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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。
Due to the output and size limitation of the loading system, the conventional soil-knot interaction test can only conduct large-scale scale test at present, and the earthquake action performance of soil-knot interaction considering the long-span space structure, bridge and other long and large structures, The current test equipment is also limited. However, the real-time dynamic substructure test method physically tests the non-modelable part of the test object in the laboratory and the remaining part as a numerical model to be able to simulate the performance of the overall test object simultaneously, so as to overcome the problems of traditional soil- The role of experimental research deficiencies. In this paper, the dynamical substructure test method is used to study the soil-knot interaction problem. The overall test model and the hybrid substructure test model are established and verified by experiments. Based on the substructure test technology developed in this paper, the seismic performance of multi-span continuous rigid-frame bridges and reinforced concrete high-rise long-span rigid frame bridges considering soil-knot interaction are studied respectively. The experimental results show that this method has some practical value .