Synergistic design of mechanical properties between implantable sensor and concrete based on three-dimensional refined numerical model

Abstract

With the ongoing advancement in the construction and development of intelligent infrastructures, there has been a significant integration of sensors within structures. Portland Cement Concrete (PCC) pavement, being a predominant form of transportation infrastructures, necessitates comprehensive analysis due to its critical role. Given that flexural strength is a paramount design criterion for PCC pavements, concrete beams are selected as the primary focus for this study. Initially, a sophisticated three-dimensional numerical model is constructed. This model intricately incorporates the concepts of concrete damaged plasticity (CDP) and the cohesive zone model (CZM) to examine the interaction between the sensor and the concrete beam. The veracity of the numerical model is rigorously validated through methodical three-point bending tests, ensuring its reliability and accuracy. Subsequently, an innovative method for the synergistic design and assessment of the mechanical properties of the implantable sensor in conjunction with the concrete component is introduced. This methodology is underpinned by a novel synergistic performance index system. The system is stratified into different layers, with synergy degree as the target layer, and bearing performance, deformation coordination, and damage control as the criterion layer. In the final phase of the research, the study delves into the impacts of various factors such as size parameters, packaging materials, and positioning of the sensor on its synergistic performance with the concrete. The insights derived from this research are poised to offer valuable guidance for the integrated synergistic design of sensors. This is envisioned to facilitate optimal integration, ensuring long-term and precise monitoring of concrete structures, thereby contributing significantly to the field of intelligent infrastructure construction and maintenance.