[1]方士东,王志涛,郭小东,等.抬梁式空间木结构古建筑有限元建模方法[J].西安建筑科技大学学报(自然科学版),2024,56(05):751-761.[doi:10.15986.j.1006-7930.2024.05.014]
　FANG Shidong,WANG Zhitao,GUO Xiaodong,et al.Research on finite element modeling method for ancient wooden buildings in postandlintel construction[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(05):751-761.[doi:10.15986.j.1006-7930.2024.05.014]
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抬梁式空间木结构古建筑有限元建模方法
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年05期
页码:
751-761
栏目:
出版日期:
2024-10-28

文章信息/Info

Title:
Research on finite element modeling method for ancient wooden buildings in postandlintel construction
文章编号:
1006-7930(2024)05-0751-11
作者:
方士东1; 2; 王志涛1; 2; 3; 郭小东1; 2; 3; 马东辉1; 2; 3
（1北京工业大学 城市建设学部，北京 100124；2木结构古建筑安全评估与灾害风险控制国家文物局重点科研基地，北京 100124；3北京市历史建筑保护工程技术研究中心， 北京 100124）
Author(s):
102;  102); font-family: Arial;  Verdana;  sans-serif; font-size: 12px; background-color: rgb(255;  255;  255);">FANG Shidong1; 2; WANG Zhitao1; 2; 3; GUO Xiaodong1; 2; 3; MA Donghui1; 2; 3
（1Faculty of Architecture, Civil and Transportation Engineering，
Beijing University of Technology, Beijing 100124, China;
2Key Scientific Research Base of Safety Assessment and Disaster Mitigation for Traditional Timber Structure
(Beijing University of Technology), State Administration for Cultural Heritage, Beijing 100124, China;
3Engineering Research Center for Conservation of Beijing Historic Buildings, Beijing 100124, China）
关键词:
古建筑木结构; 榫卯节点; 屋顶; 数值模拟; 空间结构
Keywords:
ancient wooden structures;  mortise and tenon joints;  roofs;  numerical simulations;  spatial structure
分类号:
TU366.2
DOI:
10.15986.j.1006-7930.2024.05.014
文献标志码:
A
摘要:
基于空间抬梁式木结构古建筑拟静力试验结果，以榫卯缝隙、摩擦系数及屋顶存在与否为变量，构建六组有限元数值模型，探讨这些变量对模型精度的影响.研究结果表明：所建立的数值模型能够准确模拟结构在加载过程中的变形特性；结构滞回曲线为反“S”形，具有明显的“捏缩效应”，与木结构的实际耗能特征相符；在受力性能方面，燕尾榫节点之间的缝隙会降低结构的承载力；结构的承载力和刚度随摩擦系数的增大而增大；提出的两种屋顶简化方法使结构的承载力分别增加20%和60%.通过对比明确了抬梁式空间木结构数值模拟中影响其精度的关键因素，为后续木结构数值模型的建立与修正提供了重要的参考依据.
Abstract:
Based on the results of quasistatic tests on ancient wooden structures with spatial lifting beams, six sets of finite element numerical models were constructed with mortise and tenon joints, friction coefficient, and the presence or absence of roofs as variables, and the influence of these variables on model accuracy was explored. The research results demonstrate that the established numerical model can accurately simulate the deformation characteristics of the structure during the loading process. The hysteresis curve is inverse Sshaped and exhibits a clear “pinching effect,” which aligns with the actual energy consumption characteristics of wooden structures. Regarding stress performance, the simplification of the gap between mortise and tenon joints and the roof has a significant impact on the bearing capacity and stiffness of the model. Conversely, the variation of friction coefficient between wood has a relatively small impact on the mechanical performance of the model. This study elucidates the pivotal elements that influence the precision of numerical simulations of spatial timber structures through a comparative analysis, thereby furnishing a crucial reference for the establishment and rectification of subsequent numerical models of timber structures.

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备注/Memo

备注/Memo:
收稿日期:20240430修回日期:20240902
基金项目:北京市教委市自然科学联合基金（KZ202010005012）
第一作者:方士东（1997—），男，博士生，主要从事木结构抗震性能等方面研究． Email：18205340445@163com
通信作者:郭小东（1977—），男，博士，教授，主要从事木结构抗震性能等方面研究． Email：guoxd7797@163com
更新日期/Last Update: 2024-11-22