DOI QR코드

DOI QR Code

Peak floor acceleration prediction using spectral shape: Comparison between acceleration and velocity

  • Torres, Jose I. (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Bojorquez, Eden (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Chavez, Robespierre (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Bojorquez, Juan (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Reyes-Salazar, Alfredo (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Baca, Victor (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Valenzuela, Federico (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Carvajal, Joel (Facultad de Ingenieria, Universidad Autonoma de Sinaloa) ;
  • Payaan, Omar (Department of Mechanical and Mechatronic Engineering, Tecnologico Nacional de Mexico Campus Culiacan) ;
  • Leal, Martin (Facultad de Ingenieria, Universidad Autonoma de Sinaloa)
  • 투고 : 2020.10.28
  • 심사 : 2021.05.21
  • 발행 : 2021.11.25

초록

In this study, the generalized intensity measure (IM) named INpg is analyzed. The recently proposed proxy of the spectral shape named Npg is the base of this intensity measure, which is similar to the traditional Np based on the spectral shape in terms of pseudo-acceleration; however, in this case the new generalized intensity measure can be defined through other types of spectral shapes such as those obtained with velocity, displacement, input energy, inelastic parameters and so on. It is shown that this IM is able to increase the efficiency in the prediction of nonlinear behavior of structures subjected to earthquake ground motions. For this work, the efficiency of two particular cases (based on acceleration and velocity) of the generalized INpg to predict the peak floor acceleration demands on steel frames under 30 earthquake ground motions with respect to the traditional spectral acceleration at first mode of vibration Sa(T1) is compared. Additionally, a 3D reinforced concrete building and an irregular steel frame is used as a basis for comparison. It is concluded that the use of velocity and acceleration spectral shape increase the efficiency to predict peak floor accelerations in comparison with the traditional and most used around the world spectral acceleration at first mode of vibration.

키워드

과제정보

The scholarship for PhD studies given by El Consejo Nacional de Ciencia y Tecnologia for some authors and the support under grant Ciencia Basica 287103 to the second and fourth author is appreciated. Financial support also was received from the Universidad Autonoma de Sinaloa under grant PROFAPI 2022.

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