梯度波阻板的地基振动控制研究力学学报.PDF

49 6 Vol. 49 No. 6 2017 11 Chinese Journal of Theoretical and Applied Mechanics Nov.2017 1) 2) (730050) (730070) (wave impeding blockWIB) . (functionally graded material, FGM) . Helmholtz (reverberation ray matrix methodRRMM) . . . . . . TU 45 A doi 101879-17-221 ANALYSIS OF GROUND VIBRATION CONTROL BY GRADED WAVE IMPEDING BLOCK 1) Ma Qiang Zhou Fengxi2) Liu Jie (School of Civil Engeering Lanzhou University of Technology Lanzhou 730050 China) (School of Tra c and Transportation Lanzhou JiaoTong University Lanzhou 730070 China) Abstract Wave impeding block (WIB) vibration isolation system as an eective measure for vibration pollution control is applied in practical engineering gradually, but the previous studies mostly focused on the single-phase solid homoge- nous materials, few research have been on the vibration isolation performance of wave impeding block with materials properties that have a continuous variation along space relatively. Based on the functionally graded material, a new type of foundation vibration isolation system is proposed. Considering setting the graded wave impeding block in the elas