Abstract：A formula for calculating frequency of externally prestressed beam is derived from classical frequency equation with the influence of axial force and bending moment. In this paper, strengthening of six beams with simply supported ends by externally prestressing are experimentally investigated. The main influences and the practical feasibility about the formula discussed.
张耀庭. 体外预应力梁自振频率的理论与实验研究[J]. 铁道工程学报, 2005, 22(2): 34-37.
ZHANG Yao-ting. THEORETICAL AND EXPERIMENTAL STUDY ON THE NATURE FREQUENCY OF EXTERNALLY PRESTRESSED BEAM. 铁道工程学报, 2005, 22(2): 34-37.
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2005, Vol. 22 
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