Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Journal of Civil Engineering ELECTRON JISO : Journal of Industrial and Systems Optimization
Dwi Prasetya
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : Journal of Civil Engineering

 1 
3D non-linear finite element analysis of concentrically loaded high strength reinforced concrete column with GFRP bar Adhi Dharma Prasetyo; Bambang Piscesa; Harun Alrasyid; Dwi Prasetya
Journal of Civil Engineering Vol. 35 No. 1 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i1.7421

Abstract

The use of High Strength Concrete (HSC) material in Reinforced Concrete (RC) column has become widely used.HSC was found to be durable, strong in compression, but it has low ductility. This low ductility of HSC can be improved byproviding confinement. However, for HSC with concrete strength higher than 70 MPa, additional clause for confinement in ACI318-19 generates denser arrangement of transverse bars and eventually creates weak planes between the concrete core and thecover. These weak planes can trigger early cover spalling. To reduce the utilization of confining bars, high-strength Glass FiberReinforce Polymer (GFRP) bar can be used. However, the performance of GFRP bar varies significantly from their uniaxialbehavior in tension or compression to the real performance when it is used as the main reinforcement. For that reason, thispaper tries to investigate the behavior of HSC RC column with bars made of conventional steel rebar and with GFRP bars. Dueto limited data on the strain gauge reading on the GFRP bars from the available test result, an inverse analysis is carried outto determine the best stress-strain curve for GFRP bars used as the main reinforcement. For that purpose, an inhouse finiteelement package called 3D-NLFEA is used. From the comparisons, it was found out that the peak load, softening behavior, andthe concrete core enhancement prediction agrees well with the test result. From the inverse analysis, only 25% and 45% of theGFRP bar yield strength can be deployed when loaded under compression and tension, respectively.
Strength reduction factor evaluation of the circular reinforced concrete column with varying eccentricity ratio (e/h) Wahyuniarsih Sutrisno; Mudji Irmawan; Dwi Prasetya
Journal of Civil Engineering Vol. 35 No. 1 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i1.7430

Abstract

This paper presents strength reduction factor evaluation of circular reinforced concrete column with varyingeccentricity ratio (e/h) using the first-order-reliability-methods. The resistance properties of the reinforced concrete column isestimated using the monte-carlo simulation with random normally distributed material properties. Only dead and live loadcombination considered in the analysis. The parameters being investigated when evaluating the resistance of the reinforcedconcrete column are the concrete compressive strength, steel yield strength, coefficient of variation for both the concrete andsteel materials, reinforced concrete column size, and the longitudinal reinforcement ratio. When evaluating the strengthreduction factor, the safety index values are 3.0, 3.5, and 4.0. From the analysis, it was found out that the strength reductionfactor, for e/h higher than one and with safety index equal to 3.0, was equal to 0.9 which agrees well with the ACI 318 strengthreduction factor for tension-controlled region. However, for e/h lower than one and safety index equal to 3.0, the strengthreduction factor was equal to 0.6 which was lower than the ACI 318 strength reduction factor for compression-compressioncontrolled region.
DUCTILITY EVALUATION OF REINFORCED CONCRETE COLUMN MADE OF NORMAL- TO HIGH-STRENGTH CONCRETE UNDER CONSTANT AXIAL LOAD LEVEL COMBINED WITH FLEXURAL LOADING USING NONLINEAR SECTIONAL FIBER BASED MODEL Bambang Piscesa; Dwi Prasetya; Mudji Irmawan; Harun Alrasyid
Journal of Civil Engineering Vol. 34 No. 1 (2019)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i1.7461

Abstract

This study presents the ductility evaluation of reinforced concrete column made of normal-strength material using various empirical stress-strain model with nonlinear sectional fiber based analysis. The purpose is to evaluate the confinement requirement for reinforced concrete column under high axial load level. The concrete strength considered in the analysis are varies from 30 to 70 MPa while the steel reinforcing bar yield strength considered is only 400 MPa. The ductility is evaluated by using the customized ductility index measurement. The ratio of the concrete cover to the concrete core is set to 0.1 but not more than 40 mm. Attard and Setunge’s concrete constitutive model is used in this investigation. Cover spalling behavior is considered in the analysis by including the restrained shrinkage effect on the concrete strength and the softening behavior. From this study, it was found that extra confinement is necessary to maintain the expected minimum level of ductility.
Co-Authors Adhi Dharma Prasetyo Asmar Asmar Bambang Piscesa Harun Alrasyid Ika Widya Ardhyani Mudji Irmawan Rudy Kurniawan Wahyuniarsih Sutrisno