因此可作为一般混凝土徐变问题的中值系数值。
Therefore, these values can be used for general creep problems of concrete.
然而，混凝土的徐变及其对桥梁结构性能影响的预计和控制，是十分复杂又难以获得精确答案的问题。
However, creep of concrete and its influence on bridge structures are hard to predict and control. The calculation is very complicated and the results are not accurate.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, concrete's shrink and creep is distinct.
再次，讨论了预应力、混凝土徐变、箱梁抗弯刚度等对桥梁结构下挠的影响。
Thirdly, pretressing, concrete creep and bending rigidity of box girder are studied to discuss their impacts on the deformation of girder.
不同加载龄期混凝土的徐变规律。
混凝土实测应变包含弹性应变、徐变应变及混凝土自由变形、温度应变等非应力应变。
The measured strain of concrete includes the elastic strain, creep strain and also the non-stress strain like the concrete free deformation and temperature strain.
研究目的：混凝土的徐变对预应力混凝土结构的影响不容忽视。
Research purposes: Creep of concrete has significant influence for prestressed concrete structures.
应用退化梁单元分析了混凝土结构的徐变问题。
The creep of concrete structures is studied using degenerated beam element.
收缩和徐变是混凝土作为粘弹性材料的一种固有的时变特性。
Shrinkage and creep are the inherent time-dependent characters of concrete which belongs to a viscoelastic material.
本文还针对预应力混凝土连续刚构桥和斜拉桥，分析计算了其在施工和运营阶段，混凝士徐变对桥梁结构的影响。
The influence of concrete creep on bridge structure under the construction and operation stage for prestressed concrete continuous rigid frame bridge and cable-stayed bridge is also analyzed.
拱度和混凝土的收缩、徐变的影响比较明显。
The effect of arch degree, creep and shrink of concrete is very distinct.
混合结构的一个突出问题是混凝土有徐变收缩的性质，而钢无此性质。
A noticeable problem of this structure system is that concrete has the characteristics of creep and shrinkage while steel hasn't.
混凝土内部应力测量关键在于应力应变转换，而应力应变转换关键在于徐变系数的识别。
The key to concrete stress measure is the translation from strain to stress. And the transition 's key is the identification of creep factor.
如何基于ANSYS软件平台进行考虑温度影响效应的混凝土结构早期温度徐变应力场的计算。
How to calculate thermal creep stress filed of early-age concrete considering temperature effect by ANSYS software.
试验研究了水泥用量、矿物掺合料、龄期对高性能混凝土收缩、徐变的影响规律。
The laws of influences from usage amount of cement, mineral admixtures and concrete age on shrinkage and creep of high performance concrete are studied through tests.
它将有助于读者对混凝土徐变和收缩次内力计算原理的理解。
It may help the readers to understand the computational principle of secondary internal forces due to the creep and shrinkage of concrete.
混凝土的收缩徐变和车辆超载是大跨度连续梁桥主梁下挠严重的主要因素之一。
The creep is the main reasons why the deflection of the girder is larger than that of code.
提出了钢与混凝土简支组合梁的徐变效应简化分析方法，建立了粘弹性分析的数学模型。
A simplified method for analysis of creep effects in steel-concrete simply supported composite beams is presented. The mathematical models of viscoelastic analysis are created.
混凝土的收缩和徐变较不引气混凝土相比较小；耐久性能明显改善。
The air entraining concrete's shrinkage and creep were less than concrete which not content air entrained agent, and the durability performance was improved obviously.
研究表明，早龄期混凝土致裂应力主要与徐变和内外约束有关。
The results showed that the concrete cracking stress at the early age was associated with the creep and internal and external constraints directly.
混凝土徐变收缩分析是桥梁结构分析中的基本问题，已有多种较成熟的计算方法。
The analysis for concrete creep and shrinkage is a common problem in the bridge structural analysis, and there are many popular methods available now.
计算中考虑了温度荷载、自重、静水压力、混凝土徐变和自生体积变形等情况。
In the computation of stress field, the factors, such as temperature load, deadweight of concrete, water potential, creep stress and self expansion of concrete, are involved in the program.
正长岩骨料的混凝土徐变大于玄武岩骨料的混凝土徐变。
The creep of basalt aggregate concrete is smaller than that of syenite aggregate concrete.
研究表明：粉煤灰通过改变胶凝材料体系水化速度、徐变系数、弹性模量，可以有效抑制早期混凝土的自收缩。
The research shows that fly ash could restrain early autogenous shrinkage by changing the parameter of binder, such as hydrated velocity, creep coefficient, elastic modulus and so on.
当核心混凝土产生徐变时，会出现内力重分布现象，使钢管和混凝土的模量发生变化。
The internal force redistribution will emerge as the core concrete creates creep, which can make the modulus of steel tube and concrete change.
利用该程序分析混凝土收缩徐变对结构变形和内力的影响。
Structure deflection and inner force are analyzed by using the program for concrete shrinkage and creep.
利用该程序分析混凝土收缩徐变对结构变形和内力的影响。
Structure deflection and inner force are analyzed by using the program for concrete shrinkage and creep.
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