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首页> 外文期刊>Bulletin of earthquake engineering >Nonlinear FE analysis of precast RC pinned beam-to-column connections under monotonic and cyclic shear loading
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Nonlinear FE analysis of precast RC pinned beam-to-column connections under monotonic and cyclic shear loading

机译：单调和循环剪力作用下预制RC固定梁到柱连接的非线性有限元分析

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摘要

In precast technology, mostly (but not exclusively), frame structures with pinned beam-to-column connections are preferred, especially in low-rise buildings due to the flexibility, lower cost and more favourable behaviour they provide, especially in the case of large spans and pretensioned interconnected members. However the available literature on the behaviour of pinned connections, especially under seismic loading, can be characterized as poor, even though their use in Europe and elsewhere is rather extended. In the terms of the present research a nonlinear 3D numerical model was developed and calibrated against available experimental data to be used as an effective tool for the analytical prediction of the behaviour of pinned connections, under monotonic and cyclic shear loading. The experimental data were derived from the European FP7 project SAFECAST, Grant Agreement Number 218417. The tests were performed at the Laboratory for Earthquake Engineering of the National Technical University of Athens, Greece. From the numerical results useful information was obtained on component level about: (a) the type of the observed failure mechanism; (b) the amount of dissipated energy; (c) the location of the developed plastic hinges along the steel dowel, and (d) the evolution of stresses and strains along the dowel(s) and in the mass of the surrounding grout. However the numerical model can be further utilized to investigate and quantify the effect of several parameters (that were not experimentally investigated in depth, or were not investigated at all) on the response of pinned connections.
机译：在预制技术中，大多数情况下（但不是唯一地），最好采用具有固定梁到柱连接的框架结构，尤其是在低层建筑中，因为它们具有灵活性，较低的成本和更有利的性能，尤其是在大型建筑中跨度和预张紧的互连构件。然而，尽管有关销钉连接在欧洲和其他地方的用途已得到广泛推广，但有关销钉连接行为（尤其是在地震作用下）的现有文献可被认为是不良的。根据本研究，开发了非线性3D数值模型，并针对可用的实验数据进行了校准，以用作有效预测单调和周期性剪切载荷下销钉连接行为的有效工具。实验数据来自欧洲FP7项目SAFECAST，授予协议号218417。测试在希腊雅典国立技术大学的地震工程实验室进行。从数值结果中，可以获得有关以下方面的有用信息：（a）观察到的失效机理的类型; （b）耗散的能量; （c）沿塑料销钉的塑料铰链的位置，以及（d）沿销钉和周围灌浆质量的应力和应变的演变。但是，该数值模型可以进一步用于调查和量化几个参数（未经过深度实验或根本未进行调查）对固定连接响应的影响。

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