预应力区域约束混凝土梁性能研究

Study on the performance of prestressed concrete beam confined by prestressing force

预应力区域约束混凝土梁是由约束钢筋、预应力钢筋和混凝土构成,通过对预应力筋张拉在约束混凝土区域施加预应力,从而构件达到最佳应力状态。在线性理论分析预应力区域约束混凝土梁的基础上对构件的受力性能,破坏机理及计算方法进行了相关的研究,对构件的受力特点和破坏机理进行了分析,并且在理论分析的基础上运用有限元软件对构件进行了有限元模拟分析,通过分析结果验证了计算结果的可行性,为以后进行相关方面的研究积累了经验。

The prestressed concrete beam is composed of restrained steel bar,prestressed steel bar and concrete,the prestressing force is applied to the prestressed concrete in the confined concrete area to achieve the optimum stress state. In this paper,the mechanical properties,failure mechanism and calculation method of the prestressed concrete beams are studied on the basis of the linear analysis of the prestressed concrete beams. And on the basis of theoretical analysis using the finite element software of components was analyzed by finite element analysis,the analysis results verify the feasibility of calculation results,for future research related experience.