江南地区传统木构建筑半榫节点受力能研究.docVIP

江南地区传统木构建筑半榫节点受力性能研究 　　摘要：对江南地区传统木构建筑中常见的半榫节点受力性能进行了试验和理论研究.通过试验获取该种榫卯节点在低周反复荷载作用下的破坏模式、滞回曲线、骨架曲线、转角刚度.结果表明：该种榫卯节点的滞回曲线基本上都呈Z形，具有明显的捏拢特性.该种榫卯试件均经历了弹性阶段、屈服阶段和破坏阶段.此外，综合考虑半榫节点的接触非线性和木材的材料非线性，采用ANSYS非线性有限元方法对其受力性能进行分析，有限元分析结果和试验结果较为吻合，通过分析，获取了半榫节点的平面内（竖向）转角刚度、平面外（水平）转角刚度和扭转刚度的相互关系，可近似归纳为1.4∶1.0∶1.1.研究结果可为江南地区传统木构建筑的计算分析及保护修缮提供理论基础. 中国论文网 /4/viewhtm　　关键词：江南地区；传统木构建筑；半榫；受力性能；非线性有限元 　　中图分类号： TU 366.2文献标识码：A 　　Abstract：The mechanical properties of the Ban mortisetenon joints of the ancient traditional timber buildings in the South Yangtze River Regions were studied with the experimental and theoretical methods. The tested mortisetenon joints include three Ban mortisetenon joints. The failure modes， the hysteretic curves， the skeleton curves， the rotation rigidities of this kind of mortisetenon joint under low cyclic loading were obtained. The results show that the hysteretic curves of the Ban mortisetenon joints appear to be the Z shape and have the obvious pinch effects. During the process of the test， these mortisetenon joints orderly pass through the elastic stage， the yield stage and the failure stage. Furthermore， with the consideration of the nonlinear contact influence of the mortisetenon joint and the nonlinear stressstrain behavior of the timber material， the mechanical properties of the Ban mortisetenon joints were analyzed by ANSYS software. The theoretical results agree well with the experimental results. The relationship of inplane rotational rigidity， the outofplane rotational rigidity and the tortional rigidity of the Ban mortisetenon joint is achieved， the ratio of them was 1.4∶1.0∶1.1. The results can provide the theoretical basis for computing analysis and repair design of the traditional timber buildings in the South Yangtze River Regions. 　　Key words： South Yangtze River Regions；traditional timber building；ban mortisetenon joint；mechanical property；nonlinear finite element method 　　江南地区是我国古代文明的发祥地之一，这里先后孕育了河姆渡文化、马家浜文化、良渚文化、吴越文化和江南文化.江南地区传统木构建