【摘要】：預(yù)制裝配式剪力墻結(jié)構(gòu)是在建筑工業(yè)化形勢下的一種預(yù)制裝配式結(jié)構(gòu)體系,通過工廠預(yù)制墻板,在現(xiàn)場采用水平接縫和豎向接縫連接裝配成一體而形成的抗側(cè)力結(jié)構(gòu)體系。而接縫性能是影響預(yù)制裝配式剪力墻結(jié)構(gòu)體系整體性能的關(guān)鍵,目前對豎向作用下水平接縫結(jié)構(gòu)體系抗震性能的研究成果較為系統(tǒng),提出了不少連接方式,但工程實際中水平作用下存在墻體受拉不利工況下水平接縫裝配式剪力墻結(jié)構(gòu)體系抗震性能的研究成果匱乏,因此,對其進行研究就顯得尤為必要。本文基于現(xiàn)有的相關(guān)研究成果,提出一種采用連接鋼板、高強穿螺栓連接相鄰層預(yù)制墻板的新型干式連接方式,為系統(tǒng)研究該連接對結(jié)構(gòu)連體系受力性能的影響規(guī)律,以高強螺栓的間距作為設(shè)計參數(shù),設(shè)計了3個預(yù)制試件,同時設(shè)計1個整體現(xiàn)澆試件作為對比試件。采用有限元軟件ABAQUS進行建模,且通過相關(guān)試驗對其合理性進行驗證,并進一步在對本文設(shè)計試件進行系列數(shù)值模擬,分析相關(guān)參數(shù)及不同豎向作用對試件承載力、抗側(cè)剛度退化規(guī)律、延性與耗能能力等抗震性能的影響規(guī)律,然后對節(jié)點的傳力路徑進行理論分析,與有限元模擬結(jié)果對比。研究結(jié)果表明:試件外在作用豎向拉力對試件抗震性能影響較為明顯;水平接縫鋼板組合連接的預(yù)制裝配式剪力墻整體性較好,其抗震性能接近于整體現(xiàn)澆試件;本文提出的新型鋼板組合連接方案可行,傳力路徑明確,連接件的強度有足夠的富余;相對整體現(xiàn)澆試件,新型鋼板組合連接的預(yù)制裝配式試件在達到剪力墻結(jié)構(gòu)大震層間側(cè)移角限值1/120時,剛度下降較多,但其承載力仍未出現(xiàn)明顯下降,試件的延性與耗能能力較好�，F(xiàn)有混凝土本構(gòu)難以真實反映混凝土在拉壓往復(fù)作用下的的疏松脫落,以致模擬滯回曲線較為飽滿,與試驗結(jié)果存在一定偏差,但研究得出的結(jié)論能基本反映出剪力墻結(jié)構(gòu)的性能,為其工程應(yīng)用提供了理論參考。此外,建議在后續(xù)試驗基礎(chǔ)上進一步提出更合理的簡化措施加以完善,以便更準確、系統(tǒng)模擬類似試件的抗震性能。
[Abstract]:The prefabricated shear wall structure is a kind of prefabricated structure system under the situation of building industrialization. Through the factory precast wall board, the horizontal joint and vertical joint are used in the field to assemble the anti-lateral force structure system. The joint performance is the key to affect the whole performance of prefabricated shear wall structure system. At present, the research results of seismic performance of horizontal joint structure system under vertical action are more systematic, and many connection modes are proposed. However, the seismic performance of horizontal joint assembled shear wall structure system under the unfavorable condition of wall tension under horizontal action in engineering practice is scarce, so it is necessary to study the seismic behavior of horizontal joint assembly shear wall structure system. Based on the existing research results, this paper proposes a new type of dry connection method, which is connected with steel plate and high strength bolt connecting adjacent layer precast wall board, and studies systematically the influence of the connection on the mechanical performance of the connecting structure. Taking the spacing of high strength bolts as the design parameter, three prefabricated specimens were designed, and a whole cast-in-place specimen was designed as a contrast specimen. The finite element software ABAQUS is used to model the model, and the rationality of the model is verified by relevant tests. Furthermore, a series of numerical simulation is carried out to analyze the bearing capacity of the specimens under different vertical actions and related parameters. The effects of lateral stiffness degradation, ductility and energy dissipation capacity on seismic performance are studied. Then the load transfer path of the joints is analyzed theoretically and compared with the results of finite element simulation. The results show that the external force of the specimen has obvious effect on the seismic performance of the specimen, and the precast assembled shear wall with horizontal joint steel plate composite connection has better overall seismic performance, and its seismic performance is close to that of the whole cast-in-place test piece. The new steel plate composite connection scheme presented in this paper is feasible, the force transfer path is clear, and the strength of the joint has enough surplus. Compared with the whole cast-in-situ specimens, the stiffness of prefabricated specimens with new steel plate composite connections decreases more when the limit of lateral displacement angle of shear wall structures reaches 1 / 120, but the bearing capacity does not decrease obviously. The ductility and energy dissipation ability of the specimen are better. The existing constitutive structure of concrete can not truly reflect the loose fall of concrete under the action of tension and compression, so that the simulated hysteretic curve is full, which is different from the test results. But the conclusion of the study can basically reflect the performance of shear wall structure and provide a theoretical reference for its engineering application. In addition, it is suggested that more reasonable simplified measures should be put forward on the basis of subsequent tests, so that the seismic behavior of similar specimens can be simulated more accurately and systematically.
【學(xué)位授予單位】：蘇州科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU398.2

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