Open AccessMeta-Analysis for Influence of Prestress Force on the Natural Frequency and Prestress Loss of Concrete Member
Author(s) -
Hussam K. Risan,
Rana I. K. Zaki
Publication year - 2022
Publication title -
european journal of engineering and technology research
Language(s) - English
Resource type - Journals
ISSN - 2736-576X
DOI - 10.24018/ejeng.2022.7.1.2574
Subject(s) - natural frequency , vibration , meta analysis , inclusion and exclusion criteria , structural engineering , mode (computer interface) , normal mode , standard deviation , statistical analysis , statistics , computer science , mathematics , engineering , acoustics , physics , medicine , alternative medicine , pathology , operating system
The effect of prestress force value on the dynamic characteristic members dynamic characteristics been excessively argued among researchers till now. This study aims to perform a statistical method based on a meta-analysis investigating the influence of prestressing force on the first mode shape natural frequency of a prestressed reinforced concrete member and the related prestressing loss. The prior trials extracted from ScienceDirect, Scopus, Clarivate, and Research Gate electronic databases were used. The inclusion criteria encompass previous trials concerning experimental investigations of vibration frequencies as a function of prestressing force level with data capable of covert statistically to more meaningful information. Both analytical and numerical trials were excluded in this study. Twelve trials were matched with the objective of this review paper and satisfied the inclusion and exclusion criteria. A fixed-effects model type of meta-analysis was carried out based on the standardized mean difference. The present study shows a medium role for the prestress force in effecting the first vibration natural frequency mode. The total effect size is 0.93 standard deviations with 0.562-1.280 confident interval. The synthesized statistical analysis proves the efficiency of the meta-analysis method in predicting the influence of prestressing force on first eigenvalue frequency.