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Numerical and Experimental Assessment of an Improved Design Detail for Partially Grouted Reinforced Masonry Wall Structures

机译:部分灌浆增强砌体墙体结构改进设计细节的数值和实验评估

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Reinforced masonry buildings predominantly are partially grouted in areas of low or moderate seismicity in North America. The walls in such structures typically contain widely spaced separately grouted vertical reinforced cells and bond beams, making such walls prone to brittle shear-dominated behavior. This paper assessed the effectiveness of a new design detail which uses side-by-side vertical reinforced cells to improve the seismic performance of partially grouted masonry (PGM) wall structures. A numerical study was conducted with nonlinear finite-element models to understand the influence of the new design detail on the behavior of wall segments by using data from previous quasi-static tests. A full-scale single-story PGM wall structure was tested on a shake table to assess the influence of the new design detail in the performance of a building system. The test results were supplemented with finite-element analyses. The numerical and experimental results showed that the use of side-by-side reinforced cells can enhance the strength and ductility of PGM structures. (C) 2021 American Society of Civil Engineers.
机译:钢筋砌体建筑主要在北美的低或中度地震性地区部分地灌浆。这种结构中的壁通常含有可分别间隔的单独灌浆的垂直增强电池和键合梁,使得这种壁容易发生脆性剪切主导的行为。本文评估了使用并排垂直增强电池的新设计细节的有效性,以改善部分灌浆砌体(PGM)壁结构的地震性能。用非线性有限元模型进行数值研究,以了解通过使用先前的准静态测试的数据来了解新设计细节对墙网行为的影响。在摇动台上测试了全规模的单层PGM墙结构,以评估新的设计细节在建筑系统性能方面的影响。测试结果补充有限元分析。数值和实验结果表明,使用并排增强电池可以增强PGM结构的强度和延展性。 (c)2021年美国土木工程师协会。

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