Most of the experimental works on adjacent structures consider a short distance between them to analyze the interaction. Additionally, the majority of these studies focus on changes in the dynamic response of the buildings (e.g. acceleration, lateral displacement, or rocking) assuming that the fundamental frequency and the damping of the structures remain the same as those for the stand-alone case. This work intends to reveal the effect of distance on the interaction between adjacent structures and the effect of neighboring buildings on the dynamic properties of a structure. This was achieved by studying the dynamic response of single degree-of-freedom (SDOF) structures in a laminar box filled with sand sitting on a shake table. This study initially addressed the attenuation of the acceleration through the soil with the distance considering the structures at different distances. The second part of the study considers multiple configurations of adjacent structures to estimate the influence of the number of neighbors on the fundamental frequency and damping ratio of a subject building. An increasing fundamental frequency with an increasing number of participating structures was observed. An equation to estimate the influence of the number of neighboring buildings on the fundamental frequency of the subject structure is proposed. For the damping ratio, a considerable influence of the soil was observed. The lowest damping was obtained for an intermediate number of structures.

中文翻译：

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相邻建筑物邻近度对其动力响应影响的实验研究

大多数关于相邻结构的实验工作都考虑它们之间的短距离来分析相互作用。此外，这些研究中的大多数集中在建筑物的动态响应（例如加速度、横向位移或摇摆）的变化上，假设结构的基频和阻尼与独立情况下的相同。这项工作旨在揭示距离对相邻结构之间相互作用的影响以及相邻建筑物对结构动态特性的影响。这是通过研究单自由度 (SDOF) 结构在一个装满沙子的层流盒中的动态响应来实现的，该层流盒位于振动台上。本研究最初考虑了不同距离处的结构，解决了通过土壤的加速度随距离衰减的问题。研究的第二部分考虑了相邻结构的多种配置，以估计相邻结构的数量对主题建筑的基频和阻尼比的影响。观察到随着参与结构数量的增加，基频增加。提出了一个估计相邻建筑物数量对主体结构基频影响的方程。对于阻尼比，观察到土壤的相当大的影响。对于中等数量的结构，获得了最低的阻尼。研究的第二部分考虑了相邻结构的多种配置，以估计相邻结构的数量对主题建筑的基频和阻尼比的影响。观察到随着参与结构数量的增加，基频增加。提出了一个估计相邻建筑物数量对主体结构基频影响的方程。对于阻尼比，观察到土壤的相当大的影响。对于中等数量的结构，获得了最低的阻尼。研究的第二部分考虑了相邻结构的多种配置，以估计相邻结构的数量对主题建筑的基频和阻尼比的影响。观察到随着参与结构数量的增加，基频增加。提出了一个估计相邻建筑物数量对主体结构基频影响的方程。对于阻尼比，观察到土壤的相当大的影响。对于中等数量的结构，获得了最低的阻尼。提出了一个估计相邻建筑物数量对主体结构基频影响的方程。对于阻尼比，观察到土壤的相当大的影响。对于中等数量的结构，获得了最低的阻尼。提出了一个估计相邻建筑物数量对主体结构基频影响的方程。对于阻尼比，观察到土壤的相当大的影响。对于中等数量的结构，获得了最低的阻尼。