[1]魏洋,李宁,吴刚,等.开孔钢板型竹混凝土连接件荷载滑移性能[J].东南大学学报(自然科学版),2017,47(6):1167-1173.[doi:10.3969/j.issn.1001-0505.2017.06.014]
 Wei Yang,Li Ning,Wu Gang,et al.Load-slip behavior of perforated plate connections of bamboo-concrete[J].Journal of Southeast University (Natural Science Edition),2017,47(6):1167-1173.[doi:10.3969/j.issn.1001-0505.2017.06.014]
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开孔钢板型竹混凝土连接件荷载滑移性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第6期
页码:
1167-1173
栏目:
土木工程
出版日期:
2017-11-20

文章信息/Info

Title:
Load-slip behavior of perforated plate connections of bamboo-concrete
作者:
魏洋12李宁1吴刚2端茂军1李国芬1
1南京林业大学土木工程学院, 南京 210037; 2东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Wei Yang12 Li Ning1 Wu Gang2 Duan Maojun1 Li Guofen1
1College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China
2Key Laboratory for Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
组合结构 竹-混凝土 连接件 推出试验 数字图像相关法(DIC)
Keywords:
composite structure bamboo-concrete connector push-out test digital image correlation method(DIC)
分类号:
TU375.4
DOI:
10.3969/j.issn.1001-0505.2017.06.014
摘要:
为研究开孔钢板型竹-混凝土剪力连接件的力学行为,对3个开孔钢板型连接件进行了静载推出试验,并采用位移计测量法和数字图像相关法对界面滑移进行测量.试验结果表明,试件破坏时开孔钢板与竹材之间未发生明显破坏,开孔钢板孔内混凝土抗剪榫及钢板下部混凝土支撑面发生破坏,破坏过程未见剧烈的破坏反应,破坏模式属于延性破坏.连接件的极限承载力标准差较小,承载力学性能稳定.剪力件两侧滑移沿高度整体分布规律一致,表明开孔钢板剪力件的剪力传递均匀,荷载-滑移曲线显示其具有很好的滑移变形能力.开孔钢板型竹-混凝土剪力连接件的抗剪承载力主要由开孔钢板孔内混凝土抗剪榫及钢板下部混凝土支撑面提供,特定的钢-混凝土连接件承载力计算模型对于新型开孔钢板型竹-混凝土连接件承载力的预测具有一定的适用性.
Abstract:
To investigate the mechanical behaviors of the perforated plate shear connections of bamboo-concrete, three perforated plate connectors were tested under static push-out loading, and the measuring method based on the linear variable displacement transducer(LVDT)and the digital image correlation(DIC)method were used to measure the interface slip. The results show that there is no obvious damage between the perforated plate and the bamboo when the failure of the connectors occurs. The concrete dowels in the holes of the perforated plate and the concrete supporting surface are damaged. No drastic reactions are observed during the failure process and the failure modes are ductile. The standard deviation of the ultimate bearing capacity is small and the bearing capacity of the connectors is stable. The distributions of the slips along the height of both sides are the same, showing that the shear transmits evenly for the perforated plate shear connections, and the load-slip curves exhibit its excellent slip deformation ability. The shear bearing capacity of the perforated plate connectors is mainly provided by the concrete dowels in the hole of the perforated plate and the concrete bearing under the low edge of the steel plate. The specific model for the bearing capacity of the steel concrete connectors has a certain applicability for the prediction of the new perforated plate shear connections of bamboo-concrete.

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备注/Memo

备注/Memo:
收稿日期: 2017-03-18.
作者简介: 魏洋(1978—),男,博士,教授,博士生导师,wy78@njfu.edu.cn.
基金项目: 国家自然科学基金资助项目(51208262,51778300)、江苏省自然科学基金资助项目(BK20151520)、江苏省“333”工程资助项目(BRA2016421)、江苏省“青蓝工程”资助项目、江苏高校优势学科建设工程资助项目(PAPD).
引用本文: 魏洋,李宁,吴刚,等.开孔钢板型竹混凝土连接件荷载滑移性能[J].东南大学学报(自然科学版),2017,47(6):1167-1173. DOI:10.3969/j.issn.1001-0505.2017.06.014.
更新日期/Last Update: 2017-11-20