内力

In the design, in construction process of the structural calculation of the upper part in the continuous bridge, the permanent load were simulated and calculated.

在设计中，桥梁上部结构的计算着重分析了桥梁在施工过程中，恒载内力的计算。

According to the hypothesis of continuum, a tube with the corner strengthened is gained to make an equal of the frame-tube. B3-spline functions and parabola functions are applied to simulate the displacement functions of the frame-tube. The system of equations about the undetermined coefficients of displacement functions is deduced by using energy-variational principle, by solving which the displacement of the frame-tube is gained. Then the internal forces in the columns and beams of the former frame-tube are obtained according to the principles of elasticity mechanics.

根据连续化假设将框筒等效为角部加强筒体，将三次样条函数与抛物线函数结合假定框筒的位移函数，运用能量变分原理推导出了关于位移函数待定系数的方程组，解得位移函数待定系数进而解得框筒的位移，再根据弹性力学原理确定原框筒中梁柱的内力。

To overcome the premature of simple genetic algorithm, the calculating efficiency of SGA is improved by the following two ways; Firstly, in order to ensure convergence of algorithm and reduce influence factor of convergence, elitist selection and adapted crossover and mutation operator are adopted. Secondly, because this study deals with finding minimize volume of structure, to quicken convergence of this problem, in line with mechanics criterion the paper carry out mutation to some genes in chromosome according to variations of internal force. This will let algorithms to search answer with our hoping directions.

针对基本遗传算法存在早熟的问题，本文主要从两个方面进行了改进，首先为了保证算法的收敛和减少影响算法收敛因素，采用了最优保护策略和自适应的交叉和变异算子；其次，由于本文研究内容涉及求结构最小体积问题，为了加快此类问题的收敛速度，本文结合结构优化中的力学准则，对个体染色体中的某一段基因按照内力变化进行变异操作，使得算法按一定方向进行搜索最优解。

In the analysis of sea ice dynamics, the drag forces, internal ice force, Coriolis' force and ocean tilt effect were calculated and contrasted.

在海冰漂移的动力要素分析中，本文对海冰的风和流拖曳力、海冰内力、科氏力和海面倾斜力等动力要素进行了讨论和对比。

And this paper assumes that resisting power is accordwith parabola, gets all arch as basic configuration, gets formulation from the condition that therelative corner , horizontal displacement and vertical displacement of vault section iszero,adds deformation condition of maximum resisting power and zero resisting power, solvesequation group to get the internal force of lining . And lining internal force computing methodunder bias load based on assumed resisting power method is formulized.

本文假定弹性抗力按二次抛物线分布，取全拱为基本结构，由拱顶截面的相对转角、相对水平位移和相对垂直位移为零的条件列出变形协调方程，再增加最大弹性抗力处的变形协调条件和弹性抗力为零处径向位移为零的变形协调条件，解方程组求解得出衬砌结构的弹性抗力分布及内力。

In this paper two-segment jibs of tower cranes with irregular guy arrangements and having various cross sectional shapes under the action of spaceforces were investigated, with due consideration to the effect of bending.

本文对任意布置、各种断面和腹杆形式的塔式起重机折臂杆，考虑结构空间受力状态以及初弯曲的影响，用矩阵位移法计算在结构自重、风荷载、制动力和吊重荷载作用下的臂杆内力、变形及其整体稳定。

Through calculation and analysis of static modal under dead load, live load and water load, we derived the non-seismic internal force and deforming of the structure.

通过对静力模型在恒载、活载和水荷载作用下的计算和组合，得到了结构非抗震设计的内力和变形。

All the displacements and internal forces can be then derived by solving the linear set of equations for the near- and far-end displacements.

在此基础上求解线性方程组，就可以得到结构的位移和内力。

The deflection curve differential equation of beam body structure on elastic foundation is solved, relationship of variables between its internal force and coefficient of elastic foundation is formulated.

通过求解弹性基础上梁体结构挠度曲线微分方程，建立了梁体结构内力与基础系数间的关系，分析了混凝土徐变等特性对梁体应力的影响。

Internal force and displacement analysis is an important step of structure design,and it is foundation of structure analysis.

内力及位移分析是建筑结构设计中至关重要的一个步骤，也是进一步结构分析的基础。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。