基于Midas Gen的木廊桥结构特性计算研究  

Research on the calculation of structural characteristics of timber lounge bridges based on Midas Gen

作　　者：杨天玲 胡安杰 陈义东 郑大伟 YANG Tian-ling;HU An-jie;CHEN Yi-dong;ZHENG Da-wei(Institute of Intelligent Manufacturing,Zhejiang Institute of Mechanical&Electrical Engineering,Hangzhou 310053,China;China United Engineering Co.,Ltd.,Hangzhou 310052,China)

机构地区：[1]浙江机电职业技术大学智能制造学院,浙江杭州310053 [2]中国联合工程有限公司,浙江杭州310052

出　　处：《空间结构》2024年第4期63-68,20,共7页Spatial Structures

基　　金：中国高校产学研创新基金“制造实训车间信息交互模型构建与应用研究”(2023DT005);2024年度科教融合孵化课题“激光选区熔化熔池图像实时处理技术研究”(A-0271-24-207)。

摘　　要：以中国古建筑木结构中常见的榫卯节点为研究对象,在其结构特性研究基础上,引入反映榫卯结构特性的弹性节点单元,采用Midas Gen软件建立适合木结构古建筑特点的三维有限元计算模型.调整榫卯节点的弯矩系数,寻找最优结构截面参数.建立典型古建筑廊桥结构模型,对比模型分析结果和现场实测数据,确认模拟分析方法的可行性,并由此得到木结构廊桥的振动模态,验证了各构件截面参数的合理性.结果表明,Midas Gen软件可以为木结构古建筑的结构设计、抗震性能分析、加固维护提供相对可靠的模拟计算方法.The common mortise-tenon joints in Chinese ancient timber structures are set as the research object.On the basis of their structural characteristics,the optimal structural section parameters are found by introducing the elastic node element which reflects the characteristics of mortise-tenon structure.Midas Gen is used to establish finite element model suitable for the characteristics of ancient timber structures,adjusting the bending moment coefficient of the mortise-tenon joint.The structural model of typical ancient lounge bridge is established,and the analysis results are compared with the field measured data,confirming the feasibility of the simulation method.The vibration mode of the timber structure of the bridge is obtained,and the rationality of section parameters of each timber bridge member is verified.It is shown that the simulation method is suitable for ancient timber structures by using Midas Gen.The simulation analysis can provide a relatively reliable method for the structural design,seismic performance analysis,reinforcement and maintenance of ancient timber structures.

关 键 词：古建筑 木结构 廊桥 有限元模型 弹性节点 抗震性能 榫卯连接 

分 类 号：TU366.2[建筑科学—结构工程]