平截面假设

以平截面假设为基础，利用截面内力平衡关系，推导出钢筋混凝土双向偏压构件截面割线刚度、切线刚度矩阵计算的简便公式。

Secant stiffness matrix and tangent stiffness matrix of reinforced concrete arbitrary cross-section members with eccentric compression load are derived , on the base of plane assumption and the cross-section equilibrium equations .

基于平截面假设，采用一种新的简便的截面高斯积分法，对钢筋混凝土异形截面柱轴压比限值进行数值分析，并编制了相应的计算程序。

On the basis of plane assumption , a new and simple cross-section Gauss integration method is adopted to numerically analyze the ultimate axial compression ratio for reinforced concrete irregularly-shaped columns , with corresponding software being finally programmed .

刚臂CC只是说明了在剪力墙中可以应用平截面假设。

The rigid arm CC is simply a statement that the " plane sections " hypothesis may be applied to the shear wall .

该方法基于塑性增量理论，应用塑性成形过程的体积不变假设和弯曲过程的平截面假设。

The proposed method is based on the incremental theory , volume invariance and planar cross_section are assumed .

退化梁单元采用基本的平截面假设，并用轴线节点位移来表示梁单元的三维位移场。

Under the assumption of plane section , the3D displacement field equation is discretized in terms of nodal displacements .

在初应力位形上附加变形场论的框架下，引入自然坐标系，采用平截面假设，建立对数值方法和解析方法十分有用的、初应力曲拱位移变分方程。

Under the natural coordinate system of arch axis , a variational formulation equation is established for arches with initial stress .

计算夹层梁的力学性能的经典模型基于平截面假设和横向不可压缩假设，这种假设限制了梁的真实响应。

The classic model of calculating the mechanical properties of the sandwich beam is based on the plane cross-section assumption and the transverse incompressible assumption , which limit the real response of beam .