Research on Seismic Performance of Precast Concrete Beam-Column Joints with Bolt-Plate Mechanical Connection
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摘要:
为简化预制混凝土梁柱节点的连接构造并提高施工效率，本文提出一种预制混凝土梁柱栓板机械连接节点. 通过7个试件的拟静力荷载试验，分析了高强螺栓、梁纵筋配筋率、锚固长度和方式、放大头表面预埋钢板等因素对节点抗震性能的影响. 结果表明：该节点具备优异的承载力与延性性能，机械连接可靠，延性系数介于3.79 ～ 5.69，可以实现梁端塑性铰破坏与“强节点”延性设计目标；梁纵筋锚固长度由200 mm增至300 mm时，节点峰值承载力、延性系数和累积耗能分别提高24.38%、16.36%和38.08%；放大头表面预埋钢板可使节点峰值承载力和延性系数分别提升18.69%和13.29%；当梁纵筋配筋率从0.75%增至1.18%时，试件的破坏模式由梁端弯剪破坏转变为放大头楔形体破坏，峰值承载力和累积耗能分别增长20.65%和20.30%，但延性系数下降16.34%. 后续研究应重点优化螺栓锚固边距与间距、放大头沿梁方向配筋等参数，确保塑性铰合理形成于梁端，实现“强节点”延性设计目标.
Abstract:To simplify the connection construction of precast concrete beam-column joints and improve construction efficiency, a precast beam-column joint with bolt-plate mechanical connection was proposed. The pseudo-static loading tests of seven specimens were carried out to analyze the effects of high-strength bolts, longitudinal reinforcement ratio of the beam, anchorage length and methods, as well as embedded steel plates on the enlarged head surface on the seismic performance of the joints. Results show that the joints exhibit excellent bearing capacity and ductility, with a reliable mechanical connection and a ductility coefficient of 3.79–5.69. The targets of plastic hinge failure at the beam end and the ductile design principle of “strong joint” can be achieved. When the anchorage length of longitudinal reinforcement of the beam is increased from 200 mm to 300 mm, the joint’s peak bearing capacity, ductility coefficient, and cumulative energy dissipation can be enhanced by 24.38%, 16.36%, and 38.08%, respectively. The peak bearing capacity and ductility coefficient of the joint with embedded steel plates on the enlarged end surface can be increased by 18.69% and 13.29%, respectively. While the reinforcement ratio of longitudinal reinforcement of the beam is increased from 0.75% to 1.18%, the failure mode of the specimen transfers from flexural-shear failure at the beam end to wedge-shaped failure at the enlarged head. The peak bearing capacity and cumulative energy dissipation can be improved by 20.65% and 20.30%, but the ductility coefficient decreases by 16.34%. Optimizing bolt edge distance and spacing, as well as enhancing the parameters including reinforcement along the beam direction on the enlarged head are recommended for subsequent research, thereby ensuring the rational formation of a plastic hinge at the beam end and ultimately achieving the ductile design principle of “strong joint”.
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Key words:
- precast concrete /
- beam-column joint /
- bolt-plate /
- pseudo-static test /
- seismic performance
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表 1 试件的基本参数
Table 1. Basic parameters of specimens
试件
编号梁纵筋 锚固长度/mm 高强螺栓 并筋
锚固预埋
钢板CBC-1 3C20 200 8*M20 是 否 CBC-2 3C16 200 8*M16 是 否 CBC-3 3C25 300 12*M20 是 否 CBC-4 3C20 300 10*M20 是 否 CBC-5 3C20 200 4*M16 + 4*M22 是 否 CBC-6 3C20 200 8*M20 否 否 CBC-7 3C20 200 8*M20 是 是 
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表 3 延性系数的计算过程及结果
Table 3. Calculation process and results of ductility coefficient
试件编号 位置 Py/kN Δy/mm Pu/kN Δu/mm $ \overline{\mu } $ CBC-1 正 161.26 8.86 156.47 47.91 4.89 反 −162.15 −10.13 −157.45 −44.23 CBC-2 正 122.78 8.82 135.09 36.47 3.79 反 −117.53 −7.39 −110.49 −25.47 CBC-3 正 215.46 11.61 253.68 53.68 4.56 反 −236.79 −12.30 −275.67 −54.74 CBC-4 正 170.34 9.08 221.75 50.52 5.69 反 −192.56 −9.00 −231.14 −52.38 CBC-5 正 146.45 7.42 148.05 39.60 5.08 反 −192.53 −10.42 −184.32 −50.17 CBC-6 正 172.89 10.61 171.56 45.29 4.76 反 −155.21 −8.98 −157.82 −47.16 CBC-7 正 138.03 10.02 189.70 55.71 5.54 反 −142.72 −9.11 −182.90 −50.18
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表 4 连接强度计算
Table 4. Calculation of connection strength
试件
编号N/kN d/mm lb/mm Ft/kN 差值/% 理论值 试验峰值 CBC-1 1020 20 200 226.76 184.66 18.57 CBC-2 660 16 200 154.33 129.99 15.77 CBC-3 1530 25 300 366.86 277.10 24.47 CBC-4 1360 20 300 312.26 229.68 26.45 CBC-5 1060 20 200 233.32 195.51 16.21 CBC-6 1020 20 200 226.76 193.75 14.56 CBC-7 1020 20 200 226.76 204.86 9.66
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表 5 放大头后锚承载力
Table 5. Post-installed anchorage bearing capacity at enlarged head
试件
编号es /mm Ft/kN 差值/% 理论值 试验值 CBC-1 40.00 131.22 161.71 18.85 CBC-3 42.50 180.38 226.13 20.23 CBC-5 40.00 131.22 169.49 22.58 CBC-6 40.00 131.22 164.05 20.01 CBC-7 40.00 131.22 140.38 6.52
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表 6 放大头后锚承载力的优化计算
Table 6. Optimization calculation of post-installed anchorage bearing capacity at enlarged head
$ {\rho }_{{\mathrm{b}}} $
/%$ {c}_{1} $
/mm$ {s}_{1} $
/mm$ {\rho }_{{\mathrm{f}}} $
/%理论承载力/kN 破坏
截面梁端 放大头 0.48 50 100 0.44 110.22 131.68 梁端 0.75 50 100 0.44 170.52 131.22 放大头后锚 100 100 0.44 170.52 191.44 梁端 50 200 0.44 170.52 181.67 梁端 50 100 0.69 170.52 202.16 梁端 1.08 50 100 0.44 273.96 130.32 放大头后锚 200 100 0.44 273.96 296.11 梁端 100 100 0.69 273.96 293.00 梁端 50 200 0.69 273.96 278.94 梁端 50 100 1.18 273.96 310.72 梁端
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[1] Zhu Y Q, Wu J, Xie L Q. Experimental investigation on hysteretic performance and deformation patterns of single-side yielding precast concrete beam–column connection with energy dissipation bars[J]. Engineering Structures, 2021, 245: 112841. doi: 10.1016/j.engstruct.2021.112841 [2] Zhang Z Y, Ding R, Nie X, et al. Seismic performance of a novel interior precast concrete beam-column joint using ultra-high performance concrete[J]. Engineering Structures, 2020, 222: 111145. doi: 10.1016/j.engstruct.2020.111145 [3] 王静峰, 王新乐, 李贝贝, 等. 屈曲约束支撑装配式混凝土框架结构抗震性能试验研究[J]. 土木工程学报, 2018, 51(12): 72-80. doi: 10.15951/j.tmgcxb.2019.07.008Wang Jingfeng, Wang Xinle, Li Beibei, et al. Experimental studies on seismic performance of prefabricated concrete frame structures with buckling-restrained braces[J]. China Civil Engineering Journal, 2018, 51(12): 72-80. doi: 10.15951/j.tmgcxb.2019.07.008 [4] 闫维明, 王文明, 陈适才, 等. 装配式预制混凝土梁-柱-叠合板边节点抗震性能试验研究[J]. 土木工程学报, 2010, 43(12): 56-61. doi: 10.15951/j.tmgcxb.2010.12.012Yan Weiming, Wang Wenming, Chen Shicai, et al. Experimental study of the seismic behavior of precast concrete layered slab and beam to column exterior joints[J]. China Civil Engineering Journal, 2010, 43(12): 56-61. doi: 10.15951/j.tmgcxb.2010.12.012 [5] Yan Q S, Chen T Y, Xie Z Y. Seismic experimental study on a precast concrete beam-column connection with grout sleeves[J]. Engineering Structures, 2018, 155: 330-344. doi: 10.1016/j.engstruct.2017.09.027 [6] 赵作周, 韩文龙, 钱稼茹, 等. 钢筋套筒挤压连接装配整体式梁柱中节点抗震性能试验研究[J]. 建筑结构学报, 2017, 38(4): 45-53.Zhao Zuozhou, Han Wenlong, Qian Jiaru, et al. Experimental study on seismic behavior of assembled monolithic beam-column interior joints with rebar spliced by pressed sleeve[J]. Journal of Building Structures, 2017, 38(4): 45-53. [7] 陈庆军, 潘忠尧, 蔡健, 等. 冷挤压套筒连接装配式梁柱节点抗震性能试验研究[J]. 东南大学学报(自然科学版), 2019, 49(5): 918-925. doi: 10.3969/j.issn.1001-0505.2019.05.015Chen Qingjun, Pan Zhongyao, Cai Jian, et al. Experimental research on seismic behaviors of assembled beam-column joints with rebars spliced by pressed sleeves[J]. Journal of Southeast University (Natural Science Edition), 2019, 49(5): 918-925. doi: 10.3969/j.issn.1001-0505.2019.05.015 [8] 黄祥海. 新型全预制装配式混凝土框架节点的研究[D]. 南京: 东南大学, 2006. [9] Wang H S, Marino E M, Pan P, et al. Experimental study of a novel precast prestressed reinforced concrete beam-to-column joint[J]. Engineering Structures, 2018, 156: 68-81. doi: 10.1016/j.engstruct.2017.11.011 [10] Shi H O, Zhao J X, Chen F M, et al. Mechanical behaviour of precast prestressed reinforced concrete beam–column joints in elevated station platforms subjected to vertical cyclic loading[J]. Reviews on Advanced Materials Science, 2021, 60(1): 818-838. doi: 10.1515/rams-2021-0065 [11] 于建兵, 郭正兴, 郭悬. 新型装配式混凝土框架梁柱节点抗震性能[J]. 工程科学与技术, 2018, 50(3): 209-215.Yu Jianbing, Guo Zhengxing, Guo Xuan. Seismic behavior of a new type prefabricated concrete frame beam-column connections[J]. Advanced Engineering Sciences, 2018, 50(3): 209-215. [12] Rong X, Zhang X W, Zhang J X. Seismic behavior of innovation steel-embedded precast concrete beam-to-column joints[J]. Structures, 2021, 34: 4952-4964. doi: 10.1016/j.istruc.2021.10.082 [13] 戎贤, 杨洪渭, 张健新, 等. 钢节点板连接的装配式混凝土梁柱中节点抗震性能试验研究[J]. 建筑科学, 2020, 36(1): 77-82.Rong Xian, Yang Hongwei, Zhang Jianxin, et al. Experimental study on seismic behavior of fabricated concrete beam-column joints connected by steel plate connector[J]. Building Science, 2020, 36(1): 77-82. [14] Ye M, Jiang J, Chen H M, et al. Seismic behavior of an innovative hybrid beam-column connection for precast concrete structures[J]. Engineering Structures, 2021, 227: 111436. doi: 10.1016/j.engstruct.2020.111436 [15] 黄洋. 新型装配式混凝土梁柱干式节点抗震性能研究[D]. 南京: 南京林业大学, 2022. [16] 高向玲, 徐龙标, 李杰, 等. 预制混凝土梁柱节点试验及框架受力性能分析[J]. 湖南大学学报(自然科学版), 2017, 44(7): 97-103. doi: 10.16339/j.cnki.hdxbzkb.2017.07.012Gao Xiangling, Xu Longbiao, Li Jie, et al. Tests of precast concrete beam-column joints and analysis on mechanical behaviour of prefabricated RC frame structures[J]. Journal of Hunan University (Natural Sciences), 2017, 44(7): 97-103. doi: 10.16339/j.cnki.hdxbzkb.2017.07.012 [17] Xiao J Z, Ding T, Zhang Q T. Structural behavior of a new moment-resisting DfD concrete connection[J]. Engineering Structures, 2017, 132: 1-13. doi: 10.1016/j.engstruct.2016.11.019 [18] 李楠, 张季超, 楚先锋, 等. 预制混凝土结构后浇整体式梁柱节点抗震性能试验研究[J]. 工程力学, 2009, 26(Sup 1): 41-44.Li Nan, Zhang Jichao, Chu Xianfeng, et al. Experimental study on seismic behavior of pre-cast concrete beam-column sub-assemblage with cast-in-situ monolithic joint[J]. Engineering Mechanics, 2009, 26(S 1): 41-44. [19] 杨辉. 局部后张预应力装配式框架节点抗震性能及应用研究[D]. 南京: 东南大学, 2020. [20] 柳炳康, 黄慎江, 宋满荣, 等. 预压装配式预应力混凝土框架抗震性能试验研究[J]. 土木工程学报, 2011, 44(11): 1-8.Liu Bingkang, Huang Shenjiang, Song Manrong, et al. Experimental study of seismic performance of prestressed fabricated PC frames[J]. China Civil Engineering Journal, 2011, 44(11): 1-8. [21] Zhang J X, Pei Z H, Rong X. Experimental seismic study of an innovative precast steel–concrete composite beam–column joint[J]. Soil Dynamics and Earthquake Engineering, 2022, 161: 107420. doi: 10.1016/j.soildyn.2022.107420 [22] Wang Z, Feng D C, Wu G. Experimental study on seismic behavior of precast bolt-connected steel-members end-embedded concrete (PBSEC) beam-column connections[J]. Buildings, 2022, 12(10): 1652. doi: 10.3390/buildings12101652 [23] 杨曌, 吕伟, 包亮. 基于螺栓连接的新型钢筋混凝土框架装配式节点抗震性能研究[J]. 工业建筑, 2019, 49(8): 93-99. doi: 10.13204/j.gyjz201908016Yang Zhao, Lyu Wei, Bao Liang. Experimental research on seismic behavior of new rc frame assembly joints based on bolted connection[J]. Industrial Construction, 2019, 49(8): 93-99. doi: 10.13204/j.gyjz201908016 [24] Ding K W, Ye Y, Ma W. Seismic performance of precast concrete beam-column joint based on the bolt connection[J]. Engineering Structures, 2021, 232: 111884. doi: 10.1016/j.engstruct.2021.111884 [25] Ding K W, Zhang Y. Experimental study on seismic performance of fabricated bolted joint under low-cycle reciprocating loads[J]. Results in Engineering, 2021, 9: 100208. doi: 10.1016/j.rineng.2021.100208 [26] Xue W C, Hu X Y, Dai L J, et al. Cyclic behavior of semi-rigid precast concrete beam-to-column subassemblages with rapid assembly connections[J]. Journal of Building Engineering, 2022, 46: 103671. doi: 10.1016/j.jobe.2021.103671 [27] GB 50011—2001 建筑抗震设计规范(2008年版)[S]. [28] GB 50010—2002 混凝土结构设计规范[S]. [29] GB/T 50152—2012 混凝土结构试验方法标准[S]. [30] GB/T 17671—2021 水泥胶砂强度检验方法(ISO法)[S]. [31] GB 50017—2017 钢结构设计标准(附条文说明[另册])[S]. [32] GB/T 228—2002 金属材料 室温拉伸试验方法[S]. [33] JGJ/T 101—2015 建筑抗震试验规程[S]. [34] JGJ 145—2013 混凝土结构后锚固技术规程[S]. [35] 武江传. 新型预制预应力梁装配整体式框架抗震性能研究[D]. 南京: 东南大学, 2018. [36] Zenunović D, Folić R. Models for behaviour analysis of monolithic wall and precast or monolithic floor slab connections[J]. Engineering Structures, 2012, 40: 466-478. doi: 10.1016/j.engstruct.2012.03.007 [37] 廖凌峰. 新型装配式混凝土节点性能的研究[D]. 南昌: 南昌大学, 2018. [38] 刘记雄. T形钢管混凝土组合柱—钢筋混凝土梁边节点抗震性能研究[D]. 武汉: 武汉理工大学, 2015. [39] JGJ 82—2011 钢结构高强度螺栓连接技术规程[S]. [40] 孙铭. 钢筋混凝土粘结滑移本构试验研究及有限元分析[D]. 杭州: 浙江大学, 2015. [41] British Standards Institution. Structural use of concrete-part 1: code of practice for design and construction: bs 8110-1: 1997[S]. London: BSI, 1997. [42] CEN. EN 1992-4: 2018. Eurocode 2: Design of concrete structures-Part 4: Design of fastenings for use in concrete. -
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