The Analysis on the First Order Vibration Frequency of Post-tensioned Unbonded Pre-stress Concrete Beam
In order to study the influence on structural vibration from pre-stress and eccentricity, a experiment is designed. After analyzing the experimental results of 9 groups of modal tests on a post-tensioned unbonded pre-stress concrete beam, the following conclusions can be drawn: The influences on first order vibration frequency which are caused by eccentricity and pre-stress really exist. The rules of influences brought about by eccentricity and prestress on first order vibration frequency are complicated. When the eccentricity is close to the centroid, the linear correlation between the prestress and the first natural frequency will be good, on the contrary, the nonlinear will be strengthened. The first order vibrational frequency of the tested beam will go up with the increase of pre-stress.
Pre-stress Eccentricity Vibration Frequency
Jinbo Ma Lijun Wang Ting Tang
Tianjin Campus, Naval University of Engineering, Tanggu 300450, Tianjin, China Tianjin Campus, Naval University of Engineering, Tanggu 300450, Tianjin, China Department of Naval A
国际会议
上海
英文
107-111
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）