本文選題：陶粒泡沫混凝土 + 組合板　； 參考：《中國礦業(yè)大學(xué)》2014年碩士論文

【摘要】：本文是江蘇省科技支撐計劃“預(yù)應(yīng)力拼裝預(yù)制輕骨料活動板房研發(fā)”項目（編號：BE2010643）的研究子項，旨在研發(fā)適用于輕型預(yù)制板房的新型輕質(zhì)混凝土板材。由于泡沫混凝土具有輕質(zhì)、保溫、隔音和耐火等優(yōu)點，本文以泡沫混凝土為基材，分別與鋼筋混凝土和鋼材組合，設(shè)計制作了鋼筋混凝土-陶粒泡沫混凝土組合板和鋼-陶粒泡沫混凝土組合板，并對它們進(jìn)行了受彎試驗研究，給出了它們在設(shè)計計算和工程應(yīng)用方面的建議。 鋼筋混凝土-陶粒泡沫混凝土組合板根據(jù)組合層數(shù)不同分為單層板、雙層板和三層板。設(shè)計和制作了11塊足尺試件，并對它們進(jìn)行受彎試驗，研究各種組合板的特點和性能，推導(dǎo)得出此類組合板的受彎承載力和開裂荷載的計算公式，，并與實測值比較，驗證了計算公式的可靠性和適用性。研究結(jié)果表明：現(xiàn)澆疊合制成且不設(shè)置抗剪件的組合板，在加載過程中，泡沫混凝土與普通混凝土能協(xié)同工作，疊合界面不存在脫開現(xiàn)象；泡沫混凝土位于受拉區(qū)的組合板開裂嚴(yán)重，易發(fā)生脆性破壞，不建議在工程中應(yīng)用；泡沫混凝土位于受壓區(qū)的雙層板力學(xué)性能較好，適合在現(xiàn)澆板或疊合板中應(yīng)用；泡沫混凝土位于中間層的三層板力學(xué)性能優(yōu)越，承載力與同等配筋率的普通鋼筋混凝土板相當(dāng)，且能有效減輕自重達(dá)40%，適合作為預(yù)制板材使用。 鋼-陶粒泡沫混凝土組合板根據(jù)組合鋼材分為壓型鋼板-泡沫混凝土組合板、彩鋼板-泡沫混凝土組合板和鋼邊框-泡沫混凝土組合板。設(shè)計和制作了14塊足尺試件，并對它們進(jìn)行受彎試驗，研究各類組合板的破壞模式和力學(xué)性能，推導(dǎo)得出閉口式壓型鋼板-泡沫混凝土組合板和鋼邊框-泡沫混凝土組合板的受彎承載力公式。研究結(jié)果表明：抗剪連接件設(shè)置不足時，壓型鋼板-泡沫混凝土組合板易發(fā)生縱向剪切粘結(jié)破壞；BD閉口式壓型鋼板與泡沫混凝土組合可以有效發(fā)揮各自特點，在減輕自重的同時具有較高的承載力和剛度；彩鋼板夾芯板可以采用文中的焊接豎向短鋼筋或鋼筋網(wǎng)架的方式作為連接件，在連接可靠的前提下，彩鋼板能與配筋泡沫混凝土芯板協(xié)同受力，有效提高承載力，適合在預(yù)制板中應(yīng)用；鋼邊框-泡沫混凝土組合板力學(xué)性能優(yōu)越，泡沫混凝土的填充使得組合板相較于純鋼邊框可以提高承載力達(dá)75%，且尺寸規(guī)則，制作工藝簡單，可以采用文中推導(dǎo)的受彎承載力公式進(jìn)行設(shè)計計算，適合作為輕質(zhì)高強(qiáng)預(yù)制板材使用。
[Abstract]:This paper is a research item of Jiangsu Science and Technology support Project "Research and Development of Prestressed prefabricated Light aggregate moving Plate House" (No.: Be2010643), which aims to develop new lightweight concrete plate suitable for light prefabricated board house. Because foam concrete has the advantages of light weight, heat preservation, sound insulation and fire resistance, the foam concrete is used as the base material, which is combined with reinforced concrete and steel, respectively. The reinforced concrete-ceramsite foam concrete composite slab and steel-ceramsite foam concrete composite slab are designed and manufactured. The bending test of them is carried out, and some suggestions on their design calculation and engineering application are given. The composite slab of reinforced concrete and ceramsite foam concrete is divided into single layer slab, double layer slab and three layer slab according to the number of composite layers. Eleven full-scale specimens were designed and made, and the bending tests were carried out to study the characteristics and performance of various composite plates. The formulas for calculating the flexural capacity and cracking load of the composite plates were derived and compared with the measured values. The reliability and applicability of the formula are verified. The results show that the composite slabs made of cast-in-place composite without shear resistance can work together with ordinary concrete in the process of loading, and the superimposed interface does not exist the phenomenon of stripping. The composite slab of foam concrete located in the tensile zone has serious cracking and brittle failure, so it is not recommended to be used in engineering, and the double-layer slab with foam concrete located in the compression zone has better mechanical properties, which is suitable for application in cast-in-situ or composite slab. The mechanical properties of foamed concrete in the middle layer are superior, the bearing capacity is equal to that of the common reinforced concrete slab with the same reinforcement ratio, and the self-weight can be effectively reduced to 40%, which is suitable for use as prefabricated slab. The steel-ceramsite foam concrete composite slab is divided into profiled steel plate and foam concrete composite slab, color steel plate foam concrete composite slab and steel border frame foam concrete composite slab. A total of 14 full-scale specimens were designed and made, and the bending tests were carried out to study the failure modes and mechanical properties of various composite plates. The formulas of flexural bearing capacity of closed profiled steel sheet-foam concrete composite slab and steel border-foam concrete composite slab are derived. The results show that when the shear joint is not set enough, the combination of steel sheet and foam concrete can give full play to the characteristics of the composite slab, which is prone to the longitudinal shear bond failure and the combination of BD closed profiled steel plate and foam concrete. The sandwich panel of colored steel plate can be used as the connecting piece by welding the short vertical steel bar or the grid frame of the steel bar in this paper, under the premise of the reliable connection, the bearing capacity and stiffness of the sandwich plate can be improved by reducing the weight of the steel plate at the same time. The color steel plate can work together with reinforced foam concrete core board to effectively improve the bearing capacity, which is suitable for application in prefabricated board, and the steel border concrete composite plate has superior mechanical properties. The filling of foamed concrete makes the composite slab can increase the bearing capacity to 75% compared with the pure steel frame, and the size is regular, the manufacturing process is simple, and the bending bearing capacity formula derived in this paper can be used to design and calculate. It is suitable for use as light weight and high strength prefabricated sheet.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU528

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