本文選題：鋼筋混凝土空腹樓板 + 四邊簡支板　； 參考：《華中科技大學(xué)》2013年碩士論文

【摘要】：鋼筋混凝土空腹樓板是在板內(nèi)沿板面方向有規(guī)律的填入大量小尺寸箱體內(nèi)膜而形成蜂窩式孔洞結(jié)構(gòu)的一種新型現(xiàn)澆空心板，在大開間、大柱網(wǎng)建筑的樓蓋體系中得到了較為廣泛的應(yīng)用。目前不少學(xué)者及科研單位對其受力性能做過探究，但對該類型板的受力機(jī)理以及各組成部分的力學(xué)特性仍然缺少較為系統(tǒng)的分析，本文試圖在這方面進(jìn)行一些研究。 論文總結(jié)了工程中常見的幾種樓板結(jié)構(gòu)形式，并簡要介紹了國內(nèi)現(xiàn)行的空腹樓板的計算理論。以ANSYS有限元分析軟件為工具對箱型芯�？崭鬼虐暹M(jìn)行建模計算，在計算時考慮鋼筋與混凝土材料的非線性，對頂板施加均布荷載直至其破壞。分別調(diào)整板底配筋量、頂板厚度、肋寬、肋的排列方向，得出各狀態(tài)下的荷載-撓度曲線，并進(jìn)行了分析對比，找出板體各部分間的聯(lián)系及其對板體承載力、剛度的影響，說明作用機(jī)理，提出優(yōu)化措施。最后，對帶底板與不帶底板空腹砼板的受力機(jī)理進(jìn)行簡要對比分析，說明兩類空腹板的共同點，并研究了支撐狀況對板體承載力與剛度的影響。 研究表明：空腹樓板在力學(xué)性能上更接近于實心板，頂板、肋梁、底板各自成整體工作，表現(xiàn)出夾層板的工作特性；頂板厚度與板底最適配筋率存在正相關(guān)，，但頂板太薄時，板的力學(xué)性能會明顯下降，混凝土澆筑通道能夠有效緩解此現(xiàn)象；與密肋樓板不同，空腹板中梁肋的擺放方向不會對板的受力有明顯影響；在四邊簡支情況下底板的設(shè)置與否并不是控制空腹板受力的主要因素。
[Abstract]:Reinforced concrete hollow slab is a new type of cast-in-place hollow slab, which is filled regularly with a large number of small box lining along the slab surface and forms a honeycomb hole structure. The floor system of large column net building has been widely used. At present, many scholars and scientific research institutions have studied the mechanical properties of the plate, but the mechanical mechanism of the plate and the mechanical properties of each component are still lack of systematic analysis. This paper attempts to do some research in this area. This paper summarizes several common floor structure forms in engineering, and briefly introduces the current calculation theory of fasting floor in China. The finite element analysis software ANSYS is used to model and calculate the hollow concrete slab of box core mold. The nonlinear behavior of steel bar and concrete material is taken into account in the calculation, and the roof is subjected to uniform load until it is destroyed. The load-deflection curves under various states are obtained by adjusting the amount of reinforcement at the bottom of the plate, the thickness of the roof, the width of the rib and the direction of arrangement of the ribs, and the analysis and comparison are made to find out the relationship between the various parts of the slab and the influence on the bearing capacity and stiffness of the slab. The mechanism of action is explained and the optimization measures are put forward. Finally, the stress mechanism of the hollow concrete slab with and without the floor is compared and analyzed briefly, the common ground of the two kinds of hollow slab is explained, and the influence of the bracing condition on the bearing capacity and stiffness of the slab is studied. The results show that the mechanical properties of the hollow floor are closer to that of the solid slab, roof, rib beam and floor, and show the working characteristics of the sandwich plate, the thickness of the roof is positively correlated with the optimum reinforcement ratio of the slab, but the thickness of the roof is too thin. The mechanical properties of the slab will decrease obviously, the concrete pouring channel can effectively alleviate this phenomenon, and unlike the multi-ribbed slab, the direction of the beam rib in the hollow slab will not have a significant effect on the stress of the slab. The setting or not of the bottom plate is not the main factor to control the stress of the hollow plate under the condition of simple support on the four sides.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU375.2

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