[1]袁微微,杜文平,杨才千,等.PVA-ECC钢丝网复合薄板弯曲性能试验研究[J].西安建筑科技大学学报(自然科学版),2020,52(01):85-91.[doi:10.15986j.1006-7930.2020.01.012]
　YUAN Weiwei,DU Wenping,YANG Caiqian,et al.Study on the bending behavior of PVA-ECC thin compositeplates with steel wire mesh[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2020,52(01):85-91.[doi:10.15986j.1006-7930.2020.01.012]
点击复制

PVA-ECC钢丝网复合薄板弯曲性能试验研究()
分享到：

西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
52
期数:
2020年01期
页码:
85-91
栏目:
出版日期:
2020-03-31

文章信息/Info

Title:
Study on the bending behavior of PVA-ECC thin compositeplates with steel wire mesh
文章编号:
1006-7930(2020)01-0085-07
作者:
袁微微1; 杜文平2; 杨才千2; 3; 王冲2; 潘勇4; 孟春麟4
(1.中设设计集团股份有限公司,江苏 南京 210000; 2.东南大学 土木工程学院,江苏 南京 210096; 3.湘潭大学 土木工程与力学学院,湖南 湘潭 411100; 4.江苏东部高速公路管理有限公司,江苏 盐城 224002)
Author(s):
YUAN Weiwei1;  DU Wenping2;  YANG Caiqian2; 3;  WANG Chong2;  PAN Yong4;  MENG Chunlin4
(1.China Design Group Co. Ltd., Nanjing 210000, China; 2. School of Civil Engineering, Southeast University, Nanjing 210096, China; 3.College of Civil Engineering and Mechanics, Xiangtan University, Hunan Xiangtan 411100, China; 4. Jiangsu Eastern Expressway Management Co. Ltd., Jiangsu Yancheng 224002, China)
关键词:
PVA-ECC;  钢丝网;  弯曲性能;  刚度比;  裂缝开展
Keywords:
PVA-ECC;  steel wire mesh;  bending behavior;  stiffness ratio;  crack development
分类号:
TU528.28
DOI:
10.15986j.1006-7930.2020.01.012
文献标志码:
A
摘要:
为了研究聚乙烯醇纤维增韧水泥基复合材料(PVA-ECC)和钢丝网协同作用下试件的弯曲性能,本试验共设计了10组复合薄板试件进行四点弯试验,主要考虑钢丝网类型、钢丝网横向连接间距和层数等参数的因素.详细分析了试件失效特性、荷载 - 挠度曲线、强度、刚度和耗能能力.试验结果表明:PVA-ECC与钢丝网协同作用良好,二者结合大幅提升了PVA-ECC的抗弯性能,钢丝网的加入大幅提高了试件的强度、刚度和耗能性能,刚度提高38%以上,极限强度和耗能能力分别提高3倍和4倍以上; 随着钢丝网横向连接间距的增大,试件的力学性呈现出削弱的趋势.试件呈现出显著的应变硬化特性能和“多且密”的多缝开裂延性破坏特征.
Abstract:
To investigate the flexural behavior of Polyvinyl alcohol fiber-engineered cementitious composites(PVA-ECC)reinforced with steel wire mesh, a total of 10 groups of thin plates were investigated and studied under 4-point bending experiments. The key variables include the type, transverse wire spacing, layer number and location of welded wire mesh. The mechanical properties and failure modes of all the specimens were investigated in detail, including the failure modes, load-deflection curves, strength, stiffness and energy dissipation. Results showed that the PVA-ECC can work well with the steel mesh, and that the flexural properties of the PVA-ECC can be importantly upgraded. The stiffness was improved by 38%, and the ultimate strength and energy dissipation were 3 and 4 times higher than the control specimens, respectively. The parameter of transverse wire spacing had an important influence on the mechanical behaviors of the specimens, and they will be weakened with the increase in the transverse wire spacing. Moreover, the failures of the specimens were characterized by a strain-hardening behavior and multiple cracking development characteristics.

参考文献/References:

[1]BATSON G B, CASTRO J O, GUERRA A J, et al. Guide for the design construction and repair of ferrocement[J]. ACI Structural Journal, 1999, 85(3):325-351.
[2]MOUSAVI SE. Flexural response and crack development properties of ferrocement panels reinforced with steel fibers[J]. Journal of Building Engineering, 2017,12:325-331.
[3]ARIF M, PANKAJ, KAUSHIK S K. Mechanical behavior of ferrocement composites: an experimental investigation[J]. Cement & Concrete Composites, 1999, 21(4):301-312.
[4]LI V C, MAALEJ MOHAMED. Flexural/Tensile-strength ratio in engineered cementitious composites [J]. Journal of Materials in Civil Engineering, 1994, 6(4): 513-528.
[5]PAN Z, WU C, LIU J, et al. Study on mechanical properties of cost-effective polyvinyl alcohol engineered cementitious composites(PVA-ECC)[J]. Construction & Building Materials, 2015, 78:397-404.
[6]邓轶涵. 钢筋增强PVA纤维水泥基复合材料梁弯曲性能试验研究[D]. 呼和浩特:内蒙古工业大学, 2015.DENGYihan. Experimental investigation on bending performances of reinforced polyvinyl alcohol fibers reinforced cementitious composite beam[D]. Hohhot: Inner Mongolia University Of Technology, 2015.
[7]ZHANG Y X, UEDA N, UMEDA Y, et al. Evaluation of shear failure of strain hardening cementitious composite beams[J]. Procedia Engineering, 2011, 14(2259):2048-2057.
[8]KIM DJ, NAAMAN AE, El-Tawil S. Comparative flexural behavior of four fiber reinforced cementitious composites[J]. Cement and Concrete Composites, 2008, 30(10):917-928.
[9]SAID S H, RAZAK H A, OTHMAN I. Flexural behavior of engineered cementitious composite(ECC)slabs with polyvinyl alcohol fibers[J]. Construction & Building Materials, 2015, 75:176-188.
[10]LU C, LI VC, LEUNG CKY. Flaw characterization and correlation with cracking strength in Engineered Cementitious Composites(ECC)[J]. Cement and Concrete Research, 2018,107:64-74.
[11]LI J, WU C, LIU Z X. Comparative evaluation of steel wire mesh, steel fiber and high performance polyethylene fiber reinforced concrete slabs in blast tests[J]. Thin-Walled Structures, 2017,126:117-126.
[12]BEHERA GC, RAO TDG, RAO CBK. Torsional behavior of reinforced concrete beams with ferrocement U-jacketing: Experimental study[J]. Case Studies in Construction Materials, 2016,4:15-31.
[13]El-Sayed TA, Erfan AM. Improving shear strength of beams using ferrocement composite[J]. Construction and Building Materials, 2018,172,608-617.
[14]LI B, LAM ESS. Influence of interfacial characteristics on the shear bond behavior between concrete and ferrocement[J]. Construction and Building Materials, 2018,176:462-469.
[15]NASSIF HH, NAJM H. Experimental and analytical investigation of ferrocement-concrete composite beams[J]. Cement and Concrete Composites, 2004,26(7):787-796.

备注/Memo

备注/Memo:
收稿日期:2019-05-18修改稿日期:2020-01-15基金项目:国家自然科学基金项目(50808040); 湖南省重点研发计划基金项目(2018WK2111); 湖南省创投基金项目(2018GK5028)第一作者:袁微微(1982-),男,高级工程师,主要从事桥梁加固和高性能材料研究.E-mail:38836669@qq.com. 通讯作者:杨才千(1974-),男,博士,教授,主要从事高性能复合材料和桥梁加固等研究.E-mail: ycqjxx@seu.deu.cn.
更新日期/Last Update: 2020-04-25