Performance of stainless steel reinforced concrete column under small eccentric compression
WANG Hai-long1, LING Jia-yan1, SUN Xiao-yan1, LI Xiao-bin2
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. Central Research Institute of Building and Construction Limited Company, MCC Group, Beijing 100088, China
A new stainless steel was adopted as an alternative of traditional carbon steel in order to solve the corrosion issue of steel rebar in concrete structures subjected to chloride environment. Experiments were conducted to analyze the performances of stainless steel reinforced concrete columns under small eccentric compression. The failure mode, the deformation and the crack development of the column were analyzed. The constitutive models of the stainless steel were compared with the test results and were utilized to calculate the ultimate loading capacity of stainless steel reinforced column. Results showed that the strain distribution in the cross section accorded with the plane hypothesis. The deformations of columns can be divided into three stages:elasticity stage, cracking stage and failure stage. The failure mode of stainless steel reinforced component is the same as that of the carbon steel component under eccentric compression, but the deformation of stainless steel reinforced column is much larger than the column reinforced with carbon steel bars, which indicates that the stainless steel reinforced member has a better ductility. The results of using the double slash model for capacity analysis accorded well with the experimental results. The model has a certain safety stock. Increasing the concrete strength will enhance the ultimate load capacity, and the capacity enhancement is obvious when the cube crushing strength of concrete is around 70 MPa.
Received: 04 September 2017
Published: 11 October 2018
WANG Hai-long, LING Jia-yan, SUN Xiao-yan, LI Xiao-bin. Performance of stainless steel reinforced concrete column under small eccentric compression. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(10): 1919-1925.
[1] GEDGE G. Rationale for using stainless steel reinforcement in the UK construction industry[EB/OL]. 2003-05-12[2017-08-26]. http://www.worldstainless.org/Files/issf/non-image-files/PDF/ss_rebar5.pdf.
[2] 张国学, 吴苗苗. 不锈钢钢筋混凝土的应用及发展[J]. 佛山科学技术学院学报:自然科学版, 2006, 24(2):10-13 ZHANG Guo-xue, WU Miao-miao. Application and development of stainless steel rebars for reinforced concrete structures[J]. Journal of Foshan University:Natural Science Edition, 2006, 24(2):10-13
[3] GEDGE G. Structural uses of stainless steel-buildings and civil engineering[J]. Journal of Constructional Steel Research, 2008, 64(11):1194-1198.
[4] 赵峰. 不锈钢钢筋混凝土梁抗震性能试验研究[D]. 广州:广东工业大学, 2009. ZHAO Feng. Study on the seismic performance of the concrete beam reinforced with stainless steel bar[D]. Guangzhou:Guangdong University of Technology, 2009.
[5] BADDOO N R. Stainless steel in construction:a review of research, applications, challenges and opportunities[J]. Journal of Constructional Steel Research, 2008, 64(11):1199-1206.
[6] BADDOO N, BURGAN B. Structural design of stainless steel[M]. Berkshire:SCI, 2007:6.
[7] 张国学, 徐永生, 丁舟. 不锈钢钢筋混凝土梁受弯性能的试验研究[J]. 铁道建筑, 2008(2):13-15 ZHANG Guo-xue, XU Yong-sheng, DING Zhou. Experimental study on the flexural performance of steel reinforced concrete[J]. Railway Engineering, 2008(2):13-15
[8] 李承昌, 耿会涛, 李清富, 等. 不锈钢筋混凝土梁试验研究[J]. 公路交通科技:应用技术版, 2017, 145(1):15-18 LI Cheng-chang, GENG Hui-tao, LI Qing-fu, et al. Experimental study on concrete beams reinforced with stainless steel bars[J]. Journal of Guizhou University of Finance and Economics, 2017, 145(1):15-18
[9] 李强. 荷载和环境作用下锈蚀钢筋混凝土柱的力学性能[D]. 杭州:浙江大学, 2015. LI Qiang. Mechanical behavior of corroded RC columns under load and environment[D]. Hangzhou:Zhejiang University, 2015.
[10] 方廷. FRP筋-ECC-混凝土复合结构力学性能研究[D]. 杭州:浙江大学, 2015. FANG Ting. Mechanical properties of FRP bar-ECC-concrete composite structures[D]. Hangzhou:Zhejiang University, 2015.
[11] 杜修力, 张海芳, 张建伟. 高强混凝土柱小偏心受压性能尺寸效应试验研究[J]. 土木建筑与环境工程, 2013, 35(4):1-6 DU Xiu-li, ZHANG Hai-fang, ZHANG Jian-wei. Experimental analysis of size effect of high-strength concrete column under small eccentric loading[J]. Journal of Civil, Architectural and Environmental Engineering, 2013, 35(4):1-6
[12] 部门中华人民共和国住房和城乡建设部. 混凝土结构设计规范[M]. 北京:中国建筑工业出版社, 2011.
[13] RASMUSSEN K J R. Full-range stress-strain curves for stainless steel alloys[J]. Journal of Constructional Steel Research, 2003, 59(1):47-61.
[14] 段文峰, 邓泽鹏, 刘文渊, 等. 不锈钢S30408材料本构模型试验研究[J]. 钢结构, 2016, 31(5):37-40 DUAN Wen-feng, DENG Ze-peng, LIU Wen-yuan, et al. Experimental study of the constitutive model of stainless steel S30408[J]. Steel Constuction, 2016, 31(5):37-40
