本文選題：沿空留巷 + 巷旁支護(hù)�。� 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：沿空留巷巷旁裝配隔離墻大尺寸砌塊能夠?qū)崿F(xiàn)機(jī)械化施工,又有良好的施工效率,在工程應(yīng)用中具有很多優(yōu)越性。為了克服實(shí)心大尺寸砌塊的重量因素,本文以大尺寸砌塊中的實(shí)心砌塊、空心砌塊、空心充填砌塊以及空心尺寸變化等不同結(jié)構(gòu)形式的砌塊為研究對象,對砌塊的質(zhì)量與強(qiáng)度關(guān)系進(jìn)行研究。利用灰色理論在混凝土應(yīng)用上的適用性和灰色理論中GM(1,1)預(yù)測模型做為研究手段,通過對小尺寸砌塊的數(shù)據(jù)建立GM(1,1)模型,根據(jù)模型預(yù)測大尺寸砌塊的強(qiáng)度值和尺寸變化對強(qiáng)度的影響規(guī)律;以及利用ANSYS模擬手段,研究空心、充填空心等不同結(jié)構(gòu)形式、不同空心尺寸大小砌塊中質(zhì)量與強(qiáng)度關(guān)系。研究表明:大尺寸混凝土砌塊中尺寸的變化對砌塊強(qiáng)度的影響較小,尺寸在350mm-450mm之間時,尺寸對強(qiáng)度的影響較大;大尺寸混凝土砌塊在抗壓達(dá)到極限強(qiáng)度后還存在一定的承載力,并且隨著尺寸的增大殘余承載力大體呈線性增大;在利用ANSYS軟件對不同空心結(jié)構(gòu)和不同空心尺寸砌塊的非線性研究對比中,充填貫穿孔砌塊在受壓破壞中,質(zhì)量減小對抗壓強(qiáng)度影響較小,其中圓形貫穿孔充填砌塊的質(zhì)量減小45%而強(qiáng)度只減少了30%,方形貫穿孔充填砌塊的質(zhì)量減小50%而強(qiáng)度減少了40%,在空心充填砌塊的質(zhì)量與強(qiáng)度的關(guān)系中,空心尺寸在小于0.25時,強(qiáng)度有所提高,通過空心與空心充填砌塊的對比,空心不充填砌塊的質(zhì)量變化對抗壓強(qiáng)度影響較大,空心充填可以大大改善混凝土砌塊的受力性能。根據(jù)研究結(jié)果,文章建議在沿空留巷巷旁隔離墻支護(hù)中選用圓形貫穿孔充填砌塊,圓形孔尺寸根據(jù)所需強(qiáng)度選擇相應(yīng)的尺寸。
[Abstract]:In order to overcome the weight factors of solid large size block, the solid block in large size block, hollow block, hollow filling block, and the change of hollow size in large size block can be overcome by the mechanical construction and good construction efficiency. The relationship between the quality and strength of the block is studied with the same type of block as the research object. The applicability of the grey theory in the concrete application and the GM (1,1) prediction model in the grey theory are used as the research means. The model of GM (1,1) is established by the data of small size block, and the strength and ruler of the large size block are predicted according to the model. The influence of the change on the strength and the relationship between the mass and strength of different hollow size blocks, such as hollow, filling hollow, etc., are studied by means of ANSYS simulation. The study shows that the change of size in the large size concrete block has little effect on the strength of the block, and the size to the strength is between the size of 350mm-450mm and the strength of the size. The large size concrete block has a certain bearing capacity when the compressive strength reaches the ultimate strength, and the residual bearing capacity increases linearly with the increase of the size. In the nonlinear study of different hollow structures and different hollow size blocks with the ANSYS software, the filling perforation block is in the compression failure, The mass reduction has little effect on the compressive strength, in which the mass of the circular perforation filling block is reduced by 45% and the strength is only reduced by 30%. The mass of the square perforation filling block is reduced by 50% and the strength is reduced by 40%. In the relationship between the quality and strength of the hollow filling block, the strength of hollow size is less than 0.25, and the strength is improved by hollow and through hollow. Compared with hollow filling block, the quality change of hollow non filling block has great influence on the compressive strength. Hollow filling can greatly improve the mechanical properties of concrete block. According to the results of the study, it is suggested that the circular perforation fill block is selected in the side retaining wall support in the alley along the goaf, and the size of the circular hole is selected according to the required strength. The size should be.

【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD353

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