隨時(shí)間變化的鋼筋混凝土阻力分析外文翻譯-資料下載頁
2025-06-18 02:49本頁面
【正文】 r time, reinforced concrete structural geometry and material material resistance to the standard value.Mean and standard deviation of equation (8), respectively, be expressed as follows: In the specific construction applications, the resistance of concrete structures decreasing function of random process in the following formula:Where is the resistance of the random process of concrete structures, is related random variables, and is a function of change over design of concrete structures based on rank, equation (11) can be determined using the following formula: Where when the reinforced concrete to reach the limits of the average resistance of concrete。 When the reinforced concrete resistance to limit the average。 Reinforced concrete in the standard deviation coefficient of concrete。 Reinforced concrete are the standard deviation coefficient。, Respectively, decreased resistance of concrete and steel factor。, related to the structure of the material, the experiment can be obtained from the material。4 ApplicationAxial pression tests of reinforced concrete structural members, resulting in some structural resistance statistics.Consider the initial value:C30 concrete in the mean, standard deviation。 20MnSi reinforcement, the average deviation of standard deviation。 the size of the initial phase of concrete and steel, respectively, from the reduction factor to Ref [4] obtained..Under these conditions, the axial pression of the reinforced concrete structure can be related to resistance to derive random time.According to the design of reinforced concrete structure theory, the resistance function, where and are the initial resistance of concrete and , the paper proposed to use the theory to calculate the random timedependent resistance.Some statistics, see Table the results can clearly see that the resistance of reinforced concrete with time significantly phenomenon is important, and in checking on the safety of reinforced concrete can not be ignored.Table 1, the axial pression of the reinforced concrete structural resistance to change over timeTime / year 01,020,304,050Average / kN Standard deviation / kN coefficient of variation 5 Conclusion For civil engineering research, design, construction, characteristic of reinforced concrete structures is very change over time of reinforced concrete for structural testing, reinforced concrete structure maintenance, safety assessment is the design of structural reliability, any real resistance to change over time should be the paper for the material characteristics of reinforced concrete research, in which the factors affecting concrete carbonation of concrete, steel change over time the resistance of reinforced concrete structures, reinforced concrete impact of other factors and the proposed analytical method is.11 / 11
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