本文選題：鋼筋套筒灌漿連接構(gòu)件 + 裝配式建筑��； 參考：《沈陽(yáng)建筑大學(xué)》2014年碩士論文

【摘要】：近年來(lái),科學(xué)技術(shù)的發(fā)展和不斷創(chuàng)新,極大地推動(dòng)了建筑業(yè)的迅猛發(fā)展,在施工現(xiàn)場(chǎng)進(jìn)行房屋組裝,徹底改變了傳統(tǒng)落后的房屋施工做法。隨著建筑工業(yè)化的發(fā)展,各國(guó)把建筑部件工廠預(yù)制化和施工裝配化,作為住宅產(chǎn)業(yè)現(xiàn)代化的重要標(biāo)致。裝配式建筑的發(fā)展將促進(jìn)建筑領(lǐng)域生產(chǎn)方式的巨大變革。降低能耗、保護(hù)生態(tài)與環(huán)境,使用新材料、應(yīng)用新工藝,提高工程質(zhì)量、提高工效,減少污染和浪費(fèi)、減少現(xiàn)場(chǎng)作業(yè),實(shí)現(xiàn)文明施工是當(dāng)前技術(shù)進(jìn)步的重要標(biāo)志。加強(qiáng)關(guān)鍵技術(shù)創(chuàng)新和系統(tǒng)體系集成,實(shí)現(xiàn)房屋建筑的產(chǎn)業(yè)化、多樣化、工業(yè)化,將是新世紀(jì)建筑業(yè)的發(fā)展趨勢(shì)。在裝配式建筑中,預(yù)制件之間的連接主要是通過(guò)套筒灌漿將鋼筋連接起來(lái),形成整體,共同抵抗外界的各種不利荷載。由于預(yù)制梁和預(yù)制柱是在工廠生產(chǎn)的,質(zhì)量容易保證：相比之下,各構(gòu)件的連接處顯得有些薄弱,會(huì)產(chǎn)生“強(qiáng)柱強(qiáng)梁弱節(jié)點(diǎn)”的不利結(jié)構(gòu)。節(jié)點(diǎn)破壞是裝配式建筑在地震中破壞主要形式之一。可見(jiàn)在裝配式建筑中,鋼筋套筒灌漿連接起著決定性的作用。本課題在國(guó)家科學(xué)自然基金項(xiàng)目(No.51278312)的大力支持下,采用ABAQUS有限元軟件對(duì)鋼筋套筒灌漿連接的靜力響應(yīng)進(jìn)行了詳細(xì)的有限元數(shù)值模擬研究。主要研究?jī)?nèi)容包括：(1)從混凝土大直徑受力鋼筋的連接角度,總結(jié)了受力鋼筋的幾種連接方法以及連接方式優(yōu)缺點(diǎn)。(2)根據(jù)鋼筋套筒灌漿連接的實(shí)際構(gòu)造,對(duì)鋼筋套筒灌漿連接建立在軸向靜力荷載作用下的數(shù)值模型。研究結(jié)果表明：在鋼筋和套筒之間荷載傳遞的主要方式是通過(guò)灌漿料形成的“燈傘狀”的環(huán)形受壓斜柱進(jìn)行荷載傳遞。(3)在上述鋼筋套筒灌漿連接有限元模型的基礎(chǔ)上,通過(guò)改變灌漿料與套筒之間的摩擦系數(shù)(套筒內(nèi)表面的粗糙程度)研究其對(duì)套筒連接鋼筋構(gòu)件力學(xué)性能的影響。研究表明：套筒與灌漿料之間的摩擦系數(shù)對(duì)套筒連接鋼筋構(gòu)件力學(xué)性能和約束能力幾乎沒(méi)有影響。(4)通過(guò)改變套筒肋間距這一參數(shù),研究結(jié)果表明：當(dāng)套筒內(nèi)肋間距在28mm～14mm范圍內(nèi)時(shí),灌漿料能夠有效地在鋼筋與套筒之間傳遞荷載。當(dāng)套筒內(nèi)肋間距過(guò)大時(shí),灌漿料受力不均勻,局部區(qū)域灌漿料的最大第三主應(yīng)力遠(yuǎn)遠(yuǎn)超出灌漿料抗壓強(qiáng)度；當(dāng)套筒內(nèi)肋間距過(guò)小時(shí),灌漿料通過(guò)剪切力的作用在鋼筋與套筒之間傳遞荷載,灌漿料易發(fā)生剪切破壞,甚至將鋼筋從套筒內(nèi)拔出。(5)建立套筒肋間距為14mmm的鋼筋套筒灌漿連接數(shù)值模型,研究灌漿料軸向抗壓強(qiáng)度這一因素對(duì)鋼筋套筒灌漿連接性能的影響。研究結(jié)果表明：隨著灌漿料軸心抗壓強(qiáng)的增加,灌漿料對(duì)鋼筋的約束程度逐漸增大,鋼筋位移和灌漿料最大第三主應(yīng)力也逐漸減小。
[Abstract]:In recent years, with the development and innovation of science and technology, the rapid development of the construction industry has been greatly promoted, housing assembly has been carried out on the construction site, and the traditional backward building construction practices have been completely changed. With the development of construction industrialization, the prefabrication and construction assembly of building parts factory are regarded as the important Peugeot in the modernization of housing industry. The development of prefabricated architecture will promote the great transformation of production mode in the field of architecture. Reducing energy consumption, protecting ecology and environment, using new materials, applying new technology, improving engineering quality, improving work efficiency, reducing pollution and waste, reducing field operation and realizing civilized construction are important signs of current technological progress. Strengthening the innovation of key technology and the integration of system, realizing the industrialization, diversification and industrialization of housing construction will be the development trend of the construction industry in the new century. In the assembly building, the connection between prefabricated parts is mainly connected by sleeve grouting to form a whole and resist all kinds of unfavorable loads. Because prefabricated beams and prefabricated columns are produced in the factory, the quality is easy to guarantee: by contrast, the joints of each component are weak, which will produce the disadvantage of "strong columns, strong beams and weak joints". Node failure is one of the main failure forms of prefabricated buildings in earthquake. It can be seen that the reinforced sleeve grouting connection plays a decisive role in the assembly building. With the support of National Science and Nature Fund Project No. 51278312, the static response of reinforced sleeve grouting connection is studied by using ABAQUS finite element software in detail. The main research contents include: (1) from the angle of connection of concrete reinforced bar with large diameter stress, the paper summarizes several connection methods and advantages and disadvantages of connection method) according to the actual construction of reinforced sleeve grouting connection, The numerical model of reinforced sleeve grouting connection under axial static load is established. The results show that the main way of load transfer between steel bar and sleeve is to transfer the load through "lamp umbrella-shaped" circular oblique column formed by grouting material) on the basis of the above finite element model of reinforcement sleeve grouting connection. By changing the friction coefficient between the grouting material and the sleeve (the roughness of the inner surface of the sleeve), the effect of the friction coefficient on the mechanical properties of the steel members connected with the sleeve is studied. The results show that the friction coefficient between the sleeve and the grouting material has little effect on the mechanical properties and restraint ability of the steel members connected with the sleeve. The results show that when the inner rib spacing of the sleeve is within the range of 28mm~14mm, the grouting material can effectively transfer the load between the steel bar and the sleeve. When the inner rib spacing of the sleeve is too large, the grouting material is subjected to uneven force, the maximum third principal stress of the grouting material in the local area is far more than the compressive strength of the grouting material, and when the inner rib spacing of the sleeve is too small, The grouting material transfers the load between the steel bar and the sleeve through the shear force, and the grouting material is prone to shear failure. Even the steel bar is pulled out from the sleeve. (5) the numerical model of the grouting connection of the steel bar sleeve with 14mmm spacing is established. The influence of axial compressive strength of grouting material on the connection performance of reinforced sleeve grouting was studied. The results show that with the increase of the axial compressive strength of the grouting material, the restraint degree of the grouting material increases gradually, and the displacement of the steel bar and the maximum third principal stress of the grouting material decrease gradually.
【學(xué)位授予單位】：沈陽(yáng)建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TU756

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