In order to accelerate the development of research and detection technology for prefabricated concrete structural components,a new type of prefabricated reinforced concrete column structure,assembly technology,and detection method were introduced based on practical engineering.The conclusion is as follows:The new prefabricated reinforced concrete column signifiicantly improves the quality of joint connection,making on-site assembly more flexible,and the tolerance error is greater than that of grout-sleeve connection;Due to different maintenance techniques,the concrete strength of the cast-in-place connection section will be slightly lower than that of the prefabricated section;The root of the cast-in-place connection node is prone to honeycomb phenomenon;When the concrete grade is between C50 and C60,both high-strength concrete rebound instruments and ordinary concrete rebound instruments should be used for strength estimation;Ultrasonic phased array radar can effectively detect internal defects in the connection section,but the gain size needs to be adjusted and combined with steel distribution and engineering experience to identify defects.This new type of prefabricated reinforced concrete column provides a new prefabricated component for prefabricated concrete structures,and its engineering experience can provide reference for similar projects.
维普
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