摘要
本文以简支梁桥为研究对象,利用ANSYS软件对其进行损伤模拟。获取了简支梁在两种工况下,不同损伤程度的1-3阶应变模态曲线。应变模态曲线会在损伤处出现尖峰,而且损伤程度越大,尖峰越突出,这是应变模态曲线对损伤程度最直观的反映。本文中对尖峰突起程度进行定量描述,并最终得出判定损伤程度的定量表达式。
In this thesis, ANSYS is used to simulate the damage of a simply supported bridge. The 1-3 order curves of the strain mode in two kinds of working conditions and in different damages are obtained. The curve of the strain mode shows that spike will appear at the damage position. The more serious the damage is, the sharper the spike will be. This is the most obvious reflection to the damage. The spike is described quantitatively, and a quantitative expression to identify the damage is presented.
出处
《工程与试验》
2013年第3期22-25,共4页
Engineering and Test
关键词
简支梁桥
应变模态
尖峰
损伤位置
simply supported bridge
strain mode
spike
damage position
