十字带侧翼缘型剪力连接件的抗剪承载力研究
引用文献：
姜俊 郭琪 胡淑军. 十字带侧翼缘型剪力连接件的抗剪承载力研究[J]. 建筑结构，2022，48（06）：32-37，17.
JIANG Jun GUO Qi HU Shujun. Research on shear bearing capacity for cross-bilinear-type shear connector[J]. Building Structure，2022,48（06）：32-37，17.
摘要：采用校正的有限元法(FEM)对一字型、十字型和十字带侧翼缘型剪力连接件(CB-type)的抗剪承载力和破坏模式进行了分析。基于对比上述三种剪力连接件的极限承载力、应力和混凝土损伤得到十字带侧翼缘型剪力连接件的力学性能最优，建议将其优先用于弯剪分离的装配式混凝土梁-耗能段组合节点中。进一步对十字带侧翼缘型剪力连接件力学性能的影响因素进行了研究，结果表明：各模型的混凝土损伤区域和损伤深度均较小，具有承载能力高、变形小、预定荷载作用下混凝土损伤极小的优点；增大混凝土强度可有效提高十字带侧翼缘型剪力连接件的承载力，并且在预定荷载下，可有效降低混凝土损伤值；十字带侧翼缘型剪力连接件长度和两侧翼缘板高度对十字带侧翼缘型剪力连接件的混凝土损伤无明显影响。
关键词：装配式混凝土结构，耗能段，剪力连接件，抗剪承载力
基金：国家自然科学基金项目(51908268)；江西省博士后科研择优资助项目(2019KY57)；住房和城乡建设部科学技术计划项目(2021-K-076)。
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[8] HU S J,XIONG J G,ZHOU Q,et al.Analytical and numerical investigation of overstrength factors for very short shear links in EBFs[J].KSCE Journal of Civil Engineering,2018,22(11):4473-4382.
[9] CHUNG C H,LEE J,KIM J S.Shear strength of T-type perfobond rib shear connectors[J].KSCE Journal of Civil Engineering,2016,20(5):1824-1834.
[10] ZHAI C H,LU B,WEN W,et al.Experimental study on shear behavior of studs under monotonic and cyclic loadings[J].Journal of Constructional Steel Research,2018,151:1-11.
[11] KIM S H,HAN O,KIM K S,et al.Experimental behavior of double-row Y-type perfobond rib shear connectors[J].Journal of Constructional Steel Research,2018,150:221-229.
[12] 陈海，郭子雄，刘阳，等.新型组合剪力键抗剪机理及承载力计算方法研究[J].工程力学，2019,36(3):159-169.
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[15] DENG W Q,XIONG Y Q,LIU D,et al.Static and fatigue behavior of shear connectors for a steel-concrete composite girder[J].Journal of Constructional Steel Research,2019,159:134-146.
[16] 混凝土结构设计规范：GB 50010—2010[S].2015年版.北京：中国建筑工业出版社，2015.
[2] 胡淑军，熊悦辰，王湛.偏心支撑结构体系的研究进展及展望[J].建筑钢结构进展，2019,21(2):1-14.
[3] 徐其功.装配式混凝土结构设计[M].北京：中国建筑工业出版社，2017.
[4] 郭琪，宋固全，胡淑军，等.装配式混凝土框架梁-耗能段连接节点的力学性能[J].南昌大学学报(工科版),2019,41(4):345-351.
[5] 吕西林，武大洋，周颖.可恢复功能防震结构研究进展[J].建筑结构学报，2019,40(2):1-15.
[6] 赵宝成，于安林，王军良，等.内填Y形钢支撑加固多层钢筋混凝土框架结构滞回性能试验研究[J].建筑结构学报，2013,34(8):107-118.
[7] 胡淑军，聂吉利，熊信福，等.一种基于弯剪分离的装配式混凝土梁-耗能段组合节点：ZL 201910643327.3 [P].2019-09-20.
[8] HU S J,XIONG J G,ZHOU Q,et al.Analytical and numerical investigation of overstrength factors for very short shear links in EBFs[J].KSCE Journal of Civil Engineering,2018,22(11):4473-4382.
[9] CHUNG C H,LEE J,KIM J S.Shear strength of T-type perfobond rib shear connectors[J].KSCE Journal of Civil Engineering,2016,20(5):1824-1834.
[10] ZHAI C H,LU B,WEN W,et al.Experimental study on shear behavior of studs under monotonic and cyclic loadings[J].Journal of Constructional Steel Research,2018,151:1-11.
[11] KIM S H,HAN O,KIM K S,et al.Experimental behavior of double-row Y-type perfobond rib shear connectors[J].Journal of Constructional Steel Research,2018,150:221-229.
[12] 陈海，郭子雄，刘阳，等.新型组合剪力键抗剪机理及承载力计算方法研究[J].工程力学，2019,36(3):159-169.
[13] ZHAO H,NIE X,ZHU D,et al.Mechanical properties of novel out-of-plane steel beam-concrete wall pinned joints with T-shaped steel connectors under monotonic tension load[J].Engineering Structures,2019,192:71-85.
[14] CAO J H,SHAO X D.Finite element analysis of headed studs embedded in thin UHPC[J].Journal of Constructional Steel Research,2019,161:355-368.
[15] DENG W Q,XIONG Y Q,LIU D,et al.Static and fatigue behavior of shear connectors for a steel-concrete composite girder[J].Journal of Constructional Steel Research,2019,159:134-146.
[16] 混凝土结构设计规范：GB 50010—2010[S].2015年版.北京：中国建筑工业出版社，2015.
Research on shear bearing capacity for cross-bilinear-type shear connector
Abstract: The shear bearing capacity and failure mode of linear-type shear connector, cross-type shear connector and cross-bilinear-type(CB-type) shear connector were detail analyzed by using verified finite element method(FEM). Based on the comparison of the ultimate bearing capacity, stress and concrete damage of the above three types of shear connector, it is concluded that the mechanical properties of CB-type shear connector is the best, and it is recommended that it should be preferentially used in the prefabricated reinforced concrete beam-energy-dissipation composite joint with bending-shear separation. The influencing factors of the mechanical properties of CB-type shear connector were further researched, and the results indicate that the damage zone and damage depth of concrete for all designed models are both small, which have the advantage of high bearing capacity, little deformation and little concrete damage at predefined load. In addition, the bearing capacity of CB-type shear connector will be effectively improved by increasing the concrete strength, while reduce the concrete damage degree at predefined load. The shear connector length and end vertical flange height have no obvious impact on the concrete damage of CB-type shear connector.
Keywords: prefabricated reinforced concrete structure; shear link; shear connector; shear bearing capacity
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