重组竹-钢填板螺栓节点承载力试验研究
发布时间：2018-07-18 17:15
【摘要】：通过不同侧材厚度、不同螺栓端距的重组竹-钢填板螺栓节点受拉试验,研究单向顺纹受拉时节点的受力性能、破坏模式及破坏机制,分析螺栓端距、侧材厚度等参数变化对节点力学性能的影响。结果表明:随着侧材厚度的增大,节点破坏模式由单纯的销槽承压破坏演变为同时发生螺栓受弯屈服和销槽承压破坏,节点承载力、延性系数均随之增大;节点承载力亦随螺栓端距加大而增大,但螺栓端距达到7d(d为螺栓直径)时,增加端距对节点承载力影响可忽略。将试验结果与《木结构设计规范》、《木结构设计手册》和美国木结构规范ANSI/AFPA NDS—2012承载力计算结果对比得知:《木结构设计手册》推荐的计算公式可以用于重组竹-钢填板螺栓连接承载力计算;其余两规范推荐的计算公式偏于保守,计算误差可达200%以上。
[Abstract]:Through the tensile test of the bolted joints with different side material thickness and different bolt end distance, the mechanical properties, failure mode and failure mechanism of the joints under unidirectional progressive tension are studied, and the bolt end distance is analyzed. The influence of side material thickness and other parameters on the mechanical properties of joints. The results show that with the increase of the thickness of the side material, the failure mode of the joint changes from the simple pin groove bearing failure to the bolt bending yield and pin groove bearing failure, and the joint bearing capacity and ductility coefficient increase with the increase of the side material thickness. The bearing capacity of the joint also increases with the increase of the bolt end distance, but when the bolt end distance reaches 7 d (d is the bolt diameter), the effect of increasing the end distance on the bearing capacity of the joint can be neglected. By comparing the test results with the results of the calculation of the bearing capacity of the wood structure design code, the Wood structure Design Manual and the American Wood structure Code ANSI / AFPA NDS-2012, it is concluded that the formula recommended by the Wood structure Design Manual can be used to recombine bamboo. Calculation of bearing capacity of bolt connection of steel fill plate; The formulas recommended by the other two specifications are conservative and the calculation error can reach more than 200%.
【作者单位】： 南京林业大学土木工程学院江苏省林业资源高效利用协同创新中心;桂林电子科技大学建筑与交通工程学院;
【基金】：国家自然科学基金(51578291) 林业科学技术成果国家级推广项目(2015) 江苏省高校优势学科建设工程
【分类号】：TU398.9
本文编号：2132598
[Abstract]:Through the tensile test of the bolted joints with different side material thickness and different bolt end distance, the mechanical properties, failure mode and failure mechanism of the joints under unidirectional progressive tension are studied, and the bolt end distance is analyzed. The influence of side material thickness and other parameters on the mechanical properties of joints. The results show that with the increase of the thickness of the side material, the failure mode of the joint changes from the simple pin groove bearing failure to the bolt bending yield and pin groove bearing failure, and the joint bearing capacity and ductility coefficient increase with the increase of the side material thickness. The bearing capacity of the joint also increases with the increase of the bolt end distance, but when the bolt end distance reaches 7 d (d is the bolt diameter), the effect of increasing the end distance on the bearing capacity of the joint can be neglected. By comparing the test results with the results of the calculation of the bearing capacity of the wood structure design code, the Wood structure Design Manual and the American Wood structure Code ANSI / AFPA NDS-2012, it is concluded that the formula recommended by the Wood structure Design Manual can be used to recombine bamboo. Calculation of bearing capacity of bolt connection of steel fill plate; The formulas recommended by the other two specifications are conservative and the calculation error can reach more than 200%.
【作者单位】： 南京林业大学土木工程学院江苏省林业资源高效利用协同创新中心;桂林电子科技大学建筑与交通工程学院;
【基金】：国家自然科学基金(51578291) 林业科学技术成果国家级推广项目(2015) 江苏省高校优势学科建设工程
【分类号】：TU398.9
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