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Reliability Assessment of CFRP-Strengthened Deficient Steel SHS Columns | ||
| AUT Journal of Civil Engineering | ||
| مقاله 3، دوره 3، شماره 1، شهریور 2019، صفحه 23-36 اصل مقاله (2.02 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajce.2018.14939.5506 | ||
| نویسندگان | ||
| M. Shahraki1؛ M.R. sohrabi1؛ Gh. Azizian1؛ K. Narmashiri* 2 | ||
| 1Department of Civil Engineering, University of Sistan and Baluchestan, Zahedan, Iran | ||
| 2Department of Civil Engineering, Zahedan Branch, Islamic Azad University, Zahedan, Iran | ||
| چکیده | ||
| Civil engineers have always been vexed by such numerous problems such as buckling, corrosion, bending, and over-loading in damaged steel structures. The present study is aimed to evaluate the effects of the axial loading, axial displacement, stiffness and deficiency location on the length of the deficient steel SHS columns have been evaluated based on a detailed parametric study. Three specimens were tested to failure under axial compression in the lab and simulated using the Finite Element (FE) numerical approach and a total of 100 samples were analyzed by ABAQUS using the MATLAB software to predict the suitable limit state functions and determine the best R2 value through such soft computing techniques as the Artificial Neural Networks, Adaptive Neuro-Fuzzy Inference System, Response Surface Method, and Gene Expression Programming. Finally, the failure probability and reliability index were obtained by the FORM and Monte Carlo methods on the suggested limit state functions. Results indicated that using CFRP sheets reduced the stress in the damaged location and appropriately prevented or delayed local deformations around the deficient location. So, strengthening steel columns with CFRP can play a significant role in enhancing the rate of the critical load and β, and reducing (Pf ), in deficient columns. | ||
| کلیدواژه‌ها | ||
| Square Hollow Section (SHS) Steel Column؛ Deficient؛ CFRP؛ Reliability Assessment؛ Probability Failure | ||
| مراجع | ||
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[1] M. Bambach, M. Elchalakani, Plastic mechanism analysis of steel SHS strengthened with CFRP under large axial deformation, Thin-walled structures, 45(2) (2007) 159- 170. [2] M. Shahraki, M.R. Sohrabi, G.R. Azizyan, K. Narmashiri, Experimental and numerical investigation of strengthened deficient steel SHS columns under axial compressive loads, Structural Engineering and Mechanics, 67(2) (2018) 207-217.
[3] J. Kusnick, M. Benson, S. Lyons, Finite Element Analysis of Weld Residual Stresses in Austerities Stainless Steel Canisters in Dry Storage System Canisters, Sandal National Lab. (SONLY-NM), Albuquerque, NM (United States), 2013.
[4] Y.-C. Song, R.-P. Wang, J. Li, Local and post-local buckling behavior of welded steel shapes in partially encased composite columns, Thin-Walled Structures, 108 (2016) 93-108.
[5] L. Dieng, D. Amine, Y. Falaise, S. Chataigner, Parametric study of the finite element modeling of shot peening on welded joints, Journal of Constructional Steel Research, 130 (2017) 234-247.
[6] M. Bambach, H. Jama, M. Elchalakani, Axial capacity and design of thin-walled steel SHS strengthened with CFRP, Thin-Walled Structures, 47(10) (2009) 1112-1121.
[7] J. Teng, T. Yu, D. Fernando, Strengthening of steel structures with fiber-reinforced polymer composites, Journal of Constructional Steel Research, 78 (2012) 131-143.
[8] Y. Yang, Z. Chen, Z. Zhao, X. Liu, Axial compression performance of steel box columns with different strengthening schemes, International Journal of Steel Structures, 17(2) (2017) 367-378.
[9] U. Devi, K.M. Amanat, Non-linear finite element investigation on the behavior of CFRP strengthened steel square HSS columns under compression, International Journal of Steel Structures, 15(3) (2015) 671-680.
[10] S. Erfani, M. Naseri, V. Akrami, Effect of in-service strengthening on the axial load carrying capacity of steel box columns, International Journal of Steel Structures, 17(1) (2017) 231-244.
[11] K. Narmashiri, M.Z. Jumaat, N.R. Sulong, Shear strengthening of steel I-beams by using CFRP strips, Scientific Research and Essays, 5(16) (2010) 2155-2168.
[12] J.-w. Park, J.-h. Yoo, Flexural and compression behavior for steel structures strengthened with carbon fiber reinforced polymers (CFRPs) sheet, Steel and Composite Structures, 19(2) (2015) 441-465.
[13] J.-W. Park, H.-J. Yeom, J.-H. Yoo, Axial loading tests and FEM analysis of slender square hollow section (SHS) stub columns strengthened with carbon fiber reinforced polymers, International Journal of Steel Structures, 13(4) (2013) 731-743.
[14] K. Narmashiri, G. Mehramiz, Strengthening of steel hollow pipe sections subjected to transverse loads using CFRP, Structural Engineering and Mechanics, 60(1) (2016) 163-173.
[15] J. Deng, Y. Jia, H. Zheng, Theoretical and experimental study on notched steel beams strengthened with CFRP plate, Composite Structures, 136 (2016) 450-459.
[16] M.R. Ghaemdoust, K. Narmashiri, O. Yousefi, Structural behaviors of deficient steel SHS short columns strengthened using CFRP, Construction and Building Materials, 126 (2016) 1002-1011.
[17] O. Yousefi, K. Narmashiri, M.R. Ghaemdoust, Structural behaviors of notched steel beams strengthened using CFRP strips, Steel and Composite Structures, 25(1) (2017) 35-43.
[18] M. Karimian, K. Narmashiri, M. Shahraki, O. Yousefi, Structural behaviors of deficient steel CHS short columns strengthened using CFRP, Journal of Constructional Steel Research, 138 (2017) 555-564.
[19] Sikawrap-230C, in: Product data sheet, 2006.
[20] Sikadur-330, in: Product data sheet, 2006.
[21] J.-W. Park, J.-H. Yoo, Axial loading tests and load capacity prediction of slender SHS stub columns strengthened with carbon fiber reinforced polymers, Steel and Composite Structures, 15(2) (2013) 131-150.
[22] K. Narmashiri, M.Z. Jumaat, Reinforced steel I-beams: A comparison between 2D and 3D simulation, Simulation Modelling Practice and Theory, 19(1) (2011) 564-585.
[23] M. Bambach, M. Elchalakani, X.-L. Zhao, Composite steel–CFRP SHS tubes under axial impact, Composite Structures, 87(3) (2009) 282-292.
[24] S. Sivasankar, T. Thilakranjith, M. Sundarraja, Axial Behavior of CFRP Jacketed HSS Tubular Members-An Experimental Investigation, International Journal of Earth Sciences and Engineering, 061(413) (2012) 1729-1737.
[25] A. Nowak, K. Collins, Reliability of Structures McGraw-Hill, Inc., Boston, (2000).
[26] A.M. Hasofer, N.C. Lind, Exact and invariant second-moment code format, Journal of the Engineering Mechanics division, 100(1) (1974) 111-121.
[27] H. Makhduomi, B. Keshtegar, M. Shahraki, A Comparative Study of First-Order Reliability Method-Based Steepest Descent Search Directions for Reliability Analysis of Steel Structures, Advances in Civil Engineering, 2017 (2017).
[28] L. Li, Sequential Design of Experiments to Estimate a Probability of Failure, Supélec, 2012.
[29] H. Yang, A. Wang, Dynamic stability analysis of pipeline based on reliability using surrogate model, Journal of Marine Engineering & Technology, 12(2) (2013) 75-84.
[30] H. Naderpour, A. Kheyroddin, G.G. Amiri, Prediction of FRP-confined compressive strength of concrete using artificial neural networks, Composite Structures, 92(12) (2010) 2817-2829.
[31] T. Takagi, M. Sugeno, Fuzzy identification of systems and its applications to modeling and control, in: Readings in Fuzzy Sets for Intelligent Systems, Elsevier, 1993, pp. 387-403.
[32] A. Cevik, Modeling strength enhancement of FRP confined concrete cylinders using soft computing, Expert Systems with Applications, 38(5) (2011) 5662-5673. | ||
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