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Nonlinear analysis of eccentrically braced steel frame with infill walls in the Sarpol-e Zahab earthquake‬

  • December 2019
  • Conference: 10th National Conference on Steel & Structure
  • At: Iran, Tehran
Authors:
Mohammad Reza Tabeshpour at Sharif University of Technology
Mohammad Reza Tabeshpour
Azadeh Noorifard at University of Tehran
Azadeh Noorifard
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ﺪﻨﺑرﺎﻬﻣ ﺎﺑ يدﻻﻮﻓ هزﺎﺳ ﻲﻄﺧﺮﻴﻏ ﻞﻴﻠﺤﺗ بﺎﻫذ ﻞﭘﺮﺳ ﻪﻟﺰﻟز رد هﺪﻨﻨﻛﺮﭘ راﻮﻳد ياراد رﻮﺤﻣ نوﺮﺑ
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ﺶﺑﺎﺗ ﺎﺿرﺪﻤﺤﻣرﻮﭘ
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، دﺮﻓ يرﻮﻧ هدازآ
2
هﺪﻴﻜﭼ
بﺎﻗﻞﻜﺷ و ﻲﺘﺨﺳ ظﺎﺤﻟ زا رﻮﺤﻣ نوﺮﺑ هﺪﺷ يﺪﻨﺑرﺎﻬﻣ يﺎﻫ يﺮﻳﺬﭘﻦﻴﺑﺎﻨﻴﺑ يرﺎﺘﻓر ﻢﻫ ﺪﻨﺑرﺎﻬﻣ و ﻲﺸﻤﺧ بﺎﻗ
مزﻻ رﻮﻈﻨﻣ ﻦﻳا ﻪﺑ .ﺪﻧراد رﻮﺤﻣ ﻲﻄﺧﺮﻴﻏ ﻪﻠﺣﺮﻣ رد ﻪﻛ دﺮﻴﮔ مﺎﺠﻧا يﻮﺤﻧ ﻪﺑ ﺪﻧﻮﻴﭘ ﺮﻴﺗ و ﺪﻨﺑرﺎﻬﻣ ﻲﺣاﺮﻃ ﺖﺳا
بﺎﻗ ﻪﻜﻨﻳا ﻢﻏر ﻲﻠﻋ ﺪﻳدﺮﮔ هﺪﻫﺎﺸﻣ بﺎﻫذ ﻞﭘﺮﺳ ﻪﻟﺰﻟز رد .دﻮﺷ يرﺎﺟ ﺪﻧﻮﻴﭘ ﺮﻴﺗ ﺎﻬﻨﺗﺎﻬﻣ ياراد يﺎﻫ نوﺮﺑ ﺪﻨﺑر
ﭘ هزﺎﺳ هﺪﻨﻨﻛﺮﭘ يﺎﻫراﻮﻳد ﺖﺒﺜﻣ رﺎﺛآ ﻞﻴﻟد ﻪﺑ ﻲﻟو ﺪﻧراد يدﺎﻳز ﻲﻳاﺮﺟا تﻻﺎﻜﺷا و هﺪﺸﻧ ﻲﺣاﺮﻃ رﻮﺤﻣراﺪﻳﺎ ي
هدﺮﻛ ﻆﻔﺣ ار دﻮﺧنﺎﻤﺘﺧﺎﺳ زا ﻲﻜﻳ يزﺎﺴﻟﺪﻣ زا هدﺎﻔﺘﺳا ﺎﺑ ﺶﻫوﮋﭘ ﻦﻳا رد .ﺖﺳا ترﻮﺻ ﻪﺑ هﺪﻳد ﺐﻴﺳآ يﺎﻫ
هﺪﻨﻨﻛﺮﭘ راﻮﻳد نوﺪﺑ و ﺎﺑ ﺖﻟﺎﺣ ود رد هزﺎﺳ رﺎﺘﻓر ﻞﻴﻠﺤﺗ ﻪﺑ بﺎﻫذ ﻞﭘﺮﺳ ﻪﻟﺰﻟز رد ﻪﻧﺎﻫد رﺎﻬﭼ ﻪﻘﺒﻃ ﻪﺳ بﺎﻗ ﻚﻳ
ﻞﺼﺘﻣ هزﺎﺳ ﻪﺑ هﺪﻨﻨﻛﺮﭘ راﻮﻳد ﻪﻛ ﻲﺘﻟﺎﺣ رد .ﺖﺳا هﺪﺷ ﻪﺘﺧادﺮﭘ ﺪﻧﻮﻴﭘ ﺮﻴﺗ و ﺪﻨﺑرﺎﻬﻣ ﻲﺣاﺮﻃ ؛ﺖﻟﺎﺣ ﻪﺳ ،ﺖﺴﻴﻧ
سﺎﺳا ﺮﺑ ﺪﻧﻮﻴﭘ ﺮﻴﺗ و ﺪﻨﺑرﺎﻬﻣ زا ﻚﻴﭽﻴﻫ ﻲﺣاﺮﻃ و ﻪﻣﺎﻧ ﻦﻴﻳآ ﻖﺒﻃ ﺪﻧﻮﻴﭘ ﺮﻴﺗ ﻲﺣاﺮﻃ ﺎﻬﻨﺗ ،ﻪﻣﺎﻧ ﻦﻴﻳآ ﻖﺒﻃ
هزﺎﺳ ﺖﻴﻌﺿو ،ﺖﺳا ﻞﺼﺘﻣ هزﺎﺳ ﻪﺑ هﺪﻨﻨﻛﺮﭘ راﻮﻳد ﻪﻛ ﻲﺘﻟﺎﺣ رد و ﺖﺳا ﻪﺘﻓﺮﮔ راﺮﻗ ﻲﺳرﺮﺑ درﻮﻣ ﻪﻣﺎﻧ ﻦﻴﻳآ
ﻧ ﻦﻴﻳآ ﻂﺑاﻮﺿ نآ رد ﻪﻛ دﻮﺟﻮﻣ درﻮﻣ ﺖﺳا هﺪﻳدﺮﮕﻧ ﺖﻳﺎﻋر ﺪﻧﻮﻴﭘ ﺮﻴﺗ و ﺪﻨﺑرﺎﻬﻣ يﺎﻀﻋا زا ﻚﻴﭽﻴﻫ رد ﻪﻣﺎ
وﺮﻴﻧ رادﻮﻤﻧ سﺎﺳا ﺮﺑ .ﺖﺳا ﻪﺘﻓﺮﮔ راﺮﻗ ﻲﺳرﺮﺑ-ﻲﻣ هزﺎﺳ رﺎﻬﭼ ﺮﻫ نﺎﻜﻣﺮﻴﻴﻐﺗ ﺖﻓﺮﮔ ﻪﺠﻴﺘﻧ ناﻮﺗﺎﺼﺗا ﻪﻛ راﻮﻳد ل
ﻲﺘﺨﺳ ﺪﻳﺪﺷ ﺶﻳاﺰﻓا ﺚﻋﺎﺑ هزﺎﺳ ﻪﺑ، هﺪﺷ يژﺮﻧا بﺬﺟ و ﺖﻣوﺎﻘﻣ و ﻒﻴﻌﺿ ﻪﺑ طﻮﺑﺮﻣ تﻻﺎﻜﺷا يدﺎﻳز ﺪﺣ ﺎﺗ
ﻮﺑ.ﺖﺳا هدﺮﻛ ناﺮﺒﺟ ار ﺪﻨﺑرﺎﻬﻣ و ﺪﻧﻮﻴﭘ ﺮﻴﺗ ند ﻦﻳا رد ﻂﻳاﺮﺷ هزﺮﻟ رﺎﺘﻓر ،ﺖﺷاد ﻲﻤﻧ دﻮﺟو هﺪﻨﻨﻛﺮﭘ راﻮﻳد ﺮﮔا
ﻲﻧاﺮﺤﺑ هزﺎﺳ ياﺰﻳروﺮﻓ لﺎﻤﺘﺣا ﻲﺘﺣ و ﺪﺷ ﻲﻣ ﺮﺗﻲﻣ دﻮﺟو هزﺎﺳ ش.ﺖﺷاد
:يﺪﻴﻠﻛ نﺎﮔژاو
بﺎﻫذ ﻞﭘﺮﺳ ﻪﻟﺰﻟز ،ﻲﻄﺧﺮﻴﻏ ﻞﻴﻠﺤﺗ ،هﺪﻨﻨﻛﺮﭘ راﻮﻳد ،رﻮﺤﻣ نوﺮﺑ ﺪﻨﺑرﺎﻬﻣ ،يدﻻﻮﻓ هزﺎﺳ
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ﻒﻳﺮﺷ ﻲﺘﻌﻨﺻ هﺎﮕﺸﻧاد ،ﻚﻴﻧﺎﻜﻣ هﺪﻜﺸﻧاد ﻲﻤﻠﻋ تﺄﻴﻫ ﻮﻀﻋ
، tabeshpour@yahoo.com
2.
ا
،ﺎﺒﻳز يﺎﻫﺮﻨﻫ ﺲﻳدﺮﭘ ،يرﺎﻤﻌﻣ هﺪﻜﺸﻧاد ﻮﻋﺪﻣ دﺎﺘﺳناﺮﻬﺗ هﺎﮕﺸﻧاد
، azadeh.noorifard@ut.ac.ir
ﻦﻴـﻤﻫد ﻨﻛـﺲﻧاﺮﻔ
ﺳ ﻲﻠﻣـﻓ و هزﺎـدﻻﻮ
ﺶـــﻳﺎﻤﻫ ﺰــﻛﺮــﻣيﺎـﻫ
ﻦﻴﺑﻚﻴﭙــﻤﻟا ﻞﺘﻫ ﻲﻠﻠـﻤﻟا
19-20 هﺎـــــﻣ رذآ1398
Natoinal Conference
th
On Steel & Structure
2019
Iran 10-11 Dec
10
Behavior of Building With Eccentrically Braced Frame and Infill Wall in the Sarpol-E Zahab Earthquake
Article
Full-text available
  • Jan 2020
The Behavior of eccentrically braced frame (EBF) in terms of stiffness and ductility is between moment resisting frame and concentrically braced frame. EBF should be designed in such a way that yielding is only concentrated in the link beam at the non-linear stage. Field survey after the Sarpol-e Zahab earthquake shows that despite several defects in structural design and construction of EBFs, they have remained stable. In this study, one of the damaged buildings in the Sarpol-e Zahab earthquake, in the form of a three-story four-bay frame was modeled in Etabs and its seismic behavior in two cases; with and without infill walls was studied. The results of the analyses show that the presence of diagonal struts of infill walls reduces the axial force of the braces, the shear force, and the bending moment of the link beams. Infill walls also reduce lateral displacement and period of EBF, and they increase the lateral stiffness. Therefore, in the condition that there are several defects in the design and construction of link beams and braces, connecting the infill walls to the structure has a positive achievement. In this condition, if there were not infill walls, there would be a possibility of structural collapse.
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