Load transfer mechanism of an unwelded, unbolted, grouted connection for prefabricated square tubular columns under axial loads
Load transfer mechanism of an unwelded, unbolted, grouted connection for prefabricated square tubular columns under axial loads
复制标题
轴向载荷下预制方管柱非焊接、非螺栓、灌浆连接的载荷传递机制
DOI：
10.1016/j.engstruct.2020.111088
复制
发表时间：
2020-11
影响因子：
5.5
通讯作者：
Jianqiao Ye
中科院分区：
文献类型：
--
作者：
Lili Sui;Shiyong Fan;Zhenyu Huang;Wei Zhang;Yingwu Zhou;Jianqiao Ye
本研究为预制方管组合柱开发了一种新型的非焊接、非螺栓连接、超高性能纤维增强混凝土（UHPFRC）灌浆连接。本文对8根UHPFRC灌浆连接柱进行了极限抗拉抗压试验。试验结果表明，新型连接具有良好的抗拉、抗压性能和结构刚度。主要破坏形式为端板冲剪、内管焊接断裂、管屈服和钢管局部屈曲。采用ABAQUS软件对试件进行有限元模拟。试验结果与模拟结果吻合较好，表明有限元模拟能够捕捉到观察到的破坏模式和极限抗拉抗压能力。然后，对现有的分析设计公式进行了评估，以评估其对预制管抗压和抗拉性能预测的适用性。计算结果与试验结果吻合较好。这些分析公式有可能用于设计预制钢、钢筋混凝土和钢-混凝土组合柱的新型无焊接、无螺栓连接、UHPFRC灌浆连接。
This study develops a novel unwelded, unbolted, ultrahigh-performance fibre-reinforced concrete (UHPFRC) grouted connection for prefabricated square tubular composite columns. Herein, eight full-scale columns with UHPFRC grouted connections are tested to investigate their ultimate tensile and compressive resistance. The test results show that the novel connections exhibit good tensile and compressive resistance and structural stiffness. The primary failure modes are punching shear of the end plate, welding fracture at the inner tube, tube yielding and local buckling of the steel tube. The test specimens are simulated using finite element (FE) analysis in ABAQUS. The experimental and simulated results are in good agreement, indicating that the FE simulations can capture the observed failure modes and ultimate tensile and compressive resistance. Thereafter, existing analytical design formulas are evaluated to assess their suitability to predict the compressive and tensile resistance of prefabricated tubes with/without the novel grouted connections. A good agreement between the formula predictions and the test results are observed. These analytical formulas have the potential to be used in the design of the novel unwelded, unbolted, UHPFRC grouted connections for prefabricated steel, reinforced concrete and steel–concrete composite columns.
登录
查看更多内容
影响因子：
11.7
作者：
Sandanayake, Malindu;Luo, Wenkai;Zhang, Guomin
通讯作者：
Zhang, Guomin
影响因子：
3.9
作者：
I. Lotsberg
通讯作者：
I. Lotsberg
DOI：
--
发表时间：
2018
期刊：
--
影响因子：
--
作者：
Nikolaos I. Tziavos;H. Hemida;N. Metje;C. Baniotopoulos
通讯作者：
Nikolaos I. Tziavos;H. Hemida;N. Metje;C. Baniotopoulos
影响因子：
6.3
作者：
Kang, Su-Tae;Lee, Yun;Kim, Jin-Keun
通讯作者：
Kim, Jin-Keun
影响因子：
4.1
作者：
M. Gerami;H. Saberi;V. Saberi;A. S. Daryan
通讯作者：
M. Gerami;H. Saberi;V. Saberi;A. S. Daryan