摘要
针对公路钢桥加固工程中常用的体外预应力加固技术 ,采用结构动力学原理建立了无粘结预应力索梁组合钢桥的二阶固有振动方程。数值算例表明 ,只有按照曲线形式布置体外预应力钢束 。
The technology with the outbody's non bonded prestress tendons is usually used for the project of the steel bridge strengthened.Two order vibration equations for the steel beam bridges with outbody's non bonded prestress tendons are derived by using the theories of the dynamic mechanics.The conclusion drived from a numeric example shows that can natural frequency of steel beam bridges be increased only by curving non bonded prestress tendons.The reference base is given to strengthen old steel bridges.
出处
《西安公路交通大学学报》
CSCD
北大核心
2000年第4期23-25,共3页
Journal of Xi'an Highway University
关键词
钢梁桥
无粘结预应力
动力分析
固有频率
steel beam bridge
non bonded prestress
dynamic analysis
natural frequency
