小偏心钢筋混凝土柱受压性能的尺寸效应试验
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
为分析小偏心钢筋混凝土柱受压性能的尺寸效应,对偏心距分别为0.1倍截面有效高度和0.25倍截面有效高度的2组几何相似的钢筋混凝土柱进行偏心受压破坏试验,柱截面几何尺寸分别为200mm×200mm,400mm×400mm,800mm×800mm,对比分析了其破坏形态、截面应变分布、承载力、变形能力,揭示了其尺寸效应规律。研究结果表明:小偏心钢筋混凝土柱的受压破坏形态和横截面应变分布规律基本相同,其尺寸效应不明显;承载力和变形能力存在明显尺寸效应,随着截面尺寸的增大,其安全储备降低,变形能力减弱。
To analyze size effect of small eccentric concrete columns under compressive loads,two groups of reinforced concrete columns,whose eccentricities were 0.1and 0.25 times effective height of sections,were produced,and the specimen sizes were 200mm×200mm,400mm×400mm,800 mm ×800 mm respectively.Damage mode,sectional strain distribution,bearing capacity and deformability of reinforced concrete columns were compared to reveal the size effect law.The results show that the size has less effect on damage mode and the sectional strain distribution of columns,and the size effect laws on bearing capacity and deformability of columns are obvious.The safety storage and deformability of columns decrease with the size increasing.
引文
[1]BAZANT Z P,CHEN E P.Scaling of Structural Failure[J].Applied Mechanics Reviews,1997,50(10):593-627.
    [2]钱觉时,黄煜镔.混凝土强度尺寸效应的研究进展[J].混凝土与水泥制品,2003(3):1-5.QIAN Jue-shi,HUANG Yu-bin.Review of Size Effect on Strength of Concrete[J].China Concrete and Cement Products,2003(3):1-5.
    [3]LESSARD M,CHAALLAL O,AITCIN P C.Testing High-strength Concrete Compressive Strength[J].ACI Materials Journal,1993,90(4):303-308.
    [4]SENER S,BARR B I G,ABUSIAF H F.Size-effect Tests in Unreinforced Concrete Columns[J].Magazine of Concrete Research,1999,51(1):3-11.
    [5]杜修力,袁健,周宏宇,等.钢筋混凝土梁在低周反复荷载作用下受剪性能的尺寸效应试验研究[J].地震工程与工程振动,2011,31(5):30-38.DU Xiu-li,YUAN Jian,ZHOU Hong-yu,et al.The Experimental Study of Size Effect on Shear Capacity of Reinforced Concrete Beam Under Low Cyclic Loading[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(5):30-38.
    [6]BROCCA M,BAZANT Z P.Size Effect in Concrete Columns:Finite-element Analysis with Microplane Model[J].Journal of Structural Engineering,2001,127(12):1382-1390.
    [7]杜修力,符佳,张建伟.钢筋混凝土柱轴心受压性能尺寸效应的大比尺试验研究[J].土木工程学报,2010,43(增):1-8.DU Xiu-li,FU Jia,ZHANG Jian-wei.The Experimental Study on Size Effect of the Large-size Reinforced Concrete Column Under Axial Loading[J].China Civil Engineering Journal,2010,43(S):1-8.
    [8]周宏宇,李振宝,杜修力.RC受弯构件正截面极限承载力尺寸效应研究[J].武汉理工大学学报,2011,33(10):83-87.ZHOU Hong-yu,LI Zhen-bao,DU Xiu-li.Study on Size Effect of Normal Section Ultimate Bearing Capacity of RC Flexural Members[J].Journal of Wuhan University of Technology,2011,33(10):83-87.
    [9]CANBAY E,OZCEBE G,ERSOY U.High-strength Concrete Columns Under Eccentric Load[J].Journal of Structural Engineering,2006,132(7):1052-1060.
    [10]BAZANT Z P,KWON Y W.Failure of Slender and Stocky Reinforced Concrete Columns Tests of Size Effect[J].Materials and Structures,1994,27(2):79-90.
    [11]BAZANT Z P,PLANAS J.Fracture and Size Effect in Concrete and Other Quasibrittle Materials[M].Boca Raton:CRC Press,1998.
    [12]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced Concrete Theory and Analyses[M].Beijing:Tsinghua University Press,2003.
    [13]沈蒲生,梁兴文.混凝土结构设计原理[M].北京:高等教育出版社,2007.SHEN Pu-sheng,LIANG Xing-wen.Principles of Reinforced Concrete Structures[M].Beijing:Higher Education Press,2007.
    [14]GB 50152—92,混凝土结构试验方法标准[S].GB 50152—92,Standard Methods for Testing of Concrete Structures[S].
    [15]GB 50010—2010,混凝土结构设计规范[S].GB 50010—2010,Code for Design of Concrete Structures[S].
    [16]BAZANT Z P.Size Effect on Structural Strength:A Review[J].Archive of Applied Mechanics,1999,69:203-225.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心