Abstract：Due to the close distance of the fault, near-fault ground motions generally do not satisfy the assumption of vertical incidence after a limited number of reflections and transmissions. At present, the research on the seismic performance of asphalt concrete core dams rarely considers the influence of oblique input pulse-type ground motion.This paper selects appropriate near-fault pulse-type and non-pulse-type ground motion records. After considering the complete wave field decomposition scheme, the calculation formulas of the equivalent nodal forces on the left, bottom and right interfaces are derived when the SV wave is incident obliquely.The effects of near-fault pulse characteristics and oblique incidence angle on the acceleration, stress of the asphalt concrete core wall, and the permanent deformation of dam are analyzed. The results show that the vertical response of the asphalt core dam increases more significantly than the horizontal response as the incident angle increases. The pulse characteristic of ground motions has a significant impact on seismic responses, the response results of vertical input pulsed SV wave and oblique input non-pulse SV wave are significantly smaller than those of pulsed SV wave under oblique incidence.
刘琳，宋志强，王飞，刘云贺. 近断层SV波斜入射下沥青混凝土心墙坝响应分析[J]. 振动与冲击, 2021, 40(21): 97-105.
LIU Lin, SONG Zhiqiang, WANG Fei, LIU Yunhe. Response analysis of asphalt concrete core dam under oblique incidence of near-fault SV wave. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(21): 97-105.
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