应用微平面理论分析混凝土保护层的破坏模式。
The failure modes of concrete covers were analyzed by use of the micro-plane theory.
同时钢筋直径对钢筋锈胀力的影响程度要大于混凝土保护层厚度的影响。
The influence of abr diameter is stronger than the thickness of concrete protective covering layer.
结果表明，混凝土保护层厚度是决定混凝土工业厂房耐久性至关重要的因素。
The result shows that cover thickness is the key factor which determines the durability of industrial concrete mill buildings.
混凝土保护层孔隙水饱和度是混凝土结构钢筋腐蚀寿命预测模型的关键参数。
Correlation between relative humidity and degree of capillary saturation derived in the laboratory is not suitable to the service life prediction.
依混凝土保护层碳化失效概率，提出了既有混凝土桥梁耐久性预测的一种简便方法。
According to the failure probability on carbonization of the concrete cover, a simple method of durability prediction is proposed for the existing concrete Bridges.
本文研究了混凝土保护层的结构与渗透性，以及混凝土保护层渗透性的现场检测方法。
The structure and permeability of cover concrete, as well as the in-situ test method for testing the permeability of cover concrete are researched.
钢筋腐蚀将导致钢筋体积大大增加，混凝土保护层开裂、剥落，结构承载力下降，甚至倒塌。
The sensor construction is that one Bragg grating is stuck on the inner center of two bars against each other, and the reinforcement volume as well as the diameter will expand due to corrosion.
钢筋的防腐取决于的钢筋密度，质量和混凝土保护层的厚度(见4.4)以及裂缝(见7.3)。
Corrosion protection of steel reinforcement depends on density, quality and thickness of concrete cover (see 4.4) and cracking (see 7.3).
研究了混凝土保护层胀裂时及胀裂前锈蚀对无横向约束光圆钢筋混凝土试件粘结性能的影响机理。
The effect of corrosion on the bond between concrete and plain bar reinforcement without stirrups is studied during cover cracking and before cover cracking.
经现场结构检测与环境分析，发现混凝土保护层的施工质量及偏差是引起目前钢筋腐蚀的主要原因。
According to field structural testing and environmental analysis, the main factor, which causes reinforcement corrosion, is due to construction quality of concrete protection layer.
开展了某工业厂房栈桥柱的耐久性现场检测工作，对实测的混凝土保护层厚度和碳化深度进行了分析；
Later on, the on-site concrete durability test of the trestlework in the workshop building is taken as one example to analyze the concrete cover and the dept of its carbonization.
本文通过22根钢筋混凝土受弯构件的试验，探讨了混凝土保护层厚度对裂缝间距和裂缝宽度的影响。
In this paper, according to the experimental results of 22 beams, we probe into the influence of concrete cover thickness on crack width and crack spacing.
钢筋腐蚀是造成水运工程钢筋混凝土破损的主要原因之一，混凝土保护层是保证钢筋延迟开始腐蚀的重要屏障。
Corrosion of reinforcement is one of the main causes of damage of reinforced concrete of maritime works, and protective cover is an important mean for deferring corrosion of reinforcement.
通过对三块钢筋锈蚀槽板的荷载试验结果的分析，探讨了钢筋锈蚀和混凝土保护层脱落后的槽板承载力及破坏形态。
By analysis on testing for three trough-form slabs with corroded steel bar, bearing capacity and destroying status of trough-form slabs were approached.
推导出了一般环境、酸性、碱性和盐环境下适用的GF R P筋混凝土保护层厚度计算公式和最小锚固长度计算公式。
Formulas for critical thickness of cover and minimal anchorage length of GFRP bars under ordinary and erosive environment were developed.
提出了确定混凝土保护层厚度的三种可靠度方法，着重研究了以承载能力可靠度的降低为控制条件的混凝土保护层厚度确定问题。
In this paper, three approaches are presented for determining concrete cover depth of reinforced concrete structures, with emphasis on ultimate limit state reliability based approach.
根据有限元分析的结果，对混凝土保护层锈蚀胀裂破坏的弹性力学模型进行修正，建立了混凝土保护层锈蚀胀裂时钢筋锈蚀量的计算模型。
According the result of ANSYS analysis, a new model based elasticity mechanics is developed for calculating the corrosion loss that need for concrete cover cracking.
分析了影响混凝土保护层胀裂时钢筋锈蚀深度的各个因素，包括混凝土水泥石毛细孔的体积、混凝土保护层的厚度、钢筋直径和铁锈膨胀率。
The factors influencing the corrosion depth including the porous volume of concrete, thickness of concrete cover, diameter of rebar and the corrosion expansion rate are analyzed.
规定了混凝土结构耐久性设计的原则、内容、结构构造和材料选用基本要求、混凝土保护层厚度设计值、裂缝宽度限值等，并给出了防腐蚀附加措施及试验方法。
The regulation specifies the principles, contents, detailing and material requirements, design value of concrete cover depth, crack width limiting, additional anti-corrosion measures and test methods.
在回归分析和实验室加速碳化试验的基础上，给出了干旱地区桥梁混凝土强度和保护层厚度的合理取值。
The reasonable depth of concrete cover and concrete strength of railway bridges suitable for arid regions is given through regressive analysis.
黑锌板包裹了整个上层空间，形成金属保护层，而在悬臂之下是预制混凝土翼墙。
Black zinc wraps over the upper level providing a protective metal clad enclosure perched on, and cantilevering beyond, the precast concrete wing walls below.
分析了表面氯离子浓度、保护层厚度对耐久混凝土配合比的影响。
The influence of chloride concentration at concrete surface, depth of the concrete cover on mixture was analyzed.
认识保护层的主要作用，对提高水运工程混凝土结构使用寿命具有重要意义。
It is of great significance to recognize the main functions of protective cover for prolonging the service life of maritime concrete structures.
从混凝土碳化深度、保护层厚度和钢筋锈蚀三方面调查研究了重庆地区混凝土结构耐久性的现状。
The durability status of concrete structures in Chongqing is discussed based on the analysis of the depth of concrete carbonization and the thickness of concrete cover and reinforcement corrosion.
为了对钢筋混凝土结构的耐久性全寿命进行评估，研究了保护层混凝土锈胀裂缝的扩展及过程。
To evaluate the full-span durability life of reinforced concrete structure, the expanding process of corrosive crack in protective layer concrete is studied in this paper.
基于武汉长江隧道工程项目，研究应用高抗渗纤维混凝土作隧道管片外保护层。
Based on the Wuhan Yangtse River tunnel project, the low-penetration fiber concrete as the protecting layer of Wuhan Yangtse River tunnel tube was studied.
混凝土构件钢筋保护层的检验是检验批验收的一项主要内容。
The inspection of steel bar protection layer in concrete components, however, is one of the main steps of inspection lot acceptance.
计算结果表明，作用在钢管混凝土柱上的荷载对其耐火极限及防火保护层厚度影响很大。
The calculating results illustrate that the load acting on a concrete-filled steel tubular column has a great influence on the fire resistance time and fire protection thickness.
调查表明，原设计混凝土标号过低，保护层过薄，桥面排水不当，加速了劣化过程。
The deterioration is accelerated because the strength grade of concrete is too low, depth of cover too thin, and drain off water unsuitable.
调查表明，原设计混凝土标号过低，保护层过薄，桥面排水不当，加速了劣化过程。
The deterioration is accelerated because the strength grade of concrete is too low, depth of cover too thin, and drain off water unsuitable.
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