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预应力结合梁的预应力偏心荷载效应,使该类结构受力全过程存在挠曲一滑移非线性。本文针对具有预应力效应的结合梁,考虑预应力等效荷载产生的轴力及偏心弯矩,通过虚功原理计算考虑层间界面滑移的梁段平衡微分方程。同时,再根据不同边界条件,得到预应力结合梁变形的解析解。为了验证模型和解析计算结果,利用通用有限元软件对预应力结合梁变形进行了有限元分析,结果表明了梁段平衡微分方程的正确性和适用性。
Prestressed composite beams prestressed eccentric load effect, so that the structure of the whole process there is a deflection of a non-slip. In this paper, considering the axial force and eccentric bending moment caused by the prestressed equivalent load, the beam differential equations considering the interfacial interface slip are calculated by virtual work principle. At the same time, according to different boundary conditions, an analytical solution of the deformation of prestressed composite beams is obtained. In order to validate the model and analyze the calculation results, finite element analysis of the deformation of the prestressed composite beams is carried out by using the common finite element software. The results show the correctness and applicability of the balanced differential equations of the beam sections.