Behavior of reinforced concrete rectangular aboveground tanks subjected to near-source seismic excitations

2012 ◽  
pp. 449-454
Author(s):  
M Hosseini ◽  
Sh Abizadeh
Keyword(s):  
Reinforced Concrete ◽  
Seismic Excitations

scholarly journals Developments in the design of ductile reinforced concrete frames

1979 ◽  
Vol 12 (1) ◽  
pp. 35-48 ◽  
Author(s):  
T. Paulay
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Response ◽  
Static Loading ◽  
Frame Analysis ◽  
Capacity Design ◽  
Concrete Frames ◽  
Seismic Excitations ◽  
Reinforced Concrete Frames ◽  
High Degree ◽  
Very High

A condensed step by step summary of the application of a recently published capacity design philosophy, as applied to earthquake resisting ductile reinforced concrete frames, is presented. The theoretical inelastic dynamic response of three prototype frames, so designed and subjected to particularly severe seismic excitations, is then reported. It is shown how the predicted maximum actions compare with those used in the design. The design quantities, derived from a modified conventional elastic frame analysis for a code specified lateral static loading, were found to ensure
a very high degree of, and yet economical and practical, protection against hinging in columns at and above the first floor.

IDENTIFICATION OF DAMAGE IN REINFORCED CONCRETE COLUMNS UNDER PROGRESSIVE SEISMIC EXCITATION STAGES

2011 ◽  
Vol 05 (02) ◽  
pp. 151-165 ◽  
Author(s):  
ZHISHEN WU ◽  
ADEKUNLE PHILIPS ADEWUYI ◽  
SONGTAO XUE
Keyword(s):  
Reinforced Concrete ◽  
Damage Identification ◽  
Concrete Columns ◽  
Shaking Table ◽  
Dynamic Loads ◽  
Strain Gauges ◽  
Experimental Investigations ◽  
Seismic Excitations ◽  
Reinforced Concrete Columns ◽  
Fbg Sensors

Prompt and accurate detection of realistic damage in constructed facilities is critical for effective condition assessment and structural health monitoring. This paper reports the experimental investigations of eccentric reinforced concrete columns mounted onto a shaking table and subject to progressively increasing seismic excitations. The investigation was aimed at studying the changes in the dynamic parameters in order to assess the structural conditions of the concrete columns after each post-seismic stage. The dynamic response of the structure was measured using accelerometers, traditional foil-strain gauges, and long-gauge fiber Bragg grating (FBG) sensors. The post-seismic conditions of the columns were evaluated via vibration-based damage identification methods. Results from this study demonstrate the applicability of specially packaged surface-mounted long-gauge FBG sensors for detecting the initiation and the progression of cracks due to reverse dynamic loads. The concept of modal macrostrain analysis was also introduced to identify and localize mild damage due to the applied seismic excitations of increasing intensities. The performance of the sensors for structural identification is also discussed.

Evaluation of the effects of spectrum-compatible seismic excitations on the response of medium-height reinforced concrete frame buildings

2006 ◽  
Vol 33 (10) ◽  
pp. 1304-1319 ◽  
Author(s):  
Nove Naumoski ◽  
Murat Saatcioglu ◽  
Lan Lin ◽  
Kambiz Amiri-Hormozaki
Keyword(s):  
Reinforced Concrete ◽  
Response Spectrum ◽  
Time History ◽  
Reinforced Concrete Frame ◽  
Seismic Excitations ◽  
Period Range ◽  
Design Spectrum ◽  
Concrete Frame ◽  
Frame Buildings ◽  
Artificial Accelerograms

Spectrum-compatible seismic excitations are required when dynamic time-history analysis is used for determining the response of a structure. This paper presents results from a study on the effects of different types of spectrum-compatible excitations on the response of medium-height reinforced concrete frame buildings. Two six-storey buildings designed for Vancouver and a five-storey building designed for Montréal were used in the study. Nonlinear time-history analyses were conducted by subjecting the buildings to selected ensembles of spectrum-compatible excitations (i.e., accelerograms). The ensembles used in the study included spectrum-compatible artificial accelerograms, simulated stochastic accelerograms, and recorded earthquake accelerograms (i.e., real accelerograms) scaled to the design spectrum ordinate at the fundamental building period and to the area under the design spectrum within the predominant period range of the building. The responses of the buildings resulting from spectrum-compatible artificial accelerograms and those from scaled real accelerograms were found to be quite similar. Based on the results of this study, the scaling of real accelerograms to spectral area is preferred for obtaining spectrum-compatible accelerograms.Key words: seismic, excitation, response, spectrum, accelerogram, building, drift, curvature, ductility.

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