| 圆中空夹层钢管混凝土柱力学性能研究 |
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| 引用本文： | 张纪刚, 陈飞, 高嵩. 海洋平台组合结构-钢连接节点轴压性能试验研究及有限元分析[J]. 北京工业大学学报, 2019, 45(3): 253-263. DOI: 10.11936/bjutxb2018070042 |
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| 作者姓名： | 张纪刚 陈飞 高嵩 |
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| 作者单位： | 1.青岛理工大学土木工程学院, 青岛 266033;2.青岛理工大学山东省蓝色经济区工程建设与安全协同创新中心, 青岛 266033 |
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| 摘 要： | 为了解决不锈钢管中管钢管混凝土组合海洋平台上、下组块结构间连接可靠性的问题，在JZ20-2北高点井口平台的基础上，提出了过渡件连接、隔板加劲肋连接和法兰连接3种节点型式.为考察和比较这3种连接节点的轴压力学性能，设计制作了3个1:4的缩尺模型试件并进行了静力试验.同时，利用有限元ABAQUS对节点进行了非线性分析.有限元和试验的结果表明：过渡件节点、隔板加劲肋节点和法兰节点均能满足海洋平台承载力的设计要求，其中，法兰节点承载力最高，隔板加劲肋节点延性最好.除法兰节点外，过渡件节点和隔板加劲肋节点破坏严重.试件破坏形态主要表现为过渡件、钢管、隔板和加劲肋的屈曲，而不锈钢管中管钢管混凝土外观完好，承载力仍有盈余.
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| 关 键 词： | 不锈钢管中管钢管混凝土 过渡件 隔板加劲肋 法兰 轴压性能 |
| 收稿时间： | 2018-07-31 |
Mechanical behaviour of concrete-filled double skin steel tubular columns with circular cular sections |
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| ZHANG Jigang, CHEN Fei, GAO Song. Experimental Research and Finite Element Analysis of Axial Compression Behavior of Joints on Offshore Platform Between Composite Structure and Steel Tube[J]. Journal of Beijing University of Technology, 2019, 45(3): 253-263. DOI: 10.11936/bjutxb2018070042 |
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| Authors: | ZHANG Jigang CHEN Fei GAO Song |
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| Affiliation: | 1.College of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China;2.Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao 266033, China |
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| Abstract: | To solve the reliability problem of joint connection between upper desk and lower blocks on stainless steel-concrete-steel tube offshore platform, three types of joints were put forward based on JZ20-2 offshore platform including transitional connector joint, stiffened bearing plate joint, and flange joint. Three 1/4 scale model joint specimens were designed and the static tests were performed to study their axial compression mechanical properties. Nonlinear FEA of the specimens was performed by ABAQUS as well. Both experimental and finite element analysis results show that three types of joints can well satisfy the capacity design requirements of the offshore platform. Among them, the flange joint has the highest bearing capacity and the stiffened bearing plate joint has the best ductility. In addition to the flange joint, other joint specimens are seriously damaged. The failure modes of the specimens are mainly reflected in the buckling damage of transitional connector, steel tube, bearing plate and stiffeners. The appearance of stainless steel-concrete-steel tube is almost complete through the whole tests, which indicates that there is still a surplus of bearing capacity. |
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| Keywords: | stainless steel-concrete-steel tube transitional connector stiffened bearing plate flange axial compression behavior |
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