带肋纤维混凝土结合面竖向抗剪强度试验研究
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摘要
制作了21组(126个)不同肋数、不掺加和掺加不同纤维的混凝土试件,进行了新老混凝土结合面竖向抗剪强度试验。结果表明:带肋试件平均抗剪强度均高于无肋试件;掺加纤维试件抗剪强度均高于同肋数不掺加试件;掺加钢纤维的2条肋试件和所有掺加纤维的3条肋试件的抗剪强度均大于素混凝土整体抗剪强度。该成果可为肋形模板的推广使用提供依据,也可为混凝土结构加固提供参考。
The production of 21 groups(126) different rib number,not added and mixed with different fiber concrete specimens of new old concrete interface vertical shear strength test,the results show that the ribbed specimens were higher than the average shear strength of specimens without rib,adding fiber shear strength higher than the same number of test pieces with ribs and the 2 ribs with steel fiber were 3 ribs and all fiber specimens of shear strength are greater than the overall shear strength of plain concrete.The results can provide a basis for the popularization and use of rib formwork,and can also provide reference for the reinforcement of concrete structures.
The production of 21 groups(126) different rib number,not added and mixed with different fiber concrete specimens of new old concrete interface vertical shear strength test,the results show that the ribbed specimens were higher than the average shear strength of specimens without rib,adding fiber shear strength higher than the same number of test pieces with ribs and the 2 ribs with steel fiber were 3 ribs and all fiber specimens of shear strength are greater than the overall shear strength of plain concrete.The results can provide a basis for the popularization and use of rib formwork,and can also provide reference for the reinforcement of concrete structures.
引文
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[13] 张雷顺,闫国新,张晓磊,等.沟槽式新老混凝土粘结面抗剪强度试验研究[J].郑州大学学报(工学版),2006,27(2):22-28.
[2] 薛洲海,叶燕华,孙锐,等.双板预制混凝土剪力墙中的自密实混凝土模板侧向压力[J].南京工业大学学报(自然科学版),2014,36(3):106-110.
[3] 张大长,郭雁,李布辉.外壳预制核心现浇装配式T型钢筋混凝土节点抗震性能试验研究[J].工程力学,2013,30(1):156-162.
[4] 王滋军,王宇,刘伟庆,等.新型钢筋混凝土叠合剪力墙结构在我国的研究与应用现状[J].混凝土,2012,277(11):108-110.
[5] 王振领,林拥军,钱永久.新老混凝土结合面抗剪性能试验研究[J].西南交通大学学报,2005,40(5):600-604.
[6] 靳利娜,王山山,任青文,等.新老混凝土结合面抗剪性能试验研究[J].实验力学,2014,29(5):611-619.
[7] 高剑平,潘景龙,王雨光.不同界面剂对新旧混凝土粘结强度影响的试验研究[J].哈尔滨建筑大学学报,2001,34(5):25-29.
[8] 周乾,张亚仿,荀勇,等.肋形混凝土永久模板与混凝土结合面抗拉强度试验[J].建筑科学,2015(3):78-82.
[9] 周乾,张亚仿,荀勇,等.肋形混凝土永久模板与新浇混凝土结合面抗剪强度试验研究[J].混凝土与水泥制品,2015(1):57-60.
[10] HEGGER J,VOSS S.Investigations on the bearing beheviour and application potential of textile reinforced concrete[J].Eng Struct,2008,30(7):2050-2056.
[11] YIN S P ,XU S L ,LI H D .Improved mechanical properties of textile reinforced concrete thin plate[J].Journal of Wuhan University of Technology—Mater,2013,28(1):92-98.
[12] 张雷顺,闫国新,张晓磊.新老混凝土切槽法结合面抗剪性能试验研究分析[J].工业建筑,2007,37(6):101-103.
[13] 张雷顺,闫国新,张晓磊,等.沟槽式新老混凝土粘结面抗剪强度试验研究[J].郑州大学学报(工学版),2006,27(2):22-28.