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 7 预应力梁第1、3阶频率修正系数的发展曲线

Fig.7 Development curve of first and third order frequency correction coefficient for prestressed beam