本文選題：抗震性能 + 全壽命周期費用　； 參考：《南昌航空大學(xué)》2017年碩士論文

【摘要】：近年來基于結(jié)構(gòu)性能的抗震設(shè)計得到各國學(xué)者的廣泛關(guān)注并且展開了多方面的研究。在關(guān)注地震影響下結(jié)構(gòu)抗震性能的同時,人們也迫切想知道結(jié)構(gòu)在滿足預(yù)設(shè)的不同抗震性能水平下所需要的合理成本費用,以方便尋求既滿足性能要求又能被社會和業(yè)主所接受的結(jié)構(gòu)方案。因此合理確定在各種抗震性能水平下的結(jié)構(gòu)全壽命周期費用就非常重要。本文考慮到建筑工程的長周期特點,針對結(jié)構(gòu)各級抗震性能水準,采用合理的折現(xiàn)計算方法對全壽命周期成本進行研究,構(gòu)建結(jié)構(gòu)全壽命周期費用計算方法;主要內(nèi)容如下:(1)按現(xiàn)行規(guī)范三水準設(shè)防的設(shè)計思想,將抗震結(jié)構(gòu)劃分為五級抗震性能水準,以層間位移角作為量化判定標準,判斷各級抗震性能水平;采用極值III型地震烈度密度函數(shù),根據(jù)地震區(qū)劃考慮不同地區(qū)函數(shù)中形狀系數(shù)不同的影響,對結(jié)構(gòu)采用簡化的失效判據(jù),采用變步長辛普森法編制matlab程序求解不同設(shè)防水準下結(jié)構(gòu)各抗震性能水平下的失效概率,進而求出結(jié)構(gòu)的失效損失期望值;(2)研究結(jié)構(gòu)全壽命周期費用中檢查維護費用和預(yù)期失效損失與初始造價的關(guān)系,考慮到建筑工程的長周期特點,運用隨機數(shù)計算模型對我國通貨膨脹率進行研究,根據(jù)通貨膨脹率選取Phillip Cady提出的折現(xiàn)率模型對檢查維護費用進行現(xiàn)值折現(xiàn)計算,采用固定折現(xiàn)率方法對失效損失期望進行折現(xiàn)計算;(3)基于以上工作構(gòu)建基于抗震性能的結(jié)構(gòu)全壽命周期費用的計算方法,對全壽命周期費用進行分析研究,通過不同通貨膨脹水平下采用相應(yīng)不同折現(xiàn)率水平對全壽命周期費用的計算進行對比分析,分析表明:不同折現(xiàn)率水平對全壽命周期費用影響很大,按全壽命周期費用最小進行的抗震優(yōu)化設(shè)計需考慮不同地區(qū)經(jīng)濟發(fā)展水平的影響;(4)類比風(fēng)險管理學(xué)中的投資風(fēng)險系數(shù),從經(jīng)濟學(xué)角度計算結(jié)構(gòu)抗震能力系數(shù)θ,來評估結(jié)構(gòu)的抗震能力。運用本文方法對兩個不同地震區(qū)中實際框架結(jié)構(gòu)進行全壽命周期成本計算和抗震能力計算,結(jié)果表明本文構(gòu)建的全壽命周期費用計算方法完全可行。
[Abstract]:In recent years, aseismic design based on structural performance has been widely concerned by scholars all over the world and many aspects of research have been carried out. While paying close attention to the seismic behavior of structures affected by earthquakes, people also want to know the reasonable cost of structures at different levels of seismic performance. To facilitate the search for both performance requirements and can be accepted by the community and owners of structural solutions. Therefore, it is very important to reasonably determine the life cycle cost of structures under various seismic performance levels. In this paper, considering the long period characteristic of the building engineering, according to the seismic performance level of the structure at all levels, the reasonable discounted calculation method is adopted to study the whole life cycle cost, and the calculation method of the whole life cycle cost of the structure is constructed. The main contents are as follows: (1) according to the design idea of three-level fortification in current code, the aseismic structure is divided into five levels of seismic performance level, and the level of seismic performance at all levels is judged by using the displacement angle of the floor as the quantitative criterion; Based on the extreme seismic intensity density function of type III and considering the influence of different shape coefficients in different regions according to the seismic regionalization, the simplified failure criterion is adopted for the structure. The variable step Simpson method is used to compile the matlab program to solve the failure probability of different seismic performance levels of structures under different fortification levels. Then the expected value of structural failure loss is obtained. (2) to study the relationship between maintenance cost, expected failure loss and initial cost in the whole life cycle cost of the structure, taking into account the long period characteristic of building engineering, The inflation rate in China is studied by using random number calculation model. According to the discount rate model proposed by Phillip Cady, the present value of inspection and maintenance cost is calculated. The method of fixed discount rate is used to calculate the expectation of failure loss. (3) based on the above work, the calculation method of the whole life cycle cost of the structure based on seismic performance is constructed, and the life cycle cost of the structure is analyzed and studied. Through the comparative analysis of the calculation of life cycle cost with different discount rate level under different inflation level, the analysis shows that different discount rate level has great influence on the whole life cycle cost. According to the minimum life-cycle cost seismic optimization design should consider the impact of different regional economic development level. (4) compare the investment risk coefficient in risk management. The aseismic capacity of the structure is evaluated by calculating the seismic capacity coefficient 胃 from the angle of economics. The whole life cycle cost and seismic capacity of the real frame structures in two different seismic regions are calculated by using the method in this paper. The results show that the proposed method is feasible.
【學(xué)位授予單位】：南昌航空大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU352.11

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