Seismic Design and Behavior of Reinforced Concrete Columns With Interlocking Spirals

10.14359/4125 ◽  
1993 ◽  
Vol 90 (2) ◽  
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Interlocking Spirals ◽  
And Behavior

scholarly journals Behaviour of Rectangular Reinforced Concrete Columns with Disproportionate Cross-Section Dimensions Subjected to Compression and Biaxial Bending - Case Study

2020 ◽  
Vol 9 (1) ◽  
pp. 94-107
Author(s):  
Savu Adrian-Alexandru
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Seismic Design ◽  
Concrete Columns ◽  
Biaxial Bending ◽  
Seismic Behaviour ◽  
Reinforced Concrete Columns ◽  
Seismic Design Code ◽  
Interaction Curves

Abstract The purpose of the current paper is to raise awareness on the behaviour of rectangular reinforced concrete columns with disproportionate cross-section dimensions subjected to compression and biaxial bending, considering the fact that in the current structural design process, the design of columns is usually done with respect to each of the two principal directions without considering their combined effect. The paper is based on a case study regarding a building that is currently in the design phase, in which to obtain a correct seismic behaviour, rectangular columns with disproportionate cross-section dimensions were used. The design of both the building and the columns follows the Romanian seismic design codes (“P100-1/2013 - Seismic design code - Part 1 - Design provisions for buildings” and “SR-EN 1998/2004 - Design of structures for earthquake resistance”). Results were compared and conclusions were drawn based on the interaction curves and interaction surfaces computed with expressions from specialized literature and sectional analysis software.

scholarly journals Yield curvature for seismic design of circular reinforced concrete columns

2010 ◽  
Vol 62 (10) ◽  
pp. 741-748 ◽  
Author(s):  
M.Neaz Sheikh ◽  
H.H. Tsang ◽  
T.J. McCarthy ◽  
N.T.K. Lam
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Concrete Columns ◽  
Reinforced Concrete Columns

scholarly journals Anchorage of transverse reinforcement in rectangular reinforced concrete columns in seismic design

1985 ◽  
Vol 18 (2) ◽  
pp. 165-190
Author(s):  
H. Tanaka ◽  
R. Park ◽  
B. McNamee
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Cross Sections ◽  
Compressive Load ◽  
Seismic Loading ◽  
Concrete Columns ◽  
Earthquake Resistance ◽  
Transverse Reinforcement ◽  
Reinforced Concrete Columns ◽  
Major Variable

Four reinforced concrete columns with 400 mm (15.7 in) square cross sections were tested under axial compressive load and cyclic flexure to simulate severe seismic loading. The longitudinal reinforcement consisted of eight bars. The transverse reinforcement consisted of square perimeter hoops surrounding all longitudinal bars and cross ties between the intermediate longitudinal bars. The major variable of the study was the type of anchorage used for the hoops and cross ties. The anchorage details involved arrangements of perimeter hoops with 135° end hooks, cross ties with 90° and/or 180° end hooks, and cross ties and perimeter hooks with tension splices. Conclusions were reached with regard to the effectiveness of the tested anchorage details in columns designed for earthquake resistance.

Effect of Axial Compression Ratio on Seismic Behavior of GFRP Reinforced Concrete Columns

2020 ◽  
Vol 20 (06) ◽  
pp. 2040004
Author(s):  
Li Sun ◽  
Zeyu Yang ◽  
Qiao Jin ◽  
Weidong Yan
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Axial Compression ◽  
Seismic Design ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Axial Compression Ratio ◽  
Energy Dissipation Capacity

Traditional reinforced concrete columns have demonstrated poor seismic performance especially in corrosive environment as the reinforcement bars experience severe corrosion under such conditions. To overcome the problem of steel corrosion, glass fiber-reinforced polymer (GFRP) reinforced concrete columns have gained significant attention in recent years. However, the seismic performance of GFRP reinforced concrete column is not well understood yet. One of the main challenges associated with the use of GFRP bars is its brittle behavior. Therefore, it is necessary to investigate the mechanical properties and failure modes of GFRP reinforced concrete structures under seismic action. In this research, the seismic behavior of GFRP reinforced concrete columns and conventional columns under different axial compression ratios are analyzed by low-cycle repeated pseudo-static loading tests. As a result, the deformation and the seismic energy dissipation capacity of GFRP reinforced concrete columns are investigated and discussed. Furthermore, the failure mechanism of GFRP bar structure is studied to provide the basis for improving the seismic design method of GFRP reinforced concrete structure and modifying the code for seismic design. In addition, the influence of axial compression ratio on the seismic behavior of full GFRP reinforced concrete columns is investigated. The results of this experiment demonstrate that with the increase of axial compression ratio, the ultimate bearing capacity of GFRP reinforced concrete columns increases, while the deformation and the cumulative energy dissipation capacity decrease.

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