Experimental Study on Interfacial Shear Properties of Concrete Reinforced Stone Arch Bridges
American Journal of Civil Engineering
Volume 6, Issue 4, July 2018, Pages: 134-140
Received: Nov. 7, 2018;
Published: Nov. 8, 2018
Views 344 Downloads 105
Zhang Miao, School of Civil Engineering, Southwest Jiaotong University, Chengdu, China
Zhang Fang, School of Civil Engineering, Southwest Jiaotong University, Chengdu, China
Follow on us
To investigate the shear performance of the interface between concrete and stone, the interfacial shear test of concrete - stone carried out by using the Z-type and hoop-type specimens. The effects of different bonding methods, material strength and different forms of embedded steel bars on interfacial shear properties are considered.. The experimental results show that the bonding interface between concrete and stone is the weak point of the sample, and the damage occurs on the interface. The fracture pattern of Z-type specimen is vertical crack and diagonal crack near the interface. The crack forms of the hoop type specimens are the diagonal cracks distributed on the top of concrete, vertical and oblique cracks on the sides. Within a certain range, the strength g of the concrete will increase the shear strength of the interface and delay the cracking of the specimen. When the strength grades of concrete were C35, C40 and C45, the shear strength of the Z-type specimen increased by 14.7% and 10.8% respectively, and the shear strength of the hoop-type specimen increased by 15.2% and 11.1% respectively. Interfacial implantable steel bar can improve the shear resistance of interface significantly, and the greater the rate of steel bar, the greater the shear strength. When the planting rates were 0%, 0.196%, 0.392% and 0.785% respectively, the improvement rates of shear strength of Z-type specimens were 40.2%, 65.5% and 45.2% respectively, and the improvement rates of shear strength of hoop specimens were 64.1%, 54.5% and 60.5% respectively. The shear strength of the hoop type specimen is greater than that of the Z-type specimen, the non-planted bar specimen is increased by about 20%, and the planted steel bar specimen is increased by about 40% to 55%.
Concrete, Stone, Interface, Planting Steel Bar, Shear Strength
To cite this article
Experimental Study on Interfacial Shear Properties of Concrete Reinforced Stone Arch Bridges, American Journal of Civil Engineering.
Vol. 6, No. 4,
2018, pp. 134-140.
LI Jiantong. Causes Analysis of Hazards And Control Strategies Of The Spandrel-filled Stone Arch Bridge in Mountain Areas. Chongqing Jiaotong University, 2017.
JIA Yue. Analysis and reinforcement of stone arch bridge. Henan: Zhengzhou University, 2013:2.
Qiao Wenjing. Study on Model Test and Engineering Application of Masonry Arch-bridge Reinforced with Composite Arch Circle. Chang' an University, 2014.
GAO Jian-ping, PAN Jing-long, WANG Yu-guang. Effect of different bonding agentsonbond strengthbetween fresh concrete and hardened concrete. Journal of Harbin University of C. E.&Architecture, 2001, 34 (5):25-29.
Mao Dejun, Qian Yongjiu. Calculation methods of shear strength on new-to-old concrete interface. [J]. Building Structure, 2016, 46 (15), 65-68.
HUANG Lu, ZHUO Weidong, GU Yin. Effect test of interface agent on bonding of old and new concrete. Journal of Fuzhou University (Natural Soienc; e Edition), 2018, 46 (3), 396-402.
WANG Zhen1ing. Study on Bond Theory and Test of New and Old Concrete and its Application in Bridge Strengthening Engineering [D]. Southwest Jiaotong University, 2006::9-10.
Hu T M, Ding K X, Zhang G H, et al. Research on shear behavior of bonding interface of existing concrete structure strengthened by steel fiber reinforced self-Stressing concrete Building Structure, 2018, 48 (18), 83-87.
SUN Chao, LIU Ming, CHEN Bao-chun. Research on ultimate load-carrying capacity of composite arch ring of stone arch bridge reinforced by concrete arch-lifted method [J]. 2012, 40 (3):376-382.
ZHANG Jing, QIAN Yong-jiu. Theoretical Analysis of Normal Section Bearing Capacity of Stone MainArch Ring Strengthened by Reinforced Concrete [J]. Journal of Highway and Transportation Research and Development, 2008, 25 (6):76-80.
LIU Qing-yang, ZHOU Jian-ting, WANG Ling, ZHU Xiao-long. Minimum Thickness of Reinforcing Layer of Stone Arch Bridge Strengthened by Section Enlargement Method [J]. Journal of Chongqing Jiaotong University (Natural Science) 2008, 27 (1):20-23.
Yan Yonglun, Sun Junhai. Research on Mechanical Calculation Model of Rib-type Variable Section Clamp Reinforced Arch Bridge [J], Highway, 2008 (5) 101-103.
ZHANG Miao, ZHANG Jing. Experimental StudyMasonry by Plantingon Shearing Property of Interfacial Bonding of Concrete and StoneReinforced Bar [J],. Building Science, 2015, 31 (1):43-47.
BIRKELAND P W, BIRKELAND H W. Connections in precast concrete construction [J]. Journal of the American Concrete institute, 1966, 63 (3), 345.