【摘要】：隨著我國城市化高速進展，建筑垃圾的處理以及建筑原材料匱乏已經(jīng)成為當(dāng)前影響國計民生的重要問題。而再生混凝土及其結(jié)構(gòu)的適時提出一方面消化了大量建筑垃圾同時解決了建筑原材料短缺的問題，是真正的環(huán)境友好型建筑材料。但目前再生混凝土及其結(jié)構(gòu)的設(shè)計方法還不完善，尤其是再生混凝土基本構(gòu)件可靠度分析等問題亟待解決，使得再生混凝土技術(shù)無法在實際工程中廣泛推廣。本文在收集國內(nèi)相關(guān)研究成果結(jié)合本課題組試驗資料的基礎(chǔ)上，對再生混凝土梁正截面受彎承載力極限狀態(tài)和正常使用極限狀態(tài)最大裂縫寬度、撓度計算方法進行了系統(tǒng)分析，并提出了相關(guān)計算公式，進而采用驗算點法（JC法），對其承載力、正常使用極限狀態(tài)可靠度進行重點分析，提出了可靠性評價與建議。論文主要工作如下： （1）統(tǒng)計和分析包含本課題組完成的再生混凝土梁受彎試驗數(shù)據(jù)，修正《混凝土結(jié)構(gòu)設(shè)計規(guī)范》(GB50010-2010)中梁正截面受彎承載力和正常使用階段最大裂縫寬度、撓度計算公式，確定了再生混凝土梁相關(guān)建議公式。 （2）在本文建議公式的基礎(chǔ)上，，分析再生混凝土梁正截面受彎承載力極限狀態(tài)可靠度，研究不同參數(shù)對可靠度指標(biāo)的影響。分析結(jié)果表明，用本文建議公式計算再生混凝土梁正截面受彎承載力，其可靠度指標(biāo)符合我國《建筑結(jié)構(gòu)可靠度設(shè)計統(tǒng)一標(biāo)準(zhǔn)》（GB50068-2001）中規(guī)定的目標(biāo)可靠度指標(biāo)。不同參數(shù)對可靠度影響程度不同，在實際工程設(shè)計時應(yīng)綜合考慮。 （3）在本文建議公式的基礎(chǔ)上，分析再生混凝土梁正常使用極限狀態(tài)最大裂縫寬度和撓度可靠度。分析結(jié)果表明，用本文建議公式計算再生混凝土梁正常使用階段最大裂縫寬度和撓度，其可靠度指標(biāo)基本符合我國《建筑結(jié)構(gòu)可靠度設(shè)計統(tǒng)一標(biāo)準(zhǔn)》（GB50068-2001）中規(guī)定的目標(biāo)可靠度指標(biāo)。不同參數(shù)對可靠度影響程度不同，在實際工程設(shè)計時應(yīng)綜合考慮。
[Abstract]:With the rapid development of urbanization in China, the disposal of construction waste and the shortage of construction raw materials have become an important problem affecting the national economy and people's livelihood. On the one hand, the recycled concrete and its structure have digested a large amount of construction waste and solved the problem of shortage of construction raw materials. It is a real environment-friendly building material. However, the design method of recycled concrete and its structure is not perfect, especially the reliability analysis of the basic components of recycled concrete is urgently needed to be solved, which makes the recycled concrete technology can not be widely used in practical engineering. On the basis of collecting relevant domestic research results and the experimental data of our group, this paper makes a systematic analysis of the maximum crack width and deflection calculation method for the flexural bearing capacity of the normal section of recycled concrete beams and the maximum crack width and deflection under the normal service limit state. The related calculation formula is put forward, and then the JC method is used to analyze the bearing capacity and the reliability of the limit state in normal use. Finally, the reliability evaluation and suggestions are put forward. The main work of this paper is as follows: (1) Statistics and analysis include the bending test data of recycled concrete beams completed by our research group. The formula for calculating the flexural bearing capacity of normal section and the maximum crack width and deflection in normal service stage of beams in GB50010-2010 has been revised, and the relevant suggested formulas for recycled concrete beams have been determined. (2) based on the formulas suggested in this paper, The ultimate state reliability of flexural bearing capacity of normal section of recycled concrete beam is analyzed and the influence of different parameters on reliability index is studied. The analysis results show that the flexural bearing capacity of the normal section of recycled concrete beams is calculated by the formula proposed in this paper, and its reliability index is in line with the target reliability index stipulated in the Unified Standard for Reliability Design of Building structures (GB50068-2001) in China. Different parameters have different influence on reliability, which should be considered in practical engineering design. (3) on the basis of the formula suggested in this paper, the maximum crack width and deflection reliability of recycled concrete beams under normal service limit state are analyzed. The analysis results show that the maximum crack width and deflection of recycled concrete beams are calculated by the formula proposed in this paper, and the reliability index basically accords with the target reliability index stipulated in the Unified Standard for Reliability Design of Building structures (GB50068-2001) in China. The influence of different parameters on reliability is different and should be considered comprehensively in practical engineering design.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU375.1

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