Experimental Study of the Seismic Performance of Composite Frames Encased with Mild Steel under Cyclic Loading
| International Journal of Civil Engineering |
| © 2024 by SSRG - IJCE Journal |
| Volume 11 Issue 11 |
| Year of Publication : 2024 |
| Authors : J. Sheeba Ebenezer, D. Tensing, D Vijayalakshmi, S. Vincent Sam Jebadurai |
10.14445/23488352/IJCE-V11I11P104
How to Cite?
J. Sheeba Ebenezer, D. Tensing, D Vijayalakshmi, S. Vincent Sam Jebadurai, "Experimental Study of the Seismic Performance of Composite Frames Encased with Mild Steel under Cyclic Loading," SSRG International Journal of Civil Engineering, vol. 11, no. 11, pp. 36-44, 2024. Crossref, https://doi.org/10.14445/23488352/IJCE-V11I11P104
Abstract:
Concrete-filled steel tubes (CFT) have gained prominence in construction due to their exceptional earthquake resistance. The synergy between concrete and steel offers several advantages, including delaying local bulking of steel offers several advantages, including delaying local bulking of the steel tubes through concrete restraint and enhancing concrete strength via the confining effect of the steel. This research investigates portal frames encased in mild steel, which is crucial for shear connections that improve load-bearing capacity and ductility. The experimental assessment of the CFT frame’s load-bearing capacity was conducted through horizontal cyclic load testing, where a force was applied along the axis of the portal structure. Mild steel plates, 1.2mm thick and presented in various widths, were used alongside M2% grade concrete. Specimens were equipped with shear connections to function cohesively and tested with the spacing of 125 mm, 100mm, and 75mm, applying a load increment of 0.1 tons per cycle. Notably, the strength and toughness of the shear connector unit were enhanced without requiring additional steel. The hysteresis curve illustrated the relationship between axial elongations and loads. CFT structures exhibited higher ductility, rigidity, and ultimate load capacity compared to regular concrete. The cyclic loading protocol involved ten cycles at a frequency of 0.5 Hz, simulating real-world seismic conditions. These findings suggest incorporating CFT elements in seismic-prone areas can optimize frame design. Specifically, shear connectors spaced 100 mm apart significantly enhanced load-bearing capacity without additional steel reinforcement. This research highlights the benefits of CFT in construction and provides guidelines for improving structural resilience against seismic activities, contributing to safer building practices in earthquake-prone regions. The analytical equation between spacing and load applied and deflection (obtained is proposed for the present model. For example, MSCFPF is used in curve fitting, which allows for the creation of equations that represent the relationship between load, deformation, and other key variable spacing.
Keywords:
Concrete–Filled steel Tube (CFT), Load bearing, Hysteresis curve, yield strength, Cyclic loading frame, SP specimens (SP-75, SP-100, SP-125).
References:
[1] HuaDong Li et al., “A Study on Improving Energy Flexibility in Building Engineering through Generalized Prediction Models: Enhancing Local Bearing Capacity of Concrete for Engineering Structures,” Engineering Structures, vol. 303, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[2] Yansheng Du et al., “Axial Compressive Behavior of CFRP Confined Rectangular CFT Columns Using High-Strength Materials: Numerical Analysis and Carrying Capacity Model,” Structures, vol. 36, pp. 997-1020, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[3] Mohammed Amer et al., “Experimental and Numerical Investigations on Cyclic Performance of L-Shaped-CFT Column Frame-Buckling Restrained and Unrestrained Steel Plate Shear Walls with Partial Double-Side/Four Corner Connections,” Journal of Building Engineering, vol. 78, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[4] Jianwei Zhang et al., “Cyclic Behavior of High-Strength Concrete Shear Walls with High-Strength Reinforcements and Boundary CFST Columns,” Journal of Constructional Steel Research, vol. 182, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[5] Saad Younas et al., “Behaviour of High Strength Concrete-Filled Short Steel Tubes under Sustained Loading,” Steel and Composite Structures, vol. 39, no. 2, pp. 159-170, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[6] Xi-Feng Yan, Yan-Gang Zhao, and Siqi Lin, “Compressive Behaviour of Circular CFDST Short Columns with High- and Ultrahigh-Strength Concrete,” Thin-Walled Structures, vol. 164, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[7] Jaykrishna Choudhary, and Deepti Hazari, “Comparative Study on Seismic Analysis of Multistory Building with CSFT Columns and RCC Columns,” Journal of University of Shanghai for Science and Technology, vol. 26, no. 1, pp. 11-22, 2024.
[Google Scholar] [Publisher Link]
[8] Takanori Ishida et al., “Experimental Study on Full-Scale Steel Moment-Resisting Frames with Nonstructural Walls Subjected to Multiple Earthquakes,” Engineering Structures, vol. 242, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[9] Wenchen Shan et al., “Collapse Risk-Targeted Seismic Design of Concrete-Filled Steel Tube Frame-RC Core Tube Structures,” Structures, vol. 55, pp. 1470-1480, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[10] Yong Yang et al., “Experimental Study on the Seismic Performance of Composite Columns with an Ultra-High-Strength Concrete-Filled Steel Tube Core,” Advances in Structural Engineering, vol. 23, no. 4, pp. 794-809, 2019.
[CrossRef] [Google Scholar] [Publisher Link]
[11] Jinjie Men et al., “An Experimental Study on the Seismic Behavior and Replaceability of the Replaceable Steel Shear Links,” Structures, vol. 33, pp. 2334-2348, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[12] Wei Zhou et al., “Experimental Study of Seismic Performance of PEC Column-Steel Beam 3D Frame with Endplate Connection,” Journal of Constructional Steel Research, vol. 202, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[13] Zhanzhong Yin, Zhaosheng Huang, and Hui Zhang, “Experimental Study on Steel Plate Shear Walls with Partially Encased Composite Columns Composed of Thin Steel Plate,” KSCE Journal of Civil Engineering, vol. 27, pp. 1118-1135, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[14] Xin Wang et al., “Experimental Study on Seismic Behavior of Prefabricated RC Frame Joints with T-Shaped Columns,” Engineering Structures, vol. 233, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[15] Bin Jia et al., “Experimental Study of the Seismic Behavior of a Prefabricated Low-Rise Steel Frame Structure with Hinged Joints,” Buildings, vol. 12, no. 12, pp. 1-16, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[16] Longsheng Bao et al., “Experimental Study on the Seismic Performance of Prefabricated Frame Piers,” Structures, vol. 52, pp. 651-665, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[17] Pengtuan Zhao et al., “Experimental Research on Seismic Performance of Steel Fiber-Reinforced Recycled Concrete-Filled Circular Steel Tube Columns,” Journal of Building Engineering, vol. 54, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[18] Chang Su et al., “Experimental Study on the Seismic Behavior of Seawater Sea sand Concrete Beams Reinforced with Steel-FRP Composite Bars,” Engineering Structures, vol. 248, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[19] Ibrahim M. H. Alshaikh et al., “An Experimental Study on Enhancing Progressive Collapse Resistance Using a Steel Fiber–Reinforced Concrete Frame,” Journal of Structural Engineering, vol. 148, no. 7, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[20] Wei Li, Li-Feng Xu, and Wei-Wu Qian, “Seismic Performance of Concrete-Encased CFST Column to Steel Beam Joints with Different Connection Details,” Engineering Structures, vol. 204, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[21] M. Vishal, and K.S. Satyanarayanan, “Experimental Investigation on the Heat Dissipation and Postfire Structural Performance of a Reinforced Concrete Column with Biomimicked Geometry,” Fire, vol. 5, no. 6, pp. 1-35, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[22] Wei Xian et al., “Dynamic Response of Steel-Reinforced Concrete-Filled Circular Steel Tubular Members under Lateral Impact Loads,” Thin-Walled Structures, vol. 151, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[23] Tuan Trung Le et al., “Numerical Modeling of Rectangular Concrete-Filled Double-Skin Steel Tubular Columns with Outer Stainless-Steel Skin,” Journal of Constructional Steel Research, vol. 179, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[24] Khalid Abdel Naser Abdel Rahim, “Literature Review: Concrete Filled Steel Tubes Under Transverse Impact Loading,” Current Trends in Civil & Structural Engineering, vol. 7, no. 3, pp. 1-88, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[25] Baifu Luo et al., “Axial Compressive Bearing Capacity of High-Strength Concrete-Filled Q690 Square Steel Tubular Stub Column,” Construction and Building Materials, vol. 413, 2024.
[CrossRef] [Google Scholar] [Publisher Link]