In northern region, especially for long span Bridges, its benefits could be obvious.
在北方地区河道中修建大跨度桥梁时，采用此方案，可能产生有利的效果。
Often it is not feasible to construct long span Bridges by means of intermediate piers.
往往是不可行的建构中间大跨度桥梁桥墩手段。
The presentations in the paper provide helpful reference for the design of long span bridges for high speed railways.
为高速铁路大跨结构的设计提供有益的参考。
The quality problems existing in the construction of long span bridges are analyzed on the basis of a lot of engineering examples.
通过大量的工程实例，对大型桥梁工程建设中所存在的质量问题进行了分析。
This paper proposes a new direct flutter analysis of long span Bridges, based on the full order discretized physical model of structure.
基于结构的有限元全物理模型，提出了用于分析大跨度桥梁耦合颤振新的直接分析方法。将系统的气动运动控制方程转化成广义特征值问题。
The direct flutter analysis only requires a single parameter searching process and is efficient and fits to the flutter problems of actual long span Bridges.
由于只需进行单参数的搜索过程且计算效率较高，用该方法分析实际大跨度桥梁颤振问题是合适的。
Based on a full discretized model of structure, a new full order method for analyzing coupled flutter problems of long span Bridges is proposed in this paper.
基于结构的有限元全物理模型，提出了用于分析大跨度桥梁耦合颤振问题的全阶分析方法。
As long span Bridges are constantly emerging, the speed and load of vehicles are increasing, Coupled vibration of vehicle-bridge problems become more prominent.
随着高墩大跨桥梁不断涌现，车辆速度和载重量不断增大，车桥耦合振动问题愈加突出。
Based on random rail roughness and vehicle-bridge coupling element, a method is proposed for calculating random vibration of long span Bridges under moving vehicles in this paper.
基于随机轨道粗糙度和车桥偶合单元，提出了大跨桥梁移动车辆荷载作用下随机振动的计算模式。
Especially for high-rise buildings, super high-rise buildings, tower structures and long span Bridges and structures, wind load often ACTS as the control one in all kinds of loads.
尤其是对于高层、超高层结构、高耸结构以及大跨度桥梁和建筑结构，风荷载往往是起控制作用的荷载。
Therefore, it is necessary to study and master the seismic response of long span bridges in order to establish reasonable seismic design system and take effective anti-seismic measures.
因此，研究掌握大跨桥梁的地震反应是建立合理抗震体系和采取有效抗震措施的科学依据。
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.
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。
The preflex composite girder is a new girder type that has been successfully used in small span bridges in China in the recent years, and is currently starting to be used in long span bridges.
预弯组合梁是近年在国内采用的新梁型，已经在许多小跨度桥上成功应用，在大跨度桥上也开始付诸实践。
The model and equations used for measuring the seismic effects of traveling wave onto long span bridges are derived and established, during the course of which the large mass method is utilized.
运用大质量法，建立并推导了长大跨度桥梁考虑行波效应的分析模型及解析方程。
As widespread construction of long-span Bridges and extensive application of efficient construction materials, the problems of bridge structure vibration have become increasingly prominent.
大跨度桥梁的大量兴建和高效能建桥材料的广泛应用，桥梁结构的振动问题日趋突出。
SWRS82B wire was the raw material of hot-dip strand for long-span bridges.
SWRS82B热轧盘条是制造大跨度桥梁缆索用镀锌钢丝的原材料。
Eccentric loadings will induce large torsional deformations for the girders of long-span Bridges, deteriorating the safety and comfort of moving vehicles of rail transit.
偏载作用下大跨度桥梁主梁易产生较大的扭转变形，这对轨道交通车辆运行的安全性和舒适性是不利的。
On the basis of error analysis of finite element modeling, the multi-level model updating is put forward for long-span Bridges.
在有限元模型误差来源分析的基础上，提出了大跨桥梁结构模型误差的分层次修正方法。
Because of their long span ability and light beautiful structures, suspension Bridges are competitive bridge types of long-span Bridges.
因其跨越能力大、结构轻型美观，所以是特大跨度桥梁中非常有竞争力的桥型。
Wind Loads nonlinear static instability theory, derived for calculating the nonlinear stiffness matrix, and the development of long-span Bridges in the nonlinear static.
风荷载作用下的非线性静力失稳理论，推导了适合计算的非线性刚度矩阵，并开发了大跨度桥梁的非线性静力。
Flutter stability is one of major factors governing the design of long span suspension Bridges.
颤振稳定性已成为影响和控制大跨径悬索桥设计的一个重要问题。
Vortex-induced vibration of the bridge is an important aeroelastic phenomena, it is easy for long-span bridges to occur Vortex-induced vibration.
桥梁涡激振动是大跨度桥梁在低风速下很容易出现的一种重要的气动弹性现象。
Flutter derivatives play very important roles for determining the flutter critical wind speed and buffeting responses of long-span Bridges.
气动导数是大跨桥梁结构颤振和抖振分析中确定颤振临界风速和抖振响应的重要依据。
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.
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。
Identification of flutter derivatives is an attractive topic in the field of wind-resistance study of long-span Bridges.
气动导数识别是大跨度桥梁抗风研究中备受关注的一个问题。
Having merits of large spanning ability, light weight and aesthetical structure, suspension Bridges are the first choice for ultra-long-span Bridges.
由于具有跨越能力大、结构轻型美观的优点，悬索桥已成为特大跨度桥梁的首选桥型。
A method of seismic response analysis for long-span Bridges considering the synthetic effects of wave-traveling, topography and multi-support excitations is established.
提出一种综合考虑行波和地形影响的大跨结构在多点输入下的地震响应分析方法。
Cantilever bridge piers in the use of long-span Bridges the middle it is usually not feasible in the bridge structure.
悬臂桥在利用中间桥墩的长跨距桥中它通常是不可行的桥梁结构。
With the rapid development of Chinas traffic, more and more long-span bridges are needed to be constructed.
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。
Simulation of stochastic wind velocity field is prerequisite to flutter or buffeting analysis of long-span bridges in time-domain.
随机脉动风场的模拟是大跨度桥梁颤抖振时域分析的前提。
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