Multichannel Analysis of Surface Waves Method-Based Interfacial Debonding Defection for Concrete-Filled Double-Steel-Plate Composite Walls
Publication: Earth and Space 2021
ABSTRACT
Recently, the concrete-filled double-steel-plate composite walls (CFDSPCWs) have been widely applied in ultra-high-rise civil infrastructure due to their excellent mechanical properties. It is urgent to develop the nondestructive testing method for the debonding detection of CFDSPCWs to guarantee the mechanical performance and structural safety of civil structures. In this study, the feasibility of multichannel analysis of surface waves method (MASW)-based interfacial debonding defection for CFDSPCWs was investigated. The 2D and 3D finite-element models of CFDSPCWs were established, and the detailed wave propagation process in CFDSPCWs was numerically simulated. The influence of the dimension of CFDSPCWs and thickness of the steel plates on the wave fields in CFDSPCWs with and without debonding defects was discussed respectively. The relationship between the excitation signal frequency and the geometry variation of CFDSPCWs was analyzed in depth. The numerical finding indicates that the interfacial debonding defects in CFDSPCWs can be detected using the proposed method. The research findings can provide referential significance to the practical application of interfacial debonding defection for CFDSPCWs using the MASW method.
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Earth and Space 2021
Pages: 425 - 433
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© 2021 American Society of Civil Engineers.
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Published online: Apr 15, 2021
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