为了能够准确计算复合材料层合梁在静载条件下位移及应力，本文提出一种新型的层合梁模型。该模型初始位移场由整体与局部两部分组成，通过局部位移变量及形函数来描述每一层的位移趋势，并根据层间位移和剪切应力连续条件及剪切应力在层合梁上下表面自由条件，可获得由6个位移变量表示的该模型最终位移场。最后通过经典案例，数值验证表明：该模型能够准确计算静载条件下层合梁的面内位移及应力，特别是准确横向剪切应力无需任何处理，可由本构方程直接得出，方便于工程应用

In order to accurately calculate displacements and stresses of laminated composite beams under static loading, this paper develops a new model for laminated beams. The initial displacement field of the model includes two parts which are global and local displacements. Each layer of laminated beams can be depicted by local displacement unknown variables and shape functions, meanwhile by using displacement and shear stress continuous conditions between layers and up-down face transverse shear stress free conditions, the final displacement field of the model can be expressed by six unknown displacement variables. Finally through a classical example, numerical results of the model show that this theory is able to provide accurate in-plane displacements and stresses, and especially the accurate transverse shear stress without any process may be obtained from constitutive equations directly, which is benefit for engineering applications