摘要
引入灵敏度分析方法 ,根据结构固有频率的变化 ,识别结构弹性支承参数 ;以 8跨连续梁桥为对象 ,给出实测振动数据 ,根据前 5阶固有频率 ,识别了包括盆式橡胶支座在内的支墩竖向刚度和用弹性模量表示的截面抗弯刚度 ;用实测振型检验识别结果 ,两者吻合良好 ,从而说明了该方法的可靠性。
Using sensitivity analysis method, authors identified structural elastic support data based on the change of natural frequency measured from bridges.Taking a 8 spans continuous bridge as example, authors identified the piers' vertical rigidity which included basin rubber bearings and sectional bending rigidity described by elastic module using measured first five frequencies. The results were verified by the measured mode shapes.It shows good accordance and great promise of the method presented in this paper.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2002年第4期28-31,共4页
China Journal of Highway and Transport
基金
国家自然科学基金项目 ( 599780 15)
