全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

超载情况下HPFL加固钢筋混凝土梁疲劳性能试验研究

Keywords: 桥梁工程,高性能复合砂浆钢筋网,加固,超载,疲劳性能

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过2根对比梁和9根加固梁的静力对比和疲劳试验,研究了超载情况下高性能水泥复合砂浆钢筋网薄层(HighPerformanceFerrocementLaminate,简称HPFL)加固钢筋混凝土梁的疲劳性能。对超载情况下试件的破坏形式、疲劳寿命、挠度和材料应变进行了分析。结果表明,超载情况下试件的破坏模式均始于梁底纵筋的疲劳断裂,疲劳寿命只有32.7万~66.8万次,而未超载情况下加固试件的疲劳寿命均大于200万次。加固梁的疲劳寿命均明显高于对比梁,疲劳寿命随加固钢筋网用量的增加而增大。在经过相同次数的循环之后,加固试件的挠度和混凝土及钢筋的应变都低于未加固梁。由于加固梁端部植入了剪切销钉,未发生梁端部加固层与混凝土之间的界面剥离。

References

[1]  [M].Beijing:China Communications Press,2004.
[2]  李剑,孙建渊.超载对大型公路桥梁结构的损伤评估及诊断方法研究
[3]  [J].重庆交通学院学报,2006,25(6):19-21.LI Jian,SUN Jianyuan.Damage Evaluate and the Method of Diagnose Study of Great Highway Bridge Structure by Overloading
[4]  [J].Journal of Chongqing Jiaotong University,2006,25(6):19-21.
[5]  孙晓燕,黄承逵.外贴碳纤维布加固超载后钢筋混凝土桥梁构件抗弯性能试验
[6]  [J].中国公路学报,2006,19(4):82-87.SUN Xiaoyan,HUANG Chengkui.Test on Flexural Performance of RC Bridge Member after Overload Reinforced with Externally Bonded FRP
[7]  [J].China Journal of Highway and Transport,2006,19(4):82-87.
[8]  DAWOOD S M.SUMNER R E.Fatigue and Overloading Behavior of Steel-concrete Composite Flexural Members Strengthened with High Modulus CFRP Materials
[9]  [J].Journal of Composites for Construction,ASCE,2007,11(6):659-669.
[10]  尚守平.高性能水泥复合砂浆钢筋网加固混凝土结构设计与施工指南
[11]  [M].北京:中国建筑工业出版社,2008.SHANG Shouping.A Guide for the Design and Construction of RC Structures Strengthened with High Performance Ferrocement Laminate
[12]  邓宗才,张鹏飞,李剑辉,等.预应力AFRP加固混凝土梁的疲劳与静载特性
[13]  [J].中国公路学报,2007,20(6):49-55.DENG Zongcai,ZHANG Pengfei,LI Jianhui,et al.Fatigue and Static Behaviors of RC Beams Strengthened with Prestressed AFRP
[14]  [J].China Journal of Highway and Transport,2007,20(6):49-55.
[15]  HEFFERNAN P J,ERKI M A.Fatigue Behavior of Reinforced Concrete Beams Strengthened with Carbon Fiber Reinforced Plastic Laminates
[16]  刘来君,赵小星.桥梁加固设计与施工技术
[17]  [M].北京:人民交通出版社,2004.LIU Laijun,ZHAO Xiaoxing.Design and Construction Technique for Bridge Strengthening
[18]  [M].Beijing:China Architecture & Building Press,2008.
[19]  滕锦光,陈建飞,史密斯S T,等.FRP加固混凝土结构
[20]  [M].北京:中国建筑工业出版社,2005.TENG Jinguang,CHEN Jianfei,SMITH S T,et al.FRP Strengthened RC Structures
[21]  [M].Beijing:China Architecture & Building Press,2005.
[22]  尚守平,曾令宏,彭晖,等.复合砂浆钢丝网加固RC受弯构件的试验研究
[23]  [J].建筑结构学报,2003,24(6):87-91.SHANG Shouping,ZENG Linghong,PENG Hui,et al.Flexural Behavior of Reinforced Concrete Beams with Ferrocement
[24]  [J].Journal of Building Structures,2003,24(6):87-91.
[25]  罗利波,尚守平.复合砂浆钢筋网加固混凝土梁抗剪计算模型
[26]  [J].科学技术与工程,2006,6(6):788-790.LUO Libo,SHANG Shouping.A Discussion on Calculating Model of Reinforced Concrete Beams Shear Strengthened with Ferrocement
[27]  [J].Science Technology and Engineering,2006,6(6):788-790.
[28]  颜军,尚守平,聂旭.高性能复合砂浆高温后的抗压强度试验研究
[29]  [J].铁道科学与工程学报,2006,3(4):59-62.YAN Jun,SHANG Shouping,NIE Xu.Experimental Investigation of Compressive Strength of High Performance Composite Mortar after Elevated Temperature
[30]  [J].Journal of Railway Science and Engineering,2006,3(4):59-62.
[31]  曾令宏,尚守平,万剑平,等.复合砂浆钢筋网加固钢筋混凝土梁静力和疲劳性能试验研究
[32]  [J].建筑结构学报,2008,29(1):83-89.ZENG Linghong,SHANG Shouping,WAN Jianping,et al.Static and Fatigue Experimental Study on Reinforced Concrete Beams Strengthened with High-performance Ferrocement
[33]  [J].Journal of Building Structures,2008,29(1):83-89.
[34]  蒋隆敏.钢筋网高性能水泥复合砂浆加固RC柱在静载与低周反复荷载作用下的性能研究
[35]  [D].长沙:湖南大学,2006.JIANG Longmin.Research on the Performance of RC Columns Strengthened with High Performance Composite Cement Mortar Laminates Reinforced by Mesh Reinforcements under Monotonic Loading and Laterally Cyclic Loading
[36]  [D].Changsha:Hunan University,2006.
[37]  AASHTO.AASHTO LRFD Bridge Design Specifications
[38]  [S].3rd ed.Washington D C:AASHTO,2004.
[39]  李秀芬,吴佩刚,赵光仪.高强混凝土梁抗弯疲劳性能的试验研究
[40]  [J].土木工程学报,1997,30(5):37-42.LI Xiufen,WU Peigang,ZHAO Guangyi.Experimental Research on Bending Fatigue Behavior of High-strength Concrete Beams
[41]  [J].China Civil Engineering Journal,1997,30(5):37-42.
[42]  [J].Journal of Composites for Construction,ASCE,2004,8(2):132-140.

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413