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首页> 外文期刊>Magazine of Concrete Research >Inelastic behaviour of exterior wide beam-column connections with U-shaped precast shell beam stressed by post-tensioning
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Inelastic behaviour of exterior wide beam-column connections with U-shaped precast shell beam stressed by post-tensioning

机译：后张紧的U型预制壳梁在外部宽梁柱连接中的非弹性行为

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摘要

The post-tensioned precast concrete system (PPS) consists of U-shaped precast wide beams and a concrete column. The continuity of the beam-column joint is provided with the topping concrete on the precast concrete shell beam and post-tensioning. The purpose of the current paper is to evaluate the response of a PPS exterior beam-column joint subjected to cyclic lateral loading. To this end, the experimental investigation was performed with three half-scale specimens of the exterior connection. The design parameters are the beam-width-to-column-width ratio and the amount of beam reinforcement placed inside the column core. The test results showed that specimen cracks were distributed well and plastic hinges spread towards midspan without any significant degradation of strength and ductility. Furthermore, the specimens sufficiently resist up to a limiting drift ratio of 0.035 in accordance with the the provisions given by the American Concrete Institute in their 'Acceptance criteria for moment frames based on structural testing'.
机译：后张法预制混凝土系统（PPS）由U形预制宽梁和混凝土柱组成。预制混凝土壳体梁上的浇筑混凝土和后张预应力为梁柱节点提供了连续性。本文的目的是评估承受周期性侧向荷载的PPS外部梁柱节点的响应。为此，对外部连接的三个半比例试样进行了实验研究。设计参数是梁宽与柱宽之比以及放置在柱芯内部的梁加固量。测试结果表明，试样裂纹分布均匀，塑料铰链向中跨分布，强度和延展性均未明显降低。此外，根据美国混凝土协会在其“基于结构试验的弯矩框架的验收标准”中的规定，这些试样足以抵抗高达0.035的极限漂移率。

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