横纹增强胶合木柱-钢梁节点受弯承载力试验研究  

Experimental study on flexural capacity of cross⁃grain reinforced glued laminated timber column⁃steel beam nodes

作　　者：王怀 陈伯望 申欣洋 张子辉 WANG Huai;CHEN Bowang;SHEN Xinyang;ZHANG Zihui(College of Civil Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]中南林业科技大学土木工程学院,长沙410004

出　　处：《建筑结构》2025年第6期109-116,共8页Building Structure

基　　金：湖南省重点研究计划(2024JK2048)。

摘　　要：提出了胶合木柱-钢梁框架结构体系,通过对胶合木柱植筋,提高结构的局部抗压能力。完成了11个胶合木柱-钢梁框架节点的单调加载试验,研究了植筋直径、植筋数量等因素对节点受弯承载力的影响。研究表明,胶合木柱-钢梁节点有较高的受弯承载力和抗弯刚度,节点延性好;随着植筋直径和数量增加,节点受弯承载力和抗弯刚度增大,植筋直径为12、16mm的节点比无植筋增强节点屈服弯矩提高了35.62%~80.82%,受弯承载力提高了13.35%~36.74%,抗弯刚度提高了24.64%~75.31%;增加植筋的根数比增大植筋的直径对节点增强的效果更明显。最后提出了节点受弯承载力计算公式,该公式计算的节点受弯承载力理论值与试验值较为吻合。The glued laminated timber column⁃steel beam frame system was proposed,and the local compression capacity of the glued laminated timber column was improved by embeded steel bars.The monotonic loading tests of 11 glued laminated timber column⁃steel beam frame nodes were completed,and the effects of the embedded steel bar diameter and the number on the flexural capacity of the nodes were investigated.The results show that the glued laminated timber column⁃steel beam node has high flexural capacity and flexural stiffness,and the node has good ductility.With the increase of embedded steel bar diameter and number,the flexural capacity and flexural stiffness of the node increase,and the nodes with embeded steel bar diameter of 12mm and 16mm have 35.62%~80.82%higher yield strength,13.35%~36.74%higher flexural capacity,the bending stiffness increased by 24.64%~75.31%than the nodes without embeded steel bar strengthening.Increasing the number of embedded steel bars is more effective than increasing the diameter of embedded steel bars in strengthening the nodes.Finally,the calculation formula for flexural capacity of the node was proposed,and the theoretical value of flexural capacity of node calculated by the formula is in good agreement with the test value.

关 键 词：胶合木柱-钢梁节点 横纹植筋 破坏模式 受弯承载力 抗弯刚度 

分 类 号：TU398.6[建筑科学—结构工程]