钢板—混凝土组合剪力墙的抗震性能有限元分析

发布时间：2018-12-13 23:41

【摘要】：高层建筑结构对抗侧力构件的要求很高。随着高层建筑结构的迅速发展，各种不同的剪力墙形式应用而生，其中包括钢板—混凝土组合剪力墙。钢板—混凝土组合剪力墙综合了钢材和混凝土的受力特点，承载能力高，延性比和侧向刚度大、耗能能力强。目前，国内外研究钢板—混凝土组合剪力墙还不够详细和全面，同时缺乏足够的工程经验和计算理论，阻碍了它在工程中的应用。因此，系统全面地研究这种形式剪力墙的抗震性能是很有必要的。本文建立了钢板—混凝土组合剪力墙的有限元模型，并利用ABAQUS对其进行模拟分析，，研究了其在单调和循环荷载下的力学性能。首先，本文对ABAQUS中的损伤模型理论进行了简要的探讨，并结合新版混凝土结构设计规范确定了一种混凝土损伤塑性模型参数的计算方法。通过对比数值模拟和公式计算结果，验证给出的损伤塑性模型参数计算方法的正确性，为利用ABAQUS模拟钢板—混凝土组合剪力墙提供基础。其次，本文参考以往的研究资料，并根据规范中对剪力墙的设计要求，设计了一系列钢板—混凝土组合剪力墙构件，利用ABAQUS模拟分析钢板—混凝土组合剪力墙构件在单调荷载和循环荷载作用下的力学性能。绘制各剪力墙构件的承载力—水平位移的P-Δ关系曲线，通过承载能力、变形能力、延性比和滞回耗能等参数指标，分别评价钢板—混凝土组合剪力墙构件在单调荷载和循环荷载下的力学性能；研究构件高宽比、轴压比和混凝土强度等级对钢板—混凝土组合剪力墙抗震性能的影响；对比分析钢筋混凝土剪力墙、型钢混凝土剪力墙和钢板—混凝土组合剪力墙的抗震性能差异。最后，本文利用钢板—混凝土组合剪力墙的有限元模拟结果，汇总各构件的P-Δ曲线，并行无量纲化，通过线性回归分析，简单地拟合出了钢板—混凝土组合剪力墙恢复力模型中的骨架曲线。
[Abstract]:The requirement of high-rise building structure against lateral force is very high. With the rapid development of high-rise building structures, various shear wall forms are applied, including steel plate and concrete composite shear wall. The steel plate and concrete composite shear wall combines the mechanical characteristics of steel and concrete with high bearing capacity, large ductility ratio and lateral stiffness, and strong energy dissipation ability. At present, the research of steel plate concrete composite shear wall at home and abroad is not enough detailed and comprehensive, at the same time, it lacks enough engineering experience and calculation theory, which hinders its application in engineering. Therefore, it is necessary to study the seismic behavior of this kind of shear wall systematically and comprehensively. In this paper, the finite element model of steel plate concrete composite shear wall is established, and its mechanical properties under monotone and cyclic loads are studied by ABAQUS. Firstly, the theory of damage model in ABAQUS is briefly discussed, and a method of calculating the parameters of damage plastic model of concrete is established by combining with the new design code of concrete structure. By comparing the results of numerical simulation and formula calculation, this paper verifies the correctness of the proposed method for calculating the parameters of the damage plastic model, which provides the basis for simulating the composite shear wall of steel plate and concrete by using ABAQUS. Secondly, a series of steel plate and concrete composite shear wall members are designed according to the design requirements of shear wall in the code. The mechanical properties of steel plate and concrete composite shear wall members under monotonic and cyclic loads are analyzed by ABAQUS simulation. The P- 螖 relation curve of load-horizontal displacement of each shear wall member is drawn. The parameters such as load-carrying capacity, deformation capacity, ductility ratio and hysteretic energy consumption are obtained. The mechanical properties of steel plate-concrete composite shear wall members under monotonic and cyclic loads were evaluated respectively. The effects of aspect ratio, axial compression ratio and strength grade of concrete on seismic behavior of steel plate concrete composite shear wall are studied. The difference of seismic behavior of reinforced concrete shear wall, steel reinforced concrete shear wall and steel plate concrete composite shear wall is analyzed. Finally, using the finite element simulation results of steel plate and concrete composite shear walls, the P- 螖 curves of each component are summarized, and the parallel dimensionless curves are analyzed by linear regression analysis. The skeleton curve of the steel plate-concrete composite shear wall model is simply fitted.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9;TU352.11

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