|Table of Contents|

Flexural behavior experiment of full-scale PC box girder strengthened by composite technique(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2018年05期
Page:
56-65
Research Field:
Publishing date:

Info

Title:
Flexural behavior experiment of full-scale PC box girder strengthened by composite technique
Author(s):
WANG Shi-chao1; 2;  WANG Chun-sheng1;  DUAN Lan1;  SHEN Jian-cheng3;  WANG Qian1
(1. Shaanxi Provincial Major Laboratory for Highway Bridge and Tunnel, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Laboratory of Maintenance and Safety of Structures, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Vaud, Switzerland; 3. Ningxia Highway and Bridge Corporation, Yinchuan 750016, Ningxia, China)
Keywords:
bridge engineering;  steel plate-concrete composite strengthening;  full-scale small PC box girder;  ultimate bearing capacity;  plasticity limit analysis method
PACS:
U448.35
DOI:
-
Abstract:
In order to solve the problem of declining structural performance of old concrete girder bridges, a full-scale test was conducted to investigate the flexural behavior of small PC box girders strengthened by the steel plate-concrete composite strengthening(SPCCS)technology. Two full-scale 20 m-span small PC box girders strengthened by the SPCCS technique were tested to research their bending properties, the test result was compared with the full-scale test results of an unstrengthened girder and a prestressed CFRP(carbon fiber reinforce plastic)strengthened girder, the flexural behavior of full-scale SPCCS box girders was analyzed, and the strain distributions of strengthening steel plates, major reinforcements of original girder, concrete and reinforcements at the top flange, and connection sturctures at the mid-span section in the whole loading process were studied. Based on the full-scale test results, the simplified calculation formulas of flexural capacity of SPCCS full-scale small PC box girder was established. Research result shows that the SPCCS girders fail in the plastic flexural mode. Compared with the unstrengthened girder, the measured ultimate flexural capacity of SPCCS full-scale test beam increases by more than 76%, and the stiffness in normal usage stage increases by more than 1 time, therefore, the composite strengthening can obviously improve the flexural capacity of PC box girder. The strain distribution of mid-span section for test girder is in accordance with the plane cross-section assumption. The longitudinal relative slip between the composite strengthened part and the web of concrete box girder is less than 0.6 mm, therefore, the SPCCS girder has good integral working performance. The ratios of the measured and calculated ultimate flexural capacities of 2 full-scale test girders are 1.06 and 1.01, respectively, so the simplified formulas are reliable and can be used to calculate and analyze the bearing capacity of PC box girder strengthened by the composite strengthening. 4 tabs, 15 figs, 27 refs

References:


[1] ENRIGHT M P,FRANGOPOL D M. Maintenance planning for deteriorating concrete bridges[J]. Journal of Structural Engineering, 1999, 125(12): 1407-1414.
[2] 聂建国,赵 洁,唐 亮.钢板-混凝土组合在钢筋混凝土梁加固中的应用[J].桥梁建设,2007(3):76-79. NIE Jian-guo, ZHAO Jie, TANG Liang. Application of steel plate and concrete composite to strengthening of reinforced concrete girder[J]. Bridge Construction, 2007(3): 76-79.(in Chinese)
[3] 聂建国,朱林森,任明星,等.北京某地下人行通道的加固处理[J].建筑结构,2001,31(9):56-57. NIE Jian-guo, ZHU Lin-sen, REN Ming-xing, et al. Reinforcement of a passageway in Beijing[J]. Building Structure, 2001, 31(9): 56-57.(in Chinese)
[4] 聂建国,赵 洁.钢板-混凝土组合加固钢筋混凝土简支梁试验研究[J].建筑结构学报,2008,29(5):50-56. NIE Jian-guo, ZHAO Jie. Experimental study on simply supported RC beams strengthened by steel plate-concrete composite technique[J]. Journal of Building Structures, 2008, 29(5): 50-56.(in Chinese)
[5] JUAN CASILAS G, KHACHATURIAN N, SIESS C P. Studies of reinforced concrete beams and slabs reinforced with steel plates[R]. Urbana: University of Illinois, 1957.
[6] SMITH S T, BRADFORD M A, OEHLERS D J. Elastic buckling of unilaterally constrained rectangular plates in pure shear[J]. Engineering Structures, 1999, 21(5): 443-453.
[7] SMITH S T, BRADFORD M A, OEHLERS D J. Unilateral buckling of elastically restrained rectangular mild steel plates[J]. Computational Mechanics, 2000, 26(4): 317-324.
[8] 聂建国,赵 洁.钢板-混凝土组合抗弯加固中滑移分布分析[J].清华大学学报:自然科学版,2007,47(12):2085-2088, 2094. NIE Jian-guo, ZHAO Jie. Slip distribution analysis of steel plate-concrete composite flexural members[J]. Journal of Tsinghua University:Science and Technology, 2007, 47(12): 2085-2088, 2094.(in Chinese)
[9] 聂建国,陶慕轩,吴丽丽,等.钢-混凝土组合结构桥梁研究新进展[J].土木工程学报,2012,45(6):110-122. NIE Jian-guo, TAO Mu-xuan, WU Li-li, et al. Advances of research on steel-concrete composite bridges[J]. China Civil Engineering Journal, 2012, 45(6): 110-122.(in Chinese)
[10] 聂建国,陶慕轩,黄 远,等.钢-混凝土组合结构体系研究新进展[J].建筑结构学报,2010,31(6):71-80. NIE Jian-guo, TAO Mu-xuan, HUANG Yuan, et al. Research advances of steel-concrete composite structural systems[J]. Journal of Building Structures, 2010, 31(6): 71-80.(in Chinese)
[11] 聂建国,赵 洁.钢板-混凝土组合梁及组合抗弯加固中栓钉的性能及抗剪承载力研究[J].建筑结构,2010,40(6):39-43. NIE Jian-guo, ZHAO Jie. Shear resistance of stud shear connectors in steel plate-concrete composite beams and RC beams flexurally strengthened using steel plate-concrete composite technique[J]. Building Structure, 2010, 40(6): 39-43.(in Chinese)
[12] 王春生,袁卓亚,高 珊,等.钢板-混凝土组合加固矩形梁的抗弯性能试验[J].中国公路学报,2011,24(5):65-73. WANG Chun-sheng, YUAN Zhuo-ya, GAO Shan, et al. Flexural behavior test of rectangular reinforced concrete beams of steel plate-concrete composite strengthening[J]. China Journal of Highway and Transport, 2011, 24(5): 65-73.(in Chinese)
[13] 王春生,袁卓亚,郭晓宇,等.钢板-混凝土组合加固混凝土T梁的抗弯性能试验[J].交通运输工程学报,2010,10(6):32-40. WANG Chun-sheng, YUAN Zhuo-ya, GUO Xiao-yu, et al. Flexural behavior experiment of reinforced concrete T-beams with steel plate-concrete composite strengthening[J]. Journal of Traffic and Transportation Engineering, 2010, 10(6): 32-40.(in Chinese)
[14] 王春生,高 珊,任腾先,等.钢板-混凝土组合加固带损伤钢筋混凝土T梁的抗弯性能试验[J].建筑科学与工程学报,2010,27(3):94-101. WANG Chun-sheng, GAO Shan, REN Teng-xian, et al. Bending behavior experiment of damaged RC T-beams with steel plate and concrete composite strengthening[J]. Journal of Architecture and Civil Engineering, 2010, 27(3): 94-101.(in Chinese)
[15] WANG Qian, LI Rui, LUO Qiao, et al. Study on full-scale bending experiment of concrete girder reinforced by steel plate and concrete composite strengthening method[C]∥IABSE. Structural Engineering—Providing Solutions to Global Challenges. Zurich: IABSE, 2015: 1203-1210.
[16] WANG Chun-sheng, WANG Qian, LIU Hao, et al. Study on shear resistance of full-scale PC box girder reinforced by SPCCS method[C]∥TORERO J L, TENG Jin-guang, FERNANDO D. 2th International Conference on Performance-based and Life-Cycle Structural Engineering. Brisbane: The University of Queensland, 2015: 512-521.
[17] DUAN Lan, WEN Yi-ping, GUO Yun-fei, et al. Shear behaviour experimental study for full-scale PC box girder strengthened by composite strengthening method[C]∥IABSE. Bridges and Structures Sustainability-Seeking Intelligent Solutions. Zurich: IABSE, 2016: 98-105.
[18] 王世超,王春生,王 茜,等.组合加固足尺预应力混凝土空心板梁抗弯性能[J].交通运输工程学报,2018,18(2):31-41. WANG Shi-chao, WANG Chun-sheng, WANG qian, et al. Flexural behaviors of full-scale prestressed concrete hollow slab girders with composite strengthening[J]. Journal of Traffic and Transportation Engineering, 2018, 18(2): 31-41.(in Chinese)
[19] JORGENSON J L, LARSON W. Field testing of a reinforced concrete highway bridge to collapse[J]. Transportation Research Board, 1976, 607: 66-71.
[20] MILLER R A, AKTAN A E, SHAHROOZ B M. Destructive testing of decommissioned concrete slab bridge[J]. Journal of Structural Engineering, 1994, 120(7): 2176-2198.
[21] HARRIES K A. Structural testing of prestressed concrete girders from the lake view drive bridge[J]. Journal of Bridge Engineering, 2009, 14(2): 78-92.
[22] LANTSOGHT E, VAN DER VEEN C, DE BOER A, et al. Collapse test and moment capacity of the Ruytenschildt reinforced concrete slab bridge[J]. Structure and Infrastructure Engineering, 2017, 13(9): 1130-1145.
[23] ZHANG Jian-ren, PENG Hui, CAI Chun-sheng. Field study of overload behavior of an existing reinforced concrete bridge under simulated vehicle loads[J]. Journal of Bridge Engineering, 2011, 16(2): 226-237.
[24] 张建仁,彭 晖,张克波,等.锈蚀钢筋混凝土旧桥超限及极限荷载作用的现场破坏性试验研究[J].工程力学,2009,26(增Ⅱ):213-224. ZHANG Jian-ren, PENG Hui, ZHANG Ke-bo, et al. Test study on overload and ultimate behavior of old reinforced concrete bridge through destructive test of corroded bridge[J]. Engineering Mechanics, 2009, 26(SⅡ): 213-224.(in Chinese)
[25] ZHANG Jian-ren, PENG Hui, CAI Chun-sheng. Destructive testing of a decommissioned reinforced concrete bridge[J]. Journal of Bridge Engineering, 2013, 18(6): 564-569.
[26] 刘金福.服役 20 年预应力混凝土连续梁桥静载试验研究[J].桥梁建设,2013,43(5):75-80. LIU Jin-fu. Study of static load tests for a prestressed concrete continuous girder bridge in service of 20 years[J]. Bridge Construction, 2013, 43(5): 75-80.(in Chinese)
[27] CZADERSKI C, MOTAVALLI M. 40-year-old full-scale concrete bridge girder strengthened with prestressed CFRP plates anchored using gradient method[J]. Composites Part B: Engineering, 2007, 38(7/8): 878-886.

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Last Update: 2018-05-30