对大跨度桥梁施工控制具有一定的参考价值。
It has certainly reference value for the construction control of the great span bridge.
往往是不可行的建构中间大跨度桥梁桥墩手段。
Often it is not feasible to construct long span Bridges by means of intermediate piers.
尤其适用于大跨度桥梁构件及断面复杂的混凝土构件脱模。
Particularly suitable for large span bridge structures and cross-section complicated concrete component demoulding.
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。
Simulation of stochastic wind velocity field is prerequisite to flutter or buffeting analysis of long-span bridges in time-domain.
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。
Identification of flutter derivatives is an attractive topic in the field of wind-resistance study of long-span Bridges.
大跨度桥梁频域及时域抖振分析中通常仅考虑主梁的脉动风效应。
Only wind action of deck is generally taken into account in frequency-domain and time-domain buffeting response analysis for long-span bridge.
SWRS82B热轧盘条是制造大跨度桥梁缆索用镀锌钢丝的原材料。
SWRS82B wire was the raw material of hot-dip strand for long-span bridges.
大跨度桥梁采用低松弛镀锌PC钢绞线具有施工简便、造价低等优点。
Its profits are convenient construction and low cost that the wide span bridge is built by the low relaxation prestressed galvanized PC steel strand.
因此，抗风问题已成为决定建造大跨度桥梁成功与否的关键问题之一。
Therefore, the wind has become the key issues to decide whether the long-span bridges is successful or not.
摘要水上大跨度桥梁钢箱梁吊装工程风险大、对安全控制管理要求较高。
Abstract: the steel box beam lifting on wide water surface faces a lot of risk factors and thereby has a higher safety control requirement.
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。
In northern region, especially for long span Bridges, its benefits could be obvious.
针对高速公路综合管理需求，研究强风天气的大跨度桥梁行车安全性问题。
Side wind effects on driving safety were investigated for long-span Bridges in strong wind based on comprehensive management of freeway.
大跨度桥梁通常是交通运输系统的枢纽工程，是生命线工程的重要组成部分。
It is well know, in general, that the long - span bridge is the hinge of transportation system and the important component of lifeline project.
爆破震动引起的大跨度桥梁地下结构的振动效应是影响桥梁安全的重要因素。
The underground structure vibration effects of long-span bridge caused by blasting vibration are important factors to affect the safety of bridge.
文摘：以日本明石海峡大桥为例，综述了大跨度桥梁建设的技术基础与进步。
Abstract: This paper sums up technical foundation and advancement of large-span bridge construction with an example of the large bridge over Akashi Channel in Japan.
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。
Vortex-induced vibration of the bridge is an important aeroelastic phenomena, it is easy for long-span bridges to occur Vortex-induced vibration.
提出一种通用有限元程序和数学软件相结合的大跨度桥梁有限元模型修正方法。
A modification method based on the combined universal finite element program and mathematic software for finite element model of long span bridge is proposed.
悬索桥，由于其跨越能力大、抗震性能好，越来越成为大跨度桥梁的首选桥型。
Suspension bridge, because of its strong spanning capacity and high seismic performance, are becoming the first choice in long-span Bridges.
本文首先回顾了大跨度桥梁颤振分析的基本方法和气动导数识别方法的研究现状。
The fundamental methods for flutter analysis and the current status of aerodynamic derivative identification are reviewed at first in this thesis.
将谐波合成法与修正的谱描述法结合用于大跨度桥梁主梁及桥塔上的随机风场模拟。
A combination of the wave superposition method and the modified spectral representation method is applied to a wind field simulation for whole bridge including the deck and the towers.
但有一点是肯定的，对大跨度桥梁进行抗震设计时，应该考虑多维多点激励的影响。
But it is no doubt that the effect of the multi-support excitation should be considered in respect of the seismic design of the long span suspension Bridges.
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。
As widespread construction of long-span Bridges and extensive application of efficient construction materials, the problems of bridge structure vibration have become increasingly prominent.
长期以来，桥梁断面颤振导数的识别都是大跨度桥梁颤抖振响应分析中的重点和难点问题。
The identification of flutter derivatives for bridge sectional model has long been a key issue in long-span bridge flutter and buffeting analysis.
目的利用灰色层次分析法合理评估大跨度桥梁施工过程中的多种风险和确定最优施工方案。
Risk assessment is made in the paper for long span bridge construction and the best construction document by "AHP-GRAY" is determined.
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。
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.
另外，在强静风荷载作用下，大跨度桥梁的几何非线性、静风荷载非线性的影响均不容忽视。
In addition, the effects of geometric nonlinearity and the static wind load nonlinearity of long-span Bridges under strong wind load shouldn't be neglected.
提出采用准定常气动刚度与基于试验的非定常气动阻尼进行气动修正的大跨度桥梁抖振计算新模型。
Put forward a new method for long-span bridge buffeting analysis which using quasi-steady aerodynamic stiffness and unsteady aerodynamic damping based directly on wind tunnel test.
扁平钢箱梁具有新颖的结构特点和优良的受力性能，已成为现代大跨度桥梁加劲梁的主要结构形式。
With innovative structural characteristics and fine mechanical behavior, flat steel box girder is now the main structural style of large span bridges girders.
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。
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。
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.
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