基于角钢连接的GFRP梁柱T形节点性能研究

doi:10.19936/j.cnki.2096-8000.20240728.007

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (7): 53-61.DOI: 10.19936/j.cnki.2096-8000.20240728.007

基于角钢连接的GFRP梁柱T形节点性能研究

顾靖¹, 宗钟凌^1,2,3*, 谢青海^1,2, 李珂珂¹, 李猛¹

1.江苏海洋大学土木与港海工程学院,连云港 222002;
2.江苏省海洋工程基础设施智能建造工程研究中心,连云港 222002;
3.江苏省海洋资源开发研究院,连云港 222002

收稿日期:2023-06-09 出版日期:2024-07-28 发布日期:2024-08-08
通讯作者: 宗钟凌(1979—),男,博士,教授,研究方向为复合材料及组合结构设计理论、复合桩基设计与软土地基处理等,Jouzongzhl@Jou.edu.cn。
作者简介:顾靖(1998—),女,硕士,研究方向为复合材料及组合结构设计理论。
基金资助:
江苏省重点研发计划(社会发展)项目(BE2021681);江苏省自然科学基金(BK20210925)

Study on behavior of GFRP beam-to-column T-joints based on angle steel connection

GU Jing¹, ZONG Zhongling^1,2,3*, XIE Qinghai^1,2, LI Keke¹, LI Meng¹

1. School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222002, China;
2. Jiangsu Ocean Engineering Research Center for Intelligent Infrastructure Construction, Lianyungang 222002, China;
3. Jiangsu Institute of Marine Resources Development, Lianyungang 222002, China

Received:2023-06-09 Online:2024-07-28 Published:2024-08-08

摘要/Abstract

摘要： 采用设置上下角钢的连接形式,设计了不同类型的GFRP梁柱T形节点,通过对八个节点构件进行单调加载试验,并结合有限元分析,研究了角钢类型、螺栓排距、螺栓端距以及螺栓排数对GFRP梁柱T形节点承载力及变形性能的影响。研究结果表明:与未设置加劲肋相比,增加加劲肋可显著减小角钢转角处的变形,设置三角形加劲肋提高了GFRP梁柱T形节点的承载能力和转动刚度;节点的极限承载力随螺栓排距的增大而提高,随螺栓端距的增大而降低,随螺栓排数的增加先提高后降低;转动刚度则随排距和端距的增加呈现先增大后降低的趋势。在本文分析的参数范围内,GFRP梁柱T形节点采用设置两排螺栓的角钢连接可获得较优的力学性能,同时排距为45~50 mm,端距为55 mm较为合理。

关键词: GFRP梁柱T形节点, 角钢连接, 承载能力, 转动刚度, 力学性能

Abstract: Different types of T-joints of GFRP beam-column were designed with the connection form of upper and lower angle steels. The effects of type of angle steel, row distance of bolt, end distance of bolt and row number of bolt on the bearing capacity and deformation properties of T-joints of GFRP beam-column were studied through the monotone loading test of eight node members and combined with the finite element analysis. The results show that, compared with no stiffeners, the addition of stiffeners can significantly reduce the deformation at the angle steel corner, and the installation of triangular stiffeners can improve the bearing capacity and rotational stiffness of T-joints of GFRP beam-column. The ultimate bearing capacity of joints increases with the increase of row spacing of bolt, decreases with the increase of end spacing of bolt, and first increases and then decreases with the increase of row number of bolt. The rotational stiffness increases first and then decreases with the increase of row distance and end distance. In the range of parameters analyzed in this paper, the T-joints of GFRP beam-column can obtain better mechanical properties by angle steel connection with two rows of bolts, and it is reasonable to control the row spacing between 45 mm and 50 mm and the end spacing between 55 mm.

Key words: T-joint of GFRP beam-column, angle steel connection, carrying capacity, rotational stiffness, mechanical property

中图分类号:

TB332

顾靖, 宗钟凌, 谢青海, 李珂珂, 李猛. 基于角钢连接的GFRP梁柱T形节点性能研究[J]. 复合材料科学与工程, 2024, 0(7): 53-61.

GU Jing, ZONG Zhongling, XIE Qinghai, LI Keke, LI Meng. Study on behavior of GFRP beam-to-column T-joints based on angle steel connection[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(7): 53-61.

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基于角钢连接的GFRP梁柱T形节点性能研究

Study on behavior of GFRP beam-to-column T-joints based on angle steel connection

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