本文選題：轉(zhuǎn)換桁架 + 型鋼混凝土　； 參考：《重慶大學(xué)》2015年碩士論文

【摘要】：隨著社會的發(fā)展,由于人們追求快速的生活節(jié)奏和舒適的生活態(tài)度,世界各地的高層建筑變得日益豐富,滿足各種功能的帶轉(zhuǎn)換層結(jié)構(gòu)也隨之快速發(fā)展起來。經(jīng)過幾十年的發(fā)展,帶轉(zhuǎn)換層結(jié)構(gòu)的設(shè)計也日漸趨于成熟,特別是帶轉(zhuǎn)換桁架的型鋼混凝土框架結(jié)構(gòu)。本文的研究主要包括兩個方面：第一部分是帶桁架轉(zhuǎn)換層的型鋼混凝土框架結(jié)構(gòu)在罕遇地震作用下的動力時程分析,第二部分是設(shè)置鉛芯疊層橡膠支座的帶桁架轉(zhuǎn)換層的型鋼混凝土框架結(jié)構(gòu)在罕遇地震作用下的動力時程對比分析。具體分析敘述如下：口桁架轉(zhuǎn)換層設(shè)置高度不同,型鋼混凝土框架結(jié)構(gòu)在罕遇地震作用下的動力響應(yīng)也有一定的區(qū)別和規(guī)律。因此,為了分析設(shè)置不同高度的桁架轉(zhuǎn)換層的型鋼混凝土框架結(jié)構(gòu)的抗震性能,采用SAP2000建立4個有限元結(jié)構(gòu)模型,分別為桁架轉(zhuǎn)換層設(shè)置在型鋼混凝土框架結(jié)構(gòu)的第三、四、五和六層。根據(jù)場地特征周期Tg和抗震結(jié)構(gòu)的第一自振周期T1的雙重指標(biāo)選取的地震波,對比分析4個模型在罕遇地震作用下的層間位移、層間剪力以及絕對加速度。結(jié)果表明：桁架轉(zhuǎn)換層設(shè)置高度越高,轉(zhuǎn)換層以下的層間側(cè)移越大,型鋼混凝土柱的層間剪力越大,絕對加速度變化幅值越大。而在轉(zhuǎn)換層附近,結(jié)構(gòu)層間位移、層間剪力以及絕對加速度都有較大的突變。所以在設(shè)計帶桁架轉(zhuǎn)換層的型鋼混凝土結(jié)構(gòu)的時候,應(yīng)當(dāng)考慮轉(zhuǎn)換層附近層間剪力突變的情況,采取合理有效的措施盡量減小突變�？跒榱朔治鲈O(shè)置鉛芯疊層橡膠支座對不同高度的桁架轉(zhuǎn)換型鋼混凝土結(jié)構(gòu)的減震效果,再建立4個帶橡膠支座的有限元結(jié)構(gòu)模型,其中模型的桁架轉(zhuǎn)換層同樣設(shè)置在型鋼混凝土框架結(jié)構(gòu)的第三、四、五和六層。根據(jù)隔震結(jié)構(gòu)的第一自振周期T1的指標(biāo)另外選取的地震波,進(jìn)行八個模型在地震作用下的時程對比分析,研究轉(zhuǎn)換桁架設(shè)置鉛芯疊層橡膠支座高度時,結(jié)構(gòu)在罕遇地震下的抗震性能分析。結(jié)果表明：設(shè)置鉛芯疊層橡膠支座的帶桁架轉(zhuǎn)換層型鋼混凝土框架結(jié)構(gòu)的抗震性能良好,結(jié)構(gòu)的層間位移、層間剪力以及絕對加速度均大大減小。
[Abstract]:With the development of society, because of people's pursuit of rapid pace of life and comfortable life attitude, high-rise buildings around the world have become increasingly rich, and the transition structure with various functions has also developed rapidly.With the development of several decades, the design of the structure with transfer layer is becoming more and more mature, especially the steel reinforced concrete frame structure with transfer truss.The research of this paper mainly includes two aspects: the first part is the dynamic time history analysis of steel reinforced concrete frame structure with truss transfer story under the action of rare earthquake.The second part is the dynamic time history comparison analysis of the steel reinforced concrete frame structure with truss transfer layer with lead laminated rubber bearing under rare earthquake.The concrete analysis and description are as follows: the dynamic response of SRC frame structure under rare earthquake also has some differences and rules.Therefore, in order to analyze the seismic behavior of steel reinforced concrete frame structure with different height truss transfer story, four finite element structural models are established by using SAP2000, which are the third and fourth of the steel reinforced concrete frame structure with truss transfer story.Five and six floors.According to the seismic waves selected by the double indexes of the site characteristic period TG and the first natural vibration period T1 of the seismic structure, the interstory displacement, interstory shear force and absolute acceleration of the four models under rare earthquake are compared and analyzed.The results show that the higher the height of the truss transfer layer, the greater the lateral displacement of the layer below the transfer layer, the greater the interstory shear force of the SRC column and the greater the amplitude of the absolute acceleration.However, in the vicinity of the transfer layer, the displacement, shear force and absolute acceleration of the structure have great abrupt changes.Therefore, when designing a steel reinforced concrete structure with a truss transfer layer, the sudden change of shear force between the layers near the transfer layer should be considered, and reasonable and effective measures should be taken to minimize the abrupt change as far as possible.In order to analyze the damping effect of lead-core laminated rubber bearing on different height truss transition steel concrete structure, four finite element structural models with rubber bearing are established.The truss transfer layer of the model is also located in the third, fourth, fifth and sixth floors of the SRC frame structure.According to the index of the first natural vibration period T1 of the isolated structure, the time history contrast analysis of the eight models under earthquake action is carried out, and the height of the lead-core laminated rubber bearing is studied when the transition truss is set.Seismic performance analysis of structures under rare earthquakes.The results show that the seismic behavior of the steel reinforced concrete frame structure with truss transfer story is good, and the interstory displacement, interstory shear force and absolute acceleration of the structure are greatly reduced.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU352.11;TU398.9

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