Principle analysis and teaching experiment design of pendulum dampers in high-rise buildings
[Objective]With the continuous development of the structural system in high-rise buildings,pendulum dampers have become widely used to enhance the comfort and safety of these structures.However,the complexity and abstractness of the vibration reduction principle of pendulum dampers challenge the high-quality teaching of the structural design course of high-rise buildings in colleges and universities,which presents significant obstacles to the training of innovative talents in the field of structural engineering.To achieve high-quality education and effective research,a demonstration model that clearly illustrates the damping effect of pendulum dampers needs to be established.This demonstration model will aid students in mastering relevant theories and realizing independent innovation in building structures.[Methods]Based on the existing shaking table device,a simple structural model of a high-rise building was constructed using bamboo,glue,and weights.By adjusting different excitation forces,the vibration effects were demonstrated both with and without a pendulum damper.In this study,mechanical schematic diagrams were obtained from the demonstration models,and a mechanical principle analysis was performed.Teaching was conducted in combination with the demonstration model so that the students could clearly and intuitively understand the vibration reduction principle,resonance effect,and vibration characteristics under different amplitude and frequency conditions.This approach deepened the students'understanding of relevant theories and enhanced their analytical ability.Following the teaching demonstration,the students were encouraged to independently operate the teaching experiment,repair the broken nodes,and innovate the structural model.Through this method,students'comprehension of relevant theories and understanding of structural vibration damage was improved,and students'practical ability and innovative thinking were enhanced.This research established the teaching mode that integrates model demonstration,principle analysis,and practical innovation,ensuring high-quality teaching outcomes.[Results]By combining the teaching mode of experimental design,principle analysis,and practical innovation,students'understanding and interest in damping principles and mechanics are enhanced.The students'subjective initiative and innovative thinking in experimental research are stimulated,significantly improving teaching quality and effectively addressing the issue of a poor theoretical teaching effect.The experimental process and analysis involve various disciplines,such as material engineering,structural engineering,structural dynamics,and vibration,which enhance students'ability to comprehensively utilize multidisciplinary knowledge to solve practical problems.In addition,teaching resources can be integrated on this basis,and relevant discipline competitions can be set up to improve resource utilization and ensure teaching outcomes.[Conclusions]The demonstration teaching experiment design can make the complex mechanism and theory more comprehensible for students,thereby fostering deeper thinking and exploration into pendulum damping and vibration reduction in high-rise buildings and enhancing teaching effectiveness and quality.Adopting this novel teaching mode is crucial for cultivating students'scientific research,practice abilities,and innovative thinking abilities.Ultimately,this novel teaching mode is proven to be a direct and effective method to elevate the quality of talent training.
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