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ITS Journal of Civil Engineering
ISSN : 20861206     EISSN : -     DOI : -
Core Subject :
Journal of Civil Engineering merupakan jurnal bidang teknik sipil yang mengacu pada sistem standar internasional dalam pengelolaannya dengan tujuan utama memajukan bidang teknik sipil melalui publikasi ilmiah demi terwujudnya kemudahan mendapatkan ilmu dan informasi serta mendukung kemajuan teknologi.
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Articles 56 Documents
EVALUATION OF PERFORMANCE OF ASYMMETRICALLY DUAL SYSTEM STRUCTURES USING PUSHOVER AND TIME HISTORY ANALYSES Suprapto, Kurdian; Sudarto, Sudarto
Journal of Civil Engineering Vol 29, No 1 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (409.276 KB) | DOI: 10.12962/j20861206.v29i1.1737

Abstract

Performance-based design is becoming increasingly popular in designing a seismic resistant building. In the study, a twelvestory, reinforced concrete office building with asymmetric configuration using dual system located in seismic zone 6 was designed conforming to the Indone sian S e i smi c Code SNI 03-1726-2002 and the Indonesian Concrete Building Code SNI 03-2847-2002. The seismic performance of the building was evaluated using the Static Nonlinear (Pushover) Analysis and Inelastic Dynamic Time History Analysis. The performance point obtained from the pushover analysis was defined using various methods, such as FEMA 356, ATC-40, FEMA 440, and SNI 03-1726-2002. The result of the study indicated that the highest performance point was that obtained according to FEMA 356 and FEMA 440, whereas the lowest value was that in accordance with SNI-03-1726-2002. The roof displacement difference of that obtained from El-Centro dynamic analysis and performance-point pushover analysis can reach up to 5 cm and 2.4 cm in X- and Y-directions, respectively. This indicates that the pushover analysis is quite accurate for evaluating the corresponding building since the first mode shape is quite dominant.
A MULTINOMIAL LOGIT MODEL FOR ESTIMATING THE INFLUENCE OF HOUSEHOLD CHARACTERISTICS ON MOTORCYCLE OWNERSHIP: A Case Study in Denpasar City, Bali Wedagama, D. M. Priyantha
Journal of Civil Engineering Vol 29, No 1 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.98 KB) | DOI: 10.12962/j20861206.v29i1.1733

Abstract

This study investigates on household factors which influence motorcycle ownership in Denpasar city, Bali by using a multinomial logit model. The analyses show that the number of family members were about 0.83 and 2.6 times more likely to own, respectively, two and three motorcycles or more than one motorcycle. Total household income of less than one million rupiahs and between one and two million rupiahs were respectively 83.7 and 84.7 percents less likely to influence three motorcycles or more than one motorcycle ownership. Meanwhile, due to its high maneuverability on the congested road, a household was about 3.3 times more likely to own three motorcycles or more than one motorcycle. The probability analyses present that a double change in number of family member could influence one, two, and three motorcycles ownership or more by 19, 34, and 48 percents, respectively.
MODIFIED FIXED-ANGLE STRUT-AND-TIE MODEL FOR HIGH STRENGTH REINFORCED CONCRETE BEAMS Tavio, Tavio
Journal of Civil Engineering Vol 29, No 1 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.529 KB) | DOI: 10.12962/j20861206.v29i1.1734

Abstract

Nonlinear finite element analysis was applied to various reinforced concrete beams using a set of constitutive models established in the modified fixed-angle softened-truss model (MFA-STM). The model was implemented by modifying the general-purpose program FEAPpv. The model can take account of the six important characteristics of cracked reinforced concrete: (1) the softening effect of concrete in tension-compression; (2) the tension-stiffening effect of concrete in tension; (3) the average stress-strain curve of steel bars embedded in concrete; (4) the shear modulus of concrete; (5) the aggregate interlock; and (6) dowel action. The comparison shows the aggregate interlock and dowel action can reduce the overestimation of the shear capacity of high strength reinforced beam, especially the high strength reinforced deep beam without web reinforcement. Moreover, the model is suitable for being implemented numerical procedures due its simplicity.
ASPHALT-BOUND MASONRY BLOCK INCORPORATING CONSTRUCTION DEMOLITION WASTE Thanaya, I Nyoman Arya
Journal of Civil Engineering Vol 29, No 1 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v29i1.1735

Abstract

Utilization of waste aggregates for construction industry had been encouraged in line with increasing pressures to reduce exploration of natural aggregates. One alternative material that can be used as masonry block unit is the construction demolition waste (CDW) with asphalt as the binder (CDW block). The objective of this paper is to produce CDW block with a performance equal to the concrete block commonly used in the United Kingdom with a compressive strength between 3.5 MPa and 7 MPa and the specific creep strain less than 100 microstrain. The CDW block requires suitable particle size proportion, in order to obtain satisfactory results and to meet the demand of using minimum bitumen content and low compaction level. The CDW block requires sufficient heat curing to harden the asphalt. It was found that CDW materials were a very suitable material to be used for making CDW blocks. Compaction level of 2 MPa and curing regime of 200°C for 24 hours were sufficient and gave satisfactory results.
SCOUR NEAR SPILL-THROUGH TYPE ABUTMENT ON CLEAR-WATER SCOUR CONDITION FOR MULTI-SECTION CHANNELS Abdurrosyid, Jaji; Fatchan, Achmad Karim
Journal of Civil Engineering Vol 29, No 1 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.468 KB) | DOI: 10.12962/j20861206.v29i1.1736

Abstract

Scour is a natural phenomenon caused by erosion due to water flow on the alluvial channel bed and channel wall. In fact, scour happened in the bridge abutment is total scour, that is a combination between local scour, general scour, and constriction scour. This research aims to find the depth of scour near abutment in clear-water scour condition. This research was carried out using recirculation flume. The channel model was a compound channel and using steady-uniform flow. The abutment model was Spill-Through type (ST). The depth of scour near abutment was measured in each 6 hours running at 9 point of position. The research result shows that the maximum scour depth happened at point of separation. The depth of scour is mostly affected by Reynold and Froude number of flow. In general, the scour pattern happened around abutment is the same at every running which can be seen in the scour contour pattern that has half horseshoe shape.
AGREEMENT OPTIONS FOR VALUE-BASED GROUP DECISION ON BUILDING SYSTEM SELECTION Utomo, Christiono
Journal of Civil Engineering Vol 30, No 2 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (346.005 KB) | DOI: 10.12962/j20861206.v30i2.1718

Abstract

This paper presents a conceptual model of agreement options on negotiation support to facilitate the solving of group choice decision making problems in civil engineering. Group decision in construction is very complicated since many parties involved. Where a number of stakeholders are involved in choosing a single alternative from a set of solution alternatives, there are different concern caused by differing preferences, experiences, and background. Such civil engineering solutions as alternatives are referred to as agreement options, this paper describes a process of group decision and negotiation on building system selection for highway guardrail by assuring safety to provide barrier. The decision consists of three alternatives solution, three stakeholders and ten criteria. Determination of the optimal solution is based on a game theory model of n-person general sum game with complete information that involves forming coalitions among stakeholders.
THE EFFECT OF ADDITION OF FIBER REINFORCED ON CONCRETE WITH PLAIN AND DEFORM REBAR Suprapto, Kurdian
Journal of Civil Engineering Vol 30, No 1 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (692.969 KB) | DOI: 10.12962/j20861206.v30i1.1727

Abstract

In reinforced concrete structures, the interaction between concrete and steel bar are depend on its bonding strength. This study presents the behavior of bond-slip on fiber reinforced concrete with 10 mm plain rebar and deforms rebar. The concrete specimen is using 1% fiber reinforced. Furthermore the specimen is also compared with concrete without fiber reinforcement. The behavior that observed in this study is the effect concrete compressive strength, type of rebar, amount of rebar, and concrete cover due to bonding strength. The analysis results also compared between pull out method and semi beam method with and without fiber reinforcement. The analysis results shows the compressive strength, tensile strength, bonding strength, and bond stress of fiber reinforced concrete increase around 13.255%, 48.70%, 10.43% and 10.53%, respectively. Moreover, the deform rebar has better bonding strength compared to the plain rebar, which increase around 175% - 185%. Furthermore, for the group reinforcement, which is the spacing between rebar is 2.5 cm, is also effected the bond stress. The more amount of rebar will reduce the bond stress around 46.82% - 64.71%. In addition, the more thickness of concrete cover will also increase the bond stress.
EXPERIMENTAL STUDY ON SPLITTING TEST ON LIGHT WEIGHT CONCRETE USING BAMBOO FIBER AS AGGREGATE Zulfiar, M. Heri; Endarto, M. Riang
Journal of Civil Engineering Vol 31, No 1 (2011)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (190.333 KB) | DOI: 10.12962/j20861206.v31i1.1581

Abstract

Static load of construction element is the most general problem at civil constructon design, the use of bamboo as subtitution of agregate is the one of solution to reduce unit weight and static load of construction element. Based on consideration of structure analysis, bamboo is suitable as alternative of construction material. Focus of the research is type of bamboos fiber that used as concrete mix. The research observations consist of unit weight, compressive and cracking strength using flowing concrete method. The research using bamboos fiber at proportion 0/100% (Normal), 20/80%, 40/60%, 60/40%, 80/20% and 100/0% of conventional agregate. The speciments shape is concrete cylinder (15 cm diameter and 30 cm height) and speciment identification and cracking strenght be perform after 14 days treatment. The result of reasearch indicate decrease of cracking strenght and non linier relationship strength-strain characteristic.
A STUDY OF SEDIMENT DELIVERY RATIO USING AVSWAT-X IN THE CATCHMENT AREA OF PACAL RESERVOIR OF BOJONEGORO Erwanto, Zulis; Anwar, Nadjadji; Sarwono, Bambang
Journal of Civil Engineering Vol 30, No 2 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1080.875 KB) | DOI: 10.12962/j20861206.v30i2.1722

Abstract

Recently, the flood intensity that brought by tributary rivers in the catchment area of Pacal reservoir has increased, both in the quantity of runoff and sediment volume. The research aims to set up erosion rate modeling and find the formulation of the Sediment Delivery Ratio (SDR) at Pacal reservoir. The research used USLE and MUSLE methods as comparator to find sediment yield accuracy at Pacal reservoir, by applying ArcView SWAT-X software. Total average annual erosion rate in the catchment area of Pacal reservoir which has area 82 Km2 calculated using USLE and MUSLE methods are 159,31 ton/ha/yr and 582 ton/ha/yr respectively. MUSLE method resulted SDR which is most closely to SDRobservation if it is compared to USLE method. In this research, MUSLE - Sediment-Discharge Rating Curve method has evaluation values MSE = 0,08; RMSE = 0,29; and Nash = 0,75. Furthermore, Sediment Delivery Ratio at catchment area of Pacal reservoir can be formulated as 0,29 3,83. DAS Waduk Pacal SDR A with value of SDRZulis = 0,27 and sediment yield obtained from MUSLE method equal to 157,40 ton/ha/yr, while from USLE method equal to 43,09 ton/ha/yr. Evaluate sediment yield of MUSLE from SDRZulis to formulation of SDR of former researcher was value of Nash = 0,89; MAE = 0,01. Based on the research result, it is expected that the institution which has responsibility in managing the catchment area of Pacal reservoir would pay high attention to zonation map of erosion risk level and can overcome sedimentation in Pacal reservoir.
SURFACE WATER MODELLING AT LAMONG BAY Buana, Cahya; Widyastuti, Hera; Herijanto, Wahju; Prastyanto, Catur Arif; Kartika, Anak Agung Gde; Rahardjo, Budi; Istiar, Istiar
Journal of Civil Engineering Vol 29, No 2 (2009)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1800.145 KB) | DOI: 10.12962/j20861206.v29i2.1731

Abstract

Development of ports in the Lamong Bay may result in changes in flow pattern and velocity. In order for such development does not cause a big impact analysis should be made based on the understanding of the physical processes that will occur. This study examined the flow pattern and velocity of Lamong Bay. Existing model simulation results indicate that the direction of motion of the water flow to the front line of Gresik Ports were more integrated with the dominant direction were Northwest - Southeast, whereas in front of the Port of Tanjung Perak flow direction were dominated by West - East. The findings also suggest the direction of movement of currents in the Lamong Bay were more spread and dominated by the movement parallel to the contour of the coastline.