方钢管混凝土框架—斜加劲薄钢板剪力墙的力学性能研究

发布时间：2018-04-12 06:36

本文选题：方钢管混凝土框架 + 斜加劲薄钢板剪力墙　；参考：《西安建筑科技大学》2013年硕士论文

【摘要】：钢板剪力墙是一种经济有效的水平抗侧力构件。与传统的钢筋混凝土剪力墙相比，具有自重轻；减小基础尺寸和地震作用；施工速度快；增加使用空间等优点，在多、高层建筑中得到越来越广泛的应用。非加劲薄钢板剪力墙的滞回曲线在零位移附近存在“捏缩”现象，，且柱子要承受较大拉力带作用，容易导致柱子过早破坏，为了解决上述问题，本文提出了方钢管混凝土框架-斜加劲薄钢板剪力墙。利用大型通用有限元软件ABAQUS进行数值计算，结合理论分析，研究了方钢管混凝土框架-斜加劲薄钢板剪力墙的抗震性能。 AISC给出了钢板剪力墙中梁剪力计算公式，但未考虑作用在梁上的拉力带水平分量对梁产生的剪力作用。本文基于钢板剪力墙理想破坏模式，分析了中间梁所受剪力，对AISC提出的剪力计算公式进行了修正，提出了中梁剪力近似计算公式，采用大型通用有限元软件ABAQUS验证了计算方法的可靠性。通过理论分析和有限元计算，分析了钢板剪力墙的受力过程，研究了剪力分配以及内填板与周边框架之间的相互作用。结果表明，内填板在层间位移角0.17%时出现初始屈服，在层间位移角0.51%时基本完全屈服，周边框架出现初始屈服。利用有限元软件对斜加劲钢板墙的抗震性能进行了分析，研究了肋板刚度比、内填板高厚比、轴压比、柱子刚度等对方钢管混凝土框架-斜加劲薄钢板剪力墙滞回曲线和耗能性能的影响，提出了适合于方钢管混凝土框架-斜加劲薄钢板剪力墙的恢复力模型。钢板剪力墙的传统设计方法假定由内填板承担所有的层间剪力，由于忽略边缘构件屈服时所提供的抵抗力，极限状态下边缘构件将为钢板墙提供超过水平荷载设计值的抵抗力。尽管这种设计方法对钢板剪力墙抗震性能起着有利的作用，但目前尚没有表达周边框架所提供的超强抵抗力的通用方式。本文基于钢板剪力墙塑性分析，提出了利用周边框架屈服时所提供的抵抗力的设计过程；利用有限元软件ABAQUS6.10进行了非线性分析。结果表明，本文所提出的钢板剪力墙设计方法，既能满足承载力的要求，而且具有良好的经济性。
[Abstract]:Steel plate shear wall is an economical and effective horizontal lateral force resistant member.Compared with the traditional reinforced concrete shear wall, it has many advantages, such as light weight, reducing foundation size and earthquake action, fast construction speed, increasing use space and so on. It has been more and more widely used in high-rise buildings.The hysteretic curve of non-stiffened thin steel plate shear wall has the phenomenon of "pinch" near zero displacement, and the column has to bear the action of larger tension band, which will easily lead to premature destruction of the column. In order to solve the above problem,In this paper, a concrete filled square steel tube frame-inclined stiffened steel sheet shear wall is presented.The seismic behavior of concrete-filled square steel tube frame and inclined stiffened steel plate shear wall is studied by using the finite element software ABAQUS and theoretical analysis.AISC gives the calculation formula of beam shear force in steel plate shear wall, but does not consider the shear force caused by the horizontal component of the tension band on the beam.In this paper, based on the ideal failure mode of steel plate shear wall, the shear force of the middle beam is analyzed, the formula of shear force calculated by AISC is modified, and the approximate formula of shear force of middle beam is put forward.The reliability of the method is verified by using a large universal finite element software ABAQUS.Through theoretical analysis and finite element calculation, the stress process of steel plate shear wall is analyzed, and the shear force distribution and the interaction between the inner filling plate and the surrounding frame are studied.The results show that the initial yield occurs at the interstory displacement angle of 0.17, the initial yield occurs at the interstory displacement angle of 0.51and the initial yield occurs at the peripheral frame.The seismic behavior of inclined stiffened steel plate wall is analyzed by using finite element software. The stiffness ratio of ribbed plate, the ratio of height to thickness of inner filling plate, the ratio of axial compression to axial compression are studied.The effects of column stiffness on hysteretic curve and energy dissipation performance of concrete filled steel tubular frame-oblique stiffened thin steel plate shear wall are discussed. A restoring force model suitable for square steel tube concrete frame and oblique stiffened thin steel plate shear wall is proposed.The traditional design method of steel plate shear wall assumes that all the interstory shear forces are borne by the inner fill. Because of ignoring the resistance provided by the edge member when yielding, the edge member in the limit state will provide the steel plate wall with resistance exceeding the design value of the horizontal load.Although this design method is beneficial to the seismic behavior of steel plate shear wall, there is no universal way to express the super resistance provided by the surrounding frame.Based on the plastic analysis of steel plate shear wall, this paper presents the design process of resistance provided by using the peripheral frame when yielding, and uses the finite element software ABAQUS6.10 to carry out nonlinear analysis.The results show that the design method of steel plate shear wall presented in this paper can not only meet the requirements of bearing capacity, but also have good economy.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9

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