带钢接头的装配式钢筋混凝土梁抗剪性能研究
引用文献：
路辉. 带钢接头的装配式钢筋混凝土梁抗剪性能研究[J]. 建筑结构，2023，48（09）：115-122.
LU Hui. Study on shear behavior of prefabricated reinforced concrete beams with steel joints[J]. Building Structure，2023,48（09）：115-122.
摘要：为研究现有两种带钢接头的装配式钢筋混凝土梁抗剪性能，设计制作了6个钢筋混凝土梁试件进行足尺试验研究，其中包括4个带钢接头的钢筋混凝土梁和2个用于对比的普通钢筋混凝土梁。通过记录各试件的试验现象及破坏形态，测量各试件的抗剪承载力、位移和应变等参数，对试件的抗剪性能与剪切延性进行分析。结果表明：与普通钢筋混凝土梁相比，使用钢接头且下部设置受拉钢板、无纵向受力钢筋的试件极限抗剪承载力有所降低，下部设置纵向受力钢筋的试件极限抗剪承载力提高18.5%～24.5%,剪切延性均有所提高。通过对目前各国现行钢筋混凝土梁抗剪承载力计算方法的适用性评价发现，我国现行规范可较好地预测带钢接头的装配式钢筋混凝土梁的抗剪承载力。
关键词：装配式钢筋混凝土梁；钢接头；抗剪性能；剪切延性；
基金：辽宁省应用基础研究计划（2022JH2/101300130）。
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[3] 冯屾，靳静.桁架结构在装配式建筑中的设计与应用[J].工业建筑，2021,51(9):253.
[4] 王建刚，张清，李智军，等.装配式梁-柱-牛腿组合节点承载性能分析[J].工业建筑，2021,51(1):68-72.
[5] 余洁，王宇航，刘界鹏，等.装配整体式预应力钢-混凝土组合梁负弯矩区开裂刚度研究[J].建筑结构学报，2019,40(S1):316-324.
[6] 张再华，舒兴平，贺冉，等.全装配式桁架梁组合楼盖平面内刚性性能分析及评估[J].建筑结构学报，2017,38(8):105-112.
[7] YANG K H,OH M H,KIM M H,et al.Flexural behavior of hybrid precast concrete beams with H-steel beams at both ends[J].Engineering Structures,2010,32(9):2940-2949.
[8] 程东辉，王彦松，孙常海.型钢连接节点装配式混凝土梁力学性能研究[J].沈阳建筑大学学报(自然科学版),2020,36(5):788-797.
[9] 赵森，雷政，马春祥.装配式波形钢腹板工字型组合梁试设计[J].山西建筑，2017,43(21):138-141.
[10] 刘昌永，王庆贺，王玉银，等.带钢接头的装配式钢筋混凝土梁受弯性能研究[J].建筑结构学报，2013,34(S1):208-214.
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[12] 金属材料拉伸试验第1部分：室温试验方法：GB/T 228.1—2021[S].北京：中国建筑工业出版社，2021.
[13] YU LIANG X,AHMAD S H.Shear ductility of reinforced concrete beams of normal and high-strength concrete[J].ACI Structural Journal,1994,91(2):140-149.
[14] 混凝土结构设计规范：GB 50010—2015[S].北京：中国建筑工业出版社，2015.
[15] Building code requirements for structural concrete and commentary:ACI 318-11[S].Farmington Hills,MI:American Concrete Institute,2011.
[16] Eurocode2:design of concrete structures-part 1-1:general rules and rules for buildings:ENV 1992-1-2[S].Brussels:European Committee for Standardization (CEN),2004.
Study on shear behavior of prefabricated reinforced concrete beams with steel joints
Abstract: In order to explore the shear behavior of the existing two types of prefabricated reinforced concrete beams with steel joints, six specimens of reinforced concrete beams were designed and manufactured for full scale test study, including four reinforced concrete beams with steel joints and two ordinary reinforced concrete beams for comparison. By recording the test phenomenon and failure pattern of each specimen, and measuring the shear bearing capacity, displacement and strain parameters of each specimen, the shear behavior and shear ductility of the specimen were analyzed. The results show that compared with ordinary reinforced concrete beams, the ultimate shear bearing capacity of the specimens with steel joints, tensile steel plates and no longitudinal reinforcement is reduced, the ultimate shear bearing capacity of specimens with longitudinal reinforcement is increased by 18.5%～24.5%, and the shear ductility of specimens using steel joints is improved. Through the applicability evaluation of the current calculation method of shear bearing capacity of reinforced concrete beams in various countries, it is found that China's specifications can better predict the shear bearing capacity of prefabricated reinforced concrete beams with steel joints.
Keywords: prefabricated reinforced concrete beam; steel joint; shear behavior; shear ductility
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