When girder bridge is widened, a combined bridge is formed consisting of both new and old girders.
梁桥经过拓宽改建，形成了新、老梁体拼接的组合桥。
By test, we will know more about prestressed concrete semi-rigid frame continuous box girder bridge.
通过试验，使我们对于预应力混凝土半刚构-连续梁桥有了进一步的认识。
According to the above reasons, two kinds of methods are adopted to optimize the box-main-girder bridge.
基于以上原因，本文采用了两种方法对箱形梁桥架进行优化设计。
Otherwise, in using the continuous girder bridge we can find that the craze of the box-beam is very popular.
另外，在预应力连续桥梁的使用过程中，发现箱梁开裂的现象相当严重。
Single girder bridge is only one track, so only to find a point at both ends of each elevation can be the same.
单主梁桥架上只有一个轨道，所以只找出两端各一点的标高相同即可。
With its excellent section characters, the prestressed concrete box beam plays a main role in the girder bridge.
预应力混凝土箱梁以其优良的截面性质在梁桥中占据了主要地位。
The mechanical properties of a skew girder bridge differ a great deal from those of an orthogonal girder bridge.
斜梁桥的力学特点与正交梁桥相比有很大区别。
Based on simple vehicle model and simple continuous girder bridge model the vehicle-bridge interaction model is make.
参照简化的车辆模型和桥梁模型，建立了车-桥相互作用的数学模型。
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。
Bridge's metal structure from the main beam and side beams, divided into single-and dual-beam bridge girder bridge types.
桥架的金属结构由主梁和端梁组成，分为单主梁桥架和双梁桥架两类。
Paper researches and analyses the stability performances of curved girder bridge under vertical load and temperature load.
论文将就竖向荷载与温度荷载作用下，该类曲线梁桥的稳定性能进行研究分析。
This paper deeply studies the problem of transverse stiffness of skew girder bridge which has been argued for a long time.
对工程界有争议的斜梁桥横向刚度问题进行了较深入的研究。
In addition, this paper analyses the possibility that the curved girder bridge might adopt all single support structure system.
另外，本文还对曲线箱梁桥是否可以采用全单点支承形式进行探索。
In this paper, prestressed concrete continuous girder bridge is studied by using finite element analysis tool with support project.
本文以预应力混凝土连续梁桥为研究对象，采用有限元分析手段结合依托工程进行研究。
The results show that the entire bridge model should be used in transverse seismic analysis for the simply supported girder bridge.
研究表明：对于简支梁桥的横向抗震计算，应该采用全桥模型计算；
Described hereby are the overall design of the small radius curved girder bridge and its mechanic features and major causes for accidents.
阐述了小半径曲线梁桥的总体设计、力学特征和产生事故的主要原因。
The temperature field in box girder bridge will change constantly because of the effects of sunshine and atmospheric temperature difference.
主桥箱梁内部温度场由于受到气温、日照等因素变化的影响而不断发生变化。
On the basis of the mechanical behavior of box girders, the stress design method is brought forward against the PC box girder bridge cracking.
根据箱梁结构的受力特点，提出采用应力设计方法解决预应力混凝土箱梁的受力开裂问题。
There are still many issues to be resolved on curved girder bridge, one of them is loss of prestress which is much more typical and outstanding.
曲线梁桥还是有很多问题有待解决，预应力的损失就是其中较为典型和突出的问题。
The long-term deflection of Long Span Prestressed Concrete Box-girder Bridge(LSPCBB) is getting more and more serious in terms of structure safety.
最后，对桥梁设计计算、桥梁混凝土施工及箱梁下挠的防治技术进行论述，并对开展控制结构长期下挠的研究提出了建议。
Lastly design of P. C. continuous curved girder bridge is discussed in the paper, in especial prestress reinforcing steel bar's loss and bearing design.
最后介绍了预应力混凝土连续曲线箱梁桥的设计，重点讨论了总体设计，钢束预应力的损失的计算，预设支座偏心调整扭矩等设计中的关键问题。
It is the wide application of P. C. continuous curved box-girder bridge which has become an important bridge style in the transportation infrastructure.
预应力混凝土连续曲线箱梁桥应用日益广泛，已经成为现代交通基础设施的重要桥型。
On the basis of fuzzy failure criterion, model of reliability of concrete box-girder bridge is set up, and the reliability of existing bridge is calculated.
基于模糊失效准则建立了混凝土箱梁桥的可靠度计算模型，并计算了一座实桥基于模糊失效准则的可靠度。
This paper explained the construction technology of the bearing replacement for quasi-continuous T-girder bridge and analyzed the causes of bearing disease.
本文着重介绍准连续T型梁桥支座替换工程施工技术，并分析支座病害原因。
Uncertain factors in construction of continuous girder bridge such as side span joint scheme and different balanced cantilever construction speed are analyzed.
对施工中的不确定因素，诸如边跨合拢方案和不同桥墩悬浇进度不一致等进行了分析比较。
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.
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。
Single-girder bridge by a single main beam and in the end beam span both sides of the composition, dual-beam bridge consists of two main beams and side beams formed.
单主梁桥架由单根主梁和位于跨度两边的端梁组成，双梁桥架由两根主梁和端梁组成。
Single-girder bridge by a single main beam and in the end beam span both sides of the composition, dual-beam bridge consists of two main beams and side beams formed.
单主梁桥架由单根主梁和位于跨度两边的端梁组成，双梁桥架由两根主梁和端梁组成。
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