Experimental investigations of fiber and steel reinforced elastomeric bearings: Shear modulus and damping coefficient
Experimental investigations of fiber and steel reinforced elastomeric bearings: Shear modulus and damping coefficient
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DOI：
10.1016/j.engstruct.2014.06.008
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发表时间：
2014-09
影响因子：
5.5
通讯作者：
A. Strauss;E. Apostolidi;T. Zimmermann;Ulrich Gerhaher;S. Dritsos
中科院分区：
文献类型：
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作者：
A. Strauss;E. Apostolidi;T. Zimmermann;Ulrich Gerhaher;S. Dritsos
在过去的几十年里，钢筋橡胶支座已被广泛用于地震隔离的目的。用纤维板加固的弹性支座的创新隔震装置已经开始取代那些用钢筋加固的装置。在本文中，纤维增强弹性支座的机械特性的文献综述，目前欧洲标准的静态和动态加载的弹性支座的缺点进行了讨论。为了进行比较，本文介绍了在各种荷载和支承条件下，用各种增强材料对弹性支座进行的实验过程。实验过程包括循环加载测试，同时应用垂直应力的三种轴承类型的不同尺寸和材料特性。关键参数，如垂直应力，水平挠度，轴承高度，数量的弹性体和加强层，加强材料，和类型的轴承支持上的有效剪切模量和阻尼系数的影响进行了检查。此外，通过各自的分析配方得到的实验和分析结果之间的比较进行了进一步讨论。提出了适当的分析公式，以更好地调整实验结果。
In the past few decades, steel reinforced elastomeric bearings have been extensively used for seismic isolation purposes. Innovative isolation devices of elastomeric bearings reinforced with fiber sheets have begun to replace those with steel reinforcement. In the present article, a literature review on the mechanical characteristics of fiber reinforced elastomeric bearings is presented and the shortcomings of the current European standards concerning statically and dynamically loaded elastomeric bearings are discussed. An experimental procedure conducted on elastomeric bearings with various reinforcing materials and under various loading and support conditions is described for comparison purposes. The experimental procedure includes cyclic loading tests with a concurrent application of vertical stress for three bearing types of different dimensional and material properties. The influence of crucial parameters such as vertical stress, horizontal deflection, bearing height, number of elastomer and reinforcement layers, reinforcement material, and type of bearing support on the effective shear modulus and damping coefficient are examined. Moreover, comparisons between experimental and analytical results obtained by respective analytical formulations are further discussed. Appropriate analytical formulations are proposed for better adjustment to the experimental results.