Computational Research on Seismic Intensity Based on Ground Motion Parameters

Abstract:

After an earthquake event, the spatial distribution of seismic intensity of the event and extremely destructed area could be quickly evaluated by means of the empirical relationship between ground-motion parameters and seismic intensity, which has been proposed for years. This can provide a basis for the government to carry out emergency relief and reasonable distribution of relief supplies. In this paper, the computational methods of instrumental seismic intensity used at home and abroad are briefly introduced. By analyzing the advantages of the methods in the USA and Japan, a relatively simple computational method of seismic intensity is proposed. Firstly, the acceleration time history (A_all) and velocity time history (V_all) of the complete vibration are synthetized by the filtered three-direction acceleration and velocity time histories, and substituted in the empirical formulation. Then, the seismic intensity can be computed by the sorting method. After that, this method is compared with the intensity scale evaluation method and fuzzy algorithm by using the strong motion parameters of Wenchuan earthquake. The results show that the method proposed in this paper is better than the two methods and has certain practical values.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 1595-1599
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.1595
• Online since: November 2013
• Authors: Wei Li, Shan You Li, Liang Li, Jing Long Han
• Keywords: Ground-Motion Parameters, Instrumental Seismic Intensity

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