چكيده به لاتين
The earthquake is one of the natural occurrences that occur without any warning and suddenly and can lead to irreparable financial and human casualties. On average, 10,000 people in the world will lose their lives in the occurrence of this phenomenon. The financial losses caused by earthquakes are also heavy, so UNESCO studies only estimates damages from the earthquakes from 1926 to 1950, about $ 10,000,000,000. The first time after the 1966 earthquake, Parkfield California and the 1971 earthquake, the Sanfrando, was a near fault. In recent years, especially after the destructive earthquakes, such as the 1992 earthquake, the 1994 earthquake, the 1995 earthquake of Japan and the 1999 earthquake, Chi Taiwan, was found that the nature of seismic loads and the destructive effects of earthquake-induced construction at nearby intervals The title of the nearby area, the distances of less than 20 kilometers of critical fault with distances, have differences. Among these differences, it can be attributed to accelerated components with high frequency content and high-speed pulsed pulses and maximum speed ratio to maximum acceleration. In our country, after the terrible BAM earthquake, the attention of the architect engineers, especially the specific characteristics of these earthquakes, was focused. The most important feature of recorded mapping in near-earthquake areas is close to the progressive directional fault and the lasting impact displacement FLING STEP, which has a special effect on the response of structures in these areas. This is the necessity of studying these works. In this research, the scope of earthquake records has a speedy pulse, and the method based on the chirplet algorithm is used to extract the pulse from the earthquake record near the fault and examine the characteristics of the earthquake near the fault. And then examines the effects of pulse on steel flexural frame.
