【摘要】：就我國而言，為了解決人口眾多，用地緊張問題，多高層建筑在我國房屋建筑中迅速增多，而框架-剪力墻結(jié)構(gòu)體系又是目前高層結(jié)構(gòu)中最常用的結(jié)構(gòu)形式之一，且在城市建筑結(jié)構(gòu)中占有較大的比重。因此開展該類結(jié)構(gòu)抗震性能分析對(duì)震害防御及地震災(zāi)害應(yīng)急具有重要的應(yīng)用價(jià)值。 首先，本文總結(jié)了關(guān)于結(jié)構(gòu)地震易損性研究的國內(nèi)外現(xiàn)狀，并針對(duì)當(dāng)前框架-剪力墻結(jié)構(gòu)缺少實(shí)際震害資料，而且對(duì)框架-剪力墻結(jié)構(gòu)的地震易損性研究較少的狀況，提出了基于增量動(dòng)力分析對(duì)框架-剪力墻結(jié)構(gòu)進(jìn)行地震易損性研究的方法。 其次，本文以一棟12層的框架-剪力墻結(jié)構(gòu)為例，并以SAP2000為分析軟件，建立了不同剪力墻厚度和底層層高下的結(jié)構(gòu)有限元分析模型。并對(duì)各模型進(jìn)行了罕遇地震作用下的彈塑性分析。并根據(jù)分析結(jié)果，研究了結(jié)構(gòu)的固有周期、頂層加速度、結(jié)構(gòu)各層水平位移、結(jié)構(gòu)各層層間位移角隨剪力墻厚度和底層層高改變而變化的規(guī)律。 然后，從各模型中分別選取一榀典型的框架-剪力墻結(jié)構(gòu)進(jìn)行IDA分析，并根據(jù)IDA分析結(jié)果對(duì)框架-剪力墻結(jié)構(gòu)展開了地震易損性分析研究，評(píng)價(jià)了結(jié)構(gòu)的抗震性能，分析了剪力墻厚度和底層層高的變化對(duì)結(jié)構(gòu)抗倒塌能力的影響。分析結(jié)果表明，，嚴(yán)格按照我國現(xiàn)行設(shè)計(jì)規(guī)范設(shè)計(jì)的框架-剪力墻結(jié)構(gòu)都能滿足“大震不倒”的設(shè)防目標(biāo)。隨著剪力墻厚度的增加，結(jié)構(gòu)抗震性能增強(qiáng)，結(jié)構(gòu)更難達(dá)到各破壞狀態(tài)，當(dāng)剪力墻厚度達(dá)到一定程度后，其對(duì)結(jié)構(gòu)達(dá)到各破壞狀態(tài)概率的影響度會(huì)越來越小。隨著底層層高的增加，結(jié)構(gòu)抗震性能雖然有所降低，結(jié)構(gòu)更容易達(dá)到各破壞狀態(tài)，但還是可以發(fā)現(xiàn)，當(dāng)?shù)讓訉痈咴跇?biāo)準(zhǔn)層層高的1~2倍之間變化時(shí)，結(jié)構(gòu)的抗倒塌儲(chǔ)備系數(shù)降低的幅度不大，即結(jié)構(gòu)的抗倒塌能力不會(huì)顯著降低。 最后，對(duì)本文的研究工作作了總結(jié)，并提出了今后工作的方向。
[Abstract]:As far as our country is concerned, in order to solve the problem of large population and shortage of land, many high-rise buildings are increasing rapidly in our country, and the frame-shear wall structure system is one of the most commonly used structural forms in high-rise structures at present. And occupies a large proportion in the urban building structure. Therefore, the seismic performance analysis of this kind of structures has important application value in earthquake disaster prevention and earthquake disaster emergency. First of all, this paper summarizes the current situation of seismic vulnerability of structures at home and abroad, and aims at the lack of actual seismic damage data of frame-shear wall structures, and the situation that the seismic vulnerability of frame-shear wall structures is less studied. Based on incremental dynamic analysis, the seismic vulnerability of frame-shear wall structures is studied. Secondly, taking a 12-story frame-shear wall structure as an example, and taking SAP2000 as the analysis software, the finite element analysis model of the structure with different shear wall thickness and the height of the bottom layer is established. The elastic-plastic analysis of each model under the action of rare earthquake is carried out. Based on the analysis results, the inherent period of the structure, the acceleration of the top floor, the horizontal displacement of each story of the structure, and the displacement angle between the layers of the structure are studied, which vary with the thickness of the shear wall and the height of the bottom layer. Then, a typical frame-shear wall structure is selected from each model for IDA analysis. According to the results of IDA analysis, the seismic vulnerability analysis of frame-shear wall structure is carried out, and the seismic performance of the structure is evaluated. The influence of the thickness of shear wall and the height of the bottom layer on the collapse resistance of the structure is analyzed. The analysis results show that the frame-shear wall structure designed strictly according to the current design code of our country can meet the goal of "strong earthquake will not collapse". With the increase of shear wall thickness, the seismic performance of the structure is enhanced, and it is more difficult for the structure to reach the failure state. When the shear wall thickness reaches a certain degree, the influence of the shear wall thickness on the probability of the structure to each failure state will become smaller and smaller. With the increase of the height of the bottom layer, the seismic performance of the structure decreases somewhat, and the structure is more likely to reach the failure state. However, it can be found that when the height of the bottom layer changes between 1 and 2 times the standard layer height, The collapse resistance reserve coefficient of the structure is not much reduced, that is, the collapse resistance of the structure will not be significantly reduced. Finally, the research work of this paper is summarized, and the direction of future work is put forward.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU398.2

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