本文選題：氣膜鋼筋混凝土　切入點(diǎn)：穹頂結(jié)構(gòu)　出處：《河北工程大學(xué)》2017年碩士論文

【摘要】：隨著國民經(jīng)濟(jì)的發(fā)展,在現(xiàn)代城市建筑結(jié)構(gòu)發(fā)展過程中,混凝土薄殼結(jié)構(gòu)發(fā)揮著相當(dāng)重要的作用,其中包括相當(dāng)多的體育場館、教堂、貨物倉庫等的建設(shè)中,它們都會(huì)選擇此種結(jié)構(gòu)形式。但是傳統(tǒng)的混凝土薄殼結(jié)構(gòu)也存在著一些不足,比如施工過程中模板工程量大,支模拆模較困難等。近年來,我國引進(jìn)了氣膜鋼筋混凝土穹頂薄殼結(jié)構(gòu),該類結(jié)構(gòu)成功克服了以上不足,具有許多傳統(tǒng)結(jié)構(gòu)無法比擬的技術(shù)優(yōu)點(diǎn)。目前,國內(nèi)對(duì)氣膜鋼筋混凝土穹頂結(jié)構(gòu)的研究尚處在起步階段,對(duì)其靜力性能和動(dòng)力性能的全面分析較少,因此對(duì)此類結(jié)構(gòu)的靜力性能與動(dòng)力性能研究是很有必要的。本文研究的主要內(nèi)容如下:以某直徑21m的氣膜鋼筋混凝土穹頂薄殼結(jié)構(gòu)設(shè)計(jì)成型狀態(tài)為研究背景,由于施工成型狀態(tài)結(jié)構(gòu)幾何形狀及倉壁壁厚均與設(shè)計(jì)狀態(tài)存在差異,分別以幾何形狀及倉壁壁厚為參數(shù),考察幾何形狀及倉壁壁厚變化對(duì)該類結(jié)構(gòu)靜力性能的影響。對(duì)氣膜鋼筋混凝土穹頂薄殼結(jié)構(gòu)進(jìn)行了動(dòng)力性能分析,首先對(duì)結(jié)構(gòu)進(jìn)行模態(tài)分析,得到結(jié)構(gòu)的振型形狀及周期。其次,對(duì)結(jié)構(gòu)進(jìn)行了多遇地震下的反應(yīng)譜分析,得到地震作用下,結(jié)構(gòu)的內(nèi)力及位移的分布規(guī)律。最后,分別分析了倉壁厚度及幾何形狀對(duì)結(jié)構(gòu)動(dòng)力特性、地震作用反應(yīng)的影響。對(duì)比某直徑21m的氣膜鋼筋混凝土穹頂薄殼結(jié)構(gòu)靜力試驗(yàn)結(jié)果、動(dòng)力特性試驗(yàn)結(jié)果與該結(jié)構(gòu)實(shí)際幾何尺寸有限元模擬結(jié)果。首先分析比較該結(jié)構(gòu)靜力加載過程中的內(nèi)力、位移變化,分析數(shù)據(jù)差別存在的原因;其次分析比較動(dòng)力試驗(yàn)結(jié)果與有限元模擬結(jié)果的差別。從目前已有的文獻(xiàn)來看,國內(nèi)外對(duì)氣膜鋼筋混凝土穹頂結(jié)構(gòu)的研究較少,而對(duì)其動(dòng)力性能的分析更少。本文綜合研究了氣膜鋼筋混凝土穹頂結(jié)構(gòu)的靜力及動(dòng)力性能,以期為該類結(jié)構(gòu)的設(shè)計(jì)與施工提供指導(dǎo)和借鑒。
[Abstract]:With the development of national economy, the thin concrete shell structure plays a very important role in the development of modern urban building structure, including a lot of stadiums, churches, goods warehouses, etc. They all choose this kind of structure form. But the traditional thin concrete shell structure also has some shortcomings, such as the large amount of formwork in the construction process, the difficulty of supporting the formwork to remove the formwork, etc. In recent years, The thin shell structure of air-film reinforced concrete dome has been introduced into China, which has successfully overcome the above shortcomings and has many technical advantages that cannot be compared with the traditional structure. In China, the research on the air-film reinforced concrete dome structure is still in its infancy, and the static and dynamic properties of the dome structure are seldom analyzed. Therefore, it is necessary to study the static and dynamic performance of this kind of structure. The main contents of this paper are as follows: the design and molding state of a thin dome structure with a diameter of 21 m is taken as the research background. Due to the difference between the geometric shape and the wall thickness of the structure and the design state, the geometric shape and the wall thickness of the silo wall are taken as the parameters respectively. The influence of geometric shape and wall thickness on the static behavior of this kind of structure is investigated. The dynamic behavior of thin shell structure with air-film reinforced concrete dome is analyzed. First, the modal analysis of the structure is carried out. The vibration shape and period of the structure are obtained. Secondly, the response spectrum of the structure under frequent earthquakes is analyzed, and the distribution law of internal force and displacement of the structure under earthquake action is obtained. The effects of the thickness and geometry of the silo wall on the dynamic characteristics of the structure and the seismic response are analyzed, and the static test results of a 21m diameter reinforced concrete dome structure with thin shell are compared. The dynamic characteristic test results are compared with the finite element simulation results of the actual geometric size of the structure. Firstly, the variation of internal force and displacement in the static loading process of the structure is analyzed and the reasons for the difference between the data are analyzed. Secondly, the difference between the dynamic test results and the finite element simulation results is analyzed. According to the existing literatures, there are few researches on the air-film reinforced concrete dome structure at home and abroad. In this paper, the static and dynamic performance of the air-film reinforced concrete dome structure is studied comprehensively, in order to provide guidance and reference for the design and construction of this kind of structure.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU398.9

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