基于UHPC-钢筋错位连接的预制装配式混凝土梁抗弯性能研究

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发布时间：2020-01-06 00:00:00

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基于UHPC-钢筋错位连接的预制装配式混凝土梁抗弯性能研究

Flexural behavior of fabricated concrete beams with staggered rebars connection based on UHPC

2023年第1期

超高性能混凝土；钢筋错位连接；预制装配式混凝土梁；抗弯性能；承载力；有限元

Ultra-high performance concrete(UHPC); Staggered rebar connection; Fabricated concrete beam; Flexural behavior; Bearing capacity; Finite element

2023年第1期

10.19761/j.1000-4637.2023.09.047.07

国家重点研发计划资助项目（2019YFC1904705）；湖南省自然科学基金项目（2023JJ70025、2023JJ30611）。

李新星1,2，周泉1,2，李水生1,2

1.中国建筑第五工程局有限公司，湖南长沙 410004；2.湖南中建五局绿色市政工程研究中心有限公司，湖南长沙 410001

李新星1,2，周泉1,2，李水生1,2

李新星,周泉,李水生.基于UHPC-钢筋错位连接的预制装配式混凝土梁抗弯性能研究[J].混凝土与水泥制品,2023(9):47-53.

LI X X,ZHOU Q,LI S S.Flexural behavior of fabricated concrete beams with staggered rebars connection based on UHPC[J].China Concrete and Cement Products,2023(9):47-53.

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摘要：提出了一种适用于预制装配式混凝土梁的UHPC-钢筋错位连接节点形式，试制了1根现浇混凝土梁和2根预制混凝土梁试件，通过抗弯性能对比试验，研究了钢筋错位搭接长度（10d、15d）对试件抗弯性能的影响，并采用ABAQUS有限元软件对试件进行了抗弯性能分析。结果表明：UHPC-错位钢筋节点未出现开裂，破坏过程与现浇混凝土梁相似，均为适筋破坏，错位钢筋未发生屈服和黏结滑移；当搭接长度为10d时，预制混凝土梁的极限承载力和延性基本等同现浇结构；增大搭接长度（15d）对开裂弯矩影响不明显，极限弯矩提高较明显；根据相关规范，建议实际工程中错位钢筋搭接长度取10d；ABAQUS有限元数值模拟结果与试验结果吻合程度较高。 Abstract: A joint connection form for fabricated concrete beams between UHPC-staggered rebars was proposed, a cast-in-situ concrete beam and two fabricated concrete beams(overlapping length of 10d and 15d respectively) were produced. The influence of different overlapping length on the flexural behavior of the fabricated concrete beams was analyzed. And the flexural behavior of the specimens was analyzed by using ABAQUS finite element software. The results show that there is no crack at the connection joint, and the failure process of which is similar to that of the cast-in-situ concrete beams, all of them are damaged by suitable reinforcement, and the staggered rebars do not yield and bond slip. When the overlapping length is 10d, the ultimate bearing capacity and ductility of the prefabricated beams are basically equal to those of the cast-in-situ concrete beams. Increasing the overlapping length has no obvious effect on the cracking moment, but the ultimate moment can be increased obviously. According to relevant regulations, the overlapping length of the staggered rebar in the actual project is suggested as 10d. The numerical simulation results based on ABAQUS are in good agreement with the experimental results.

英文名 : Flexural behavior of fabricated concrete beams with staggered rebars connection based on UHPC

刊期 : 2023年第1期

关键词 : 超高性能混凝土；钢筋错位连接；预制装配式混凝土梁；抗弯性能；承载力；有限元

Key words : Ultra-high performance concrete(UHPC); Staggered rebar connection; Fabricated concrete beam; Flexural behavior; Bearing capacity; Finite element

刊期 : 2023年第1期

DOI : 10.19761/j.1000-4637.2023.09.047.07

文章编号 :

基金项目 : 国家重点研发计划资助项目（2019YFC1904705）；湖南省自然科学基金项目（2023JJ70025、2023JJ30611）。

作者 : 李新星1,2，周泉1,2，李水生1,2

单位 : 1.中国建筑第五工程局有限公司，湖南长沙 410004；2.湖南中建五局绿色市政工程研究中心有限公司，湖南长沙 410001

李新星1,2，周泉1,2，李水生1,2

李新星,周泉,李水生.基于UHPC-钢筋错位连接的预制装配式混凝土梁抗弯性能研究[J].混凝土与水泥制品,2023(9):47-53.

LI X X,ZHOU Q,LI S S.Flexural behavior of fabricated concrete beams with staggered rebars connection based on UHPC[J].China Concrete and Cement Products,2023(9):47-53.

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摘要

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结论

参考文献

引用本文

Abstract: A joint connection form for fabricated concrete beams between UHPC-staggered rebars was proposed, a cast-in-situ concrete beam and two fabricated concrete beams(overlapping length of 10d and 15d respectively) were produced. The influence of different overlapping length on the flexural behavior of the fabricated concrete beams was analyzed. And the flexural behavior of the specimens was analyzed by using ABAQUS finite element software. The results show that there is no crack at the connection joint, and the failure process of which is similar to that of the cast-in-situ concrete beams, all of them are damaged by suitable reinforcement, and the staggered rebars do not yield and bond slip. When the overlapping length is 10d, the ultimate bearing capacity and ductility of the prefabricated beams are basically equal to those of the cast-in-situ concrete beams. Increasing the overlapping length has no obvious effect on the cracking moment, but the ultimate moment can be increased obviously. According to relevant regulations, the overlapping length of the staggered rebar in the actual project is suggested as 10d. The numerical simulation results based on ABAQUS are in good agreement with the experimental results.

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[1] 中华人民共和国住房和城乡建设部.装配式混凝土结构技术规程:JGJ 1—2014[S].北京:中国建筑工业出版社,2014.
[2] HU A X，LIANG X W，YU J,et al.Tensile characteristics of ultra-high-performance concrete[J].Magazine of Concrete Research,2018,70(6):314-324.
[3] BIAN C,WANG J Y.Mechanical and damage mechanisms of reinforced ultra high performance concrete under tensile loading [J].Construction and Building Materials,2019,226:259-279.
[4] 刘建忠,韩方玉,周华新,等.超高性能混凝土拉伸力学行为的研究进展[J].材料导报,2017,31(23):24-32.
[5] 邵旭东,樊伟,黄政宇.超高性能混凝土在结构中的应用[J].土木工程学报,2021,54(1):1-13.
[6] 郑文忠,李莉,卢姗姗.钢筋活性粉末混凝土简支梁正截面受力性能试验研究[J].建筑结构学报,2011,32(6):125-134.
[7] 徐明雪,梁兴文,汪萍,等.超高性能混凝土梁正截面受弯承载力理论研究[J].工程力学,2019,36(8):70-78.
[8] YANG I H,JOH C,KIM B S.Structural behavior of ultra high performance concrete beams subjected to bending[J].Engineering Mechanics,2010,32(11):3478-3487.
[9] YOO D Y,YOON Y S.Structural performance of ultra-high-performance concrete beams with different steel fibers[J].Engineering Structures,2015,102:409-423.
[10] 邓宗才,王义超,肖锐,等.高强钢筋UHPC梁抗弯性能试验研究与理论分析[J].应用基础与工程科学学报,2015,23(1):68-78.
[11] 苏家战,傅元方,黄卿维,等.钢筋超高性能混凝土梁受弯试验和有限元分析研究[J].中外公路,2017,37(6):99-105.
[12] QIU M H,SHAO X D,ZHU Y P,et al.Experimental investigation on flexural cracking behavior of ultra high performance concrete beams[J].Structural Concrete,2020,21(5):2134-2153.
[13] 梁兴文,汪萍,徐明雪,等.配筋超高性能混凝土梁受弯性能及承载力研究[J].工程力学,2019,36(5):110-119.
[14] 冯军骁,郑七振,龙莉波,等.超高性能混凝土连接的预制梁受弯性能试验研究[J].工业建筑,2017,47(8):59-65.
[15] 郑七振,刘阳阳,龙莉波,等.超高性能混凝土连接的装配式现浇混凝土框架抗震性能[J].工业建筑,2019,49(10):85-91.
[16] SHAFIEIFAR M,FARZAD M,AZIZINAMINI A.New connection detail to connect precast column to cap beam using ultra-high-performance concrete in accelerated bridge construction applications[J].Transportation Research Record, 2018,2672(41):207-220.
[17] KIM Y J,CHIN W J,JEON S J.Interface shear strength at joints of ultra-high performance concrete structures [J].International Journal of Concrete Structures and Materials, 2018,12(1):1-14.

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基于UHPC-钢筋错位连接的预制装配式 混凝土梁抗弯性能研究

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