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| Seismic response analysis of basin site under SV wave with different incident angles |
| 1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. College of Tranportation Science ＆ Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, China |
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Abstract To analyze the ground motion response of basin site under seismic wave with different incident angles, based on computing platform of ABAQUS, the basin model with fixed slope angle of 45°and Dirac pulse as inputting SV wave was established by explicit FE method, and the peak ground displacements(PGD) were obtained. The results show that when the incident angles of input waves are increased in sequence from 0° to 5°, 10°, 15°, 20°, 25° and 30°, the surface PGD of basin are increased with latter decreasing. The surface PGD reaches the maximum value when the incident angle is 10°, which is 7.69 times of the amplitude of input seismic wave. The analysis results are partially unsafe if the vertical incidence is considered. Compared with vertical incidence case, the edge effect of basin is more significant under seismic wave with different incident angles, and the maximum value of edge PGD is about 1.3 times of that in the center of basin. The seismic response focus area gradually shifts to the right side of basin when the incident angle is increased.
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Received: 23 February 2017
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2018, Vol. 39 
