随着桥梁跨径的不断增大，悬索桥的颤振稳定问题日益突出。
The flutter stability of suspension bridge is becoming more and more important with increase of the span.
介绍了目前西部农村建造中小跨径桥梁常用的桥型结构及特点；
The paper introduces the structure of the medium and small spanning bridges which is often used in western countrysides, and its characteristics.
大跨径钢桥面铺装是桥梁建设中的难点。
Steel bridge pavement is the difficulty in construction of bridge.
钢桥面沥青混凝土铺装是大跨径桥梁建设的关键技术之一，备受世界各国工程界的高度重视。
Bitumen concrete pavement, a core technology in big-span bridge, is deemed highly important by engineering circle of every country in the world.
分析了中小跨径桥梁常用结构及设计中存在的问题，针对问题从规范标准、设计方法、常用结构特点、荷载标准确定等方面提出了建议。
The paper analyzed the problems of common structure and design for middle and small span bridge, proposed some advice from standards, design methods and common structure characteristics etc.
与预应力钢筋混凝土梁相比，其刚度较小，特别是在大跨径桥梁中，其挠度变形是影响其应用的重要控制因素。
Compared with prestressed rebar concrete beam, its stiffness is more little. Especially in the-big-span bridge, its deflection is a important control factor which influence its application.
本文依托广东崖门大桥桥面铺装为工程实践，对大跨径混凝土桥梁桥面铺装进行系统的研究。
Deck overlay of long span concrete bridge is studied systematically, based on engineering of deck overlay of Yamen bridge in Guangdong province in this dissertation.
扩建工程桥梁拼接方法是以同跨径、同桥型两侧拼接为主，局部分离为辅。
The bridge concatenation method of the extension project is to rely mainly on stepping the foot - path, with bridge type both sides concatenation, local separation.
因此有必要对大跨径桥梁施工控制技术进行更进一步的研究。
And it is necessary to do more research on the construction control technologies for the long-span prestressing concrete Bridges.
介绍了超大跨径缆索承重桥梁极限承载力分析的现状和发展趋势。
The status quo and development of the ultimate loads analysis for super long span cable supported Bridges is discussed in this paper.
“桥上桥”是大件运输中通过中小跨径桥梁的一种方法。
Appling temporary steel bridge is a method of passing bridge which span is not bigness in heavy-cargo transportation.
大跨径PC箱梁桥因为其具有截面抗扭刚度大、效率高等优点，被广泛应用于中等跨径的公路桥梁工程中。
Long span PC box girder Bridges have been widely used in middling span Bridges in highway engineering as they possess many merits, such as huge torsion stiffness, high section efficiency.
早期修建的小跨径钢桁梁悬索桥大部分已接近设计年限，正确评估其承载能力是桥梁维修、加固和技术改造的基本依据。
Most of Minisize span suspension Bridges with steel truss beam constructed in early age will approach its designed working life.
本文首先对大跨径桥梁施工控制技术的发展趋势、理论方法和工程实践等进行了简单的阐述，接下来研究了灰色系统理论在桥梁施工控制中的应用。
On the basis of this theory, this thesis focuses on the study of the application of the grey system theory to the construction control of long-span Bridges.
同时，简支板梁桥又是小跨径桥梁最常用的桥型之一，因此，移动车辆荷载引起的简支板梁桥动力效应越来越被工程技术界所关注。
So the dynamic response of the plate girder bridge under moving loads are the problem which is concerned about all along, and also a project to be studied deeply.
基于精英蚂蚁寻优策略，将大跨径桥梁的钢桥面板和铺装层作为桥面铺装系整体进行结构优化设计。
The optimum designs of long-span orthotropic steel bridge deck and its pavement system were studied based on super excellent ant colony optimization strategy.
在众多的中小跨径桥梁中，普通钢筋混凝土桥梁占据了一定优势并且有逐年递增的趋势。
In many medium and small span Bridges, reinforced concrete bridge occupied with certain advantages and there has been increasing trend.
广东地处我国南方丘陵地带，公路桥梁众多，随着高速公路的迅猛发展，中小跨径空心板桥应用广泛。
Guangdong is located in the hilly areas in southern China, many roads and Bridges, with the rapid development of highways, small and medium span slab bridge widely used.
随着大跨径桥梁结构在工程中应用日趋广泛，其施工控制问题也越来越受到工程界的重视。
Construction design and control problem of Jong-span bridge structures become more and more important in engineering with the Widely use of the structures.
大跨径桥梁能否顺利合拢，不留隐患的建成通车值得研究，因此施工控制误差风险性问题突出。
Smooth closure of length bridge structure, without leaving any hidden dangers worthy of study was opened to traffic, so the risk of construction control precision problems is highlight.
长距离跨河水准测量是特大跨径桥梁建设中高程控制的一项重要内容。
Long distance river-crossing leveling is an important job in the elevation control of the long-span bridge construction.
在简要回顾国内外关于桥梁两种主要风振-颤振及抖振控制研究的基础上，对大跨径桥梁的风振提出了控制措施。
In this paper, the achievements of study on wind-induced vibration, especially on flutter and buffeting, of long-span Bridges.
长距离跨河水准测量是特大跨径桥梁建设中高程控制的一项重要内容。
With the rapid development of Chinas traffic, more and more long-span bridges are needed to be constructed.
沉降差在桥梁中产生的动力放大系数随着跨径增大而减小。
The dynamic amplification factor caused by the settlement was much bigger in a short span beam than that in a long span one.
大跨径连续刚构桥梁施工，通常采用挂篮悬臂现浇对称施工法。
In the long-span continuous rigid frame bridge construction process, usually use hanging basket-situ cantilever construction method of symmetry.
近年来，高墩大跨径连续刚构桥在深水库区的桥梁中逐渐得到应用。
In recent years, continuous rigid frame Bridges with long span and high piers are gradually applied in deep reservoir areas.
还评述了大跨径桥梁的车道荷载拟定原则，探讨了大跨径桥梁的车道荷载和多车道横向折减。
Byintroducing the principles of initiating a lane loading in long span Bridges with comments, the appropriate lane loading as well as multi-lane transverse reduction factors are suggested.
运营中的大跨径预应力混凝土梁桥箱梁普遍开裂，严重影响了桥梁结构的安全性和耐久性，造成了桥梁过早的失效和破坏。
The long-span prestressed concrete beam bridge is likely to craze in operation, which decreases the bridge's safety and durability and then leads to its structure's early failure and destruction.
预应力混凝土连续箱梁的悬臂施工作为大跨径桥梁的主要建设方式日渐成熟，但此类桥梁设计、施工中仍然存在着某些关键问题其处理方式比较含糊。
Now cantilever construction of prestressed concrete continuous box girder as the chief construct methord in engineering has gone intio the rang of mature.
预应力混凝土连续箱梁的悬臂施工作为大跨径桥梁的主要建设方式日渐成熟，但此类桥梁设计、施工中仍然存在着某些关键问题其处理方式比较含糊。
Now cantilever construction of prestressed concrete continuous box girder as the chief construct methord in engineering has gone intio the rang of mature.
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