梁

This paper describes chiefly the basic principle and method of the optimum design of the crane girder by using the feasible direction method.

本文主要阐述用FDM方法对起重机主梁进行优化设计的基本原理和方法，并对儿种主梁进行了初步计算。

The results also indicate that, for murine femora, the scan setup can impact densitometry measurements for both cortical and trabecular bone and morphologic measurements of trabecular bone.

研究结果还表明，对小鼠股骨，扫描设置会影响骨皮质和骨小梁的骨密度测量和骨小梁的形态测量。

But the development of people built bridge and ferry have limitation owning to short of institutional indemnificatory.And even though government don't be in the primary status,but it played a role as advocator,leader and supervisor in the local society.

但是民修津梁的发展缺乏制度的保障，存在很多缺陷，而官府在地方津梁修建中虽然不占主导地位，但是官府在各地也起了很重要的提倡、引导和监督、管理作用。

According to the series of finite element equations, the nonlinear static program and dynamic program of three dimensional beam element are worked out and proved to be feasible and credible through a great deal of calculation examples.

根据推导的一系列有限元方程，编制了三维梁单元非线性静力程序及三维梁单元非线性动力分析程序，并选取大量算例对三个程序进行验证，证明程序是可行的和可靠的。

Several parameters for the fire resistance on cross section of a reinforced concrete T-beam exposed to the ISO834 standard fire are analyzed,including the fire time and the ration of load.

结合国内外建筑结构火灾试验，引入开裂准测和非线性本构关系，提出了火灾下结构有限元分析思路，利用数值模拟程序分析了火灾高温下钢筋混凝土T梁截面的温度分布，研究了火灾时间、荷载比对ISO834标准火灾升温过程下钢筋混凝土T梁桥挠度的时变效应规律及开裂状况。

Two kinds of methods to estimate the first derivative of rotating angle in the cracked section are presented.

针对J〓积分中的裂纹韧带曲率的计算问题，给出了两种简单的计算方法，即等截面梁估算法和椭圆边界变截面梁估算法。

The analytical solution of the beam response was obtained by applying the Fourier integral transformation and the residue theorem, followed by a comprehensive parametric study to investigate the effects of the subsoil depth, the material stiffness and the load speed on the beam response.

运用Fourier积分变换和留数定理对动力控制方程进行求解，得到了平面应变条件下覆盖于基岩的均质弹性层和非均质弹性层地基上梁的动力响应解析解，并进一步分析了荷载运动速度、地基厚度及地基非均质性等对梁变形的影响规律。

In order to solve these problems, I develop a pre-process program using MATLAB to generating 3D solid element model and simulating the three-dimension prestress.

本文针对上述用三维实体单元模型分析箱梁时遇到的问题，编制有限元分析前处理程序，快速生成各种类型的箱梁模型，并对三向预应力效应进行模拟。

The geometrical nonlinear finite element formulations for both girder and tendon are proposed based on the present girder configuration.

基于预应力钢梁的梁与索的现实构形，论文中分别推导了梁与索的几何非线性有限元方程。

But most of their work are focused on the straight girder bridges.

但是他们的研究均是针对直线梁进行研究的，而对曲线梁桥的支座布置形式的研究较少。

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％。