[1]蒋洪波,邱洪兴,杨原,等.钢-混凝土组合螺栓连接件极限强度及剪力-位移关系[J].东南大学学报(自然科学版),2020,50(1):56-63.[doi:10.3969/j.issn.1001-0505.2020.01.008]
 Jiang Hongbo,Qiu Hongxing,Yang Yuan,et al.Ultimate strength and load-deformation relationship of steel-concrete composite bolted connector[J].Journal of Southeast University (Natural Science Edition),2020,50(1):56-63.[doi:10.3969/j.issn.1001-0505.2020.01.008]
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钢-混凝土组合螺栓连接件极限强度及剪力-位移关系()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
50
期数:
2020年第1期
页码:
56-63
栏目:
土木工程
出版日期:
2020-01-13

文章信息/Info

Title:
Ultimate strength and load-deformation relationship of steel-concrete composite bolted connector
作者:
蒋洪波邱洪兴杨原孙建方强
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 211189
Author(s):
Jiang Hongbo Qiu Hongxing Yang Yuan Sun Jian Fang Qiang
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, China
关键词:
剪力墙 预制装配式 高强度螺栓 极限强度 剪力-位移关系
Keywords:
shear walls precast construction high-strength bolt ultimate strength load-deformation relationship
分类号:
TU398
DOI:
10.3969/j.issn.1001-0505.2020.01.008
摘要:
对11个装配式剪力墙的钢-混凝土组合螺栓(SCCB)连接件进行单调拉伸试验,借鉴传统螺栓连接件的计算方法并考虑盖板翘曲影响,推导出SCCB连接件的极限强度计算方法.将SCCB连接件剪力-位移曲线分为弹性阶段、滑移阶段和滑移后阶段;考虑SCCB连接件栓杆较长、混凝土受芯板约束的特点,对2种已有螺栓连接件剪力-位移关系经验模型进行修正并应用于滑移后阶段.结果表明:试验中存在孔壁挤压和栓杆剪断2种破坏模式,多数试件在破坏过程中伴随盖板翘曲现象;极限强度计算值与试验值吻合较好,试验值与计算值比值的均值和变异系数分别为1.03和0.089;修正Rex模型和修正Liu模型均可较好地反映连接件在单调拉伸荷载作用下发生孔壁挤压破坏时的剪力-位移关系.
Abstract:
11 steel-concrete composite bolted(SCCB)connectors were tested by using monotonic tensile loading. Based on the calculation method of conventional bolted connection, the calculation method for the ultimate strength of SCCB connectors was proposed considering the influence of curling. The load-deformation relationship of the SCCB connector was divided into the elasticity stage, the slippage stage and the post-slippage stage. Considering the long bolt shank and confinement of the inner plate in the SCCB connector, two empirical models were modified to depict the post-slippage stage. The results show that two failure modes, bearing failure and bolt shear failure, are observed, and most of the connectors fail along with curling. The calculated data of the ultimate strength agree with the experimental data. The mean value and the coefficient of variation of the ratio of the experimental results to the calculated results are 1.03 and 0.089, respectively. The modified Rex model and the modified Liu model can describe the load-deformation relationship of the SCCB connector suffered bearing failure under monotonic loading.

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备注/Memo

备注/Memo:
收稿日期: 2019-06-20.
作者简介: 蒋洪波(1990—),男,博士生;孙建(联系人),男,博士,讲师,sunjian@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51708107)、江苏省自然科学基金资助项目(BK20170668)、江苏省研究生科研与实践创新计划资助项目(KYCX18_0109).
引用本文: 蒋洪波,邱洪兴,杨原,等.钢-混凝土组合螺栓连接件极限强度及剪力-位移关系[J].东南大学学报(自然科学版),2020,50(1):56-63. DOI:10.3969/j.issn.1001-0505.2020.01.008.
更新日期/Last Update: 2020-01-20