摘要
为检测刚架拱桥——慈广大桥的动力性能,通过有限元建立其空间模型并进行动力分析,获得该桥的理论固有频率和振型,同时对该桥进行了动载试验研究。理论结果与试验结果比较分析表明,计算基频比实测基频小。理论基频和实测基频的数值都比较大,表明该桥整体刚度较好,具有一定动力安全储备,结构动力特性满足工程要求。
In order to test the dynamic performance of rigidframe Ci-Guang Bridge, a dynamic analysis with space finite element was made. At the same time, a dynamic loading test was implemented. Through comparing the theory results and the test results, we can conclude that calculating vibratory frequency is smaller than actual vibratory frequency. When the theoretical vibratory frequency and spot vibratory frequency are both big, it means that the integrate rigidity of the bridge is good, and the structure dynamical characteristic can satisfy the engineering requestment.
出处
《山东交通学院学报》
CAS
2010年第3期36-41,共6页
Journal of Shandong Jiaotong University
关键词
刚架拱桥
固有频率
振型
动力特性
rigidframe arch bridge
natural frequency
vibration mode
dynamic characteristic
