论文部分内容阅读
基于目前低屈服点钢主要是作为耗能器(阻尼器)应用于上部结构的耗能减震,尝试设计了一种受力清晰、构造合理的多向低屈服点钢隔震耗能器支座,并对其进行初步的理论、试验研究和软件分析,为低屈服点钢隔震耗能支座的研制与应用开展一些有益的探索。对国产低屈服点钢进行了拉伸性能试验,得到了材料的屈服强度和延性。根据试验结果,通过ANSYS有限元程序对多向低屈服点钢隔震耗能支座模型进行了低周反复荷载作用下的多参数化验证性分析。结果表明:多向低屈服点钢隔震耗能支座具有较低的屈服点,较大的延性和耗能能力。通过不同的参数对比得到,随着支座腹板高厚比的减小、高宽比的增大,支座的耗能能力增强,等效阻尼比较大。
Based on the current low yield point steel is mainly used as a dissipater (damper) energy dissipation damping on the superstructure, try to design a clear force, reasonable structure of multi-directional low yield point steel isolator Block, and preliminary theoretical, experimental research and software analysis, to carry out some useful exploration for the development and application of low yield point steel isolated energy dissipation bearing. The tensile properties of domestic low yield point steel were tested and the yield strength and ductility of the material were obtained. According to the test results, multi-parameter confirmatory analysis of multi-directional low yield point steel isolation energy dissipation bearing model was carried out by ANSYS finite element program. The results show that the multi-directional low yield point steel isolator has lower yield point, greater ductility and energy dissipation capacity. Through the comparison of different parameters, with the reduction of height-to-thickness ratio and the aspect ratio of the support web, the energy dissipation capacity of the support is enhanced and the equivalent damping ratio is relatively large.