传统木结构单向直榫节点转动弯矩-转角关系理论分析  

Theoretical Analysis on Moment-rotation Relationship of Straight Mortise-tenon Joints for Chinese Traditional Wooden Buildings

作　　者：谢启芳[1] 王龙[1] 郑培君 张利朋 钱春宇[3] XIE Qifang WANG Long ZHENG Peijun ZHANG Lipeng QIAN Chunyu(School of Civil Engineering, Xi＇ an University of Architecture ~ Technology, Xi＇ an 710055, China China Construction Seventh Engineering Division Co, Ltd, Zhengzhou 450004, China China Jikan Research Institute of Engineering Investigations and Design Co, Ltd, Xi＇ an 710043, China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]中国建筑第七工程局有限公司,河南郑州450004 [3]机械工业勘察设计研究院有限公司,陕西西安710043

出　　处：《湖南大学学报（自然科学版）》2017年第7期111-117,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51278399);陕西省自然科学基础研究计划重大基础研究项目(2016ZDJC-23);国机集团科技发展基金资助项目(13-192);西安建筑科技大学创新团队资助计划项目~~

摘　　要：以传统木结构中最简单的单向直榫节点为研究对象,分析其受力机理,推导了单向直榫节点转动弯矩-转角理论计算公式,并借助试验数据对该公式进行了验证,理论计算结果与试验结果吻合较好.以理论公式为基础,对影响单向直榫节点转动弯矩的参数进行了分析,结果表明:当榫头长度与柱径之比小于1时,榫头长度的增加能显著提高单向直榫节点的转动弯矩和初始转动刚度;榫头宽度的增加同样能够提高单向直榫节点的转动弯矩以及初始转动刚度;摩擦系数的增大能够在一定程度上提高节点的转动弯矩,但对节点的初始转动刚度影响不大.研究结果可为传统木结构的抗震性能评估和修缮加固提供一定的参考.The force mechanism was analyzed and the moment-rotation calculation formulas were deduced for the straight mortise-tenon joints. Good agreement between the predictions and test results was observed.Based on the moment-rotation calculation formulas, the factors affecting the rotational stiffness of the straight mortise-tenon joints were analyzed.The results show that-the rotational moment and initial ro- tational stiffness are increased significantly with the increase of the length of a tenon when the ratio of the length to the column diameter is less than l^the rotational moment and initial rotational stiffness are also improved with the increase of the width of a tenon; the rotation moment of the joint is increased to a certain extent with the increase of the friction coefficients,but the initial rotational stiffness is affected little.The conclusins are helpful in the seismic performance assessment and reinforcement of the traditional wooden buildings.

关 键 词：传统木结构 单向直榫节点 受力机理 弯矩-转角关系 理论分析 

分 类 号：TU366.2[建筑科学—结构工程]