细晶粒钢筋混凝土柱偏心受压性能试验研究

葛文杰; 张继文; 曹大富; 王必元; 潘玲珑

doi:10.13204/j.gyjz201312013

细晶粒钢筋混凝土柱偏心受压性能试验研究

doi: 10.13204/j.gyjz201312013

1.
1. 扬州大学建筑科学与工程学院,江苏扬州 225127;
2.
2. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京 210096

基金项目:

国家自然科学基金项目(51308490);江苏省自然科学基金项目(BK20130450);高校自然科学基金项目(13KJB560015);住房和城乡建设部科学技术计划项目(2013-K4-17);扬州市科技计划项目(2012149);东南大学混凝土及预应力混凝土教育部重点实验室开放基金项目

详细信息

作者简介:
葛文杰，男，1986年出生，博士，讲师。电子信箱:gewj@yzu.edu.cn

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出版历程
- 收稿日期: 2013-01-08
- 刊出日期: 2013-12-20

EXPERIMENTAL STUDY ON REINFORCED CONCRETE COLUMNS WITH FINE GRAIN STEEL BARS UNDER ECCENTRIC COMPRESSION

1.
1. College of Civil Science and Engineering,Yangzhou University,Yangzhou 225127,China;
2.
2. Key Laboratory of ＲC and PC Structure of Ministry of Education,Southeast University,Nanjing 210096,China

摘要

摘要: 对9根400 MPa级细晶粒钢筋混凝土柱开展偏心受压性能试验,研究轴向力偏心距、纵向受压钢筋配筋率、混凝土强度和长细比对柱偏心受压性能的影响,描述各试件的破坏过程,分析了其荷载-钢筋/混凝土应变曲线、荷载-挠度曲线以及破坏形态的特点。研究表明,现行混凝土结构设计规范关于钢筋混凝土偏心受压柱极限承载力、平均裂缝间距和最大裂缝宽度的计算理论与试验吻合较好。400 MPa级细晶粒钢筋屈服强度设计值取为360 MPa时,细晶粒钢筋混凝土偏压柱承载力具有足够的安全系数并偏向于保守。正常使用极限状态下,400 MPa级细晶粒钢筋混凝土大偏心受压柱在短期荷载作用下的最大裂缝宽度满足要求。
- 混凝土柱 /
- 细晶粒钢筋 /
- 偏心受压 /
- 试验研究
Abstract: The tests of nine concrete columns reinforced with fine grain steel bars under eccentric compression were made，the effects of experimental parameters such as eccentricity distance，longitudinal compressive reinforcement ratio，concrete strength and slenderness ratio on their compression performance were studied. Components'failure processes were described; load-strain curves of concrete and steel bars and load-deformation curves were analyzed. Experimental results show that theoretic values of eccentric ＲC column ultimate bearing capacity，average crack spacing and maximal crack width calculated by current code for design of concrete structures are in accordance well with the experimental values. Bearing capacities of eccentric ＲC columns reinforced with HＲBF400 have enough safety factors and tends to conservatively while the yield strength of HＲBF400 was considered as 360 MPa. Under normal service state，maximal crack widths of large compression columns under shot-term load meet the requirement of the current code.
- concrete columns /
- fine grain steel bars /
- eccentric compression /
- experimental study

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参考文献(11)

Lew H S,Reichard T W.Mechanical Properties of Concrete atEarly Ages[J].Journal of the American Concrete Institute, 1978,75(10): 533-542.

[2] Gardner N J.Effect of Temperature on the Early-Age Properties of Type I,Type III,and Type I/Fly Ash Concretes［J].ACIMaterials Journal, 1990, 87(1): 68-78.

[3] Kovler K.Testing System for Determining the Mechanical Behaviourof Early Age Concrete Under Restrained and Free UniaxialShrinkage[J].Materials and Structures, 1994, 27(7):324-339.

[4] 金贤玉, 沈毅, 李宗津, 等.混凝土早龄期受力对后期性能的影响[J].混凝土, 2003(7):35-37.

[5] 金南国, 金贤玉, 郑砚国, 等.早龄期混凝土断裂性能和微观结构的试验研究[J].浙江大学学报, 2005, 39(9):1374-1377.

[6] 张勇强, 林皋, 阎东明.混凝土早期强度的试验研究［J].沈阳建筑工程学院学报:自然科学版, 2003, 19(2):85-89.

[7] 沈毅.早龄期混凝土若干性能的研究［D].杭州:浙江大学建筑工程学院, 2004.

[8] Lew H S,Reichard T W.Mechanical Properties of Concrete atEarly Ages[J].ACI Journal Proceedings, 1978: 533-542.

[9] Donald Smith M.Early-Time Strength and Elastic Modules ofConcrete with High Proportions of Fly Ash[J].USAE WaterwaysExperiment, 2001(1):13-17.

[10] Jin-Keum Kima, Sang Hua Hanh, Young Chual Songc.Effect ofTemperature and Aging on the Mechanical Properties of ConcretePart Ⅰ.Experimental Results ［J].Cement and ConcreteResearch, 2002, 32(7):1087-1094.

[11] Jin-Keum Kima, Sang Hua Hanh, Young Chual Songc.Effect ofTemperature and Aging on the Mechanical Properties of ConcretePart Ⅱ［J].Cement and Concrete Research, 2002(32):1095-1100.

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