Based on basic principles of grillage method, an improved grillage model of wide cantilevers bridge deck is brought forth and its effectiveness is verified after generalizing rules of grillage meshing and sectional characteristic.

• 基于梁格法的基本原理，提出了宽翼缘上部结构分析的改进梁格模型，并总结了梁格单元划分和截面特性计算的一般方法，最后通过算例验证了该模型和方法的有效性。