To integrate insulation and load-bearing functions in prefabricated composite wall structures,a novel design based on fiber-reinforced expanded polystyrene(EPS)con-crete is proposed.The research focuses on three key a...To integrate insulation and load-bearing functions in prefabricated composite wall structures,a novel design based on fiber-reinforced expanded polystyrene(EPS)con-crete is proposed.The research focuses on three key as-pects:material properties,seismic performance,and ther-mal performance.Firstly,the compressive strength and thermal conductivity of fiber-reinforced EPS concrete were analyzed at different sand ratios,leading to the development of an optimal mix design and a damage constitutive model.Secondly,a combination of experimental and numerical analysis methods was used to investigate the seismic perfor-mance of prefabricated composite walls with different infill materials,including autoclaved aerated fly ash and fiber-reinforced EPS concrete.Finally,thermal perfor-mance studies were conducted on prefabricated composite wall panels with different infill materials.The results indi-cate that the specimens underwent elastic,elastoplastic,and failure stages during loading.While specimens using EPS concrete exhibited a slightly lower overall bearing capacity,they demonstrated superior ductility,energy dissipation ca-pacity,and enhanced insulation and thermal stability.展开更多
基金The National Natural Science Foundation of China (No. 52168022)。
文摘To integrate insulation and load-bearing functions in prefabricated composite wall structures,a novel design based on fiber-reinforced expanded polystyrene(EPS)con-crete is proposed.The research focuses on three key as-pects:material properties,seismic performance,and ther-mal performance.Firstly,the compressive strength and thermal conductivity of fiber-reinforced EPS concrete were analyzed at different sand ratios,leading to the development of an optimal mix design and a damage constitutive model.Secondly,a combination of experimental and numerical analysis methods was used to investigate the seismic perfor-mance of prefabricated composite walls with different infill materials,including autoclaved aerated fly ash and fiber-reinforced EPS concrete.Finally,thermal perfor-mance studies were conducted on prefabricated composite wall panels with different infill materials.The results indi-cate that the specimens underwent elastic,elastoplastic,and failure stages during loading.While specimens using EPS concrete exhibited a slightly lower overall bearing capacity,they demonstrated superior ductility,energy dissipation ca-pacity,and enhanced insulation and thermal stability.
