本文關(guān)鍵詞：高韌性肋形混凝土永久性模板技術(shù)研究　出處：《蘇州科技學(xué)院》2015年碩士論文　論文類型：學(xué)位論文

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【摘要】：在鋼筋混凝土結(jié)構(gòu)施工中,為降低工程施工成本,節(jié)約資源、能源,提高經(jīng)濟(jì)效益和社會(huì)效益,本研究提出用高韌性帶肋混凝土永久模板代替?zhèn)鹘y(tǒng)混凝土施工模板。該種模板既可作為混凝土成型的模型板,又是混凝土結(jié)構(gòu)的組成部分,即起鋼筋保護(hù)層作用。根據(jù)該種模板實(shí)際使用需要,本論文進(jìn)行了以下四方面探討。(1)新老混凝土結(jié)合面受力性能試驗(yàn)研究。設(shè)計(jì)制作了符合研究永久性模板新老混凝土結(jié)合面形式的試件,進(jìn)行新老混凝土結(jié)合面抗拉和抗剪試驗(yàn)研究,以檢驗(yàn)帶肋混凝土模板與新澆混凝土結(jié)合面的抗拉、抗剪能力。結(jié)果表明:摻加纖維的一期混凝土帶肋的新老結(jié)合面抗拉和抗剪強(qiáng)度較高,能夠滿足帶肋模板使用要求。(2)混凝土模板韌性系列試驗(yàn)研究。針對(duì)帶肋混凝土模板在運(yùn)輸、使用過程中要承受各種沖擊作用的現(xiàn)實(shí),進(jìn)行了纖維混凝土彎曲韌性、薄板(平板)抗沖擊及帶肋混凝土模板抗沖擊試驗(yàn),結(jié)果表明:在混凝土中摻適量纖維,可起到“類鋼筋”的作用,使其的韌性得到明顯改善。(3)高韌性帶肋永久性模板疊合構(gòu)件試驗(yàn)研究。使用本研究的高韌性帶肋混凝土模板制作鋼筋混凝土疊合板試件,并同時(shí)按常規(guī)方法制作了整澆板試件,同時(shí)進(jìn)行兩種板荷載試驗(yàn)。結(jié)果表明:整澆板和疊合板的承載力和變形能力基本相同。(4)有限元模擬。利用有限元軟件ABAQUS對(duì)疊合板進(jìn)行抗彎模擬分析,模擬結(jié)果和試驗(yàn)結(jié)果較為接近,說明高韌性帶肋混凝土永久模板的技術(shù)是可行的。本研究成果為高韌性帶肋混凝土永久模板的使用提供了依據(jù),同時(shí)部分成果也可應(yīng)用于混凝土結(jié)構(gòu)加固。
[Abstract]:In the construction of reinforced concrete structure, in order to reduce the construction cost, save resources, energy, and improve economic and social benefits. In this study, a permanent formwork with high toughness ribbed concrete is proposed to replace the traditional concrete construction formwork, which can be used not only as a formwork of concrete, but also as a component of concrete structure. That is to say, it acts as a protective layer of steel bar. According to the actual use of this kind of formwork needs. In this paper, the following four aspects are discussed. 1) the mechanical behavior of the new and old concrete joint surface is studied. The test pieces which accord with the research form of permanent formwork new and old concrete joint surface are designed and manufactured. The tensile and shear tests of the new and old concrete joints are carried out to test the tensile resistance of the concrete formwork with ribs and the new cast-in-place concrete joints. The results show that the tensile strength and shear strength of the new and old joints with ribs are higher. It can meet the application requirements of ribbed formwork. (2) A series of tests and studies on toughness of concrete formwork. Aiming at the reality that ribbed concrete formwork has to withstand all kinds of impact in the process of transportation. The flexural toughness of fiber reinforced concrete, the impact resistance of thin plate and the impact resistance of ribbed concrete formwork are tested. The results show that adding appropriate amount of fiber in concrete can play the role of "like steel bar". Its toughness is improved obviously. 3) the experimental study of high toughness ribbed permanent formwork superimposed members is carried out. The high toughness ribbed concrete formwork is used to make reinforced concrete composite slabs. At the same time, the whole cast-in-place plate specimen was made according to the conventional method. The results show that the bearing capacity and deformation capacity of cast-in-place slab and composite slab are basically the same. Finite element simulation. The bending resistance of laminated plates was simulated by finite element software ABAQUS. The simulation results are close to the experimental results, which shows that the technology of high toughness ribbed concrete permanent formwork is feasible. The research results provide a basis for the use of high toughness ribbed concrete permanent formwork. At the same time, some of the achievements can also be applied to the reinforcement of concrete structures.
【學(xué)位授予單位】：蘇州科技學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU755.2

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