本文選題：改造 + 加固�。� 參考：《長(zhǎng)沙理工大學(xué)》2014年碩士論文

【摘要】：目前,我國(guó)建筑工程開(kāi)始進(jìn)入新建與舊房改造加固齊頭并進(jìn)的階段。國(guó)內(nèi)有大量的建筑物因不可抗拒的自然災(zāi)害,而受到不同程度的損傷,以及建筑物本身不可抗拒的老化,從而使建筑物的承載力、可靠度及使用要求受到一定程度的影響；隨著人們生活和生產(chǎn)水平的提高,原有建筑物的使用功能愈來(lái)愈難以滿足人們對(duì)建筑功能的要求,從而不得不再一次思考拓展建筑物的使用功能,并對(duì)其進(jìn)行改造,以滿足時(shí)代變化的要求。采用科學(xué)有效的加固方法或者改造方案,使其滿足人們對(duì)新功能的要求或滿足正常使用的要求,并對(duì)改造加固的結(jié)構(gòu)進(jìn)行有效的評(píng)價(jià)。根據(jù)本工程改造加固的特點(diǎn),結(jié)合加固規(guī)范,介紹了增大截面加固法、體外預(yù)應(yīng)力加固法及粘貼碳纖維加固法的計(jì)算理論、設(shè)計(jì)規(guī)定及其優(yōu)缺點(diǎn)；還詳細(xì)的介紹了植筋技術(shù)的計(jì)算理論和構(gòu)造規(guī)定。簡(jiǎn)單的介紹了粘貼鋼板加固法、增設(shè)支點(diǎn)加固法、置換混凝土加固法及外粘型鋼加固法的優(yōu)缺點(diǎn)、使用方法、使用條件和可加固構(gòu)件的形式。對(duì)以上加固方法以表格的形式,分析出各種加固方法和構(gòu)件加固目的的綜合適應(yīng)性進(jìn)行比較,分析出構(gòu)件在不同情況下的最優(yōu)加固方法,為本寫字樓選擇合理的改造加固方案打下良好的基礎(chǔ)。根據(jù)寫字樓本身的結(jié)構(gòu)特點(diǎn)及結(jié)構(gòu)功能改變的特點(diǎn),研究分析出了單層鋼筋混凝土桁架梁的方案,并對(duì)不同的桁架模型進(jìn)行受力對(duì)比分析,最終確定桁架中構(gòu)件布置及其截面尺寸。在實(shí)際豎向荷載作用下,對(duì)桁架梁進(jìn)行受力分析,找出需要加固的構(gòu)件或位置并選擇合理的加固方法對(duì)其加固,對(duì)新增鋼筋混凝土構(gòu)件的配筋計(jì)算。寫字樓的改造加固研究分析過(guò)程中,采用整體分析方法,同時(shí)闡明了此方法的應(yīng)用程序,并得出如下結(jié)論：采用整體分析方法,可以有效解決從局部或構(gòu)件層面上處理加固改造問(wèn)題的不足和各種缺陷,對(duì)加固改造工程的研究具有重要的指導(dǎo)作用。
[Abstract]:At present, the construction project of our country begins to enter the phase of new construction and retrofit and strengthening of old houses. In China, a large number of buildings are damaged by irresistible natural disasters, and the aging of buildings is irresistible, so that the carrying capacity, reliability and requirements of use of buildings are affected to a certain extent. With the improvement of people's living and production level, it is more and more difficult to meet the requirement of building function by using the function of the original building, so we have to think about expanding the use function of the building again and transform it. To meet the changing demands of the times. A scientific and effective reinforcement method or a retrofit scheme is adopted to make it meet the requirements of people for new functions or for normal use, and an effective evaluation of the reconstructed and strengthened structures is carried out. According to the characteristics of the reconstruction and reinforcement of this project and combined with the strengthening code, the paper introduces the calculation theory, design rules, advantages and disadvantages of the reinforcement method of increasing cross section, external prestressing force and bonded carbon fiber. It also introduces the calculation theory and construction regulation of the reinforcement technology in detail. This paper introduces simply the advantages and disadvantages, the usage methods, the conditions and the forms of the members that can be strengthened by sticking the steel plate, adding the fulcrum reinforcement method, the replacement concrete reinforcement method and the external adhesive steel reinforcement method. In the form of tables, the comprehensive adaptability of various reinforcement methods and the purpose of strengthening members are compared, and the optimum reinforcement methods of members under different conditions are analyzed. It lays a good foundation for the office building to select a reasonable retrofit and reinforcement scheme. According to the structural characteristics of office building and the characteristics of structural function change, the scheme of single-story reinforced concrete truss beam is studied and analyzed, and the stress of different truss models is compared and analyzed. Finally determine the layout of the truss members and the size of the section. Under the actual vertical load, the stress of the truss beam is analyzed, the member or position that needs to be strengthened is found out, and the reasonable reinforcement method is selected to reinforce it, and the reinforcement calculation of the new reinforced concrete member is made. In the process of research and analysis on the reconstruction and reinforcement of office buildings, the whole analysis method is adopted, and the application program of this method is expounded, and the following conclusions are drawn: the whole analysis method is adopted, It can effectively solve the deficiency and various defects in dealing with the problem of reinforcement and transformation from the local or component level. It plays an important guiding role in the research of reinforcement and reconstruction engineering.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU746.3
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本文編號(hào)：1798118