Abstract
Past studies have demonstrated that the vertical earthquake component can substantially affect the seismic performance of bridges and buildings. This component is typically ignored or, when included in the design, is estimated as two-thirds of the horizontal seismic design earthquake. This paper presents the characterization of the acceleration amplitude of the vertical component of moderate and strong earthquakes in Colombia (Moment magnitude Mw > 4) that occurred between June 1993 and April 2020. A total of 42 seismic records registered at less than 50 km from the rupture plane and with horizontal acceleration peaks greater than 0.05g were selected. The peak ground acceleration (PGA) of the three components and the ratio between those PGAs were calculated. Additionally, the relationship among those parameters and the magnitude and epicentral and hypocentral distances were determined. The results showed that the V/H ratio equal to 2/3 is not always valid to represent the effects of the vertical component in structures subjected to the moderate and strong ground motions in Colombia.
Funder
Vicerrectoría de Investigación y Extensión, Universidad Industrial de Santander
Publisher
Universidad Militar Nueva Granada
Reference27 articles.
1. J.-S. Jeon, A. Shafieezadeh, D. H. Lee, E. Choi, & R. DesRoches, “Damage assessment of older highway bridges subjected to three-dimensional ground motions: Characterization of shear-axial force interaction on seismic fragilities,” Engineering Structures, vol. 87, pp. 47–57, march, 2015. doi: https://doi.org/10.1016/j.engstruct.2015.01.015
2. F. Colangelo, “Effect of earthquake statistically correlated vertical component on inelastic demand to regular reinforced-concrete frames,” Engineering Structures, vol. 211, p. 110492, May 2020. doi: https://doi.org/10.1016/j.engstruct.2020.110492
3. A. Papazoglou & A. Elnashai, “Analytical and Field Evidence of the Damaging Effect of Vertical Earthquake Ground Motion,” Earthquake Engineering & Structural Dynamics, vol. 25, no. 10, pp. 1109–1137, October 1996. doi: https://doi.org/10.1002/(SICI)1096-9845(199610)25:10%3C1109::AID-EQE604%3E3.0.CO;2-0
4. J. Benjumea, M. Saiidi, & A. Itani, “Experimental and Analytical Seismic Studies of a Two-Span Bridge System with Precast Concrete Elements and ABC Connections,” Center for Civil Engineering Earthquake Research, University of Nevada, Reno. Report No.: CCEER-19-02, Reno, United States, 2019.
5. A. Massumi & F. Gholami, “The influence of seismic intensity parameters on structural damage of RC buildings using principal components analysis,” Applied Mathematical Modelling, vol. 40, no. 3, pp. 2161–2176, February 2016. doi: https://doi.org/10.1016/j.apm.2015.09.043