【摘要】：超高層建筑在我國的應(yīng)用越來越多，超高層建筑通常利用剪力墻或剪力墻組成的筒體來抵抗側(cè)向力。為保證混凝土剪力墻的延性要求，若混凝土等級采用C60以下普通混凝土，墻厚會過厚，還需要采用較高的配鋼率來滿足軸壓比的要求，，給設(shè)計、施工帶來較大難度。因此需要利用高強(qiáng)混凝土組合結(jié)構(gòu)來滿足現(xiàn)在超高層建筑的需求。 本文利用鋼結(jié)構(gòu)和鋼筋混凝土結(jié)構(gòu)的優(yōu)點(diǎn)，設(shè)計并試驗了一種C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻，通過試驗研究結(jié)合有限元模擬進(jìn)行了探討，本文的研究工作主要包括： （1）設(shè)計制作了試驗參數(shù)為：內(nèi)置鋼板配鋼率、剪力墻墻身厚度、端柱鋼板配鋼率、剪力墻墻身配筋率的11個C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻試件，通過低周往復(fù)荷載加載，研究該組合剪力墻在低周往復(fù)荷載作用下的抗震性能。 （2）對試驗結(jié)果進(jìn)行詳盡的分析，從試件的破壞形態(tài)、滯回曲線、骨架曲線、鋼板和鋼筋的應(yīng)變、延性系數(shù)、剛度和強(qiáng)度退化、能量耗散能力等方面對試驗結(jié)果進(jìn)行分析。結(jié)果表明：各個試件最終破壞形態(tài)均是底部墻體的鋼板受壓發(fā)生屈曲，混凝土被壓碎，呈現(xiàn)出壓彎破壞的特征。隨著內(nèi)置鋼板配鋼率的增大，C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻的承載力提高明顯、但延性以及變形能力提高緩慢。墻身厚度以及邊緣構(gòu)件對組合剪力墻的性能影響較大，能夠明顯的提高C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻的承載力、耗能能力、延性以及使得剛度退化緩慢。墻身配筋率的大小對試件的延性、耗能能力和承載力等性能的影響不明顯。指出了C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻是一種具有良好抗震性能的組合剪力墻。 （3）利用有限元分析軟件ABAQUS對試驗試件進(jìn)行了有限元分析，分析結(jié)果和試驗結(jié)果吻合良好。在此基礎(chǔ)上利用有限元軟件進(jìn)一步分析了內(nèi)置鋼板配鋼率、剪力墻墻身厚度、端柱鋼板配鋼率、剪力墻墻身配筋率等各個參數(shù)對組合剪力墻的性能的影響。 （4）在參數(shù)分析基礎(chǔ)上，對C80高強(qiáng)混凝土內(nèi)置鋼板組合剪力墻的設(shè)計中若干問題進(jìn)行了分析研究，分析了該組合剪力墻的幾種限制條件，同時給出了實際工程中對該類型組合剪力墻的設(shè)計建議。
[Abstract]:Super high-rise buildings are more and more widely used in our country. Shear walls or shear walls are usually used to resist lateral forces in super high-rise buildings. In order to ensure the ductility requirement of concrete shear wall, if the concrete grade is ordinary concrete below C60, the wall thickness will be too thick, and the high steel ratio should be adopted to meet the requirement of axial compression ratio, which will bring great difficulty to design and construction. Therefore, it is necessary to use high-strength concrete composite structure to meet the needs of high-rise buildings. Based on the advantages of steel structure and reinforced concrete structure, a kind of C80 high strength concrete composite shear wall with steel plate is designed and tested. The main research work of this paper is as follows: (1) the test parameters are as follows: the ratio of steel distribution of built-in steel plate, the thickness of shear wall, the steel distribution ratio of end column steel plate, The shear wall specimens with the reinforcement ratio of 11 C80 high strength concrete embedded steel composite shear wall specimens are loaded under low cycle reciprocating loads. The seismic behavior of the composite shear wall under low cyclic reciprocating load is studied. (2) the test results are analyzed in detail, including the failure form, hysteretic curve, skeleton curve, strain and ductility coefficient of steel plate and steel bar. The experimental results are analyzed from the aspects of stiffness and strength degradation, energy dissipation ability and so on. The results show that the ultimate failure pattern of each specimen is the buckling of the steel plate at the bottom of the wall and the crushing of concrete, showing the characteristics of compression and bending failure. The bearing capacity of C80 high strength concrete composite shear wall increases obviously, but the ductility and deformability increase slowly with the increase of steel plate ratio. The thickness of the wall body and the edge member have great influence on the performance of the composite shear wall, which can obviously improve the bearing capacity, energy dissipation capacity, ductility and stiffness degradation of the C80 high strength concrete composite shear wall. The effect of reinforcement ratio on ductility, energy dissipation and bearing capacity is not obvious. It is pointed out that C80 high strength concrete composite shear wall with steel plate is a kind of composite shear wall with good seismic performance. (3) finite element analysis of test specimens is carried out by using finite element analysis software ABAQUS. The analytical results are in good agreement with the experimental results. On the basis of this, the steel distribution ratio of built-in steel plate, the thickness of shear wall body and the steel distribution ratio of end column steel plate are further analyzed by using finite element software. The influence of various parameters, such as reinforcement ratio of shear wall body, on the performance of composite shear wall. (4) on the basis of parameter analysis, some problems in the design of C80 high strength concrete inner steel composite shear wall are analyzed and studied. Several limiting conditions of the composite shear wall are analyzed, and the design suggestions for this type of composite shear wall in practical engineering are given.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU398;TU352.11

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