不同加载龄期混凝土的徐变规律。
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
论文探讨了用有效模量法分析徐变效应、用裂缝单元模拟裂缝的方法。
The paper introduces the usage of analysis of concrete creep by effective modulus method thesis and modeling of crack by crack element.
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.
研究钢管混凝土在轴向载荷下的徐变特性涉及两方面：徐变函数和计算方法。
Two aspects of properties are related to creep of concrete filled with steel tube(CFT) under axial load:creep function and computational method.
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.
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.
文中第一部分分别导出了预应力混凝土板在弹性理论和徐变理论中的变分原理。
In the first part of the paper, variation principles in the elastic and creep theory for prestressed concrete plates are derived respectively.
混凝土的徐变包括低应力水平下的近似线性徐变和高应力水平下的非线性徐变。
Creep of concrete consists of approximate linear creep at the level of low stress and nonlinear creep at the level of high stress.
混凝土的徐变和收缩是长期荷载作用下混凝土结构裂缝宽度扩大的主要影响因素。
The creep and shrinkage of concrete is the major problem that leads to the enlargement of crack width in concrete structures, under the action of long-term load.
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.
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.
CFRP约束或表面涂胶的混凝土柱的外形、尺寸及体表比对其徐变的影响很小。
Furthermore, the physical apperence and dimension have litter effect on the creep behavior of CFRP-confined and epoxy-coated concrete columns.
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.
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.
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.
当荷载被移走时，应变的弹性部分恢复，但塑性应变部分(滑移和徐变)却会永久呆留。
When the load is removed, the elastic portion of the strain is recovered, but the plastic part (slip and creep) remains as permanent set.
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.
文中还讨论了考虑湿化影响的有限元计算方法，并进行了土石坝沥青混凝土心墙的徐变分析。
In the paper, the finite element method regarding the effects of wetting and creep analysis of asphalt concrete core are studied.
对不同养护温度下的混凝土徐变进行了研究，用化学反应速率描述温度对混凝土徐变的影响。
A study was made on concrete creep under different curing temperatures, and the comprehensive effects of time and temperature on creep development were expressed with the chemical reaction rate.
对不同养护温度下的混凝土徐变进行了研究，用化学反应速率描述温度对混凝土徐变的影响。
A study was made on concrete creep under different curing temperatures, and the comprehensive effects of time and temperature on creep development were expressed with the chemical reaction rate.
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