预应力混凝土梁CFRP加固设计研究

以实际工程为背景,针对预应力混凝土梁CFRP加固的抗弯受力性能进行了研究。研究中运用了基于材料非线性本构关系的有限元分析及参照现有加固规范的计算分析,并对不同的分析结果进行了比较。经分析对比,参照规范得出计算结果具有足够的安全余量,可用于实际工程的设计计算,但此方法对预应力梁的裂缝、挠度等特性无法描述,需要进一步研究。

Study on the Design of a Prestress Concrete Beam Strengthed by CFRP

Based on a practical building project,the bending resistance properties of adopting CFRP strengthening method are studied for prestress concrete beam.The finite element analysis method based on material nonlinear constitutive equations is applied.Calculation and analysis are done according to relative strengthening design codes and some comparisons on the analysis results are done as well.By the analysis comparisons,the results have enough safety margins according to the code and can be applied to the practical project design and calculation.However,this method can not describe properties like cracks and deflection for the prestress beam,so further research need to be done.