叶勇(土木工程系副主任)
  • 学位：工学博士学位
  • 职称：副教授

硕士生导师

学位：工学博士学位
办公地点：土木学科实验大楼505办公室
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职务：土木工程系副主任

学科：结构工程

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Flexural behavior of stone beams reinforced with prestressed NSM CFRP bars
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发表刊物：
Construction and Building Materials
摘要：
This paper is devoted to experimentally evaluate the efficiency of prestressed near surface mounted (NSM) carbon fiber reinforced polymer (CFRP) bars for reinforcing stone beams to improve their flexural performance. A total of nine stone beams, classified into three test sets (Set A, Set B, and Set C) according to the beam span and the cross-sectional dimensions, were reinforced with prestressed NSM CFRP bars and tested under monotonic loading. In each test set, one bare stone beam was also tested for comparison. In Set C, the reinforced stone beams were strengthened with CFRP-strip wrapping in the shear span to increase the shear capacity. The test parameters included the amount of NSM CFRP reinforcements and the prestressing force. It was found from the test results that the use of prestressed NSM CFRP bars shifted the failure of stone beams from abrupt fracture to a more ductile mode and the load capacity was significantly increased. Failure of the reinforced stone beams in Set A and Set B occurred either by slip of the CFRP reinforcement or CFRP debonding or flexural–shear failure. The reinforced stone beams with CFRP-strip wrapping in Set C failed in the flexural–shear mode accompanied by rupture of the CFRP strips. The load–deflection responses of the reinforced stone beams exhibited a three-stage behavior which was similar to that of the reinforced concrete (RC) beams. The CFRP-strip wrapping effectively enhanced the shear capacity of the reinforced stone beams and avoided the abrupt failure when the first crack occurred in the shear span. For the stone beams reinforced with a same amount of NSM CFRP reinforcements, the increase in the prestressing force resulted in an increase in the load capacity accompanied by a reduction in the deformation capacity when the failure was governed by CFRP debonding.
论文类型：
期刊论文
页面范围：
2014,54:466-476
是否译文：
否
收录刊物：
SCI
第一作者：
叶勇
合写作者：
刘阳,王兰
通讯作者：
郭子雄
附件：
  • Ye et al (2014)-Flexural behavior of stone beams reinforced with prestressed NSM CFRP bars.pdf
    • 个人简介

    叶勇博士，男，1985年7月出生，福建泉州人。现任华侨大学土木工程学院副教授、硕士研究生导师、土木工程系副主任，从事结构工程方向的教学与研究工作。主持国家自然科学基金项目2项(面上、青年各1项)、福建省自然科学基金面上项目2项、中国博士后科学基金项目1项等多项科研项目。在国内外学术期刊及会议上发表论文80余篇，其中SCI、EI收录50余篇，1篇论文获英国土木工程师协会(ICE)年度出版奖。曾获华侨大学青年教师“精彩一堂课”教学竞赛一等奖，华侨大学优秀班主任，华侨大学土木工程学院优秀共产党员。

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