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Priyo Suprobo
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Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Perancangan Interior Restoran China di Surabaya Novia Agatha Putri; Stephanus P Honggowidjaja; Priyo Suprobo
Intra Vol 6, No 2 (2018): Desain Interior 2017/2018
Publisher : Intra

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (998.23 KB)

Abstract

The design aims to solve the existing problems: 1) the lack of Chinese cultural elements and characteristics, 2) the absence of space to welcome guests such as lobby, and 3) the use of monotonous furnitures. Based on those problems, designer learns how to create an interesting, warm and cozy Chinese restaurant atmosphere with Chinese characteristics that is able to maximize the functionality of each room within the restaurant. The interior design of this Chinese restaurant located in Surabaya is also act as an introduction to modern Chinese culture towards society. Design Thinking method is used to get the maximum result during the design process. The design results in the establishment of a lobby facility, a semi-VIP area that offers scenic view, VIP rooms as private areas, the stage to accommodate music and dance performances, buffet area, and bar. In the end, hopefully the design of this Chinese restaurant could be an alternative solution to resolve the existing problems, especially in Surabaya.
Perancangan Fitness Center dengan Inovasi Indoor Jogging Track di Surabaya Ignatius Ivan Wijaya; Stephanus P Honggowidjaja; Priyo Suprobo
Intra Vol 6, No 2 (2018): Desain Interior 2017/2018
Publisher : Intra

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Abstract

Nowadays, there are a lot of fitness center that facilitate people’s need for health. The design and areas of fitness centers are very diverse due to people’s various needs. One of the needs in fitness center is generating indoor jogging track area. Users will be educated about the importance of cardiovascular exercise, that would be maximized if they do it without any machines. Moreover, it is also quite beneficial to reduce the boredom during the exercise even increase the social relationship among users of the facilities in it. The mision of this project is that people are being educated by the importance of jogging exercise. Indoor jogging track become the main focus in the design of this facility so it needs to be maximized to attract and improve user’s satisfaction. However, the other supporting facilities also need to be considered. Other designed facilities include reception area, café area, fitness area, yoga area, aerobics area, RPM area, and locker room.
Crack Mapping on Shear-critical Reinforced Concrete Beams using an Open Source Digital Image Correlation Software Benny Suryanto; Asdam Tambusay; Priyo Suprobo
Civil Engineering Dimension Vol. 19 No. 2 (2017): SEPTEMBER 2017
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.224 KB) | DOI: 10.9744/ced.19.2.93-98

Abstract

Three reinforced concrete beams, one with no shear reinforcement and two others with shear reinforcement ratios of 0.4% and 1.1%, were tested to investigate the influence of stirrup spacing on the mode of failure, overall strength and ductility. The results show that the beam reinforced with closely-spaced shear reinforcement failed in a ductile manner, whereas the other two beams with large stirrup spacing and no stirrup exhibited only a small measure of ductility and failed in a brittle manner. The importance of the provisions of maximum spacing is highlighted to ensure adequate anchorage for the stirrups and prevent a premature shear failure to occur. The application of a non-contact monitoring system employing the open source digital image correlation software Ncorr, an ordinary digital camera and a smartphone is demonstrated to provide a visualization of the cracking process throughout the load history.
NUMERICAL ANALYSIS STUDY OF THE EFFECT GEOPOLYMER CONCRETE COMPRESSIVE STRENGTH ON DUCTILITY OF REINFORCED CONCRETE BEAMS Muhammad Wildan Aziz; Priyo Suprobo; Yuyun Tajunnisa
Journal of Civil Engineering Vol 37, No 1 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v37i1.12193

Abstract

Geopolymer concrete that has polymer formwork is very likely to be used as reinforced concrete material with several advantages. The advantages of geopolymer concrete when compared to portland cement concrete are: resistant to acidic environments (corrosion resistance), better bond strength of reinforcement with concrete material, stable at high temperatures, higher fracture energy. Previous experimental studies found that the tensile strength, bond strength, and fracture energy of geopolymer concrete were better, leading to the hypothesis that the ductility value of geopolymer concrete was better than portland cement concrete. The identification of ductility values based on the compressive strength of concrete will be carried out in research using the finite element method using the 3D ATENA program. Several specimens with compressive strength of 25 MPa, 30 MPa, 35 MPa, 40 MPa, and 45 MPa were compared with their ductility values. The results showed that the 25 MPa specimen had the highest ductility value with 5.33, while the lowest ductility value is 45 MPa specimen with 3.39.
Application of Non-Linear Fiber Section Model on Spun Piles With and Without Concrete Infill Subjected to Cyclic Loading Estu Ema Apriliana; Candra Irawan; Priyo Suprobo
Journal of Civil Engineering Vol. 39 No. 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v39i1.7338

Abstract

This numerical analysis study predicts the behavior of spun piles with and withoutconcrete infill under cyclic flexural loading and constant axial load. A fibersection using STKO pre- and post-processor for the OpenSEES program wasemployed. Spun piles were modeled using displacement-based beam-columnelements with distributed plasticity and cyclic loading procedures withdisplacement control. The numerical method proposed for this research wasverified by comparing it to reliable experimental results.
Kajian metode penentuan kekuatan momen retak tiang pancang spun pile Candra Irawan; I Gusti Putu Raka; Priyo Suprobo
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.v35i1.7433

Abstract

This paper describes the results of a study carried out experimentally on the determination of the moment strength ofspun pile piles. The methods used are visual observation, load-displacement curve evaluation, and tensile strain analysis. Theexperimental results show that a load of data taken is delayed between 3 and 9 % compared to the results based on loaddisplacement curve. Analysis results from the load-deflection curve is similar to the tensile strain reading in the PC bar. Atcrack, there exist a sudden jump in the tensile strain of the PC bar where at the same time the stiffness of the load-deflectioncurve was changed.
PREDICTING THE FLEXURAL RESPONSE OF A REINFORCED CONCRETE BEAM USING THE FRACTURE-PLASTIC MODEL Asdam Tambusay; Priyo Suprobo
Journal of Civil Engineering Vol. 34 No. 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.7440

Abstract

This paper describes an attempt to predict the flexural response of a reinforced concrete (RC) beam using nonlinearfinite element analysis. To facilitate direct comparison, the beam was tested experimentally under four-point bending with theload increased monotonically. The load-deflection response, crack pattern and failure mode were observed in the experiment.Analysis incorporating the application of ATENA 3D was performed using the fracture-plastic model which is based on theclassical orthotropic smeared crack formulation and crack band model. The applicability of this model was demonstratedthrough detailed simulation of RC beam with identical geometry, reinforcement arrangement, and material properties. Fromthis study, it is found that the overall predicted responses are in very good agreement to those obtained from the experiment.It is also found that the feature in ATENA enables the presentation of reasonably maximum principal strains of concrete andrebar elements which can, therefore, be associated with the predicted crack bands.
SORPTIVITY AND CHLORIDE PENETRABILITY EVALUATION OF CONCRETE INCORPORATING FLY ASH AND SILICA FUME Wahyuniarsih Sutrisno; Gabriel Ghewa; Priyo Suprobo
Journal of Civil Engineering Vol. 34 No. 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.7445

Abstract

Diffusion is one of the the main mechanisms of fluid ingress into the concrete. However, in partially saturatedconcrete, the fluid will mainly be absorbed by the capillary suction mechanism, which associates with the sorptivity propertiesof the concrete. This paper presents the results of an experimental program to investigate the influence of Portland cementsubstitution with Silica Fume (SF) and Type F Fly Ash (FA) on the rate of absorption, which also known as sorptivity, andchloride penetration of concrete. The sorptivity of the concrete was evaluated according to ASTM 1585, while the chloridepenetration was evaluated according to ASTM C 1202. By substituting part of cement with FA and SF, it was found that thesorptivity of concrete is reduced. Furthermore, all type of concrete with supplementary material, including CFA, CSF andCSM, is confirmed to enhance the ability of concrete to resist chloride penetration compared yo normal concrete (NC).
An Experiment of Shear Strength Reinforced Geopolymer Concrete Beam Based High-Calcium Fly Ash with Varian Shear Span-to-Depth Ratio Moh. Safi’i Mansur; Priyo Suprobo; Yuyun Tajunnisa; Auliagitta Kumala Apsari
Journal of Civil Engineering Vol. 38 No. 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i03.7452

Abstract

This study discusses geopolymer-reinforced concrete beam's shear strength capacity by experimental observation using high-calcium fly ash as the main binder. This study observed the influence of shear span per effective depth ratio due to the geopolymer concrete beam's shear behavior and strength capacity. Two beams are designed to have diagonal tensile cracks; hence the shear failure state could be obtained. Each beam has similar properties by 150 mm in width, 250 mm in height, 1800 mm in length, 2D16 as the flexure bar reinforcement, and stirrups of Ø6-250 with 20 mm concrete cover. The research employed the four-point load bending testing with the load span difference of each beam, which will later be the study variable. The things sought in this study include the peak load-deflection curve, the shear capacity that occurs in geopolymer concrete beams, and the shear capacity comparison with ACI 318-19. The results of the tests that have been carried out show that type A geopolymer-reinforced concrete beam was more ductile than type B beams, with a percentage difference of about 21.49% in deflection. The shear strength at the ratio a/d of 2 was 115,04 kN, and the ratio a/d of 2.5 was 89,00 kN. As well as a comparison of the shear strength of the test results with calculations according to ACI 318-19 shows a ratio of 1.69. So it can be concluded that ACI 318-19 calculations were conservative.
Modelling of Reinforced Concrete Coupling Beams with Headed Bars: Verification and Parametric Studies Joshua F. Krisnajana; Asdam Tambusay; Benny Suryanto; Priyo Suprobo
Journal of Civil Engineering Vol. 38 No. 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i03.7454

Abstract

This paper explores the accuracy of nonlinear finite element procedures implemented in ATENA in predicting the load-deformation response of reinforced concrete coupling beams with headed bars under reversed cyclic loading. In this study, the coupling beam (incorporating headed bars) tested by Seo and co-workers in 2017 is analysed and its response at different lateral drifts is discussed. Parametric analyses, studying the influence of reinforcement layouts, are also presented. It is shown that the hysteresis loops of the coupling beam could be predicted accurately, along with the crack patterns at different stages of loading and failure mode. It is also shown that the omittance of headed bars resulted in more pronounced bond-slip effects and a more severe pinched response in the post-peak region, highlighting the importance of providing adequate headed reinforcement. A similar trend was observed in the coupling beam with the omittance of U-bars and horizontal transverse reinforcements, whereas the reduction of stirrups was found to increase the prominence of shear failure.
Co-Authors Asdam Tambusay Auliagitta Kumala Apsari Bambang Piscesa Benny Suryanto Candra Irawan Estu Ema Apriliana Faimun Faimun Gabriel Ghewa Harun Alrasyid Heppy Kristijanto I Gusti Putu Raka Ignatius Ivan Wijaya Joshua F. Krisnajana Moh. Safi’i Mansur Mudji Irmawan Muhammad Wildan Aziz Muhammad Wildan Aziz Ni Putu Ary Yuliadewi Novia Agatha Putri Stephanus P Honggowidjaja Wahyuniarsih Sutrisno Yuyun Tajunnisa