带肋预应力混凝土复合墙板的抗弯性能

将传统复合墙板平板层改为带肋层，优化截面的混凝土配置，从而降低复合墙板自重，在墙板两侧对称施加预应力筋，增强复合墙板的抗裂性能。为研究该混凝土复合墙板的抗弯性能，进行了3个试件在均布力作用下的抗弯试验，分析了该混凝土复合墙板的力学性能和变形模态。通过理论分析推导了该混凝土复合墙板的抗弯承载力计算公式，并采用ABAQUS软件进行了该混凝土复合墙板的对比模拟，并对肋板角度参数进行了模拟分析。结果表明：带肋预应力混凝土复合墙板与平板混凝土复合墙板存在近似的弯曲响应；带肋预应力混凝土复合墙板的抗弯承载力与平板混凝土复合墙板相比有所下降，但降幅小于自重降幅；预应力的施加显著提高了混凝土复合墙板的承载力和抗裂性能；提出的混凝土复合墙板的承载力计算公式、有限元模型均与试验结果吻合较好。

Flexural performance of ribbed prestressed concrete composite wall panels

The ribbed prestressed concrete composite wall panel changes the traditional composite wall panel layer into the ribbed layer, and optimizes the concrete configuration of the section to reduce the self-weight of the composite wall panel. Prestressed reinforcement is added to both sides of ribbed prestressed concrete composite wall panel, which can increase the crack resistance of composite wall panel. In order to study the bending performance of the ribbed prestressed concrete composite wall panels, the bending test of 3 specimens under uniform load was carried out, and the mechanical properties and deformation modes of the composite wall panel were analyzed. The calculation formula of flexural bearing capacity was derived through theoretical analysis. The comparative simulation and ribbed plate angle parameter analysis of the composite wall panels were conducted by the finite element software ABAQUS. The results showed that the ribbed prestressed composite wall panel had similar bending behavior to the traditional composite wall panel. The flexural capacity of the ribbed prestressed composite wall panels decreased, but its reduction was less than the self-weight reduction. The application of prestressing can significantly improve the bearing capacity and crack resistance of the composite wall panel. The proposed calculation formula of the bearing capacity and the finite element simulation results of the ribbed prestressed composite wall panels are in good agreement with the experimental results.