本文選題：再生混凝土梁　切入點：時變撓度　出處：《工程力學》2017年04期

【摘要】：重點考慮收縮和徐變等因素,對再生混凝土梁的時變撓度進行了理論分析。假定收縮和徐變不會相互影響,通過截面時隨分析,得到再生混凝土梁時變相對受壓區(qū)高度表達式。依據(jù)現(xiàn)有文獻的試驗數(shù)據(jù),對分析結果準確性進行了驗證。結果表明:對于不同的再生粗骨料取代率,時變撓度的計算結果與試驗結果相比,大多數(shù)誤差可控制在19%以內(nèi)。該文的工作較好揭示了再生混凝土梁時變撓度的演化特點,可以為今后再生混凝土梁的長期撓度預測提供理論基礎。
[Abstract]:Considering the factors of shrinkage and creep, the time-varying deflection of recycled concrete beam is analyzed theoretically.Assuming that shrinkage and creep do not interact with each other, the time-varying relative compressive zone height expression of recycled concrete beams is obtained through cross-section time-dependent analysis.The accuracy of the analysis results is verified according to the experimental data of the existing literature.The results show that the calculated results of time-varying deflection can be controlled within 19% of the experimental results for different replacement rates of recycled coarse aggregate.The work in this paper reveals the evolution characteristics of the time-varying deflection of recycled concrete beams and can provide a theoretical basis for the prediction of long-term deflection of recycled concrete beams in the future.
【作者單位】： 同濟大學建筑工程系;
【基金】：國家杰出青年科學基金項目(51325802)
【分類號】：TU375.1

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本文編號：1706427