Analysis of research status of dry connection prefabricated reinforced concrete frame structure
Dry connection prefabricated buildings,characterized by high construction efficiency and energy-saving and environmental protection,align with China's strategic goals of"carbon peak"and"carbon neutrality".However,the seismic performance of these buildings is insufficient,limiting their application in high-intensity seismic zones.In recent years,the maturation of energy-dissipating technologies has significantly enhanced the seismic resistance of dry connection prefabricated buildings.This study focused on the dry connection of precast beam-column joints in prefabricated reinforced concrete frame structures,systematically reviewing the construction methods and application of energy-dissipating technologies,including prestressed connections,steel connections,and steel energy-dissipating hinge joints.Additionally,a brief discussion was provided on the use of infill walls and floor slabs in dry connection prefabricated reinforced concrete frame structures.The research indicates that energy-dissipating technologies can effectively improve the energy dissipation capacity of dry connection joints,thereby reducing damage to the main structure.By integrating the application of prestressed reinforcement,bolted connections,soft steel dampers,and friction energy-dissipating devices(materials),the structure can achieve concentrated seismic damage,minimal residual deformation,and rapid post-earthquake repair.However,current prefabricated energy-dissipating joints primarily possess one or two of these functions,with designs incorporating all three being rare.Current research is primarily focused on joints,lacking systematic studies on the overall prefabricated frame structures including floor slabs and infill walls.Future research should adopt a holistic approach to the structure,utilizing new materials and technologies to enable multi-element collaboration and provide the structure with multi-level energy dissipation mechanisms and diverse seismic resistance functions.
万方数据
维普
