基于模态振型的预应力混凝土梁损伤检测

Damage Detection of Pre-stressed Concrete Beam Based on Modal Shape

以预应力简支梁为例,通过Ansys有限元模型,分析模态振型在预应力混凝土结构损伤检测中的技术可行性。结果表明:模态振型不仅可以明确地确定结构损伤的存在,而且可以较准确地确定结构损伤的位置。所得结果对于预应力钢筋混凝土梁的健康状况检测具有一定的参考价值。

Taking a pre-stressed simple-supported beam as an example,the technical feasibility of modal shape in the damage detection of pre-stressed concrete structure is analyzed by ANSYS software.The result shows that modal shape can not only confirm the existence of structure damage,but also determine the location of structure damage more accurately.All results obtained have certain reference value for the health detection of the pre-stressed reinforced concrete beams.