本文選題：泡沫混凝土 + 外掛墻板��； 參考：《武漢理工大學(xué)》2015年碩士論文

【摘要】：本課題中的新型泡沫混凝土是采用粉煤灰、陶粒、發(fā)泡劑按配合比通過堿激發(fā)的方式高效發(fā)泡、高溫蒸汽養(yǎng)護(hù)而成的混凝土。泡沫混凝土中陶粒和水泥漿通過物理發(fā)泡的方式產(chǎn)生具有較大孔隙率的結(jié)構(gòu),因而減少了墻板的密度,其密度為600kg/m3。同時(shí)提高了墻板的自保溫性能,經(jīng)測定材料的導(dǎo)熱系數(shù)為0.14~0.15W/(m·k),隔熱性能較好。作為外掛墻板,其具有裝飾貼面粘貼強(qiáng)度高,模塊化程度高,施工周期短,安裝效率高,具有良好的經(jīng)濟(jì)效果和技術(shù)前景。本文在這一課題的背景下,對新型外掛板的力學(xué)特性進(jìn)行研究。本文圍繞這一新型材料,分別對泡沫混凝土材料、墻板以及墻板預(yù)埋節(jié)點(diǎn)的力學(xué)性能進(jìn)行了研究工作,并對對試驗(yàn)數(shù)據(jù)進(jìn)行了一定的理論分析,得出了主要完成了如下研究工作:(1)進(jìn)行了新型泡沫混凝土的基本力學(xué)性能研究,通過試驗(yàn)得出了其抗壓強(qiáng)度,劈裂抗拉強(qiáng)度,靜力受壓彈性模量,與防銹涂層鋼筋的粘結(jié)性能等基本力學(xué)性能指標(biāo)。對比兩種不同配合比的材料,分析其基本力學(xué)性能。結(jié)果表明,其具有較好的力學(xué)性能,能滿足規(guī)范規(guī)定限值以及工程實(shí)際需要。(2)通過試驗(yàn)研究了墻板的力學(xué)特性,進(jìn)行了不同配合比的墻板受彎承載力試驗(yàn),抗沖擊試驗(yàn),吊掛力試驗(yàn),對比不同配合比的墻板的試驗(yàn)結(jié)果,分析板的受力機(jī)理,不同配合比的板試驗(yàn)結(jié)果并無明顯差別。其試驗(yàn)結(jié)果均超出GB/T23451-2009《建筑用輕質(zhì)隔墻條板》限值的要求,說明墻板具有優(yōu)良力學(xué)性能,且板的設(shè)計(jì)偏安全。(3)亦對板端預(yù)埋節(jié)點(diǎn)的力學(xué)特性進(jìn)行了試驗(yàn)研究,采用單調(diào)加載的方式進(jìn)行,對不同節(jié)點(diǎn)形式以及不同配合比板的受彎和受剪承載力、節(jié)點(diǎn)耗能以及節(jié)點(diǎn)的破壞形態(tài)進(jìn)行了研究與分析,得出了各節(jié)點(diǎn)的極限承載力。(4)以試驗(yàn)數(shù)據(jù)為支撐,得出了墻板的正截面受彎配筋計(jì)算公式、斜截面受剪承載力的驗(yàn)算公式以及板的撓度計(jì)算公式,其公式的理論計(jì)算值與試驗(yàn)值接近,可以運(yùn)用于實(shí)際工程。本文最后給出了節(jié)點(diǎn)強(qiáng)度的設(shè)計(jì)建議值,本文建議從經(jīng)濟(jì)的角度考慮,應(yīng)采用P2節(jié)點(diǎn)作為泡沫混凝土墻板的預(yù)埋節(jié)點(diǎn)。最后得出本文的主要結(jié)論,并提出了進(jìn)一步研究方向。
[Abstract]:The new type of foamed concrete in this paper is made of fly ash, ceramsite and foaming agent, which is highly foamed by alkali excitation and cured by steam at high temperature. In foamed concrete, ceramic particles and cement slurry produce structures with large porosity by physical foaming, thus reducing the density of wall panels, the density of which is 600 kg / m ~ (3). At the same time, the self-insulation property of the wall panel is improved. The thermal conductivity of the material is 0.14~0.15W/(m KG, and the thermal insulation property is better. As an external wall board, it has high intensity of decorative veneer, high degree of modularization, short construction period, high installation efficiency, and has good economic effect and technical prospect. In this paper, the mechanical properties of a new type of external panel are studied under the background of this subject. In this paper, the mechanical properties of foamed concrete materials, wall panels and embedded joints are studied, and the experimental data are analyzed theoretically. The basic mechanical properties of the new foam concrete are studied. The compressive strength, the splitting tensile strength, the static compressive elastic modulus of the new foam concrete are obtained. Basic mechanical properties such as bond property with antirust coated steel bar. The basic mechanical properties of two kinds of materials with different mix ratio were analyzed. The results show that it has better mechanical properties, can meet the specified limits of the code and the actual engineering needs. The mechanical properties of the wall panels are studied through experiments, and the flexural bearing capacity tests and impact tests of the wall panels with different mix ratios are carried out. The test results of hanging force are compared with the test results of wall panels with different mix ratios, and the stress mechanism of the panels is analyzed. There is no obvious difference between the test results of different mix ratios and the test results. The test results exceed the limit value of GB/T23451-2009 < lightweight partition plate for building use >, which shows that the wall board has excellent mechanical properties, and the design of the board is on the side of safety. The mechanical properties of the plate end embedded joints are also studied experimentally. In this paper, the bending and shear bearing capacity, energy consumption of joints and failure modes of joints are studied and analyzed by monotone loading. The ultimate bearing capacity of each joint is obtained. (4) based on the test data, the formulas for calculating the flexural reinforcement of the normal section of the wall plate, the checking formula for the shear capacity of the inclined section and the deflection formula for the plate are obtained. The theoretical calculation value of the formula is close to the experimental value and can be used in practical engineering. At the end of this paper, the design value of joint strength is given. It is suggested that P2 joint should be used as the embedded joint of foamed concrete wall slab from the point of view of economy. Finally, the main conclusions of this paper are obtained, and further research directions are proposed.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU528.2

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