损伤混凝土强度的确定方法研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (400 KB) HTML ()
输出: BibTeX | EndNote (RIS)

摘要 This study aims to reflect the original strength of concrete material objectively and accurately by determining the concrete damage degree quantitatively and identifying the relation between damage variable and strength. According to uniaxial compressive stress-strain curve and the strain equivalent principle, the stress-strain curve of damaged concrete is obtained while the concrete subjected to circulate loading has different degrees of damage and strain is beyond that corresponding to peak stress. The relation between the damage variable and concrete strain at different strength grades is derived. The corresponding strain is obtained by testing the damage variable of damaged concrete. The original strength of the concrete material is calculated according to the testing strength of core samples of damaged concrete with a height and diameter of 100 and 150 mm, respectively. Finally, the conclusion is verified by a test.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	和海芳
	张劲泉
	程寿山

关键词 ： bridge engineering, concrete strength, strain equivalence principle, damage, stress-strain curve

Abstract：This study aims to reflect the original strength of concrete material objectively and accurately by determining the concrete damage degree quantitatively and identifying the relation between damage variable and strength. According to uniaxial compressive stress-strain curve and the strain equivalent principle, the stress-strain curve of damaged concrete is obtained while the concrete subjected to circulate loading has different degrees of damage and strain is beyond that corresponding to peak stress. The relation between the damage variable and concrete strain at different strength grades is derived. The corresponding strain is obtained by testing the damage variable of damaged concrete. The original strength of the concrete material is calculated according to the testing strength of core samples of damaged concrete with a height and diameter of 100 and 150 mm, respectively. Finally, the conclusion is verified by a test.

Key words： bridge engineering concrete strength strain equivalence principle damage stress-strain curve

收稿日期: 2012-12-10

基金资助:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.200831822343)

通讯作者: HE Hai-fang, hf.he@rioh.cn E-mail: hf.he@rioh.cn

引用本文:

和海芳, 张劲泉, 程寿山. 损伤混凝土强度的确定方法研究[J]. Journal of Highway and Transportation Research and Development, 2013, 7(2): 63-68.
HE Hai-fang, ZHANG Jin-quan, CHENG Shou-shan. Determination Method for Damaged Concrete Strength. Journal of Highway and Transportation Research and Development, 2013, 7(2): 63-68.

链接本文:

http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/ 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2013/V7/I2/63

[1] HAN Jian-ping, WANG Fei-xing, WANG Zhi-hua. Discussion on Several Issues of Testing and Evaluating Concrete Strength by Drilling Core Method[M]. Earthquake Resistant Engineering and Retrofitting, 2008,30(2):109-117.(in Chinese)
[2] YANG Zhao-min, LI Nai-ping. Application of Small Diameter Core Sample to the Compressive Strength Identification of Concrete Structure[J]. Journal of Xi'an University of Architecture & Technology:Natural Science Edition,2002,34(4):407-409.(in Chinese)
[3] HE Ming, FU Xiao-ling, XU Dao-yuan. On Concrete Damage Models[J]. Journal of Fuzhou University:Natural Science Edition,1994, 22(4):109-114.(in Chinese)
[4] YANG Guang-song. Damage Mechanics and Composite Damage[M]. Beijing:National Defense Industry Press,1995. (in Chinese)
[5] XU Ji-shan. Strength Theory and Its Application[M].Beijing:China Water Power Press, 1984. (in Chinese)
[6] YU Hai-yang, WU Jian-hua, LI Qiang. A Review of Concrete Damage Constitutive Models[J]. Journal of Chongqing Jianzhu University, 2007, 29(2):68-72.(in Chinese)
[7] YU Tian-qing. Damage Theory and Its Application for Concrete Structure[J]. Bridge Construction, 1986(2/3):45-58. (in Chinese)
[8] QIAN Ji-cheng, ZHOU Jian-fang. Two Concrete Damage Models and Their Application[J]. Journal of Hohai University, 1989, 17(3):40-43. (in Chinese)
[9] LOLAND K E. Continuous Damage Model for Load-response Estimation of Concrete[J]. Cement and Concrete Research, 1980(10):395-402.
[10] ZHANG Kui, GAO Yong-sheng,ZHANG Shao-ming. Damage Variable Proposed on Characterizing Micro-crack Damage[J]. Mechanics and Practice, 1995, 17(6):33-35. (in Chinese)
[11] GB50010-2002, Code for Design Concrete Structures[S].(in Chinese)
[12] GUO Zhen-hai, ZHANG Xiu-qin. Experimental Study on Stress-strain Full Curves of Concrete under Cyclic Loading[C]//Research Reports III by Institute of Anti-earthquake and Blasting-resistance Engineering, Tsinghua University. Beijing:Tsinghua University Press, 1981.(in Chinese)
[13] CECS 03:88, Technical Specification for Testing Concrete Strength with Drilled Core[S]. (in Chinese)
[14] ZHANG Yi-fei, KANG Jian-hua, WANG Zhong, et al. Determination of Concrete Strength Based on Small Sampling Data with Information Diffusion Theory[J]. Journal of Highway and Transportation Research and Development, 2007, 24(5):39-42. (in Chinese)