查询词典 tubular girder

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。

Profiling armor plate passes solder hammer and floor structure girder to suffer force effectively to work jointly, achieve steel structure bridge and ferroconcrete wing cut force to deliver.

压型钢板通过焊钉和楼面结构钢梁有效地共同受力工作，实现钢结构梁和钢筋混凝土翼板的剪力传递。

In recent years, PC curved box-girder is applied more and more in construction of express high way and grade-separation bridges for its economy 、 fine figuration and favorable construction methods. However, people met with a lot of difficulties.

随着高等级公路建设的发展以及城市立交桥建设的需要，预应力混凝土弯箱梁桥以其经济、美观、实用的特点在我国的桥梁建设中已经被广泛的采用。

For the local flatting problem of cross-section, that can be seemed as a problem of curve girder bending under outside force, is analyzed by FEM, which can not be easily calculated by theoretical method. And there comes to the result that both roller position and initial angel have little influence on cross-section flatting.

对理论计算所不容易解决的管截面局部压塌的问题，用有限元模拟的方法进行了分析，结果表明辊轮位置和初始弯曲角对管截面扁化的影响较小。

Haicang Bridge is the first in Asia, second in the world, the three-span continuous steel box girder all floating suspension bridge.

海沧大桥是亚洲第一、世界第二的三跨连续全漂浮钢箱梁悬索桥。

According to theory analysis and example computation, the following conclusions are obtained.1. During the analysis on the cable shape in the suspension bridge"s completion state, the pre-displacement of saddle and the case that the cable and stiff girder commonly bear the second-stage dead load should be considered.2. When supposing the construction ideal initial state in the first time, if the initial state model is established according the cable"s span central sag in the bridge"s completion state, and the reasonable correction formulation is created in the iteration process, the result can converges fast.3. The cable shape in the bridge"s completion state is not parabolic, nor catenary. It is between parabola and catenary. Actually it is funicular polygon closer to the catenary.

通过理论分析和实例的计算表明：1在悬索桥主缆成桥线形分析过程中，须考虑主塔鞍座的偏位以及二期恒载由主缆和加劲梁共同承担的实际情况；2在第一次假设施工理想初态时，以成桥状态已知的主缆跨中垂度建立施工理想初态模型，同时在迭代计算的过程中，建立合理的修正公式，才能使收敛的速度快：3在成桥状态时主缆的线形既不是抛物线，也不是悬链线，而是介于抛物线与悬链线之间，更接近于悬链线的索多边形。

Otherwise, it also considers the restriction of joint bending moment between steel gilder and concrete girder.

基于提出的模型，将复合形法应用于索力优化中。

Combined with general engineering condition,the author introduces technological principle,characteristics and process of hollow slab beam erection construction using unipod gin pole combined with single leading-in girder method,illustrates its construction method,and points out its construction quality and safety notices,which is worthy to be popularized.

结合工程概况，介绍了独脚扒杆结合单导梁法架设空心板梁的施工工艺原理及工艺特点、工艺流程，并详细阐述了其施工方法，指出施工质量安全注意事项，具有一定的推广价值。

He is a girder of this family.

他是这个家的顶粱柱。

To some extent, the conclusions in this paper have a reference value on the box girder bridge design and construction.

本文所得出的结论在一定程度上对箱梁桥的设计和施工有参考意义。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"