预应力砌块墙体抗裂性能

Anticracking behavior of prestressed masonry

通过预应力砌块墙体有限元模拟分析,研究了预应力对砌块墙体结构抗裂性能的影响,探讨了有无预应力及不同预应力对砌块墙体受力性能的影响;分析了对同一结构施加不同预应力的差异性,给出了最大主拉应力产生的位置及裂缝发展的区域. 分析结果表明,砌块墙体结构的承载能力平均提高1.65倍;施加不同预应力对砌块墙体中裂缝的产生位置和范围影响不大.

The paper deals with the effect of the adoption of prestress on the structural anticracking behavior through the analysis of finite element method. The adoption of prestress enhances the cracking load and utilizes the masonry resistance ability effectively. Simultaneously, the paper compares the structure behavior with different prestress load and gives the location where the principal stress occurs and the area of crack.