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A platform for research: civil engineering, architecture and urbanism
Development of analytical model of nonlinear stiffness bracing system for structures subjected to dynamic load
https://orcid.org/http://orcid.org/0000-0002-7725-5568
This paper reports the development of a numerical model for a nonlinear stiffness bracing (NCSB) system as a new lateral resisting technique for framed structures subjected to dynamic loading. The NCSB device is composed of two conical springs embedded into the device to limit the story drift through the attachment of cable bracings into the frame. This device can adapt the stiffness characteristic of the framed structures due to the dual action of conical spring and wire rope elements at varied displacement values. The derived mathematical and constitutive models were implemented in finite element program code for 3D analysis of reinforced concrete (RC) framed building. The competence of the NCSB device in RC frames was assessed using 3D pushover and time history analyses for a range of spring geometry configurations. The numerical analyses verified the effectiveness of the NCSB technique in enhancing the ultimate capacity of RC frame structures, in reducing plastic hinge formation in the main structural components, and in decreasing the maximum displacement in three directions. It also deduced drift ratio, critical shear, and moment values, when compared with bare RC framed buildings. It is evident that deployment of NCSB enhanced the seismic performance of RC buildings.
Development of analytical model of nonlinear stiffness bracing system for structures subjected to dynamic load
https://orcid.org/http://orcid.org/0000-0002-7725-5568
This paper reports the development of a numerical model for a nonlinear stiffness bracing (NCSB) system as a new lateral resisting technique for framed structures subjected to dynamic loading. The NCSB device is composed of two conical springs embedded into the device to limit the story drift through the attachment of cable bracings into the frame. This device can adapt the stiffness characteristic of the framed structures due to the dual action of conical spring and wire rope elements at varied displacement values. The derived mathematical and constitutive models were implemented in finite element program code for 3D analysis of reinforced concrete (RC) framed building. The competence of the NCSB device in RC frames was assessed using 3D pushover and time history analyses for a range of spring geometry configurations. The numerical analyses verified the effectiveness of the NCSB technique in enhancing the ultimate capacity of RC frame structures, in reducing plastic hinge formation in the main structural components, and in decreasing the maximum displacement in three directions. It also deduced drift ratio, critical shear, and moment values, when compared with bare RC framed buildings. It is evident that deployment of NCSB enhanced the seismic performance of RC buildings.
Development of analytical model of nonlinear stiffness bracing system for structures subjected to dynamic load
https://orcid.org/http://orcid.org/0000-0002-7725-5568
This paper reports the development of a numerical model for a nonlinear stiffness bracing (NCSB) system as a new lateral resisting technique for framed structures subjected to dynamic loading. The NCSB device is composed of two conical springs embedded into the device to limit the story drift through the attachment of cable bracings into the frame. This device can adapt the stiffness characteristic of the framed structures due to the dual action of conical spring and wire rope elements at varied displacement values. The derived mathematical and constitutive models were implemented in finite element program code for 3D analysis of reinforced concrete (RC) framed building. The competence of the NCSB device in RC frames was assessed using 3D pushover and time history analyses for a range of spring geometry configurations. The numerical analyses verified the effectiveness of the NCSB technique in enhancing the ultimate capacity of RC frame structures, in reducing plastic hinge formation in the main structural components, and in decreasing the maximum displacement in three directions. It also deduced drift ratio, critical shear, and moment values, when compared with bare RC framed buildings. It is evident that deployment of NCSB enhanced the seismic performance of RC buildings.
Development of analytical model of nonlinear stiffness bracing system for structures subjected to dynamic load
Asian J Civ Eng
Fateh, Amir (author) / Hejazi, Farzad (author)
Asian Journal of Civil Engineering ; 22 ; 789-805
2021-06-01
17 pages
Article (Journal)
Electronic Resource
English