本文選題：EPS復(fù)合墻體 + 夏熱冬暖地區(qū)��； 參考：《福建農(nóng)林大學(xué)》2017年碩士論文

【摘要】：論文針對以福建省、廣東省為代表的夏熱冬暖地區(qū)而新開發(fā)的一種EPS復(fù)合墻體為研究對象。該復(fù)合墻體系通過連接橋?qū)醋韵露享樞蝈e縫搭接EPS模塊(發(fā)泡聚苯乙烯保溫板)連接成空腔構(gòu)造,并在連接橋上放置鋼筋,然后向空腔注入混凝土而構(gòu)成的保溫承重一體化墻體,其特點是模塊可根據(jù)工程需要予以拆除或保留,拆除下來的模塊可多次重復(fù)利用,節(jié)省工程造價。論文的主要工作包括:首先,借鑒寒冷地區(qū)和夏熱冬冷地區(qū)EPS墻體的應(yīng)用研究成果,進行一種新型EPS復(fù)合墻體的開發(fā)設(shè)計、熱工性能計算及施工工藝研究;其次,借助ANSYS軟件,對所開發(fā)的EPS復(fù)合墻體開展非線性有限元分析,考察高寬比、混凝土等級、軸壓比、配筋率等因素對墻體承載力和延性的影響;最后,采用ANSYS和PKPM軟件建立一個三層三開間的房屋實體模型,進行層間位移及位移角等地震響應(yīng)特性分析,考察房屋安全性能,并提出合理的構(gòu)造建議。主要研究結(jié)論如下:1)所開發(fā)的EPS復(fù)合墻體熱工性能優(yōu)良且施工快捷,采用單側(cè)模塊構(gòu)造,即可滿足夏熱冬暖地區(qū)保溫隔熱要求;EPS復(fù)合墻體的混凝土厚度為120mm時,即完全滿足夏熱冬暖地區(qū)墻體受力及安全性能的要求。2)試件高寬比對墻體承載能力和延性有很大影響,墻體承載能力隨高寬比的增大而降低,而延性則相反;高寬比在0.8～2.0范圍內(nèi),承載力和延性與其近乎成線性關(guān)系;構(gòu)件極限承載力隨軸壓比的提高而增加,但卻伴隨著延性系數(shù)的降低,工程中宜選用合理的軸壓比。3)提高混凝土強度等級能增大承載能力,但效果不明顯,且對極限位移及延性作用不大,工程中宜采用C20～C30混凝土;一定的配筋率對結(jié)構(gòu)位移及延性具有提高作用,建議低層EPS復(fù)合墻體的配筋率取0.2%左右。4)在自重及其他荷載作用下,EPS復(fù)合墻體房屋主要發(fā)生豎向變形,且門窗洞口易產(chǎn)生應(yīng)力集中,工程中應(yīng)采取增加配筋或約束邊緣構(gòu)件等措施。上述研究成果可為夏熱冬暖地區(qū)EPS復(fù)合墻體有關(guān)技術(shù)規(guī)程的制定提供參考依據(jù),并為其工程應(yīng)用奠定基礎(chǔ)。
[Abstract]:In this paper, a new type of EPS composite wall is developed in Fujian Province and Guangdong Province, which is represented by hot summer and warm winter. The composite wall is constructed by connecting the bottom up order staggered EPS module (foam polystyrene insulation board) through a connecting bridge and placing steel bars on the connection bridge. Then the integral wall of heat preservation and bearing is formed by injecting concrete into the cavity. The characteristic of the wall is that the module can be removed or retained according to the need of the project, and the removed module can be reused many times and the cost of the project can be saved. The main work of this paper includes: firstly, using the application research results of EPS wall in cold area and hot summer and cold winter area for reference, the development and design of a new type of EPS composite wall, the calculation of thermal performance and the construction technology are carried out; secondly, with the help of ANSYS software, The nonlinear finite element analysis of the developed EPS composite wall is carried out, and the effects of aspect ratio, concrete grade, axial compression ratio and reinforcement ratio on the bearing capacity and ductility of the wall are investigated. By using ANSYS and PKPM software, a three-story and three-compartment model is built to analyze the seismic response characteristics such as interstory displacement and displacement angle. The safety performance of buildings is investigated and some reasonable construction suggestions are put forward. The main conclusions are as follows: (1) the thermal performance of EPS composite wall is excellent and the construction is quick. The concrete thickness of EPS composite wall can meet the requirement of heat preservation and heat insulation in hot summer and warm winter area when the concrete thickness of the wall is 120mm. That is to say, it fully meets the requirement of stress and safety performance of wall in hot summer and warm winter. 2) the ratio of height to width has great influence on the carrying capacity and ductility of the wall. The bearing capacity of the wall decreases with the increase of the ratio of height to width, but the ductility is opposite. When the aspect ratio is in the range of 0.8 ~ 2.0, the bearing capacity and ductility are almost linear, and the ultimate bearing capacity increases with the increase of axial compression ratio, but with the decrease of ductility coefficient. A reasonable axial compression ratio of .3) can increase the bearing capacity of concrete, but the effect is not obvious, and it has little effect on the ultimate displacement and ductility. C20C30 concrete should be used in the project. A certain reinforcement ratio can improve the displacement and ductility of the structure. It is suggested that the reinforcement ratio of the low-rise EPS composite wall should be about 0.2%.) under the action of self-weight and other loads, the main vertical deformation of the EPS composite wall building is observed. The stress concentration is easy to occur at the entrance of doors and windows, so some measures should be taken to increase the reinforcement or restrain the edge members in the engineering. The above research results can provide a reference basis for the formulation of relevant technical specifications of EPS composite wall in hot summer and warm winter area and lay a foundation for its engineering application.
【學(xué)位授予單位】：福建農(nóng)林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU551;TU761.12

【參考文獻】

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本文編號：2100363