基于子结构试验的土-结相互作用实现研究

发布时间：2018-03-22 20:12

本文选题：土-结相互作用　切入点：振动台　出处：《工程力学》2017年S1期 　论文类型：期刊论文

【摘要】：传统的土-结相互作用试验由于加载系统的出力和尺寸限制,目前只能进行大比例缩尺试验,且对于大跨空间结构、桥梁等长大型结构考虑土-结相互作用的地震作用性能,目前的试验设备也存在局限。而实时动力子结构试验方法将试验对象不可建模部分在实验室进行物理试验,剩余部分作为数值模型进行建模,二者保证同步可对整体试验对象性能进行模拟,克服了传统土-结相互作用试验研究的不足。该文应用动力子结构试验方法,对土-结相互作用问题进行了研究,建立了整体试验模型及混合动力子结构试验模型,并通过试验进行了验证。利用该文发展的子结构试验技术,分别对多跨连续刚构桥梁和钢筋混凝土高墩大跨度刚构桥梁考虑土-结相互作用抗震性能进行了试验研究,试验结果表明该方法存在一定应用价值。
[Abstract]:Traditional soil-junction interaction tests can only be carried out at present in large scale scale tests due to the limit of the load system's output and size, and the seismic behavior of soil-junction interaction is considered for long-span space structures and bridge structures of equal length. At present, there are some limitations in the test equipment, but in the real-time dynamic substructure test method, the unmodeled part of the test object is physically tested in the laboratory, and the remaining part is modeled as a numerical model. The performance of the whole test object can be simulated by ensuring the synchronization of the two methods, which overcomes the shortcomings of the traditional soil-junction interaction test. In this paper, the dynamic substructure test method is used to study the soil-junction interaction. The whole test model and the hybrid power substructure test model are established and verified by experiments. The substructure test technology developed in this paper is used. The seismic behavior of multi-span continuous rigid-frame bridge and long-span rigid frame bridge with reinforced concrete high pier considering soil-junction interaction is studied respectively. The experimental results show that this method has certain application value.
【作者单位】：北京工业大学城市与工程安全减灾教育部重点实验室;
【基金】：北京市自然科学基金项目(8164050) 2014年度北京市优秀人才培养资助青年骨干个人项目(2014000020124G035)
【分类号】：TU317;TU43

【相似文献】