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Estimation of the seismic resistance heritage buildings by dynamic testing of their structural parts

机译：通过结构构件的动态测试估算抗震遗产建筑

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Dynamic testing of full-scale heritage buildings is one of the ways to estimate their seismic resistance. However, this method is rather seldom used, because it is a time- and cost consuming procedure, and it may yield nonlinear deformations, damages in structural elements, which is unacceptable for heritage buildings. Dynamic testing of a relatively small part of a multi-storey building (having the same structural scheme) is one of the possible ways for solution of the above described problem. The reliability of the experimental results, obtained for the structural part, should be verified (at least once) by comparison to those from dynamic tests of a full-scale building. Because this method is problematic for a heritage building, the authors have verified the proposed technique on a usual full-scale multi-storey building and its structural part. A three-storey structural part was tested and the results were compared to those obtained by dynamic vibration testing of the full-scale 11-storey building. It was shown that, if the dynamic parameters of both structures are close, it is possible to obtain the seismic loads acting on the real building, using the impulse forces applied to the structural part. This approach may also be successfully used for the estimation of seismic resistance of real heritage buildings. If a heritage building is located in a seismic zone and according to the experimental data it has low seismic resistance, it is possible to use a base isolation system for improving its seismic response. It is shown in this study that the design of a base isolation system for a full-scale building can be carried out according to experimental results obtained for a structural part of the building.
机译：对完整遗产建筑进行动态测试是评估其抗震能力的方法之一。但是，这种方法很少使用，因为这是一个既费时又费钱的过程，并且可能产生非线性变形，结构元件的损坏，这对于传统建筑是不可接受的。对多层建筑物的相对较小部分（具有相同的结构方案）进行动态测试是解决上述问题的可能方法之一。对于结构部件所获得的实验结果的可靠性，应与全尺寸建筑物的动态测试进行比较（至少一次）。由于这种方法对于传统建筑是有问题的，因此作者已经在通常的大型多层建筑及其结构部分上验证了该技术。测试了一个三层高的结构部分，并将结果与​​通过对全尺寸11层建筑物进行动态振动测试获得的结果进行了比较。结果表明，如果两个结构的动力参数都接近，则可以通过施加到结构部件上的冲击力来获得作用在真实建筑物上的地震荷载。这种方法也可以成功地用于估算真实建筑的抗震性能。如果文物建筑位于地震带中，并且根据实验数据，其抗震性较低，则可以使用基础隔离系统来改善其地震响应。在这项研究中表明，可以根据对建筑物结构部分获得的实验结果来进行用于大型建筑物的基础隔离系统的设计。

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