文献类型：期刊文献

中文题名：重组竹螺栓连接节点承载能力计算分析

英文题名：Calculation on bearing capacity of bolted connections for bamboo scrimber

作者：李霞镇[1,2] 任海青[2] 李贤军[1] 徐康[1] 钟永[2] 郝晓峰[1]

第一作者：李霞镇

机构：[1]中南林业科技大学材料科学与工程学院,长沙410004;[2]中国林业科学研究院木材工业研究所,北京100091

年份：2022

卷号：44

期号：4

起止页码：78-86

中文期刊名：土木与环境工程学报（中英文）

外文期刊名：Journal of Civil and Environmental Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：湖南省自然科学基金(2020JJ5971);湖南省林业科技创新项目(XLK201903);湖南省教育厅优秀青年基金(19B609);国家自然科学基金(31800479)。

语种：中文

中文关键词：重组竹钢夹板;螺栓连接;承载能力;Foshci理论模型;木结构

外文关键词：steel-bamboo scrimber(BS)-steel;bolt connection;bearing capacity;Foshci's theory model;wood structure

分类号：TU366.1

摘要：基于重组竹螺栓连接承载性能,分析评价了现有木结构设计规范对重组竹螺栓连接承载能力预测的适用性。采用正交设计法对16组48个重组竹钢夹板单螺栓连接节点试样进行试验,验证了Foshci理论模型对重组竹钢夹板单螺栓连接节点的适用性,揭示了螺栓直径、端距及主构件厚度等因素对节点承载能力的影响规律,分析了GB 50005和European 5规范对重组竹钢夹板螺栓连接承载能力预测的准确性。研究结果表明:Foschi理论模型能够反映节点的线弹性、屈服后阶段的变化特征,能够较全面地反映重组竹钢夹板螺栓连接节点的整个受力过程。螺栓连接承载力受螺栓直径、主构件厚度和端距3个因素共同影响,但当节点达到最小尺寸设计要求时,承载能力受螺栓直径影响的作用最为明显。Eurocode 5对重组竹钢夹板螺栓连接节点的承载预测能力偏保守,而GB 50005预测能力存在安全富余的空间,能较好地预测重组竹钢夹板螺栓连接的承载能力。
Based on analysis of the bearing capacity of the bolted connections for bamboo scrimber,the applicability of the wood structure design codes in calculating the bearing capacity of the bolted connections for bamboo scrimber was evaluated.A total of 48 specimens in 16 groups designed by orthogonal scheme were tested in this study.Firstly,the applicability of Foshci's theory model was verified.Then,the effects of bolt diameter,end distance and main component thickness on the bearing properties of bolt connections were analyzed.Finally,the accuracy of design codes GB 50005 and European 5 in calculating the bearing capacity of the bolted steel-BS-steel connections was evaluated.The result showed that Foschi's theory model could reflects the change characteristics of both the linear elasticity and post-yield phases,which also expressed depicted the whole bearing processes of the connections,comprehensively.The bearing capacity is affected by bolt diameter,main component thickness and end distance,and it is affected by the bolt diameter most obviously when the connection meets the minimum requirements of size design.Besides,Eurocode 5 is so conservative in calculating the bearing capacity of the bolted steel-BS-steel connections.There is a safety reserve in calculating the bearing capacity by GB 50005,which is more suitable for calculating the bearing capacity of the bolted steel-BS-steel connections than Eurocode 5.