【摘要】 针对润扬长江大桥北汊斜拉桥的修正模型,通过数值模拟研究了斜拉桥拉索损伤位置的识别问题。提出了综合运用斜拉桥竖弯振型频率变化、主梁模态曲率变化以及拉索索力变化进行拉索损伤位置识别的实用方法。更多还原

【Abstract】 Based on the updated finite-element model of the cable-stayed bridge (north bridge) of Runyang Changjiang River Bridge, the identification of damages in stay cables of cable-stayed bridges is investigated by means of numerical simulation. A practical method of identifying the locations of the damages in stay cables is proposed by combination usage of the frequency change of vertical bending vibration mode, the modal curvature change of the main girder and the change of stay cable force of the cable-stayed bridges.更多还原