BFRP筋和钢筋组合配筋混凝土梁受剪性能

doi:10.19936/j.cnki.2096-8000.20231228.003

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (12): 19-27.DOI: 10.19936/j.cnki.2096-8000.20231228.003

BFRP筋和钢筋组合配筋混凝土梁受剪性能

薛昕¹, 陈建¹, 彭峻帧²

1.厦门大学建筑与土木工程学院,厦门 361005;
2.长沙中泛置业有限公司,长沙 410000

收稿日期:2022-10-10 出版日期:2023-12-28 发布日期:2024-02-26
作者简介:薛昕(1972—),男,博士,副教授,主要从事复合材料方面的研究,xuexin@xmu.edu.cn。
基金资助:
国家自然科学基金联合基金项目(U2005216);厦门市交通基础设施智能管养工程技术研究中心开放基金资助项目(TCIMI201804)

Shear performance of concrete beams with BFRP-reinforcement and steel bar combination reinforcement

XUE Xin¹, CHEN Jian¹, PENG Junzhen²

1. School of Architecture and Civil Engineering, Xiamen University, Xiamen 361005, China;
2. Changsha Zhongfan Real Estate Co., Ltd., Changsha 410000, China

Received:2022-10-10 Online:2023-12-28 Published:2024-02-26

摘要/Abstract

摘要： 由于纤维增强复合材料(FRP)筋优异的耐腐蚀性,使用其代替钢筋对混凝土进行补强可以从根本上解决由于钢筋锈蚀引起的耐久性问题,但目前在FRP筋混凝土构件或结构的力学性能评价上尚存在诸多亟待解决的课题。本文通过采用玄武岩纤维增强复合材料(BFRP)筋和钢筋组合配筋的形式对补强筋的弹性模量和配筋率对混凝土梁受剪性能的影响开展试验研究,并基于试验结果对FRP筋混凝土梁受剪承载力的各国规范评价公式的评价精度进行验证分析,为合理评价FRP筋混凝土结构力学性能积累基础研究数据,提供理论支撑。

关键词: BFRP筋, 混凝土梁, 承载机制, 受剪承载力, 公式评价, 复合材料

Abstract: Due to the excellent corrosion resistance property of FRP (fiber reinforced polymer) bars, the durability problem caused by steel bar corrosion can be fundamentally solved by using FRP reinforcement as a substitute for ordinary steel bars. However, there are still many topics needed to be made clear regarding the load-carrying performance of FRP-reinforced concrete members or structures. By using hybrid reinforcement of FRP bars and steel bars, this paper experimentally studied the effects of elastic modulus and steel ratio of reinforcement on the shear performance of concrete beams with BFRP-reinforcement and steel bar combination reinforcement. In addition, based on the test results, this paper further performed a validation of the shear strength evaluation formula proposed by codes of various countries. It is hoped that this paper could contribute to the further understanding of the shear performance of FRP-reinforced concrete beams.

Key words: BFRP bars, concrete beams, load carrying mechanism, shear strength, formula evaluation, composites

中图分类号:

TB332

薛昕, 陈建, 彭峻帧. BFRP筋和钢筋组合配筋混凝土梁受剪性能[J]. 复合材料科学与工程, 2023, 0(12): 19-27.

XUE Xin, CHEN Jian, PENG Junzhen. Shear performance of concrete beams with BFRP-reinforcement and steel bar combination reinforcement[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(12): 19-27.

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BFRP筋和钢筋组合配筋混凝土梁受剪性能

Shear performance of concrete beams with BFRP-reinforcement and steel bar combination reinforcement

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