Pull-out strength of perforated steel plates with oval-shaped perforation
Pull-out strength of perforated steel plates with oval-shaped perforation
复制标题
椭圆形穿孔冲孔钢板的拉拔强度
DOI：
10.1002/2475-8876.12363
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发表时间：
2023
影响因子：
0.9
通讯作者：
Takashi Fujinaga and Teruhisa Tanaka
中科院分区：
文献类型：
--
作者：
鈴木和将;Huynh Quang Huy Viet;宇田智紀;水藤寛;Takashi Fujinaga and Teruhisa Tanaka
Perfobond Leisten（PBL）剪力连接件在建筑结构中的应用越来越受到关注。提出了一种在钢管混凝土柱节点中使用穿孔钢板的新方法。开孔钢板的开孔形状一般为圆形，与PBL剪力连接件相似。然而，在本研究中，使用椭圆形穿孔来增加混凝土的双剪切面积。为评价开孔钢板的抗拉性能，对钢管混凝土空心砌块中开有椭圆形孔的开孔钢板进行了拉拔试验。共测试了29个试件，并在钢管被动约束下确定和分析了穿孔钢板的拔出强度。从穿孔处混凝土的双剪以及钢板表面与混凝土之间的粘结和/或摩擦两个方面讨论了应力传递的贡献。还开发了用于确定最大拔出强度的公式。
The use of Perfobond Leisten (PBL) shear connectors in building structures has attracted increasing interest. A new approach for using perforated steel plates in concrete‐filled steel tube (CFST) column splices was implemented in this study. The shape of the perforation opening in perforated steel plates is generally a circle, similar to that of PBL shear connectors. However, in this study, an oval‐shaped perforation was used to increase the double shear area of the concrete. A pull‐out experiment was conducted on perforated steel plates with oval‐shaped perforations in a CFST block to evaluate the tensile performance of the perforated steel plates. A total of 29 specimens were tested, and the pull‐out strengths of the perforated steel plates were determined and analyzed under passive confinement from the steel tube. The contribution of the stress transfer was discussed in terms of the double shear of the concrete in the perforation and the bond and/or friction between the surface of the steel plate and concrete. Formulas for determining the maximum pull‐out strength were also developed.