预应力混凝土梁自振频率的疲劳演变

杜永潇,卫军,孙晓立

Fatigue evolution of natural frequency for prestressed concrete beam

Yong-xiao DU,Jun WEI,Xiao-li SUN

图 11 实测频率退化曲线及频率修正系数发展曲面

Fig.11 Measured frequency degradation curves and development surface of frequency correction coefficient