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Ahmad Basshofi Habieb
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Journal of Civil Engineering
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 20861206     EISSN : 25799029     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Journal of Civil Engineering (eISSN 2579-9029/pISSN 2086-1206) is a new journal that preceded by the previous Civil Engineering Department ITS Journal which was well known as Jurnal Teknologi dan Rekayasa Sipil (TORSI). TORSI journal was established in March 1981. In 2009, TORSI journal name was changed to Journal of Civil Engineering. Journal of Civil Engineering is managed by Pusat Publikasi Ilmiah LPPM Institut Teknologi Sepuluh Nopember (ITS). Journal of Civil Engineering published at least five papers for each volume. Annually two volumes are published with the first volume is published within the period of January-June and the second volume is published within the period of July-December. The Peer-review process is online based using the OJS portal. Focus and Scope The Journal of Civil Engineering (JCE) publish scientific article which is specific for civil engineering. JCE article must be written either in Indonesian or English languages. The focus and scope of the journal are: 1. Structures (High-Rise Building, Bridges, Long-Span Bridges) 2. Materials (Concrete, Steel, Fiber-Reinforced Concrete, Composites) 3. Hydraulics and Hydrology 4. Geotechnics (Foundation, Embankment Stability) 5. Construction Management 6. Transportations (Highways, Trains, etc.) 7. Green Buildings and Architectures
Arjuna Subject : Teknik (semua kategori) - Bangunan dan Konstruksi
Articles 337 Documents
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Analysis of Road Maintenance Between Burda Fast And Hotmix: A Case Study in Road Section Bojonegoro (Pajeng) –Nganjuk (Guyangan) Samsul Widjajanto; Hera Widyastuti
Journal of Civil Engineering Vol. 40 No. 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v40i2.7407

Abstract

The East Java Provincial Government through the Public Works Department of Highways has a road improvement and maintenance work program to maintain road stability. However, in its implementation, it is often faced with less-than-ideal conditions, such as natural disasters, resulting in a reduced budget for the work program. Therefore, an alternative method for maintaining asphalt pavement is needed which has advantages in terms of cost efficiency, but does not reduce quality and also does not require a more complicated process compared to carrying out road maintenance work which was usually carried out in previous years, (by using Hotmix). In this research, fast burda was used as an alternative to Hotmix for asphalt road maintenance, namely making fast burda from 2 x 3 cm coarse aggregate, 1 x 2 cm aggregate, 1 x 1 cm aggregate, and 60/70 penetration asphalt. The method used in the research is to compare road maintenance work using fast burda and Hotmix. The analysis carried out in this research is a comparison of the duration of work time, service life and cost analysis between work using fast burda and using Hotmix. The results of this research show that the duration of work with a 1 m2 sample for asphalt road patching using hot mix is the same as road patching using fast burda. The service life of road patches using Hotmix is longer than road patching using fast burda, namely fast burda starts to experience damage in the 5th month, while Hotmix starts to experience damage in the 6th month. Meanwhile, in terms of costs, work using fast burda is cheaper compared to work using Hotmix, fast burda requires IDR303.355 per square meter, while Hotmix requires IDR318.84 per square meter. So the difference in implementation costs per square meter is IDR15.490. Burda can quickly be used as an alternative method for maintaining asphalt pavement when budget conditions are reduced due to national problems or natural disasters.
Finite element analyses on a small masonry house prototype retrofitted using frp strips Ahmad Basshofi Habieb; Marco Valente; Gabriele Milani
Journal of Civil Engineering Vol. 35 No. 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.7410

Abstract

This study presents a series of finite element analyses on the prototype of masonry house retrofitted using FRP strips.The model of the masonry house refers to the prototype scaled to 1:3 tested in an experimental campaign. The non-linear behaviorof masonry is modeled through the Concrete Damage Plasticity (CDP) model, while the FRP and adhesive are modeled as twoseparated isotropic solid materials with elastic-plastic behavior. A good agreement between experimental and numerical resultis obtained, indicating the increase of bearing capacity of the reinforced masonry prototype.
Resource-constrained project scheduling with ant colony optimization algorithm Niken A Savitri; I Nyoman Pujawan; Budi Santosa
Journal of Civil Engineering Vol. 35 No. 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.7412

Abstract

Resource allocation commonly becomes one of the critical problems in project scheduling. This issue usually occursbecause project managers estimate the schedule of activities and network time without considering resource availability.Resource-Constrained Project Scheduling Problem (RCPSP) links to the allocation of resources or set of resources into certainactivities in order to accomplish particular objectives. Various approaches have been performed to overcome RCPSP, includingthe heuristic approach. In this research, Ant Colony Algorithm is used to solve RCPSP. There are 11 examples of projects beinginvestigated with dissimilarity in-network and several activities. The implementation of the Ant Colony Algorithm resulted inthe percentage of a near-optimal solution of 63.64%. Besides, the duration obtained from the algorithm above the manualscheduling (assumed optimal) was only 4.29%. Sensitivity analysis was performed to understand how substantially the changesof ACO parameters influenced the result obtained from the algorithm. Based on the result, it could be concluded that theparameters of ACO have no significant effect to project duration.
Strut and tie model optimization for reinforced concrete bridge pier head structure using a genetic algorithm Bambang Piscesa; Tavio Tavio
Journal of Civil Engineering Vol. 35 No. 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.7413

Abstract

Strut and tie model (STM) is more suitable to design the pierhead structures which resist high shear forces transferredfrom the girders. These pierhead structures behave like the disturbed regions as in reinforced concrete deep beam. The designof the struts and ties elements requires the initial geometry configuration of the truss model where its boundaries are limited bythe shape of the pier head structures. To find the optimum topological shape of the truss model, the genetic algorithm (GA)optimization technique is used in this paper. The objective functions in the GA optimization consisted of minimizing the usageof concrete and steel reinforcement material and ensuring all the stress ratios of the strut and tie elements are less than equalto unity. Both prestressed and non-prestressed pierheads are investigated in this paper. The use of prestressing in the pierheadstructures reduces the stresses in the main tension tie significantly. Some shear tie and compression struts members also havealmost zero stresses due to the presence of prestressing forces. For these elements with zero stresses, the elements can beremoved and reduces the concrete and rebar materials usage. Furthermore, the genetic algorithm optimization is found to besuccessful to ensure all the stress ratio in the members to be less than equal to unity.
WAVE NUMERICAL MODEL OF SWELL AND SEA AT ROTE STRAIT Satria Damarnegara; Fuddoly Fuddoly; Dyah I Widyastuti
Journal of Civil Engineering Vol. 35 No. 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.7414

Abstract

A spectral wave numerical simulation based on SWAN is used to model 10 years wave climate at Rote Strait, NusaTenggara Timur province. ERA5 reanalysis data of total wave and wind is used for model forcing. Simulation results showwaves direction in Rote strait are coming from southeast and southwest. Waves direction at nearshore of southeast Timor islandcoast are coming from southeast because of refraction and diffraction. Waves height over 0.8 m occurs in 320 days in one year.50 years wave return period calculated at 2.68 m height. Indeed, port development in Rote strait area need to consider the downtime caused by waves and extreme wave forces in the design.
Strength reduction factor of square reinforced concrete column Wahyuniarsih Sutrisno; Bambang Piscesa; Mudji Irmawan
Journal of Civil Engineering Vol. 35 No. 2 (2020)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i2.7416

Abstract

Non-linear finite element analysis of reinforced concrete deep beam with web opening Ferry Alius; Bambang Piscesa; Faimun Faimun; Harun Alrasyid; Data Iranata
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.v35i1.7419

Abstract

The use of Reinforced Concrete (RC) deep beams in the building may require web openings or holes for electricaland mechanical utility passage. This web opening will change the behavior of the RC deep beam and may result in early crackseven at service load. Hence, it is important to use a suitable tool to predict the full response of the RC deep beam with theopening. For that purpose, a nonlinear finite element method using 3D-NLFEA software package which utilizes a plasticityfracture model is used to predict the behavior of RC deep beam. One deep beam specimen available in the literature isinvestigated. To study the effect of using structured and unstructured mesh, as well as different element types on the loaddeflection curve, the hexahedral and tetrahedral solid element was used. From the comparisons, it was observed that the crackpattern between two different meshes was not similar. Structured mesh often has straighter crack propagation compared to theunstructured mesh. The load-deflection curve for both models is similar and both models were performed satisfactorily inpredicting the peak load of the deep beam.
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.
Strut and tie model optimization for reinforced concrete deep beam using genetic algorithm Bambang Piscesa; Tavio Tavio
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.v35i1.7422

Abstract

This paper presents strut and tie model structural optimization of reinforced concrete deep beam using geneticalgorithm. Genetic algorithm is used as the optimization platform as it does not require differentiation of the exact mathematicalformulation to get the optimum solution. The force analysis is carried out using two-dimensional linear finite element methodwith truss element. The struts and ties design are based on ACI 318. One RC deep beam example is presented as an example.During optimization, there are two constraints which consisted of strength of the member alone and combination withdeformation limit of the nodes. The stress ratio for both struts and ties are set to not exceed unity while the deformation waslimited to 2.0 mm. From the optimization analysis, it can be concluded that genetic algorithm can be used to get the mostoptimum structural configuration which yield the most economical solution for design purposes. On the other hand, it is foundout that optimizing only the strength alone can yield a more economical solution compared to the design references. However,if deformation constraint is added in the optimization parameters, larger deep beam depth is required to satisfy the deformationlimits.
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.

Page 22 of 34 | Total Record : 337

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