Experimental validation of seismic code provisions for RC columns

2007 ◽  
Vol 29 (6) ◽  
pp. 1153-1164 ◽  
Author(s):  
Elizabeth Vintzileou ◽  
T.P. Tassios ◽  
M. Chronopoulos
Keyword(s):  
Experimental Validation ◽  
Rc Columns ◽  
Seismic Code ◽  
Code Provisions

EFFECT OF ASPECT RATIO ON THE BEHAVIOR OF GFRP-RC CIRCULAR COLUMNS UNDER SIMULATED SEISMIC LOADING

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Amr Elsayed Mohammed Abdallah ◽  
Ehab Fathy El-Salakawy
Keyword(s):  
Aspect Ratio ◽  
Axial Load ◽  
Load Capacity ◽  
Load Level ◽  
Experimental Results ◽  
Rc Columns ◽  
Drift Capacity ◽  
Glass Fiber Reinforced ◽  
Axial Load Capacity ◽  
Code Provisions

The mechanical and physical properties of glass fiber-reinforced polymer (GFRP) reinforcement are different from steel, which requires independent code provisions for GFRP-reinforced concrete (RC) members. The currently available code provisions for GFRP-RC members still need more research evidence to be inclusive. For example, the available provisions for confinement reinforcement of FRP-RC columns do not consider the effects of column aspect ratio, which is not yet supported by any available research data. In this study, two full-scale spirally reinforced GFRP-RC circular columns were constructed and tested under concurrent seismic and axial loads. Both specimens had an aspect ratio (shear span-to-diameter ratio) of 7.0, while other two specimens with an aspect ratio of 5.0, from a previous stage of this study, were included for comparison purposes. For each aspect ratio, each specimen was loaded under one of two levels of axial load; 20 or 30% of the axial load capacity of the column section. All test specimens had a 35 MPa concrete compressive strength, 350-mm diameter, 85-mm spiral pitch and 1.2% longitudinal reinforcement ratio. The experimental results were analyzed in terms of hysteretic response, drift capacity and inelastic deformability hinge length. Based on the experimental results, it can be concluded that the aspect ratio affects the magnitude of secondary moments and inelastic deformability hinge length. In addition, the aspect ratio may affect drift capacity of GFRP-RC columns, depending on axial load level.

scholarly journals Performance of Rigid Steel Frames under Adequate Soil Conditions Using Seismic Code Provisions

2018 ◽  
Vol 08 (02) ◽  
pp. 91-101
Author(s):  
Muhammad Tayyab Naqash ◽  
Qazi Umar Farooq
Keyword(s):  
Steel Frames ◽  
Soil Conditions ◽  
Seismic Code ◽  
Code Provisions

Site Classification and Design Response Spectra for Seismic Code Provisions - (II) Proposal

2016 ◽  
Vol 20 (4) ◽  
pp. 245-256 ◽  
Author(s):  
Hyung Ik Cho ◽  
◽  
Satish Manandhar ◽  
Dong Soo Kim
Keyword(s):  
Response Spectra ◽  
Site Classification ◽  
Seismic Code ◽  
Code Provisions

Seismic code provisions for asymmetric structures: low period systems

1989 ◽  
Vol 11 (2) ◽  
pp. 92-96 ◽  
Author(s):  
A. Rutenberg ◽  
O.A. Pekau
Keyword(s):  
Seismic Code ◽  
Asymmetric Structures ◽  
Code Provisions

The Whittier Narrows, California Earthquake of October 1, 1987—Performance of Tilt-up Buildings

1988 ◽  
Vol 4 (2) ◽  
pp. 219-254 ◽  
Author(s):  
R. O. Hamburger ◽  
D. L. McCormick ◽  
S. Hom
Keyword(s):  
Seismic Code ◽  
General Performance ◽  
San Fernando ◽  
Code Provisions ◽  
Design And Construction

In the 1971 San Fernando earthquake the general performance of tilt-up structures was poor, and a number of collapses occurred. After this event substantial changes were made to seismic code provisions governing the design and construction of these buildings. The October 1, 1987 Whittier Narrows earthquake produced strong shaking (up to Modified Mercalli Intensity VIII) in an area containing thousands of tilt-up buildings of various ages. This recent earthquake thereby provided the first significant test of these new provisions.

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