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Abstract

A joint with looped reinforcement is a type of steel bar connection structure with wet joints characterized by quick construction.In order to study the bending and shear stress performance and load-bearing capacity characteristics of the wet joints,four bearing capacity tests for bending and shear were designed and conducted for common application scenarios.The load,strain,and displacement changes of the specimens during the test process were tested,and the failure characteristics,load–displacement changes,and ultimate bearing capacity of this type of wet joint were analyzed.The results show that the wet joint with looped reinforcement has good ductility and conforms to the design principles of reinforced concrete.The failure mode of the specimens under bending and shear is similar to that under bending,with the compressive side of the concrete collapsing after the crack develops and losing its bearing capacity.This proves that the joint with looped reinforcement is a reliable form of wet joint connection,and the measured ultimate bearing capacity is greater than the design internal force of the corresponding scenario.It has good bearing capacity under bending and shear stress conditions.

Publication Date

12-24-2025

DOI

10.14048/j.issn.1671-2579.2025.06.019

First Page

167

Last Page

173

Submission Date

December 2025

Reference

[1]廖万成,赵华,安家禾.预制拼装钢 -UHPC组合桥面板湿 接 缝 抗 弯 性 能 研 究 [J].中 外 公 路,2024,44(1):102-110.LIAO Wancheng,ZHAO Hua,AN Jiahe.Study on flexural behavior of wet joints of prefabricated steel-UHPC composite bridge deck [J].Journal of China & Foreign Highway,2024,44(1):102-110.
[2]刘政伟,夏齐勇,邹黎琼,等.先简支后连续变截面预制小箱梁设计 [J].中外公路,2020,40(4):147-150.LIU Zhengwei,XIA Qiyong,ZOU Liqiong,et al.Design of precast small box-girder with variable cross-section of continuous bridge transformed from simply-supported structure [J].Journal of China & Foreign Highway,2020,40(4):147-150.
[3]张军锋,裴昊,李杰,等.节段预制拼装城市高架桥工程实践与思考 [J].中外公路,2022,42(2):147-151.ZHANG Junfeng,PEI Hao,LI Jie,et al.Engineering practice and reflection on precast segmental assembling of urban viaducts [J].Journal of China & Foreign Highway,2022,42(2):147-151.
[4]岳秀鹏,肖靖林,甄倩倩,等.超高性能混凝土桥面板湿接缝受力性能试验研究 [J].土木工程学报,2023,56(8):94-107.YUE Xiupeng,XIAO Jinglin,ZHEN Qianqian,et al.Experimental study on mechanical behavior of wet joints in ultra-high-performance concrete decks [J].China Civil Engineering Journal,2023,56(8):94-107.
[5]LEWIS S.Experimental investigation of precast bridge deck joints with u-bar and headed bar joint details [J].2009.
[6]樊天望.钢混组合梁预制桥面板环形钢筋接缝性能试验研究 [D].上海:同济大学,2017.FAN Tianwang.Experimental study on joint performance of annular reinforcement in precast bridge deck of steel-concrete composite beam [D].Shanghai:Tongji University,2017.
[7]DRAGOSAVIC M,BEUKE L A V D,GIJSBERS F B J.Loop connections between precast concrete components loaded in bending [J].Heron (Delft ),1975,20(3):3-36.
[8]ZALESOV A S,KIRILLOV A P,RUBIN O D,et al.Calculation of the strength and design of welding loops and linear anchor joints in combined precast-in situ reinforced concrete members [J].Hydrotechnical Construction,1989,23(2):120-124.
[9]朱玉,丁德豪.预制混凝土梁湿接缝环形钢筋搭接长度研究 [J].公路,2015,60(12):89-93.ZHU Yu,DING Dehao.Research on the overlap length of looped bars in cast-in-place joint for precast concrete girder systems [J].Highway,2015,60(12):89-93.
[10]JØRGENSEN H B.Strength of loop connections between precast concrete elements [J].Department of Technology and Innovation,2014:423.
[11]NG C S.Loop connections for precast components,bachelor of engineering (civil ) dissertation [D].Singapore:National University of Singapore,2002.
[12]TAN C K.Loop connections for precast components,bachelor of engineering (civil ) dissertation [D].Singapore:National University of Singapore,1998.
[13]YEO S A.Loop connections for Precast Components,bachelor of engineering (civil ) dissertation [D].Singapore:National University of Singapore,1999.
[14]LOK P K.Loop connections for precast components,bachelor of engineering (civil ) dissertation [D].Singapore:National University of Singapore,2000.
[15]ONG K C G,HAO J B,PARAMASIVAM P.A strut-and-tie model for ultimate loads of precast concrete joints with loop connections in tension [J].Construction and Building Materials,2006,20(3):169-176.
[16]申雁鹏,郭文龙,韩之江,等.混凝土桥面板湿接缝纯弯破坏行为试验研究 [J].桥梁建设,2019,49(3):34-39.SHEN Yanpeng,GUO Wenlong,HAN Zhijiang,et al.Experimental study on pure bending failure behavior of wet joint of concrete bridge deck [J].Bridge Construction,2019,49(3):34-39.
[17]董夏鑫,李国平,易道远,等.基于剪摩擦理论的 U形筋接缝强度计算方法 [J].中国市政工程,2019 (2):84-88,142.DONG Xiaxin,LI Guoping,YI Daoyuan,et al.Strength calculation method of U-shaped reinforcement joint based on shear friction theory [J].China Municipal Engineering,2019 (2):84-88,142.
[18]林上顺,暨邦冲,何永波,等.配置环形钢筋的梁桥湿接缝承载力计算方法比较研究 [J].工业建筑,2022,52(1):83-89,58.LIN Shangshun,JI Bangchong,HE Yongbo,et al.Comparative research on calculation methods for bearing capacity of wet joints of beam bridges equipped with circular steel bars [J].Industrial Construction,2022,52(1):83-89,58.
[19]王志刚,王志海.钢筋环形连接混凝土裂缝模型分析 [J].公路,2017,62(10):116-119.WANG Zhigang,WANG Zhihai.Model analysis of concrete cracks in reinforced circular connection [J].Highway,2017,62(10):116-119.
[20]谢亚宁,周彦锋,Marwan Nader.加拿大尚普兰大桥设计[J].中外公路,2025,45(3):251-260.XIE Yaning,ZHOU Yanfeng,Marwan Nader.Design of champlain bridge in canada [J].Journal of China & Foreign Highway,2025,45(3):251-260.
[21]谢鹏飞.预制装配桥面板环形钢筋接缝受力性能研究[D].上海:同济大学,2019.XIE Pengfei.Study on the mechanical behavior of precast bridge deck joints with loop connections [D].Shanghai:Tongji University,2019.

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