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A platform for research: civil engineering, architecture and urbanism
Compressive Stress-Strain Behavior of R/C Concrete Columns Using Opposing Spirals
This paper investigates the behavior of high strength concrete bridge columns under monotonic axial loading. The columns are confined with single conventional spiral or two cross spirals. The two opposing spirals (cross spirals) were developed to confine circular columns in order to enhance their strength and ductility. This new technique facilitates the passage of concrete while effectively increasing the volume of the confining reinforcement without violating the minimum spacing as specified by ACL Twenty one 1000 mm long circular high strength columns with a diameter of 350 mm with four different steel ratios, 0.016, 0.020, 0.024 and 0.028, and various spiral spacing's were built. The columns were tested under monotonic axial loading in order to study the influence of the new confinement technique on the axial compressive strength and ductility of bridge columns compared to columns confined with the conventional single spiral. Nine columns had various longitudinal steel ratios while maintaining the lateral confinement steel ratio to study the effect the longitudinal steel ratio has on strength and ductility. The other twelve columns had a longitudinal steel ratio of 0.02 with various spiral spacing's to study the effect of different lateral confinement steel ratios.
Compressive Stress-Strain Behavior of R/C Concrete Columns Using Opposing Spirals
This paper investigates the behavior of high strength concrete bridge columns under monotonic axial loading. The columns are confined with single conventional spiral or two cross spirals. The two opposing spirals (cross spirals) were developed to confine circular columns in order to enhance their strength and ductility. This new technique facilitates the passage of concrete while effectively increasing the volume of the confining reinforcement without violating the minimum spacing as specified by ACL Twenty one 1000 mm long circular high strength columns with a diameter of 350 mm with four different steel ratios, 0.016, 0.020, 0.024 and 0.028, and various spiral spacing's were built. The columns were tested under monotonic axial loading in order to study the influence of the new confinement technique on the axial compressive strength and ductility of bridge columns compared to columns confined with the conventional single spiral. Nine columns had various longitudinal steel ratios while maintaining the lateral confinement steel ratio to study the effect the longitudinal steel ratio has on strength and ductility. The other twelve columns had a longitudinal steel ratio of 0.02 with various spiral spacing's to study the effect of different lateral confinement steel ratios.
Compressive Stress-Strain Behavior of R/C Concrete Columns Using Opposing Spirals
Marvel, L. A. (author) / West, J. C. (author) / Hindi, R. A. (author)
Structures Congress 2008 ; 2008 ; Vancouver, British Columbia, Canada
Structures Congress 2008 ; 1-11
2008-10-14
Conference paper
Electronic Resource
English
Compressive Stress-Strain Behavior of R/C Concrete Columns Using Opposing Spirals
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