约束高强混凝土的基本关系研究
- 摘 要
-
约束高强混凝土的基本关系研究同 盈,梁兴文(西安建筑科技大学土木工程学院,西安 710055)[摘要] 基于83个约束高强混凝土试件的试验数据,分别分析了箍筋间距、体积配箍率、箍筋强度、混凝土强度对约束高强混凝土的峰值应力、峰值应变和极限应变的影响。结果表明,配箍特征值综合反映了上述因素的影响,是最主要的影响因素。建立了约束高强混凝土的峰值应力、峰值应变、极限应变与配箍特征值之间的关系。[关键词] 约束高强混凝土;配箍特征值;峰值应力;峰值应变;极限应变中图分类号:TU375.02,TU528.01文献标识码:A文章编号:1002-848X(2011)01-0077-02Study on the basic relationship of confined high-strength concreteTong Ying, Liang Xingwen(College of Civil Engineering, Xian University of Architecture and Technology, Xian 710055, China)Abstract:According to the experimental results of 83 confined high-strength concrete specimens, the influences of stirrup spacing, volume stirrup ratio, stirrup strength, concrete strength on peak stress, peak strain and ultimate strain of confined high-strength concrete were analyzed. The results show that confining reinforcement characteristic value is the synthetical reflection of the above-mentioned factors and the most important influencing factor. Taking confining reinforcement characteristic value as a parameter, the relations between peak stress, peak strain, ultimate strain and confining reinforcement characteristic value were respectively established.Keywords:confined high-strength concrete; confining reinforcement characteristic value; peak stress; peak strain; ultimate strain*国家自然科学基金资助项目(50678149)。作者简介:同盈,硕士,Email:tongying-218@163.com。参考文献[1]RICHART F E, BRANDTZAEG A, BROWN R L. A study of the failure of concrete under combined compressive stresses[R]. Urbana:University of Illi-nois at Urbana-champaign, 1928.[2]SOLIMAN M T M,YU C W. The flexural stress-strain relationship of concrete confined by rectangular transverse reinforcement[J]. Magazine of Concrete Research,1967,19(61):223-238.[3]SAATCIOGLU M,RAZVI S R. Strength and ductility of confined concrete[J]. Journal of Structural Engineering, ASCE, 1992,118(6):1590-1607.[4]林大炎,王传志. 矩形箍筋约束的混凝土应力-应变全曲线性能研究[M]//清华大学抗震抗爆工程研究室科学研究报告集. 北京:清华大学出版社,1980.[5]吴绮芸. 约束混凝土强度和变形的实验研究[R]. 中国建筑科学研究院,1982.[6]胡海涛,叶知满. 复合箍筋约束混凝土轴心受压短柱承载力计算[J].建筑结构,2002,32(4):12-13.[7]关萍,王清湘,赵国藩. 高强约束混凝土应力-应变本构关系的试验研究[J]. 工业建筑,1997,27(11):27-30.[8]胡海涛,叶知满. 复合箍筋约束高强混凝土应力应变性能[J]. 工业建筑,1997,27(10):23-28.[9]杨坤,史庆轩,王秋维,等. 高强箍筋约束混凝土轴心受压性能分析[J].西安建筑科技大学学报:自然科学版,2009,41(2):161-172.[10]钱稼茹,程丽荣,周栋梁. 普通箍筋约束混凝土柱的中心受压性能[J]. 清华大学学报:自然科学版,2002,42(10):1369-1373.[11]李立仁,余瑜,陈永庆. 不同配箍方式的轴压高强混凝土短柱承载力及延性试验研究[C]//高强与高性能混凝土及其应用专题研讨会论文集,1990.[12]SHEIKH S A,UZUMERI S M. Analytical model for concrete confinement in tied columns[J].Journal of the Structural Division, ASCE,1982,108(12):2703-2722.[13]MANDER J B, PRIESTLEY M J N,PARK R. Theoretical stress-strain model for confined concrete[J]. Journal of Structural Engineering, ASCE,1988,114(8):1804-1826.[14]张秀琴,过镇海,王传志. 反复荷载下箍筋约束混凝土的应力-应变全曲线方程[J]. 工业建筑,1985,15(12):18-22.[15]梁兴文,马乐为,邓明科. 混凝土结构课程教学中的若干问题[J]. 建筑结构,2008,38(S1):72-74.