【摘要】：鋼與混凝土組合結(jié)構(gòu)同時(shí)具備混凝土結(jié)構(gòu)和鋼結(jié)構(gòu)的優(yōu)點(diǎn),承載力高,施工方便,節(jié)省材料,因此能夠在我國(guó)迅速發(fā)展并得到廣泛應(yīng)用。其中鋼-混凝土組合梁鋼框架結(jié)構(gòu)是一種在高層鋼框架結(jié)構(gòu)體系中常見且重要的組合結(jié)構(gòu)形式,這種結(jié)構(gòu)實(shí)質(zhì)上就是通過剪力連接件將鋼框架中的鋼梁與混凝土樓板結(jié)合在一起而形成的結(jié)構(gòu)體系。本文通過結(jié)構(gòu)設(shè)計(jì)分析軟件ETABS分別建立11層組合梁鋼框架結(jié)構(gòu)以及純鋼框架結(jié)構(gòu)并進(jìn)行抗震性能的對(duì)比分析,進(jìn)行的主要研究?jī)?nèi)容如下:1、采用高層建筑結(jié)構(gòu)設(shè)計(jì)分析軟件ETABS建立結(jié)構(gòu)計(jì)算模型,利用反應(yīng)譜分析方法得到兩種結(jié)構(gòu)的自振周期、樓層位移、層間位移角以及樓層剪力等結(jié)構(gòu)性能數(shù)據(jù),對(duì)比分析兩種結(jié)構(gòu)模型在地震作用下的動(dòng)力響應(yīng);2、對(duì)結(jié)構(gòu)采用時(shí)程分析方法作為對(duì)反應(yīng)譜分析方法的補(bǔ)充計(jì)算,分別對(duì)在多遇地震和罕遇地震作用下的兩種結(jié)構(gòu)進(jìn)行地震響應(yīng)計(jì)算,得到兩種結(jié)構(gòu)模型在特定地震波作用下的頂點(diǎn)位移、層間位移以及基底剪力等性能數(shù)據(jù)并比較分析兩種結(jié)構(gòu)的時(shí)程曲線變化規(guī)律;3、分別對(duì)結(jié)構(gòu)施加不同的側(cè)向水平加載模式,并對(duì)兩種結(jié)構(gòu)進(jìn)行多遇地震和罕遇地震作用下的Pushover分析,得到結(jié)構(gòu)在不同荷載工況作用下的塑性鉸分布情況、頂點(diǎn)位移、樓層位移及層間位移等結(jié)果,并對(duì)結(jié)構(gòu)的抗震性能進(jìn)行多方面的評(píng)估;通過對(duì)三種抗震分析方法得到的結(jié)果進(jìn)行對(duì)比分析,并對(duì)結(jié)構(gòu)的抗震性能進(jìn)行評(píng)價(jià)。分析結(jié)果表明忽略樓板的空間組合作用可能會(huì)放大結(jié)構(gòu)本身的自振周期,低估地震作用和結(jié)構(gòu)位移響應(yīng),會(huì)造成對(duì)結(jié)構(gòu)的薄弱層位置、塑性鉸的出鉸位置和順序以及破壞機(jī)制等判斷產(chǎn)生較大的誤差。因此要對(duì)結(jié)構(gòu)的抗震性能進(jìn)行準(zhǔn)確有效的評(píng)估,就必須合理考慮樓板與鋼梁的空間組合作用對(duì)結(jié)構(gòu)抗震性能產(chǎn)生的影響。
[Abstract]:The composite structure of steel and concrete has the advantages of both concrete structure and steel structure, high bearing capacity, convenient construction and saving materials, so it can be rapidly developed and widely used in our country. Steel frame structure with steel-concrete composite beam is a common and important composite structure in high-rise steel frame structure system. In essence, this kind of structure is a structure system which is formed by combining steel beam and concrete floor with shear joint. In this paper, 11-story composite beam steel frame structure and pure steel frame structure are established by the structure design and analysis software ETABS, and the seismic performance is compared and analyzed. The main research contents are as follows: 1. The structural calculation model is established by using the structural design and analysis software ETABS, and the natural vibration period and floor displacement of the two structures are obtained by using the response spectrum analysis method. The dynamic responses of the two structural models under earthquake action are compared and analyzed with the structural performance data such as interstory displacement angle and floor shear force. (2) the time-history analysis method is used as the supplementary calculation to the response spectrum analysis method for the structure. The seismic responses of two kinds of structures subjected to frequent and rare earthquakes are calculated, and the vertex displacements of the two structural models under the action of specific seismic waves are obtained. The time history curves of the two structures are compared and analyzed. 3, different lateral loading modes are applied to the structures. The Pushover analysis of the two structures under frequent and rare earthquakes is carried out, and the results of plastic hinge distribution, vertex displacement, floor displacement and floor displacement under different load conditions are obtained. The seismic performance of the structure is evaluated from many aspects, and the results obtained by the three seismic analysis methods are compared and analyzed, and the seismic performance of the structure is evaluated. The analysis results show that neglecting the spatial combination of floor slab may enlarge the natural vibration period of the structure itself, underestimate the seismic action and the displacement response of the structure, and result in the weak layer position of the structure. The location, sequence and failure mechanism of plastic hinge have great error. Therefore, in order to evaluate the seismic performance of the structure accurately and effectively, it is necessary to consider reasonably the effect of the space combination of floor slab and steel beam on the seismic performance of the structure.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU398.9;TU352.11

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