【摘要】 为了用少量单元获得高精度的混凝土箱梁空间应力计算结果,提出考虑截面形状组成并在梁轴方向应用高阶位移插值函数的中厚板梁段结构分析方法。以杭州湾跨海大桥非通航孔桥梁的设计方案为例,与三维实体有限元计算结果的比较表明,该方法在梁纵向只需划分少量单元就可以得到高精度的结果,适用于壁厚变化的大截面混凝土箱梁桥结构的计算分析。更多还原

【Abstract】 In order to obtain accurate spatial stresses of box girder with a small number of elements,an analytical method for large-section PC box girders is proposed.A higher order displacement function in the axial direction is introduced,and the section composition is considered.Taking the Hangzhou Bay Bridge as an example,both 3-D solid FEM and the proposed method are compared.The results indicate that high accuracy can be achieved with a small number of elements by using the proposed method.更多还原