Comparing Hysteretic Energy and Ductility Uniform Annual Failure Rate Spectra for Traditional and a Spectral Shape-Based Intensity Measure. (15th December 2021)

• Record Type: Journal Article
• Authors: Carvajal, Joel; Bojórquez, Edén; Ruiz, Sonia; Bojórquez, Juan; Reyes-Salazar, Alfredo; Rodríguez, Ali; Niño, Mauro; Ruiz-García, Jorge; López-Almansa, Francisco; Torres, José
• Other Names: Chen Qian Academic Editor.
• Is Part Of: Advances in civil engineering. Volume 2021(2021)
• Publication Date: 2021-12-15
• Subjects: Civil engineering -- Periodicals; Civil engineering; Periodicals; 624
• DOI: 10.1155/2021/2601087
• Languages: English
• ISSNs: 1687-8086

Abstract

Abstract : In this study, with the objective to develop a reliability-based seismic design tool, ductility and dissipated hysteretic energy uniform annual failure rate (UAFR) spectra are obtained and compared using the spectral acceleration at first mode of vibration of the structure Sa(T 1 ) and the well-known spectral shape-based intensity measure I Np . Notice that this is the first time in the literature that UAFR spectra are obtained for the advanced spectral shape intensity measure I Np . For this aim, 110 simulated ground motions recorded from the soft soil of Mexico City were selected due to their large energy amount demanded to the structures; moreover, four elastoplastic hysteretic behavior models are considered for the dynamic analyses with post-yielding stiffness of 0, 3, 5, and 10%. It is observed that the use of elasto-perfectly plastic models provided similar UAFR spectra in comparison with hysteretic models with different post-yielding stiffness. This conclusion is valid for the two selected intensity measures. In addition, the lateral resistance required to achieve similar structural reliability levels is larger when the I Np intensity measure is used, especially for buildings with vibration periods equal or larger than the soil period, in such a way that the traditional use of Sa(T 1 ) could provide structures with less structural reliability levels.