【摘要】 在不中断交通的条件下建立了运行试验模态分析的模态挠度法。该方法以挠度作为评价桥梁结构承载力的指标,利用来往车辆的激励响应测量数据获得桥梁结构的交通激励试验模态参数,推算出桥梁结构的静挠度,从而评定桥梁结构的承载力。实桥测试表明,该方法可用于桥梁承载力和使用状况评估。更多还原

【Abstract】 The mode flexibility method was built by running the experimental modal analysis under the condition of uninterrupted traffic. The method took the deflection as the indicator of bearing capacity of bridge structure,the bridge modal parameters could be discerned by analyzing the responding signal excited by traveling vehicles,and then the deflection was worked out to estimate the condition of bridge. In the end,the method was verified by a real bridge test.更多还原