轻钢龙骨-黄麻纤维生物基面板组合墙体抗震性能分析  

Analysis of seismic performance of the light-gauge steel and jute fiber bio-based panel composite wall

作　　者：吴长[1,2] 陈星宏 刘家乐 WU Chang;CHEN Xing-hong;LIU Jia-le(School of Civil Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Western Center of Disaster Mitigation in Civil Engineering of Education,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2022年第5期126-133,共8页Journal of Lanzhou University of Technology

基　　金：国家重点研发计划(2019YFD1101003);甘肃省建设科技攻关项目(JK2021-41)。

摘　　要：为推动生物基纤维材料在绿色装配式生态村镇住宅中的应用,将黄麻纤维生物基面板作为轻钢龙骨墙体的覆面板材料,形成装配式组合墙体.通过理化性能实验和SEM实验测定黄麻纤维生物基面板的弹性模量和静曲强度,并分析面板的微观构造组成.利用ANSYS/Structural有限元软件建立基于半刚性节点连接的组合墙体计算简化模型,分析不同面板厚度对组合墙体抗震耗能性能的影响.结果表明:黄麻纤维生物基面板的弹性模量和静曲强度要远大于传统的OSB板;增加黄麻纤维生物基面板的厚度能增强组合墙体的塑性变形能力,减小刚度退化幅度,提高刚度残余;组合墙体的抗震性能和能量耗散能力更优.In order to promote the application of bio-based fiber materials in green prefabricated ecological village houses,jute fiber bio-based panels are used as the cladding materials of the light-gauge steel wall to form prefabricated composite wall.The elastic modulus and static bending strength of jute fiber bio-based panels were measured through physical and chemical properties experiment and SEM experiment,and the microstructure composition of the panel was analyzed.The simplified calculation model of composite wall based on semi-rigid node connection was established by using ANSYS/Structural finite element software,and the influence of different panel thickness on the seismic energy dissipation performance of composite wall was analyzed.The results show that the elastic modulus and static bending strength of the jute fiber bio-based panel are much greater than that of the traditional OSB panel.Increasing the thickness of the jute fiber bio-based panel can enhance the plastic deformation ability of the composite wall,reduce the extent of stiffness degradation,and increase the residual stiffness.The combined wall has better seismic performance and energy dissipation capacity.

关 键 词：轻钢龙骨墙体 生物基面板 刚度退化 抗震耗能 

分 类 号：TU392.1[建筑科学—结构工程]