古建筑榫卯节点刚度分析

研究古建筑榫卯节点刚度取值,对古建筑的保护修缮加固具有重要意义.以木结构建筑为例,从基本承重构件梁柱的微元开始,导出木梁木柱的挠曲线方程,用弹簧作为榫卯节点约束,以边界条件输入,导出榫卯节点刚度值；以钟楼为工程实例,建立ANSYS有限元模型,对结果和实测数据进行对比分析.结果表明,本文提出的计算方法,适用于木结构古建筑的榫卯节点刚度分析计算.

The analysis about node stiffness of mortise and tenon in ancient building

In order to protect,recover,reinforce ancient building,the studying that how to decide the value about the node stiffness of mortises and tenon in ancient architecture has important significance.This paper takes the timber structure as an example,starts from the infinitesimal components of timber beams and columns which are the basic load-bearing construction to export their deflection curve equation,and uses the spring as the constraint of mortise and tenon which is as the boundary conditions to be entered to get the stiffness value of mortise and tenon;and uses the Clock Tower as an engineering example to establish the ANSYS finite element model,and analyzes the results and measured data.