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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

27卷

期数:

2010年03期

页码:

121-126

栏目:

出版日期:

2010-09-20

文章信息/Info

Title:

Seismic Ductility of Concrete Columns with Different Reinforcement Patterns

作者:

董三升,赵均海

长安大学 建筑工程学院,陕西 西安 710061

Author(s):

DONG San-sheng, ZHAO Jun-hai

School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China

关键词:

配筋形式;  柱;  抗震延性;  有限元;  裂缝

Keywords:

reinforcement pattern;  column;  seismic ductility;  finite element;  crack

分类号:

TU443

DOI:

-

文献标志码:

A

摘要:

针对几种不同配筋形式柱的抗震延性问题,采用有限元软件ANSYS进行了相同体积配筋率、不同配筋形式柱在给定轴力下单调水平加载过程的非线性数值模拟,得到了几种不同配筋形式柱的延性系数; 利用文献中已经被证明的理论公式,对方钢管混凝土柱在水平荷载下的极限承载力进行了计算,并将计算结果与ANSYS有限元数值模拟结果进行了对比分析。结果表明:钢管混凝土柱的延性最好、极限承载力最高,核心型钢混凝土柱和核心配筋混凝土柱的延性及承载力相当,3种柱的抗震延性均远比普通钢筋混凝土柱好; 该建模方法、参数设置及结论正确。所得结论可为工程设计时优选柱的配筋形式提供参考。

Abstract:

For the seismic ductility of concrete columns with different reinforcement patterns, the nonlinear numerical simulation was carried out by using finite element software ANSYS for the same volumetric reinforcement ratio and concrete columns with different reinforcement patterns under given axial and monotonic horizontal loading. Meanwhile, the ductility coefficients of concrete columns with different reinforcement patterns were obtained. Theoretical formulas obtained in the literature were used to calculate the ultimate bearing capacity of concrete-filled square steel tube(CSST)column under horizontal load, which were compared with finite numerical simulation results in ANSYS. The results indicate that concrete-filled square steel tube column has the highest seismic ductility and ultimate bearing capacity, core steel reinforced concrete(CSRC)column and concrete with central reinforcement(CCR)column have the same seismic ductility and bearing capacity, and the seismic ductilities of three kinds of columns are higher than those of reinforced concrete(RC)columns. The modeling methods, parameters used in software ANSYS and the conclusions are correct. The result of study can provide a reference for the optimization of reinforcement patterns of concrete columns in engineering design practice.

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相似文献/References:

备注/Memo

备注/Memo:

收稿日期:2010-06-10
基金项目:陕西省自然科学基础研究计划项目(2007E₂20); 陕西省自然科学基础研究计划项目(SJ08E₂04)
作者简介:董三升(1973-),男,陕西大荔人,讲师,工学博士研究生,E-mail:dongsansheng9225@163.com。

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更新日期/Last Update: 2010-09-20