Please wait a minute...
浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)  2018, Vol. 52 Issue (5): 853-863    DOI: 10.3785/j.issn.1008-973X.2018.05.005
Civil and Traffic Engineering     
Post-fire shear performance of bolted side-plated reinforced concrete beams
LIU Xin, LU Zhou-dao, CAI Zi-wei, LI Ling-zhi
College of Civil Engineering, Tongji University, Shanghai 200092, China
Download:   PDF(6269KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

Four-point bending shear test was conducted for an unreinforced control beam, two BSP beams under room temperature and two post-fire BSP beams in order to study the post-fire shear performance of the reinforced concrete beams strengthened by bolted side-plating (BSP) technique. The failure modes, the load-displacement curves, and the strains of reinforcement and steel plates wereobserved.The variation of the shear capacity, stiffness and ductility as the depth of steel plates, types of anchor adhesive,and the temperature was analysed. Results show that the high temperature can decrease RC beams in shear capacity, ductilityand stiffness.Increasing plate depth can improve the shear capacity and the ductility of post-fire BSP specimens, and transform the failure modes from brittle shear-compression failure into ductile flexural failure.The magnesium oxychloride cement was more effective in the improvement of shear capacity and ductility at the expense of lower stiffness compared to the anchor adhesive of the HIT-RE 500.

Received: 12 June 2017      Published: 07 November 2018
CLC:  TU375  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:

LIU Xin, LU Zhou-dao, CAI Zi-wei, LI Ling-zhi. Post-fire shear performance of bolted side-plated reinforced concrete beams. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(5): 853-863.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2018.05.005     OR     http://www.zjujournals.com/eng/Y2018/V52/I5/853


梁侧锚钢加固钢筋混凝土梁火灾后受剪性能

为了研究梁侧锚钢加固钢筋混凝土梁（BSP梁）受火后的受剪性能，对1根未加固的对比梁、2根BSP常温梁和2根BSP高温梁进行四点弯曲受剪试验.考察各试件的破坏模式、荷载-挠度曲线、钢筋和钢板应变等情况，分析钢板宽度、植筋胶类型和是否受火对BSP试件受剪承载力、刚度、延性的影响.结果表明：受火后BSP梁的受剪承载力、延性和刚度明显降低；增大钢板宽度可以有效提高火灾后BSP梁的受剪承载力和延性，使试件由脆性的剪压破坏向延性的弯曲破坏转变；氯氧镁水泥作为植筋胶在提高常温试件受剪承载力和延性方面比HIT-RE 500更有效，但在提高刚度方面效果略低.

[1] SU R K L, ZHU Y. Experimental and numerical studies of external steel plate strengthened reinforced concrete coupling beams[J]. Engineering Structures, 2005, 27(10):1537-1550.
[2] OEHLERS D J, NGUYEN N T, AHMED M, et al. Transverse and longitudinal partial interaction in composite bolted side-plated reinforced-concrete beams[J]. Structural Engineering and Mechanics, 1997, 5(5):553-563.
[3] NGUYEN N T, OEHLERS D J, BRADFORD M A. An analytical model for reinforced concrete beams with bolted side plates accounting for longitudinal and transverse partial interaction[J]. International Journal of Solids and Structures, 2001, 38(38/39):6985-6996.
[4] BARNES R A, BAGLIN P S, MAYS G C, et al. External steel plate systems for the shear strengthening of reinforced concrete beams[J]. Engineering Structures, 2001, 23(9):1162-1176.
[5] LI L Z, LO S H, SU R K L. Experimental study of moderately reinforced concrete beams strengthened with bolted-side steel plates[J]. Advances in Structural Engineering, 2013, 16(3):499-516.
[6] 高剑平,吴章勇,任乐,等.梁侧锚贴钢板加固钢筋混凝土梁抗弯性能试验研究[J].工程抗震与加固改造,2012(2):13-16. GAO Jian-ping, WU Zhang-yong, REN Le, et al. Experimental study on bending behavior of reinforced concrete beam strengthened with bolted side steel plate[J]. Earthquake Resistant Engineering and Retrofitting, 2012(2):13-16.
[7] 桑大勇,王仁义,刘立新.锚贴钢板加固钢筋混凝土梁受剪性能的试验研究[J].建筑结构,2007,37(增1):294-297. SANG Da-yong, WANG Ren-yi, LIU Li-xin. Experimental study on shear properties of rc beams strengthened with by steel plate anchored by rivets[J]. Building Structure, 2007,37(Supple.1):294-297.
[8] 韩重庆,徐智敏,许清风,等.钢板加固受火后高强钢筋混凝土连续T形梁力学性能试验研究[J].建筑结构学报,2016,37(3):10-19. HAN Zhong-qing, XU Zhi-min, XU Qing-feng, et al. Experimental research on mechanical behavior of fire-damaged RC continuous T-beams with high-strength rebar strengthened with steel plate[J]. Journal of Building Structures, 2016,37(3):10-19.
[9] 姜常玖,陆洲导,李凌志,等.梁侧锚固钢板加固高温后混凝土梁受剪性能试验研究[J].建筑结构学报,2017,38(3):67-75. JIANG Chang-jiu, LU Zhou-dao, LI Ling-zhi, et al. Experimental study on shear performance of bolted-side plated strengthening fire-damaged reinforced concrete beams[J]. Journal of Building Structures, 2017,38(3):67-75.
[10] 徐玉野,吴波,王荣辉,等.高温后钢筋混凝土梁剩余承载性能试验研究[J].建筑结构学报,2013,34(8):20-29. XU Yu-ye, WU Bo, WANG Rong-hui, et al. Experimental study on residual performance of reinforced concrete beams after fire[J]. Journal of Building Structures, 2013, 34(8):20-29.
[11] 徐玉野,杨清文,吴波,等.高温后钢筋混凝土短柱抗震性能试验研究[J].建筑结构学报,2013,34(8):12-19. XU Yu-ye, YANG Qing-wen, WU Bo, et al. Experimental study on seismic performance of reinforced concrete short columns after fire[J]. Journal of Building Structures, 2013, 34(8):12-19.
[12] 徐玉野,胡翠平,王荣辉,等.火灾后混凝土短肢剪力墙抗震性能的试验研究[J].土木工程学报,2014,47(1):59-69. XU Yu-ye, HU Cui-ping, WANG Rong-hui, et al. Experimental study on seismic performance of concrete short-limb shear walls after fire[J]. China Civil Engineering Journal, 2014, 47(1):59-69.
[13] 丁发兴,余志武,温海林.高温后Q235钢材力学性能试验研究[J].建筑材料学报,2006(2):245-249. DING Fa-xing, YU Zhi-wu, WEN Hai-lin. Experimental research on mechanical properties of Q235 steel after high temperature treatment[J]. Journal of Building Materials, 2006(2):245-249.
[14] 屈立军,李焕群,王跃琴,等.国产钢结构用Q345(16Mn)钢高温力学性能的恒温加载试验研究[J].土木工程学报,2008,41(7):33-40. QU Li-jun, LI Huan-qun, WANG Yue-qin, et al. Material properties of Q345(16Mn) steel under loading and constant temperature[J]. China Civil Engineering Journal, 2008,41(7):33-40.
[15] 陈华.高强度螺栓连接在高温环境下受力性能的试验研究[D].武汉理工大学, 2003. CHEN Hua. Experimental study of the behavior of the high-strength bolted connections in high-temperature[D]. Wuhan University of Technology, 2003.
[16] 韩春雷,陈忠范.高铝水泥改性氯氧镁胶凝材料高温下的力学性能试验研究[J].混凝土,2009(2):90-93. HAN Chun-lei, CHEN Zhong-fan. Experimental study on mechanical properties of aluminum modified magnesium oxychloride cementitious material under high temperature[J]. Concretem, 2009(2):90-93.
[17] 袁广林,刘涛,闫玉红.高温后RC植筋边节点反复荷载的试验研究[J].中国矿业大学学报,2008,37(1):19-23. YUAN Guang-lin, LIU Tao, YAN Yu-hong. Experimental study of behaviors of rc structure's exterior joints with post-embedded bars under cyclic loading after treatment at high temperature[J]. Journal of China University of Mining and Technology, 2008, 37(1):19-23.
[18] 王欣,姜常玖,惠守江,等.无机胶植筋式后锚固连接的抗火性能研究[J].四川大学学报:自然科学版.2013,45(4):27-33. WANG Xin, JIANG Chang-jiu, HUI Shou-jiang, et al. Fire Resistance behavior of the inorganically post-installed rebar connection[J]. Journal of Sichuan University:Natural Science Edition, 2013, 45(4):27-33.
[1] WANG Hai-long, LING Jia-yan, SUN Xiao-yan, LI Xiao-bin. Performance of stainless steel reinforced concrete column under small eccentric compression[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(10): 1919-1925.
[2] CAI Zi-wei, LU Zhou-dao, LI Ling-zhi, SU Lei, LIN Chuang. Experimental study on shear performance of bolted side-plated reinforced concrete beams[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(1): 82-88.
[3] DAI Li-zhao, WANG Lei, ZHANG Jian-ren, YANG Ri-hua. Filling of strand corrosion products and crack width prediction[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(1): 97-105.
[4] FAN Sheng-gang, ZHANG Sui-han, MENG Chang. Experimental investigation on mechanical properties of austenitic stainless steel with elevated temperature cooling[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(12): 2348-2354.
[5] ZHANG Jun, JIN Wei-liang, MAO Jiang-hong. Experimental study on steel bars' fatigue damage based on piezomagnetism[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(9): 1681-1687.
[6] JIANG Xiang, TONG Gen-shu, ZHANG Lei. Fire resistance and bending bearing capacity of fire-resistant steel-concrete composite beams[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(8): 1482-1493.
[7] YU Yang-tian, ZHANG Qing, GU Xin. Hybrid model of peridynamics and finite element method under implicit schemes[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(7): 1324-1330.
[8] JIN Li-Bing, JIN Wei-Liang, WANG Hai-Long, JIA Jin. Multienvironmental time similarity theory and its application[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2010, 44(4): 789-797.