Abstract
The seismic regulations for the seismic performance assessment of buildings use the maximum interstory drift, θmax, as a measure to control damage. This article presents a study of the seismic performance based on the θmax for steel buildings using Mexico's regulations and the RISK-UE and HAZUS guidelines. The capacity spectrum method is used to evaluate the performance of buildings with 3 different heights located in 4 cities in Mexico with different seismicity, as well as for soft and rock soil types. The HAZUS criterion is conservative in its assement of damage, while the RISK-UE criterion is more in line with the expected damage. The service state, Sstate, and the collapse prevention state, CPstate, in Mexico's regulations are suitable for damage control, and are consistent with the damage proposed by the RISK-UE guidelines. In very high seismicity zones, the CPstate for seismic actions equal to or greater than the expected, prevent building collapse; however, significant damage to buildings can still occur. The θmax of the CPstate must be established for different seismic intensities and not only for building types.
Highlights
The constant seismic activity throughout history has revealed a direct relationship between lateral displacements and the level of structural and non-structural damage in buildings (Andrade, 2004)
Very high seismic actions (Oaxaca, Oaxaca) According to the provisions of the MDOC-CFE, we determined that the SMF13-soft soil (SS) building did not meet the criteria for the service and collapse prevention state
We can say that the interstory drift of θmax = 0.004 indicated in the MDOC-CFE and those proposed by the RISK-UE (Milutinovic and Trendafiloski, 2003) and HAZUS criteria are adequate for damage control in the service state, independent of the type of seismic action
Summary
The constant seismic activity throughout history has revealed a direct relationship between lateral displacements and the level of structural and non-structural damage in buildings (Andrade, 2004) Current regulations such as ASCE 716 in the United States (ASCE/SEI 7-16, 2016), the Manual for the Design of Civil Works by the Federal Electricity Commission of Mexico (MDOC-CFE, 2015), the Complementary Technical Standard of Mexico City (NTCDS-RCDF, 2017), Eurocode 8 (CEN, 2004), among others, propose limiting the quotient of the maximum difference between the lateral displacements of consecutive floors produced by seismic forces and the height of the story to achieve damage control; this value is called the "lateral distortion" or "interstory drift,” θmax. In the NLSA, the displacement on the roof of the structure is obtained for each load increase; it is possible to monitor the nodal displacements of each story and obtain the corresponding maximum interstory drift θmax
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