Experimental Study on Natural Frequency Variation Regulations of Simply Supported Externally Prestressed Concrete Beams

Abstract:

In order to study the relationship between prestress and natural frequencies and the factors of influence natural frequence change, a dynamic test on three simply supported externally prestressed concrete beams of different prestressed level was carried out. The results showed that the eccentricity and arrangement of externally prestressed tendons and the constraints have more influence on natural frequencies than prestress itself. The prestressed effect comes from combined action of the several factors, and the natural frequencies of beams were found to agree well with the prestress. It appears that higher order frequencies have greater increment usually.

• Periodical: Applied Mechanics and Materials (Volumes 351-352)
• Pages: 1043-1046
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.351-352.1043
• Online since: August 2013
• Authors: Gang Xue, Chong Ge Wang
• Keywords: Dynamic Test, Natural Frequency, Pre-Stress

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