[1]曹霞,陈逸聪,宋亚运,等.间接加载高强钢筋RPC梁受剪性能试验[J].华侨大学学报(自然科学版),2017,38(3):330-335.[doi:10.11830/ISSN.1000-5013.201703009]
　CAO Xia,CHEN Yicong,SONG Yayun,et al.Trial Research on Shear Capacity of RPC Beams Under Indirect Loading[J].Journal of Huaqiao University(Natural Science),2017,38(3):330-335.[doi:10.11830/ISSN.1000-5013.201703009]
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间接加载高强钢筋RPC梁受剪性能试验()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第38卷
期数:
2017年第3期
页码:
330-335
栏目:
出版日期:
2017-05-20

文章信息/Info

Title:
Trial Research on Shear Capacity of RPC Beams Under Indirect Loading
文章编号:
1000-5013(2017)03-0330-06
作者:
曹霞1; 2;  陈逸聪1; 2;  宋亚运1; 2;  金奇志1; 2
1. 广西岩土力学与工程重点实验室, 广西 桂林 541004;2. 桂林理工大学 土木与建筑工程学院, 广西 桂林 541004
Author(s):
CAO Xia1; 2;  CHEN Yicong1; 2;  SONG Yayun1; 2;  JIN Qizhi1; 2
1. Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering, Guilin 541004, China; 2. College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China
关键词:
高强钢筋;  活性粉末混凝土;  间接加载;  加载位置;  受剪性能
Keywords:
high strength steel;  reactive powder concrete;  indirect load;  loading position;  shear capacity
分类号:
TU375.1
DOI:
10.11830/ISSN.1000-5013.201703009
文献标志码:
A
摘要:
为了研究间接加载对高强钢筋活性粉末混凝土(RPC)梁受剪性能的影响,进行一批不同加载位置RPC梁的试验,分析其对裂缝、挠度、抗剪承载力及破坏形态等方面的影响.结果表明:挑耳在上部和挑耳同梁等高的间接加载RPC梁的裂缝发展趋势相近,裂缝的增长速度比直接加载梁慢,而挑耳在下部的试验梁裂缝发展迅速,并在主梁上形成拱形裂缝;加载方式对RPC梁的刚度影响不大;挑耳在上部和挑耳同梁等高的间接加载RPC梁的极限承载力并不比直接加载RPC梁低;挑耳在下部的间接加载RPC梁发生了一定程度的拉脱破坏,从而导致其极限承载力比直接加载RPC梁降低25%左右;间接加载梁的开裂荷载比直接加载梁都提高25%左右;挑耳在梁上部及挑耳同梁等高的RPC主梁可不配置附加横向钢筋,挑耳在梁下部的主梁可以减少附加横向钢筋的配置量.
Abstract:
In order to study the influence of indirect loading on shear capacity of reactive powder concrete(RPC)beams, a group of different loading positions of RPC beam was tested, and influences of different loading on cracking, mid span deflection, shear capacity, failure patterns were analyzed. The results show that the development trend of the cracks in the RPC beams with upper cross beam is similar to the trend with equal height cross beam, and the crack growth rate is slower than the rate of the direct loading beam. The crack of the main RPC beams with lower cross beams develops rapidly, and arch cracks form on the main beam. The loading pattern has little influence on the stiffness of the RPC beams. The ultimate bearing capacity of the RPC beams with upper or equal height cross beam under indirect loading isn’t less than the capacity under direct loading. The tensile damage occurs in main RPC beams with the lower cross beams, which decreases the ultimate bearing capacity by about 25% in comparison with the capacity under direct loading.The cracking load of-收稿日期:2016-09-26通信作者:曹霞(1965-),女,教授,主要从事新型混凝土结构、预应力技术和建筑物加固技术的研究.E-mail:782343096@qq.com.基金项目:国家自然科学基金资助项目(51368013); 广西岩土力学与工程重点实验室科研资助项目(2015-A-02); 广西研究生教育创新计划项目(YCSZ2015160)http://www.hdxb.hqu.edu.cnthree beams under indirect loading is approximately 25% greater than the ones under direct loading. The additional transverse rebar is unnecessary in RPC beams with upper or equal height cross beam, the additional transverse rebar with upper or equal height cross beam can be reduced.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2016-09-26
通信作者: 曹霞(1965-),女,教授,主要从事新型混凝土结构、预应力技术和建筑物加固技术的研究.E-mail:782343096@qq.com.
基金项目: 国家自然科学基金资助项目(51368013); 广西岩土力学与工程重点实验室科研资助项目(2015-A-02); 广西研究生教育创新计划项目(YCSZ2015160)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2017-05-20