桥梁

A large proportion of bridges in china are Arch bridges, and the arch bridges distributing are also wide. For assuring transportation safety, having the existing arch bridges to be used sufficiently, it is necessary to do proper reliability evaluation for the arch bridges.

我国在役桥梁中拱桥所占比重大，分布地广，为了保证公路交通安全，充分发挥在役桥梁的作用，需对拱桥的可靠性做出恰当的评估。

By applying the sinusoidal wave mode to simulate the rugged surface of bridge deck,accounting for vehicle-bridge interaction and using Euler-Bernoulli beam theory, a coupling vibration model of vehicle-bridge system was developed. The model was solved by mode analyzing method and Runge-Kutta method, and the dynamic response and the resonance curve of the bridge were obtained. It is found that there are two resonance regions, one represents the main resonance while the other the minor resonance, in the reson...

通过用正弦波形模拟桥面的不平和考虑移动车辆-桥梁间的相互作用，在Euler＿Bernoulli梁理论的基础上建立了一种车桥系统的耦合振动模型·利用模态分析法和Runge＿Kutta法对模型进行数值求解，获得了车桥系统耦合振动的动态响应和共振曲线·发现车桥耦合振动的共振曲线中存在两个共振区域，一个反映主共振而另一个反映次共振·讨论了桥面不平、桥梁振型和车辆间的相互作用对系统振动的影响·数值结果表明，这些参数对系统振动的影响很大，桥面不平和振型对车桥系统耦合振动的影响不能忽略，设计车速应该远离临界车速

In this paper, based on deteriorating resisting force model and load model, the ultimate state equations of RC bridge were established; the code to calculate the time-dependent coefficient of reliability were composed as well.

论文在抗力衰减模型和桥梁荷载模型的基础上，建立了RC桥梁结构极限状态方程，编制了结构随时间变化的可靠指标计算程序。

And it can avoid upper air works to ensure the construction quality.

桥梁转体施工工艺是在深山峡谷、悬崖陡壁、地形险峻的桥位上架设桥梁的有效方法。

But recently little research of externally prestressed concrete bridges is carried out in our country.

体外预应力结构在许多国家得到了广泛的应用，且已经引起了国内桥梁界的广泛关注，然而目前国内对体外预应力混凝土桥梁的设计方法的研究还很少。

The modern synthesis bridged the gap between experimental geneticists and naturalists; and between both and palaeontologists, stating that

现代综合论在实验遗传学家和博物学家之间架起了桥梁，也在这两者与古生物学家之间架起了桥梁。

S elder statesman, he sees himself as the person to close the gap between young entrepreneurs and Japan's business Establishment.

作为日本企业的领军人物，他把他自己看成是一座桥梁，一座沟通日本年轻企业家与日本传统企业模式的桥梁。

SBG is the most powerful supplier in the fields of steel bridges and railway turnouts and has ever been leading any other companies in China.

公司的前身为始建于1894年的铁道部山海关桥梁工厂，是我国桥梁、道岔制造行业中综合实力最强的名牌企业。

For cable-stayed bridge by cantilever and segment construction, as a result of the effects of temperature difference, concrete shrinkage and creep during construction course, stress condition of structure is very complex.

对于悬臂分段现浇施工的斜拉桥，因其施工过程中受温度、混凝土收缩徐变的影响，结构受力复杂，为了保证桥梁在施工过程中的结构受力安全及成桥的线形与内力符合设计要求，必须对桥梁施工过程进行严格的控制。

During the period of construction by the cantilever erection construction method, bridge experiences not only the process of generating girder in the stage of T rigid frame, but also the process of system transformation, so bridge has experienced a great complex stress process, in order to ensure the security of bridge during the whole stage of construction, the stress control and geometry control must be made during the stage of construction of bridge.

近些年来，我国随着经济的快速增长，出现了建造大跨度桥梁的高潮，预应力混凝土技术的迅速推广应用以及建造预应力混凝土连续梁桥的各种先进施工方法应运而生，加快了桥梁的施工进度，使得预应力混凝土连续梁桥的跨越能力不断增大，悬臂拼装施工方法就是在这种背景下产生并发展起来的。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。