结构 墙体 屋盖 阻尼比 测试 

分 类 号：TU366.2[建筑科学—结构工程]