短肢剪力墙作为一种新的住宅构件,近年来被广泛研究.为了研究再生混凝土剪力墙的抗震性能,首先对所选再生混凝土材料进行了立方体抗压强度、轴心抗压强度、弹性模量及应力-应变关系的测定试验,并基于再生混凝土的性能制成了再生混凝土T形短肢剪力墙模型.通过ABAQUS有限元软件对其进行了低周往复荷载作用下的结构滞回性能分析.研究表明:再生混凝土T形短肢剪力墙的滞回性能及延性性能效果好,有利于抗震.

Recycled concrete as a renewable resource has beenr widely used in recent years,on the basis of adding steel fibers and tank fiber to make performance-enhanced vecycled concrete,safety and reliability of the structure may be further guaranteed.In this paper,using the finite element software ABAQUS,the low-cyclic reversed loading tests analysis of three recycled concrete frame joints with different hybrid fiber content of 0,0.5％,1％were conducted and their hysteresis curves and skeleton curves,were obtained and contrast.The research show that compared to the ordinary recycled concrete,the energy dissipation capacity of the performance enhanced recycled concrete frame joints can increase 20％,32％ for different fiber mixed amount,cracking-resistant capacity and ultimate bearing capacity are also more excellent,which can be applied in practical engineering.

The stress-strain relation of a Shape Memory Alloy (SMA) wire is measured. Based on the result of the testing and the pseudo-elastic phase transition theory, a new hinge-type SMA damper is designed and applied to a three-layer recycled concrete (RAC) frame. The time-history response of the frame model under the earthquake excitation is analyzed with ANSYS code. Results of the analysis show that the new type SMA damper is an ideal passive energy dissipation device, which can effectively reduce the displacement, velocity and acceleration responses of structures.

First,through studying the rules of the elastic modulus and the stress-strain curve of 13 groups including39 specimens of different substitution rates( normal concrete,30%,50%,70%,100%) of recycled aggregate concrete( RAC) this paper determines the suitable constitutive equation of RAC. Then,based on the material parameters of RAC with 50% substitution rate obtained from test and the,finite element software ANAYS,the FE models of two single-span frame of RAC and normal concrete were established and the nonlinear analysis of pseudostatic test was carried out. The analyses of obtained hysteresis curves show that in comparison with normal concrete frame,the RAC frame has better energy dissipation capacity and can be applied to practical engineering.

介绍了ZCuSn10P1双金属轴套的常见缺陷,分析了缺陷产生的原因,提出了防止缺陷的有效方法.