(1 四川省建筑设计研究院有限公司, 成都 610095; 2 四川省建筑设计研究院有限公司复杂结构设计研究中心, 成都 610095; 3 天津大学建筑工程学院,天津 300072; 4 河北工程大学土木工程学院, 邯郸 056000)

摘要: 为明确胶合木钢填板-螺栓节点的半刚性特征,进行了考虑螺栓行距、列距、列数和胶合木截面高度等参数变化的胶合木钢填板-螺栓节点抗弯试验. 得到节点抗弯刚度后与欧洲木结构设计规范((BSEN 1995-1􀏑2004))、日本木质构造接合部设计手册里节点抗弯刚度公式计算结果进行对比,结果表明规范公式计算的节点抗弯刚度均小于试验值,通过修正规范公式可以得到更加准确的计算结果. 针对日本木质构造接合部设计手册的公式引入了滑移系数修正值和顺纹嵌入刚度修正值,修正后的公式准确度高,在胶合木结构设计的过程中可以用于计算节点的抗弯刚度并得到节点抗弯刚度折减系数.

关键词: 胶合木钢填板-螺栓节点; 抗弯刚度; 计算公式; 折减系数; 胶合木结构

中图分类号:TU366. 3 文献标志码:A 文章编号:1002-848X(2023)07-0125-05

DOI:10. 19701 / j. jzjg. SADI2325

Research of bending stiffness of glulam bolted joints with slotted-in steel plates

ZHAO Shixing1,2, HE Fei1,2, LIU Hongbo3,4, YANG Shuheng1,2, ZHAO Jingxian3, ZHOU Qiaoling1,2

(1 Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. , Chengdu 610095, China;2 Complex Structure Design and Research Center, Sichuan Provincial Architectural Design and Research Institute Co. , Ltd. ,Chengdu 610095, China; 3 Department of Civil Engineering, Tianjin University, Tianjin 300072, China;4 Department of Civil Engineering, Hebei University of Engineering, Handan 056000, China)

Abstract: In order to clarify the semi-rigid characters of glulam bolted joints with slotted-in steel plates, bendingexperiments were conducted considering the variation of bolt row spacing, column spacing, column number and sectionheight of glulam. Compared with experimental results of bending stiffness, the calculate results of bending stiffness formulain Design of timber structures (BSEN 1995-1􀏑2004) and Design Manual for Engineered Timber Joints were conservative.The results show that the bending stiffness calculated by the standard formula is less than the test value, and more accuratecalculation results can be obtained by modifying the standard formula. The modified value of slip coefficient and parallel-tograin embedded stiffness were introduced to modify the calculate formula in Design Manual for Engineered Timber Joints.This modified formula provides high accurate results, which could be used to calculate the bending stiffness of joints andobtain the reduction coefficient of bending stiffness of joints in the design of glulam structure.

Keywords:glulam bolted joints with slotted-in steel plate; bending stiffness; calculate formula; reduction factor; glulam structure

∗四川华西集团科技项目(HXKX2019 / 001).

第一作者:赵仕兴,硕士,教授级高级工程师,一级注册结构工程师,英国注册结构工程师,主要从事高层建筑结构、复杂结构的设计与研究,Email:316458931@ qq. com.

[引用本文] 赵仕兴,何 飞,刘红波,等. 胶合木钢填板-螺栓节点抗弯刚度研究[ J]. 建筑结构,2023,53(7):125-129. ZHAO Shixing,HE Fei,LIU Hongbo,et al. Research of bending stiffness of glulam bolted joints with slotted-in steelplates[J]. Building Structure,2023,53(7):125-129.