In order to study the seismic behaviors of composite walls in the frozen thawing atmosphere, the accelerated corrosion tests for 4 pieces of single span combination walls and 4 pieces double span of combination walls were conducted by applying the technique of artificial climate accelerated Freeze-thaw, and the quasi-static tests were carried out. The results showed that specimens were identified for shear failure under low cyclic loadings. The failure mode of composite walls was influenced by freeze-thaw environment. With the increasing freezing- thawing cycles, cracking load and the ultimate load are all reduced, the stiffness and energy dissipation of brick masonry combination walls degenerated with different extents, cracking displacement and the ultimate displacement are gradually increased. Under the same freezing- thawing cycles, the bearing ability and energy dissipation capacity of double-span combination walls are relatively higher than single-span combination walls,hysteretic curve is more fat, ductility coefficient is 1.2 times higher than single-span composite walls, stiffness degradation rate was significantly lower. The ultimate bearing capacity, deformation capacity and seismic behavior are effectively improved in the presence of the tied columns. In the end,the formula of shear capacity of composite wall is presented. And the calculating results agree well with test results.
郑山锁,牛丽华,程明超,孙龙飞. 冻融环境下砖砌体组合墙的抗震性能试验[J]. 振动与冲击, 2017, 36(17): 157-164.
ZHENG Shansuo, NIU Lihua, CHENG Mingchao, SUN Longfei . Experimental research on seismic behaviors of composite walls in the frozen thawing atmosphere. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(17): 157-164.
[1] 苑振芳,刘斌,苑磊. 砌体结构的耐久性[J]. 建筑结构,2011,41(4):117-121.
Yuan Zhenfang, Liu Bin,Yuan Lei. Durability of masonry structures [J]. Building Structures, 2011,41(4):117-121.(in Chinese)
[2] 白国良,浮广明,权宗刚等.页岩烧结保温砌块超薄灰缝墙体抗震性能试验研究[J].建筑结构学报,2014,35(10): 111-121.
Bai Guoliang, Fu Guangming. Quan Zonggang. Experimental Study on seismic behavior of shale fired heat-insulation block walls with ultra-thin mortar joint [J]. Journal of Building Structures,2014,35(10):111-121. (in Chinese)
[3] 肖建庄,黄江德,姚燕.再生混凝土砌块墙体抗震性能试验研究[J].建筑结构学报,2012,33(2):100-109.
Xiao Jianzhuang, Huang Dejiang, Yao Yan et al. Test on seismic behavior of recycled concrete block walls [J].Journal of Building Structures,2012,33(2):100-109. (in Chinese)
[4] 杨军伟,陈利群,祝晓庆.混凝土多孔砖墙体抗震性能试验研究[J].工程力学,2008,25(9):126-133.
YANG WEI-jun, CHEN Li-qun, ZHU Xiao-qing. Experimental study on seismic behavior of concrete. [J] Engineering Mechanics, 2008,25(9):126-133. (in Chinese)
[5] 周洋,郭讯,孙丽等.钢筋混凝土构造柱约束砖砌体墙片抗震性能试验研究[J]地震工程与工程震动,2014,34(6):160-168.
ZHOU Yang, GUO Xun, SUN Li et al. Experimental investigation on seismic performance of confined masonry wall with reinforced tied columns[J]Earthquake engineering and engineering dynamics, 2014,34(6):160-168. (in Chinese)
[6] J.J. Perez Gavilan, L.E. Flores, and S. M. Alcocer. An Experimental Study of Confined Masonry Walls with Varying Aspect Ratios [J].Earthquake Spectra, 2015, 31(2):945-968.
[7] 邓明科,樊鑫淼,高晓军等. ECC面层加固受损砖砌体墙抗震性能试验研究[J].工程力学,2015,32(4):121-129.
Deng Ming-ke, Fan Xin-miao, Gao Xiao-jun et al. Experimental investigation on seismic performance of damaged brick masonry wall strengthened with ECC splint [J] Engineering Mechanics, 2015,32(4):121-129. (in Chinese)
[8] Cristina Gentilini, Elisa Franzoni, Simine Bandini, Lucio Nobile. Effect of salt crystallization on the shear behavior of masonry walls: An experimental study [J]. Construction and Building Materials, 2012.
[9] Pietro Bocca1 and Alessandro Grazzini. Mechanical Properties and Freeze-Thaw Durability of Strengthening Mortars [J]. Journal of materials in civil engineering, 2013, 25(2): 274-280.
[10] ASTM C67-14 Standard test methods for sampling and testing brick and structural clay tile[S]. West Conshohocken, PA: American Society for Testing and Materials(ASTM),2007.
[11] JGJ/T70—2009 建筑砂浆基本性能试验方法标准[S] .北京:中国建筑工业出版社,2009.
JGJ/T70—2009 Standard for test method of basic properties of construction mortar [S]. Beijing: China Architecture &Building Press, 2009. (in Chinese)
[12] JGJ101-96.建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996.
JGJ101-96. Specification of testing methods for earthquake resistant building [S].Beijing: China Architecture &Building Press, 2009. (in Chinese)
[13] 郑山锁,孙龙飞,刘小锐,杨威.近海大气环境下锈蚀RC框架节点抗震性能试验研究[J].土木工程学报,2015,48(12):63-71.
Zheng Shansuo, Sun Longfei, Liu Xiaorui, Yang Wei. Experimental research on seismic behaviors of beam-column joints of corroded RC frame in the coastal atmosphere[J]. China Civil Engineering Journal 2015,48(12):63-71. (in Chinese)
[14] 姚谦峰.土木工程结构试验 第2版[M].北京:中国建筑工业出版社.2008.
Yao Qian feng. Civil engineering structural experiment [M]. Beijing: China Architecture &Building Press, 2008. (in Chinese)