کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4919946 | 1429080 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rigidity estimation of embedded CFST column-to-beam connections
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Rigidity estimation of embedded CFST column-to-beam connections Rigidity estimation of embedded CFST column-to-beam connections](/preview/png/4919946.png)
چکیده انگلیسی
This paper presents a finite element analysis (FEA) of embedded concrete-filled steel tube (CFST) column-to-beam connections subjected to combined axial-flexural loading. The proposed FEA model was verified by experimental results from previous research. The comparison and analysis show that the predicted local damages, failure patterns, and load versus displacement curves were generally in good agreement with the experimental observations. Several identified parameters were studied, including various concrete strengths, steel tube yield stresses, embedded lengths, and axial loading ratios. Based on the parametric study, provisions and methods to estimate the effective flexural stiffness of the composite columns were suggested, and simple equations to estimate the effective stiffness of the whole connection were proposed. In addition, the fracture strain captured in the cyclic loading test was greater than that captured in the uniaxial tensile test. The inelastic responses of the CFST connections can be recorded using the FEA models, and the longitudinal strain can be used to define when tube tearing will occur, while the plastic equivalent strain can be used to define where tube tearing will occur.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 147, 15 September 2017, Pages 768-781
Journal: Engineering Structures - Volume 147, 15 September 2017, Pages 768-781
نویسندگان
Haiqing Zhu, Ying Li, Xiedong Zhang,