Title of article :
Lateral Load Carrying Capacity of Concrete-filled Cold-formed Steel Shear Wall
Author/Authors :
Sijwal, 'G Department of Civil Engineering - Faculty of Engineering - Kasetsart University - Bangkok, Thailand , Man Pradhan, P School of Engineering - Manmohan Technical University - Morang, Nepal , Phuvoravan, K
Abstract :
A new type of innovative composite shear wall (concrete-filled cold-formed steel shear wall or CFCSW) is proposed, composed of cold-formed channel sections arc-welded together by 20 mm length of welds and filled with concrete. The main study of the CFCSW focuses on the overall behavior, ultimate load capacity, stiffness and ductility. Three specimens of CFCSW with an aspect ratio of 1.0 are tested under lateral monotonic load. Three-dimensional finite element models are developed and benchmarked with the experimental results. The validated models are used to carry out parametric studies to determine the influence of the parameters on the performance of the CFCSW. The parameters are the height, steel plate thickness, weld spacing and concrete thickness of the CFCSW. The experimental and finite element modeling results indicate that increasing the weld spacing from 105 mm to 211 mm improves the stiffness, ductility and load carrying capacity, and similarly, providing holes inside the wall increases the stiffness, ductility and peak strength of the CFCSW. The ultimate capacity of the CFCSW is most influenced by changing the height of the wall and least influenced by varying the concrete thickness of the wall.
Farsi abstract :
ﻧﻮع ﺟﺪﯾﺪي از دﯾﻮارﻫﺎي ﺑﺮﺷﯽ ﮐﺎﻣﭙﻮزﯾﺘﯽ ﻧﻮآوراﻧﻪ ، دﯾﻮار ﺑﺮﺷﯽ ﻓﻮﻻدي ﺷﮑﻞ ﺳﺮد ﭘﺮ ﺷﺪه ﺑﺎ ﺑﺘﻦ CFCSW)(ﭘﯿﺸﻨﻬﺎد ﺷﺪه اﺳﺖ ، ﮐﻪ از ﺑﺨﺸﻬﺎي ﮐﺎﻧﺎل ﺳﺮد ﺗﺸﮑﯿﻞ ﺷﺪه و ﺑﻪ ﻃﻮل 20 ﻣﯿﻠﯽ ﻣﺘﺮ ﺟﻮش داده ﺷﺪه و ﺑﺎ ﺑﺘﻦ ﭘﺮ ﺷﺪه اﺳﺖ. ﻣﻄﺎﻟﻌﻪ اﺻﻠﯽ CFCSW ﺑﺮ رﻓﺘﺎر ﮐﻠﯽ ، ﻇﺮﻓﯿﺖ ﺑﺎر ﻧﻬﺎﯾﯽ ، ﺳﻔﺘﯽ و ﺷﮑﻞ ﭘﺬﯾﺮي ﺗﻤﺮﮐﺰ دارد. ﺳﻪ ﻧﻤﻮﻧﻪ از CFCSW ﺑﺎ ﻧﺴﺒﺖ ﺗﺼﻮﯾﺮ 1.0 ﺗﺤﺖ ﺑﺎر ﯾﮑﻨﻮاﺧﺖ ﺟﺎﻧﺒﯽ آزﻣﺎﯾﺶ ﻣﯽ ﺷﻮﻧﺪ. ﻣﺪﻟﻬﺎي اﺟﺰاي ﻣﺤﺪود ﺳﻪ ﺑﻌﺪي ﺑﺎ ﻧﺘﺎﯾﺞ ﺗﺠﺮﺑﯽ ﺗﻮﺳﻌﻪ داده ﺷﺪه و ﻣﻌﯿﺎر ﻗﺮار ﻣﯽ ﮔﯿﺮﻧﺪ. ﻣﺪﻟﻬﺎي ﻣﻌﺘﺒﺮ ﺑﺮاي اﻧﺠﺎم ﻣﻄﺎﻟﻌﺎت ﭘﺎراﻣﺘﺮﯾﮏ ﺑﺮاي ﺗﻌﯿﯿﻦ ﺗﺄﺛﯿﺮ ﭘﺎراﻣﺘﺮﻫﺎ ﺑﺮ ﻋﻤﻠﮑﺮد CFCSW اﺳﺘﻔﺎده ﻣﯽ ﺷﻮﻧﺪ. ﭘﺎراﻣﺘﺮﻫﺎ ﻋﺒﺎرﺗﻨﺪ از ارﺗﻔﺎع ، ﺿﺨﺎﻣﺖ ورق ﻓﻮﻻدي ، ﻓﺎﺻﻠﻪ ﺟﻮش و ﺿﺨﺎﻣﺖ ﺑﺘﻦ CFCSW.ﻧﺘﺎﯾﺞ ﻣﺪل ﺳﺎزي ﻋﻨﺎﺻﺮ ﺗﺠﺮﺑﯽ و ﻣﺤﺪود ﻧﺸﺎن ﻣﯽ دﻫﺪ ﮐﻪ اﻓﺰاﯾﺶ ﻓﺎﺻﻠﻪ ﺟﻮش از 105 ﻣﯿﻠﯽ ﻣﺘﺮ ﺑﻪ 211 ﻣﯿﻠﯽ ﻣﺘﺮ ، ﺳﺨﺖ ، ﺷﮑﻞ ﭘﺬﯾﺮي و ﻇﺮﻓﯿﺖ ﺣﻤﻞ ﺑﺎر را ﺑﻬﺒﻮد ﻣﯽ ﺑﺨﺸﺪ و ﺑﻪ ﻃﻮر ﻣﺸﺎﺑﻪ ، اﯾﺠﺎد ﺳﻮراخ در داﺧﻞ دﯾﻮار ﺑﺎﻋﺚ اﻓﺰاﯾﺶ ﺳﺨﺘﯽ ، ﺷﮑﻞ ﭘﺬﯾﺮي و اﺳﺘﺤﮑﺎم CFCSW ﻣﯽ ﺷﻮد. ﻇﺮﻓﯿﺖ ﻧﻬﺎﯾﯽ CFCSW ﺑﯿﺸﺘﺮﯾﻦ ﺗﺄﺛﯿﺮ را ﺑﺮ ﺗﻐﯿﯿﺮ ارﺗﻔﺎع دﯾﻮار ﻣﯽ ﮔﺬارد و ﮐﻤﺘﺮﯾﻦ آن را ﻣﺘﻐﯿﺮ ﺑﻮدن ﺿﺨﺎﻣﺖ ﺑﺘﻦ دﯾﻮار ﻣﯽ ﮐﻨﺪ.
Keywords :
Parametric Studies , Concrete-filled cold-formed steel shear wall (CFCSW) , monotonic load , Experimental Investigation , non-linear finite element analysis
Journal title :
International Journal of Engineering
