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首页> 外文期刊>Journal of Nondestructive Evaluation >A Procedure for the Structural Identification of Masonry Towers
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A Procedure for the Structural Identification of Masonry Towers

机译：砌体塔的结构识别的程序

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摘要

Historic masonry towers, as well as bell towers, minarets and chimneys, represent an important part of the Mediterranean basin architectural heritage. Widely spread out on the Italian peninsula, the bell towers reflect cultural, social and religious aspects of the communities, thus, their conservation remains an open challenge for scientists, governments and local communities. The seismic behavior of slender masonry structures is, generally, characterized by the combination, of the static vertical loads with dynamic loading. However, the determination of the structural behavior of masonry structures is always a complex challenge due to the material inhomogeneity, manufacturing imperfections, geometric configuration or structural interaction between the layers in the case multi-leaf masonry structures. In this research, an expeditious and low-cost procedure for the structural identification of historic masonry towers is proposed. The procedure, based on experimental measurements and numerical modeling, aims at the estimation of the average mechanical characteristics under service loads. In particular, the procedure proposes the acquisition of the fundamental frequency by means of a single compact digital tromograph and successive finite element model calibration starting from the experimental data. The whole identification procedure has been at first verified on an elementary laboratory specimen, then applied on the historic bell tower of Basilica dei Frari located in the historic city center of Venice.
机译：历史悠久的砌体塔楼以及钟楼，尖塔和烟囱，代表地中海盆地建筑遗产的重要组成部分。广泛展开在意大利半岛，钟楼反映了社区的文化，社会和宗教方面，因此，他们的保护仍然是科学家，政府和当地社区的开放挑战。细长砌体结构的地震行为通常是具有动态载荷的静垂直载荷的组合的特征。然而，由于壳体多叶砌体结构中的层之间的材料不均匀性，制造缺陷，几何构造或结构相互作用，确定砌体结构的结构行为始终是复杂的挑战。在这项研究中，提出了一种迅速的，低成本的结构识别历史悠久的砌体塔。基于实验测量和数值建模的程序旨在估计服务负荷下的平均机械特性。特别地，该过程提出了通过单一紧凑的数字脚尖和连续有限元模型校准从实验数据开始获取基本频率。在基本实验室标本中首次验证了整个识别程序，然后在位于威尼斯历史悠久的市中心的大教堂Dei Fra里历史悠久的钟楼。

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