传统木结构榫卯节点模型化试验研究

发布时间：2018-06-25 06:36

本文选题：传统木结构 + 榫卯节点　；参考：《昆明理工大学》2016年硕士论文

【摘要】：传统木结构建筑是中华民族优秀的历史文化遗产组成部分,在世界上独树一帜。榫卯连接是木结构区别于其他形式结构的标志性特点。榫卯节点属于半刚性连接,它使得木结构建筑具有良好的抗震消能作用。建立木结构节点区恢复力特性模型对发展木结构抗震理论具有重要的意义。木结构节点区恢复力特性与木材嵌压摩擦机理密切相关,因此研究摩擦对榫卯节点抗震性能的影响具有重要的理论意义。选取透榫、半榫、银锭抱肩榫和大头榫四种典型节点,通过改变榫卯节点侧面的紧密程度来改变榫头和卯口的摩擦力,分别采用松木和杉木制作试件。通过对不同松紧程度的试件进行低周往复试验,研究各类节点的抗震性能。试验得到了各类型的宽松、适中、紧密节点的破坏形态、弯矩-转角滞回曲线、弯矩-转角骨架曲线、刚度退化规律、节点变形能力、耗能能力、拔榫量和节点应变等抗震性能。试验结果表明：透榫的破坏形式主要为榫头横纹压屈和榫头折断,半榫的破坏形式主要为榫头拔榫,银锭抱肩榫的破坏形式主要为榫颈和榫额处横纹压屈,大头榫的破坏形式主要为榫头拔榫和卯口劈裂。所有试件梁、柱基本无变形。各节点的滞回曲线均呈具有明显捏拢效应的反Z形,节点的承载力、耗能能力和转动刚度基本上为透榫最大,银锭抱肩榫次之,大头榫又次之,半榫最小。木结构榫卯节点具有良好的变形能力,除透榫以外,其他类型节点的极限转角基本上大于0.11rad。银锭抱肩榫节点由于其特殊的构造,拔榫量较小。随着榫卯节点紧密程度的增大,节点的承载力、耗能能力、转动刚度、拔榫量增加,变形能力降低。基本上,松木试件的刚度、承载能力和耗能能力较杉木试件更好。
[Abstract]:The traditional wooden architecture is an outstanding part of the historical and cultural heritage of the Chinese nation, and is unique in the world. Tenon joint is the landmark characteristic of wood structure which is different from other forms of structure. The joint of tenon and joint belongs to semi-rigid connection, which makes the wooden structure have good anti-seismic energy dissipation function. It is of great significance to develop the seismic theory of wood structure by establishing the restoring force characteristic model of the joint zone of wood structure. The characteristics of restoring force in the joint area of wood structure are closely related to the friction mechanism of wood embed, so it is of great theoretical significance to study the effect of friction on the seismic behavior of joint. Four typical joints of tenon, half tenon, silver ingot with shoulder tenon and large head tenon are selected. The friction between tenon and joint is changed by changing the compactness of the side of mortise and joint, and pine and Chinese fir are used to make the test pieces, respectively. The seismic behavior of various joints was studied by low cycle reciprocating test of specimens with different tightness. Various types of loose, moderate, tight joint failure patterns, moment-angle hysteretic curve, moment-corner skeleton curve, stiffness degradation law, joint deformation capacity, energy consumption capacity, are obtained. Tenon and joint strain and other seismic performance. The test results show that the failure forms of tenon and tenon are mainly tenon and tenon fracture, half tenon is mainly tenon and tenon, and the failure form of silver ingot with shoulder tenon is mainly tenon neck and cross line buckling at the mortise forehead. The main failure form of mortise is mortise and mortise. All the beams and columns have no deformation. The hysteretic curves of each joint show an inverse Z shape with obvious pinch effect. The bearing capacity, energy dissipation capacity and rotational stiffness of the joints are basically the highest, followed by the silver ingot shoulder tenon, the large head tenon and the half tenon. With the exception of tenon and tenon, the ultimate corner of other joints is basically greater than 0.11rad. Because of its special structure, the toning capacity of silver ingot shoulder joint is small. With the increase of tenon joint tightness, the bearing capacity, energy dissipation capacity, rotational stiffness, tenon and tenon capacity of the joint are increased and the deformability is decreased. Basically, the stiffness, bearing capacity and energy dissipation capacity of the pine specimen are better than that of the Chinese fir specimen.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU366.2

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