本文選題：地震作用影響 + 既有鋼筋混凝土框架柱　； 參考：《長安大學》2014年碩士論文

【摘要】：我國是一個多地震國家。近十年時間里，我國遭受了多次強烈地震，給地震災(zāi)區(qū)人民生命和財產(chǎn)造成了嚴重的損失。強烈地震的震害既暴露了我國建筑結(jié)構(gòu)抗震設(shè)計方面存在的問題與不足，又充分肯定了唐山大地震以來所取得的巨大進步。 從設(shè)計標準方面來講，上個世紀70年代以前建造的框架結(jié)構(gòu)大多沒有考慮抗震設(shè)防；80年代建造的框架結(jié)構(gòu)大部分是按照78版抗震規(guī)范設(shè)計，考慮了抗震設(shè)防并采取一定的抗震構(gòu)造措施；90年代建造的框架結(jié)構(gòu)是按照89版抗震規(guī)范設(shè)計，抗震設(shè)防有很大提高，抗震構(gòu)造措施方面相對完善；進入新世紀以來，我國又先后頒布實施了01版、10版抗震規(guī)范，抗震設(shè)防和抗震構(gòu)造措施方面更加完善合理。因此，對建造于不同時期的鋼筋混凝土框架結(jié)構(gòu)而言，其抗震性能水平必定存在差異。 鋼筋混凝土框架柱作為框架結(jié)構(gòu)重要的豎向承重構(gòu)件，在強烈地震作用下很容易發(fā)生破壞。從防震減災(zāi)的角度考慮，如果鋼筋混凝土框架柱發(fā)生嚴重破壞并且很難修復(fù)，即使建筑物沒有倒塌，但仍然需要拆除重新建造。所以，我們有必要研究鋼筋混凝土框架柱的抗震性能水平，以保證其具有足夠的地震承載力和良好的延性，避免在地震作用下發(fā)生破壞。 基于此，本文通過新舊建筑抗震設(shè)計規(guī)范比較，利用ABAQUS軟件對6根不同構(gòu)造的鋼筋混凝土框架柱進行有限元模擬，繪出其荷載-位移骨架曲線，由骨架曲線比較分析地震作用下既有鋼筋混凝土框架柱的抗震性能。研究內(nèi)容主要如下： (1)比較了鋼筋混凝土框架柱在《工業(yè)與民用建筑抗震設(shè)計規(guī)范》TJ11-78、《建筑抗震設(shè)計規(guī)范》GBJ11-89和國家新頒布的《建筑抗震設(shè)計規(guī)范》GB50011-2010抗震構(gòu)造措施方面的不同，，總結(jié)新舊規(guī)范各自抗震設(shè)計特點。 (2)參照低周反復(fù)荷載作用下鋼筋混凝土框架柱的試驗資料，選取6根不同構(gòu)造的鋼筋混凝土框架柱進行ABAQUS有限元模擬。 (3)討論軸壓比、箍筋設(shè)置、縱筋配筋率對鋼筋混凝土框架柱抗震性能的影響。 (4)研究新舊規(guī)范關(guān)于既有鋼筋混凝土框架柱抗震設(shè)計的影響，對于及時把握新規(guī)范的修訂實質(zhì)、發(fā)現(xiàn)既有框架結(jié)構(gòu)存在的設(shè)計缺陷，并且對于既有框架結(jié)構(gòu)的加固改造也具有參考意義。
[Abstract]:China is a country with many earthquakes. In the past ten years, our country has suffered many strong earthquakes, which has caused serious loss of life and property to the people in the earthquake-stricken area. The earthquake damage of the strong earthquake not only exposed the problems and shortcomings in the seismic design of building structures in China, but also fully affirmed the great progress made since the Tangshan earthquake. In terms of design standards, most of the frame structures built before the 1970s did not take into account seismic fortification. Most of the frame structures built in the 1980s were designed in accordance with the 78 edition of the seismic code. Considering seismic fortification and taking certain seismic structural measures the frame structure built in the 1990s is designed according to the 89 edition seismic code, the seismic fortification has been greatly improved, and the seismic structural measures have been relatively perfect; since the beginning of the new century, China has promulgated and implemented the tenth edition of the seismic code, the seismic fortification and seismic structural measures are more perfect and reasonable. Therefore, for reinforced concrete frame structures built in different periods, the seismic performance level must be different. As an important vertical bearing member of frame structure, reinforced concrete frame column is liable to damage under strong earthquake. From the point of view of earthquake prevention and mitigation, if the reinforced concrete frame column is seriously damaged and difficult to repair, even if the building does not collapse, it still needs to be demolished and rebuilt. Therefore, it is necessary for us to study the seismic performance of reinforced concrete frame columns in order to ensure their sufficient seismic bearing capacity and good ductility, and to avoid the damage under earthquake action. Based on this, through the comparison of new and old building seismic design codes, the finite element simulation of six reinforced concrete frame columns with different structures is carried out by using ABAQUS software, and the load-displacement skeleton curves are drawn. The seismic behavior of reinforced concrete frame columns under earthquake action is analyzed by comparison of skeleton curves. The main contents of the study are as follows: (1) the differences between reinforced concrete frame columns in the Code for Seismic Design of Industrial and Civil buildings (TJ11-78), the Code for aseismic Design of buildings (GBJ11-89) and the newly promulgated Code for aseismic Design of buildings (Code for Seismic Design of buildings) GB50011-2010 are compared. The characteristics of seismic design of new and old codes are summarized. According to the experimental data of reinforced concrete frame columns under low cyclic loading, six reinforced concrete frame columns with different structures are selected for ABAQUS finite element simulation. The effects of axial compression ratio, stirrups setting and reinforcement ratio on seismic behavior of reinforced concrete frame columns are discussed. 4) studying the influence of new and old codes on seismic design of existing reinforced concrete frame columns. In order to grasp the essence of the revision of the new code in time, the design defects of existing frame structures are found. It also has reference significance for the reinforcement and reconstruction of the existing frame structure.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU375.4;TU352.11

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