Lateral impact behavior of high-performance concrete-filled steel tubular composite structural members
Article Text (Baidu Translation)
-
摘要: 设计制作了4根方形高性能钢管混凝土叠合构件，考虑了C80高强混凝土与超高性能混凝土(UHPC)等不同混凝土类别的影响；采用落锤试验机开展侧向冲击试验，探究了冲击力、变形和能量吸收等关键性能指标；建立与校准有限元模型，并对构件配筋情况、钢管厚度、钢管强度以及轴压比进行了参数分析。研究结果表明：内外混凝土均为UHPC的叠合构件能够应对更大能量的侧向冲击；外包UHPC的叠合构件抗冲击性能明显优于外包C80高强混凝土的叠合构件，其冲击力平台值提高了约10%，而跨中峰值位移与残余变形分别降低了11.2%和21.6%；建立的有限元模型计算获得的冲击力、变形等性能指标与试验基本一致，证明了所建立模型的可靠性；参数分析表明，钢管厚度及强度的增大能显著提高构件的冲击力平台值，降低跨中峰值位移，从而提高构件的抗冲击性能；相对于素混凝土，外包混凝土中钢筋的配置能有效提高构件的抗冲击性能，但在满足最小配筋率后，钢筋数量和直径的进一步增大对构件抗冲击性能的提高影响有限；轴压比在0.1以内对构件的影响较小，但轴压比的进一步增大会显著削弱构件的抗冲击性能，直至发生失稳破坏。所得成果揭示了高性能钢管混凝土叠合构件优异的抗冲击性能，进一步提升了此类构件在大跨高墩桥梁中的应用潜力。Abstract: Four square high-performance concrete-filled steel tubular (HPCFST) composite structural members were designed and fabricated, considering the influence of different concrete types, including C80 high-strength concrete and ultra-high-performance concrete (UHPC). Lateral impact tests were conducted using a drop-weight testing machine to evaluate critical performance indicators such as impact force, deformation, and energy absorption. A finite element (FE) model was developed, calibrated, and utilized for parametric analyses focusing on reinforcement configuration, thickness of steel tube, strength of steel tube, and axial compression ratio. Analysis results show that the composite structural members with both internal and external concrete being UHPC can withstand lateral impacts of greater energy. The impact resistance of UHPC reinforced composite structural members is significantly superior to those reinforced with C80 high-strength concrete, whose plateau value of impact force shows an approximately 10% improvement, while peak mid-span displacement and residual deformation are reduced by 11.2% and 21.6%, respectively. The established FE model achieves good agreement with experimental results in terms of impact force and deformation, which validates its reliability. Parametric analysis reveals that increasing thickness and strength of steel tube significantly increases the plateau value of impact force and reduces peak mid-span displacement, thereby improving impact resistance of the member. The inclusion of steel rebars in encased concrete can effectively enhance the impact resistance of members compared to plain concrete. However, once the minimum reinforcement ratio is satisfied, further increases in the quantity and diameter of rebars have limited effects on improving impact resistance of members. The influence of the axial compression ratio within 0.1 on the member is limited, but the further increase of the axial compression ratio will significantly weaken the impact resistance of the member, until the instability failure occurs. These findings illustrate the excellent impact resistance of HPCFST composite structural members and further enhance the application potential of such members in long-span tall-pier bridges.
-
图 6 冲击力与跨中位移的典型时程曲线
Figure 6. Typical time-history curves of impact force and mid-span displacement
图 7 试件UHPC-UHPC的冲击力-跨中位移曲线
Figure 7. Impact force-mid-span displacement curves of specimen UHPC-UHPC
图 11 有限元模拟结果与试验的冲击力时程曲线对比
Figure 11. Comparison of impact force time-history curves between the FE simulation and tests
图 12 有限元模拟结果与试验的跨中位移时程曲线对比
Figure 12. Comparison of mid-span displacement time-history curves between the FE simulation and tests
表 1 试件基本参数
Table 1. Basic parameters of specimens
试件名称 L0/mm B/mm ts/mm fy/MPa 核心混凝土fcu/MPa 外包混凝土fcu/MPa ρ/% m/kg h/m 冲击位置 Ei/kJ C80-UHPC 1 600 240 5 758 84.0 155.9 0.35 547 3 跨中 15 UHPC-C80 155.9 84.0 C80-C80 84.0 84.0 UHPC-UHPC 155.9 155.9 
下载: 导出CSV
表 2 钢材基本力学性能
Table 2. Basic mechanical properties of steel
钢材 牌号 厚度或直径/mm Es /GPa fy/MPa fu/MPa δ/% 方钢管 Q690 5 208 758 802 20 箍筋 HRB400 6 200 400 566 21 纵筋 HRB400 8 200 400 573 25
下载: 导出CSV
表 3 C80高强混凝土配合比
Table 3. Mix proportions of C80 high-strength concrete
水泥/(kg·m-3) 硅灰/(kg·m-3) 粗骨料/(kg·m-3) 细骨料/(kg·m-3) 减水剂/(kg·m-3) 水/(kg·m-3) 水胶比 579 102 1 050 617 16 172 0.25
下载: 导出CSV
表 4 UHPC配合比
Table 4. Mix proportions of UHPC
水泥/(kg·m-3) 硅灰/(kg·m-3) 石英砂/(kg·m-3) 石英粉/(kg·m-3) 减水剂/(kg·m-3) 水/(kg·m-3) 钢纤维/(kg·m-3) 水胶比 40~70目 20~40目 10~20目 400目 859.5 258.0 120.5 352.0 452.5 80.5 21.5 201.0 160.0 0.18
下载: 导出CSV
表 5 混凝土的基本力学性能
Table 5. Basic mechanical properties of concrete
混凝土类型 龄期 fcu/MPa fc′/MPa Ec/GPa C80 试验当天 86.0 39.2 UHPC 试验当天 155.9 145 45.0
下载: 导出CSV
表 6 试验结果
Table 6. Summary of test results
试件名称 Fm/kN Fp/kN um/mm ur/mm Ei/kJ Eg/kJ Eg/Ei Eg/ur/(kJ·mm-1) C80-C80 1 719 313 32.1 17.6 15 9.7 0.65 0.55 UHPC-C80 1 906 334 29.8 15.3 15 8.8 0.59 0.58 C80-UHPC 2 073 343 28.5 13.8 15 7.9 0.53 0.57 UHPC-UHPC 2 096 372 28.3 13.5 15 9.4 0.63 0.70
下载: 导出CSV
-
[1] 朱翔, 陆新征, 杜永峰, 等. 列车脱轨后运行姿态模拟[J]. 振动与冲击, 2014, 33(23): 145-149.ZHU Xiang, LU Xin-zheng, DU Yong-feng, et al. Simulation for running attitude of a train after derailment[J]. Journal of Vibration and Shock, 2014, 33(23): 145-149. [2] 陆新征, 江见鲸. 世界贸易中心飞机撞击后倒塌过程的仿真分析[J]. 土木工程学报, 2001, 34(6): 8-10.LU Xin-zheng, JIANG Jian-jing. Dynamic finite element simulation for the collapse of world trade center[J]. China Civil Engineering Journal, 2001, 34(6): 8-10. [3] XU L J, LU X Z, SMITH S T, et al. Scaled model test for collision between over-height truck and bridge superstructure[J]. International Journal of Impact Engineering, 2012, 49: 31-42. doi: 10.1016/j.ijimpeng.2012.05.003 [4] SHARMA H, HURLEBAUS S, GARDONI P. Performance-based response evaluation of reinforced concrete columns subject to vehicle impact[J]. International Journal of Impact Engineering, 2012, 43: 52-62. doi: 10.1016/j.ijimpeng.2011.11.007 [5] TAN J S, ELBAZ K, WANG Z F, et al. Lessons learnt from bridge collapse: A view of sustainable management[J]. Sustainability, 2020, 12(3): 1205. doi: 10.3390/su12031205 [6] LIAO F Y, HAN L H, TAO Z. Behaviour of composite joints with concrete encased CFST columns under cyclic loading: Experiments[J]. Engineering Structures, 2014, 59: 745-764. doi: 10.1016/j.engstruct.2013.11.030 [7] HAN L H, AN Y F. Performance of concrete-encased CFST stub columns under axial compression[J]. Journal of Constructional Steel Research, 2014, 93: 62-76. doi: 10.1016/j.jcsr.2013.10.019 [8] HU C M, HAN L H, HOU C C. Concrete-encased CFST members with circular sections under laterally low velocity impact: Analytical behaviour[J]. Journal of Constructional Steel Research, 2018, 146: 135-154. doi: 10.1016/j.jcsr.2018.03.017 [9] HOU C C, HAN L H, WANG F C, et al. Study on the impact behaviour of concrete-encased CFST box members[J]. Engineering Structures, 2019, 198: 109536. doi: 10.1016/j.engstruct.2019.109536 [10] HOU C C, HAN L H, LIANG Z S, et al. Performance of concrete-encased CFST subjected to low-velocity impact: Shear resistance analysis[J]. International Journal of Impact Engineering, 2021, 150: 103798. doi: 10.1016/j.ijimpeng.2020.103798 [11] 丁纪楠, 王庆贺, 任庆新. 圆中空夹层钢管混凝土叠合短柱轴压受力性能研究[J]. 建筑结构学报, 2024, 45(2): 123-135.DING Ji-nan, WANG Qing-he, REN Qing-xin. Mechanical performance of circular concrete-encased CFDST stub columns under axial compression[J]. Journal of Building Structures, 2024, 45(2): 123-135. [12] HAN L H, WANG Z B, XU W, et al. Behavior of concrete-encased CFST members under axial tension[J]. Journal of Structural Engineering, 2016, 142 (2): 04015149. doi: 10.1061/(ASCE)ST.1943-541X.0001422 [13] 李明伦, 任庆新, 王庆贺, 等. 方中空夹层钢管混凝土叠合构件受弯性能试验研究与有限元分析[J]. 建筑钢结构进展, 2025, 27(6): 23-34.LI Ming-lun, REN Qing-xin, WANG Qing-he, et al. Experimental study and finite element analysis on flexural performance of square concrete-encased concrete-filled double-skin steel tubular members[J]. Progress in Steel Building Structures, 2025, 27(6): 23-34. [14] WANG K, ZHU Z Y, YANG Y, et al. Study on shear capacity of prestressed composite joints with concrete-encased CFST columns[J]. Advances in Structural Engineering, 2021, 24 (11): 2457-2471. doi: 10.1177/13694332211000558 [15] WU Q X, SHE Z M, YUAN H H. Experimental study of UHPC-encased CFST stub columns under axial compression[J]. Structures, 2021, 32: 433-447. doi: 10.1016/j.istruc.2021.03.053 [16] CHEN H Y, LIAO F Y, YANG Y X, et al. Behavior of ultra-high-performance concrete (UHPC) encased concrete-filled steel tubular (CFST) stub columns under axial compression[J]. Journal of Constructional Steel Research, 2023, 202: 107795. doi: 10.1016/j.jcsr.2023.107795 [17] GAO X L, SHEN S Y, CHEN G X, et al. Experimental and numerical study on axial compressive behaviors of reinforced UHPC-CFST composite columns[J]. Engineering Structures, 2023, 278: 115315. doi: 10.1016/j.engstruct.2022.115315 [18] WU Q X, XU Z K, YUAN H H, et al. Ultimate bearing capacity of UHPC-encased CFST medium-long columns under axial compression[J]. Magazine of Concrete Research, 2023, 75(10): 487-505. doi: 10.1680/jmacr.22.00050 [19] 杨昱幸, 廖飞宇, 王静峰, 等. 超高性能混凝土(UHPC)包覆钢管混凝土叠合构件抗弯性能试验研究[J]. 工业建筑, 2024, 54(11): 112-120.YANG Yu-xing, LIAO Fei-yu, WANG Jing-feng, et al. Experimental research on flexural performance of UHPC encased CFSTs under pure bending[J]. Industrial Construction, 2024, 54(11): 112-120. [20] 杨昱幸, 廖飞宇, 陈宇峰, 等. 超高性能混凝土(UHPC)包覆钢管混凝土叠合柱偏压性能试验研究[J]. 工业建筑, 2024, 54(11): 121-128.YANG Yu-xing, LIAO Fei-yu, CHEN Yu-feng, et al. Research on mechanical properties of UHPC encased CFSTs under eccentrically compressive loading[J]. Industrial Construction, 2024, 54(11): 121-128. [21] AYOUGH P, WANG Y H, ZENG W Y, et al. Numerical investigation and design of UHPC-encased CFST stub columns under axial compression[J]. Engineering Structures, 2024, 302: 117387. doi: 10.1016/j.engstruct.2023.117387 [22] 韦建刚, 应浩东, 杨艳. UHPC缀板-钢管混凝土复合柱地震响应及数值模拟[J]. 交通运输工程学报, 2025, 25(3): 82-100.WEI Jian-gang, YING Hao-dong, YANG Yan. Seismic response and numerical simulation of concrete-filled steel tubular composite column with UHPC plates[J]. Journal of Traffic and Transportation Engineering, 2025, 25(3): 82-100. [23] 孔文渊, 邢智权, 陈力波, 等. 外包UHPC加固长期荷载作用下CFST墩柱轴压力学性能[J/OL]. 交通运输工程学报, 2025, https://link.cnki.net/urlid/61.1369.u.20250910.1716.003 .KONG Wen-yuan, XING Zhi-quan, CHEN Li-bo, et al. Axial compression performance of CFST pier column under long-term load reinforced by encased UHPC[J/OL]. Journal of Traffic and Transportation Engineering, 2025,https://link.cnki.net/urlid/61.1369.u.20250910.1716.003 .[24] 胡昌明, 韩林海. 圆形钢管混凝土叠合构件抗冲击性能试验研究[J]. 土木工程学报, 2016, 49(10): 11-17.HU Chang-ming, HAN Lin-hai. Experimental behavior of circular concrete-encased concrete-filled steel tubes under lateral impact[J]. China Civil Engineering Journal, 2016, 49(10): 11-17. [25] HUANG Y E, YOUNG B. The art of coupon tests[J]. Journal of Constructional Steel Research, 2014, 96: 159-175. doi: 10.1016/j.jcsr.2014.01.010 [26] 杨晓强. 结构钢动态本构模型与方形高强CFST构件抗侧向冲击性能[D]. 哈尔滨: 哈尔滨工业大学, 2020.YANG Xiao-qiang. Dynamic constitutive model of structural steel and lateral impact resistance of square high-strength CFST members[D]. Harbin: Harbin Institute of Technology, 2020. [27] WANG Y, QIAN X D, LIEW J Y R, et al. Experimental behavior of cement filled pipe-in-pipe composite structures under transverse impact[J]. International Journal of Impact Engineering, 2014, 72: 1-16. doi: 10.1016/j.ijimpeng.2014.05.004 [28] MURRAY Y D. Users manual for LS-DYNA concrete material model 159[R]. Washington DC: Federal Highway Administration, 2007. [29] JIA P C, WU H, WANG R, et al. Dynamic responses of reinforced ultra-high performance concrete members under low-velocity lateral impact[J]. International Journal of Impact Engineering, 2021, 150: 103818. doi: 10.1016/j.ijimpeng.2021.103818 [30] GUO W, FAN W, SHAO X D, et al. Constitutive model of ultra-high-performance fiber-reinforced concrete for low-velocity impact simulations[J]. Composite Structures, 2018, 185: 307-326. doi: 10.1016/j.compstruct.2017.11.022 [31] LI C J, AOUDE H. Effect of UHPC jacketing on the shear and flexural behaviour of high-strength concrete beams[J]. Structures, 2023, 51: 1972-1996. doi: 10.1016/j.istruc.2023.03.104 [32] FAN W, XU X, ZHANG Z Y, et al. Performance and sensitivity analysis of UHPFRC-strengthened bridge columns subjected to vehicle collisions[J]. Engineering Structures, 2018, 173: 251-268. doi: 10.1016/j.engstruct.2018.06.113 [33] FAN W, SHEN D J, YANG T, et al. Experimental and numerical study on low-velocity lateral impact behaviors of RC, UHPFRC and UHPFRC-strengthened columns[J]. Engineering Structures, 2019, 191: 509-525. doi: 10.1016/j.engstruct.2019.04.086 [34] RUSSELL H G, GRAYBEAL B A. Ultra-high performance concrete: A state-of-the-art report for the bridge community[R]. Washington DC: Federal Highway Administration, 2013. [35] GRAYBEAL B A. Material property characterization of ultra-high performance concrete[R]. Washington DC: Federal Highway Administration, 2006. [36] YUN X, GARDNER L. Stress-strain curves for hot-rolled steels[J]. Journal of Constructional Steel Research, 2017, 133: 36-46. doi: 10.1016/j.jcsr.2017.01.024 [37] ABRAMOWICZ W, JONES N. Dynamic axial crushing of square tubes[J]. International Journal of Impact Engineering, 1984, 2(2): 179-208. doi: 10.1016/0734-743X(84)90005-8 [38] YANG X Q, YANG H, GARDNER L, et al. A continuous dynamic constitutive model for normal-and high-strength structural steels[J]. Journal of Constructional Steel Research, 2022, 192: 107254. doi: 10.1016/j.jcsr.2022.107254 -
图(17) / 表(6)
计量
- 文章访问数: 52
- HTML全文浏览量: 22
- PDF下载量: 10
- 被引次数: 0
