胶合木梁柱螺栓-钢填板节点转动性能研究

发布时间：2018-05-06 10:49

本文选题：胶合木 + 梁柱螺栓节点　；参考：《建筑结构学报》2014年09期

【摘要】：通过4组22个胶合木梁柱螺栓-钢填板足尺节点试件的单调和低周反复加载试验以及有限元数值模拟研究梁柱螺栓-钢填板节点的转动性能。试验研究表明,胶合木梁柱螺栓-钢填板节点性能主要取决于螺栓和螺孔周边木材的承压能力;节点加载初期的螺孔间隙和加载后期木材横纹裂缝张开均会导致节点刚度显著下降;同等条件下,节点初始刚度和极限弯矩随螺栓直径的减小而减小,节点初始刚度随螺栓边距的增加而减小。对试件进行有限元分析结果表明,基于有限元分析软件建立的节点三维实体模型对于节点的初始刚度和极限弯矩有较好的模拟精度(误差20%以内)。此外,模型参数分析表明,在更大取值范围内(螺栓直径12~28 mm,螺栓边距30~70 mm),螺栓直径和边距对节点性能的影响与试验结果一致。
[Abstract]:In this paper, the rotational properties of complete plate joints with Liang Zhu bolt and steel filler plate were studied by means of monotonic and low cycle repeated loading tests and finite element numerical simulation of 22 groups of 22 glued wood bolt-steel filled plate joints. The experimental results show that the performance of the bolt-steel filler joints of glued wood mainly depends on the bearing capacity of the bolts and the wood around the screw holes. The initial stiffness and ultimate bending moment of joints decrease with the decrease of bolt diameter under the same conditions. The initial stiffness of the joint decreases with the increase of bolt edge distance. The results of finite element analysis show that the 3D solid model based on the finite element analysis software has a good simulation accuracy (within 20% error) for the initial stiffness and ultimate bending moment of the joints. In addition, the model parameter analysis shows that the effect of bolt diameter and edge distance on the performance of the joint is consistent with the test results in a larger range (1228 mm bolt diameter and 3070 mm bolt edge distance).
【作者单位】：同济大学建筑工程系;
【基金】：国家自然科学基金项目(51008221)
【分类号】：TU398.9

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