Abstract
As there is a lack of earthquake damage data for factory buildings with seismic fortifications in China, seismic vulnerability analysis was performed by numerical simulation in this paper. The earthquake-structure analysis model was developed with considering the influence of uncertainties of the ground motion and structural model parameters. The small-size sampling was conducted based on the Latin hypercube sampling and orthogonal design methods. Using nonlinear analysis, the seismic vulnerability curves and damage probability matrix with various seismic fortification intensities (SFI) were obtained. The seismic capacity of the factory building was then evaluated. The results showed that, with different designs at different SFIs, the factory building could consistently achieve the three seismic fortification objectives. For the studied factory buildings with the SFI of 6, they satisfied the seismic fortification requirements of “no damage in moderate earthquakes, mendable in strong earthquakes”; for those buildings with SFIs of 7 and 8, the requirement of “no collapsing in super strong earthquakes” was generally met; while for those with SFIs of 9, the requirement of “mendable in moderate earthquakes” was almost satisfied. The results showed factory buildings designed with low SFIs are better at achieving the seismic fortification objectives than those designed with high SFIs.
Highlights
With the rapid development of industrialization in China, there are a growing number of industrial enterprises that support the development of the national economy
Most of those enterprises are located in an earthquake zone that is above the seismic fortification intensity (SFI) of 7
As for the reinforced concrete (RC) column factory buildings with seismic fortification, there is a lack of necessary seismic data, and that limits the use of statistical analysis due to the small number of samples
Summary
With the rapid development of industrialization in China, there are a growing number of industrial enterprises that support the development of the national economy Most of those enterprises are located in an earthquake zone that is above the seismic fortification intensity (SFI) of 7. The seismic vulnerability analysis of building structures provides a method for earthquake disaster loss assessment, and it is the basis for seismic damage prediction. The vulnerability analysis method for industrial factory buildings is mainly based on the earthquake disaster data statistics and numerical analysis. As for the RC column factory buildings with seismic fortification, there is a lack of necessary seismic data, and that limits the use of statistical analysis due to the small number of samples. By using a numerical simulation method, the seismic vulnerability curves of single-story RC factory buildings with seismic fortification are determined. This study improves the understanding of the seismic vulnerability and seismic performance of single-story RC industrial buildings
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