Gravity-Load-Designed Reinforced Concrete Buildings--Part I: Seismic Evaluation of Existing Construction

10.14359/1135 ◽  
1995 ◽  
Vol 92 (3) ◽  
Keyword(s):  
Reinforced Concrete ◽  
Seismic Evaluation ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
Gravity Load

Experimental Study on the Structural Performance of Beam-Column Joints in Old Buildings without Designed Shear Reinforcement under Earthquake

2017 ◽  
Vol 902 ◽  
pp. 33-40
Author(s):  
Cong Thuat Dang ◽  
Ngoc Hieu Dinh
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Shear Failure ◽  
Test Results ◽  
Shear Reinforcement ◽  
Reinforcing Bars ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
Gravity Load ◽  
Load Beam

Old reinforced concrete buildings constructed around 1980’s in many developing countries have been designed against mainly gravity load. Beam-column joints in these buildings contain slightly or no shear reinforcement inside the panel zones due to the construction convenience, and are vulnerable to shear failure in beam-column joints under the action of earthquake loads, especially for the exterior beam-column joints. This experimental study aimed to investigate the seismic performance of five half-scale exterior beam-column joints simulating the joints in existing reinforced-concrete buildings with non-shear hoop details. The test results showed that the structural performances of the beam-column joints under earthquake including failure mode, load-drift ratio relationship, shear strain of the joints and energy dissipation are strongly affected by the amount of longitudinal reinforcing bars of beams.

scholarly journals SHAPE INDEX FOR SEISMIC EVALUATION OF REINFORCED CONCRETE BUILDINGS

2002 ◽  
Vol 67 (560) ◽  
pp. 155-160 ◽  
Author(s):  
Toshikatsu ICHINOSE ◽  
Hisashi UMEMURA ◽  
Hidenaka KAGOHASHI ◽  
Thuat van DINH
Keyword(s):  
Reinforced Concrete ◽  
Shape Index ◽  
Seismic Evaluation ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings

A comparative study on the rapid seismic evaluation methods of reinforced concrete buildings

2021 ◽  
Vol 56 ◽  
pp. 102143
Author(s):  
T.P. Doğan ◽  
T. Kızılkula ◽  
M. Mohammadi ◽  
İ.H. Erkan ◽  
H. Tekeli Kabaş ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Comparative Study ◽  
Evaluation Methods ◽  
Seismic Evaluation ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings

scholarly journals Seismic Analysis of Reinforced Concrete Buildings in South of Iraq based on Different Codes

2018 ◽  
Vol 7 (4.20) ◽  
pp. 51
Author(s):  
Samir A. B. Al-Jassim ◽  
Haider Abdul Kareem Raheem
Keyword(s):  
Reinforced Concrete ◽  
Seismic Analysis ◽  
Time History ◽  
Building Code ◽  
Base Shear ◽  
Seismic Evaluation ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
South Of Iraq ◽  
Nonlinear Time History

Buildings in south of Iraq were designed for gravity loads only. Recent studies showed that the Badra-Amarah fault at the Iraq-Iran boarder is an active fault and could suffer a major damage. Hence seismic evaluation of existing buildings is getting more importance. The objective of this paper is to assess the seismic performance of two reinforced concrete buildings with six floors each, one has a shear wall and the other has not. The concentrated plasticity with nonlinear time history is adopted for the analysis. The spectrum matching method is used to scale three time-acceleration records to the expected seismic level in the region.  Three different codes are used for the analysis, the International building code-2012, the Uniform building code-1997 and the Iraqi seismic code-2017. Comparison of results showed that IBC-2012 gave the most conservative results in displacements, number and performance of plastic hinges and base shear. The Iraqi code gave the least values within 60% for the base shear and 18-50% for drifts. As a conclusion, the analyzed buildings are a little beyond the elastic level according to the Iraqi code, beyond the immediate occupancy level according to the UBC-1997 and near the collapse prevention level according to IBC-2012.  

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