Dynamic analyses of steel-reinforced super high-strength concrete columns

被引：1

作者：

Jia J. ^{[1
]}

Jiang R. ^{[1
]}

Xu S. ^{[1
]}

Hou T. ^{[2
]}

机构：

[1] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology

[2] China State Construction International Design Consultant Co., Ltd.

来源：

Frontiers of Architecture and Civil Engineering in China | 2007年 / 1卷 / 2期

关键词：

Axial load ratio; Ductility; Seismic performance; Steel reinforced super high-strength concrete columns; Stirrup reinforcement ratio;

D O I：

10.1007/s11709-007-0030-2

中图分类号：

学科分类号：

摘要：

The dynamic behaviors of steel-reinforced super high-strength concrete columns under seismic loading were studied with a series of experiments. Thirteen specimens, with concrete strengths ranging from 94.9 to 105.4 MPa and shear-span ratios of 2.75, were manufactured. The axial load ratio and the stirrup reinforcement ratio were the main experimental variables affecting the dynamic behavior of the specimens. The columns under low cyclic lateral loading mainly failed in the flexural-shear mode. Shear force-displacement hysteretic curves and skeleton curves were drawn. The coefficients of the specimens' displacement ductility were calculated. Experimental results indicate that ductility decreases while the axial load ratio increases, but it increases when the stirrup reinforcement ratio increases. The limit values of the axial load ratio and the minimum stirrup reinforcement ratio of the columns were investigated to satisfy definite ductility requirements. These values were suggested as references of engineering applications and of the amendment of the current Chinese design code of steel reinforced concrete composite structures. © Higher Education Press 2007.

引用

页码：240 / 246

页数：6

共 9 条

[1]

Chengchih C., Nanjiiio L., Analytical model for predicting axial capacity and behavior of concrete encased steel composite stub columns, Journal of Constructional Steel Research, 62, pp. 424-433, (2006)

[2]

Roeder C.W., Overview of hybrid and composite systems for seismic design in the United States, Engineering Structures, 20, 4-6, pp. 355-363, (1998)

[3]

Morino S., Recent developments in hybrid structures in Japan-research, design and construction, Engineering Structures, 20, 4-6, pp. 336-346, (1998)

[4]

Weng C.C., Yen S.I., Comparisons of concrete-encased composite column strength provisions of ACI code and AISC specification, Engineering Structures, 24, pp. 59-72, (2002)

[5]

Hajjar J.F., Composite steel and concrete structural systems for seismic engineering, Journal of Constructional Steel Research, 58, pp. 703-723, (2002)

[6]

Thennou G.E., Elnashai A.S., Plumier A., Et al., Seismic design and performance of composite frames, Journal of Constructional Steel Research, 60, pp. 31-57, (2004)

[7]

Lieping Y., Ehua F., Zhenghai Z., Et al., Axial load limit for steel reinforced concrete columns, Journal of Building Structures, 18, 5, pp. 43-50, (1997)

[8]

Jinqing J., Shilang X., The limited values of axial compression ratio of steel reinforced high-strength concrete short columns, Journal of Building Structures, 24, 1, pp. 14-18, (2003)

[9]

Jinqing J., Shilang X., Guofan Z., Influence of stirrup ratio on limiting value of ratio of axial compression stress to strength for steel high-strength concrete columns, China Civil Engineering Journal, 35, 6, pp. 39-43, (2002)

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