【摘要】：厚板的厚度一般不是由彎曲承載力決定,而是由厚板的抗沖切承載力控制。采取有效措施,提高厚板的抗沖切承載力,減小厚板的厚度(質(zhì)量),有利于帶厚板高層建筑結(jié)構(gòu)的抗震性能。本文分別利用薄板理論、厚板理論(Ressiner中厚板理論)以及ABAQUS有限元分析軟件分析四邊簡支板中心點(diǎn)的彎矩和撓度等的變化規(guī)律,對薄板以及厚板的受力性能進(jìn)行分析。為研究提高厚板的抗沖切承載力的配筋形式,本文探索一種新的抗沖切形式—空間鋼構(gòu)架。為研究鋼筋混凝土簡支厚板的抗沖切性能,采用ABAQUS有限元軟件,建立了鋼筋混凝土簡支厚板抗沖切的非線性有限元模型,在非線性有限元模型驗(yàn)證的基礎(chǔ)上,分別對配置抗沖切箍筋、空間鋼構(gòu)架、抗沖切錨栓以及型鋼剪力架的鋼筋混凝土厚板的沖切性能進(jìn)行了比較分析,并分析了空間鋼構(gòu)架綴條截面面積和間距、設(shè)置斜腹桿等參數(shù)對鋼筋混凝土厚板抗沖切性能的影響。分析結(jié)果表明:抗沖切箍筋、空間鋼構(gòu)架、抗沖切錨栓以及型鋼剪力架等配筋形式均能夠有效提高鋼筋混凝土厚板的抗沖切承載力,其中配置空間鋼構(gòu)架對鋼筋混凝土厚板抗沖切承載力提高程度最為顯著�？臻g鋼構(gòu)架對鋼筋混凝土厚板抗沖切承載力的影響因素可以用空間鋼構(gòu)架混凝土綜合影響系數(shù)s?來綜合考慮。隨著綜合影響系數(shù)s?增大,試件的抗沖切極限承載力近似呈線性地增大。這些結(jié)論可以為空間鋼構(gòu)架在鋼筋混凝土中厚板中的應(yīng)用提供技術(shù)依據(jù)。
[Abstract]:The thickness of thick plate is not usually determined by bending capacity, but controlled by punching shear capacity of thick plate. Effective measures are taken to improve the punching shear capacity of thick plates and to reduce the thickness (quality) of thick plates, which is beneficial to the seismic performance of tall buildings with thick plates. In this paper, thin plate theory, thick plate theory (Ressiner medium thick plate theory) and ABAQUS finite element analysis software are used to analyze the bending moment and deflection of the center point of the simply supported plate on the four sides, and the mechanical properties of the thin plate and thick plate are analyzed. In order to study the reinforcement form to improve the punching shear capacity of thick plate, this paper explores a new punching shear form-spatial steel frame. In order to study the impact shear behavior of reinforced concrete simply supported thick slab, a nonlinear finite element model of reinforced concrete simple supported thick slab is established by using ABAQUS finite element software. The nonlinear finite element model is verified on the basis of nonlinear finite element model. The punching behavior of reinforced concrete thick slabs with punching stirrups, spatial steel frames, punch-shear anchors and steel shear frames are compared and analyzed, and the section area and spacing of spatial steel frames are analyzed. The influence of the parameters such as inclined web bar on the punching shear behavior of reinforced concrete thick slab. The results show that the punching shear capacity of reinforced concrete thick slab can be improved effectively by reinforcement such as punching stirrups, space steel frame, punching shear bolt and steel shear frame. The steel frame with space is the most significant to enhance the punching shear capacity of reinforced concrete thick slab. The influence factors of spatial steel frame on the punching shear capacity of reinforced concrete thick slab can be used as the comprehensive influence coefficient of space steel frame concrete s? To consider. With the comprehensive influence coefficient s? The ultimate bearing capacity of punching shear increases linearly when the specimen increases. These conclusions can provide technical basis for the application of space steel frame in reinforced concrete plate.
【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】：TU398.9

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