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Journal of the Civil Engineering Forum

jcef
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Published by Universitas Gadjah Mada

ISSN : 25811037 EISSN : 25495925 DOI : -

Core Subject : Social, Engineering,

Civil Engineering, Building, Construction & Architecture Environmental Science

Journal of the Civil Engineering Forum (JCEF) is a four-monthly journal on Civil Engineering and Environmental related sciences. The journal was established in 1992 as Forum Teknik Sipil, a six-monthly journal published in Bahasa Indonesia, where the first publication was issued as Volume I/1 - January 1992 under the name of Forum Teknik Sipil.

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Articles 225 Documents

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The Comparison of a Roundabout Traffic Delay Estimation between SUMO and IHCM 1997 on Roundabout Tina Andriyana
Journal of the Civil Engineering Forum VOLUME: XXII/2 - MAY 2013
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.18911

Transportation is an important sector to support the development of countries in terms of highway design, road systems and traffic management. As users of transport infrastructure, human has close relationship to the field of transportation. Their driving behavior affects vehicle movements and may cause conflicts. In order to investigate the conflicts such as traffic delay, there are two different calculation methods using SUMO software and IHCM 1997 manually. The objective of this research is to compare the calculation methods of traffic delay using IHCM 1997 and SUMO which more appropriately with the actual condition.The research location is in Idröttsparken roundabout, Norrköping, Sweden which has four arms. The data collection is conducted during three days in the morning and afternoon. Types of data collection in this research were traffic flow and its turning, travel time and queue length. The queue length data is converted into traffic delay data for observation data. In SUMO, the traffic delay value is the mean halting duration. In IHCM 1997, the calculation of traffic delay needs several data i.e. roundabout geometric, capacity, and degree of saturation. To analyze data, the statistical method is used i.e. normality test, parametric and non-parametric test and also linear regression method.The result showed the traffic delay in observation data is higher than delay in SUMO result and IHCM 1997 calculation. The statistical results showed that the traffic delay of SUMO, and IHCM 1997 have no similarities to the observation. Furthermore, from the linear regression result, only SUMO result has the highest value for determination coefficient (R2) compared to IHCM 1997 as shown in the West and South arms for SUMO result in the morning measurement. It means SUMO more representatives the observation compared to IHCM 1997. It is occurred because SUMO is developed in Europe and also the location for this research is in Sweden, Europe which has very different traffic condition from Indonesia.Keywords: Roundabout, traffic delay, SUMO, IHCM 1997.

SENSITIVITY ANALYSIS IN FLEXIBLE PAVEMENT PERFORMANCE USING MECHANISTIC EMPIRICAL METHOD (CASE STUDY: CIREBON–LOSARI ROAD SEGMENT, WEST JAVA) E. Samad
Journal of the Civil Engineering Forum Volume: XX/1 - September 2011
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Cirebon – Losari flexible pavement which is located on the North Coast of Java, Indonesia, is in the severe damage condition caused by overloading vehicles passing the road. The need for developing improved pavement design and analysis methods is very necessary. The increment of loads and quality of material properties can be evaluated through Mechanistic-Empirical (M-E) method. M-E software like KENLAYER has been developed to facilitate the transition from empirical to mechanistic design methods. From the KENLAYER analysis, it can be concluded that the effect of overloading to the pavement structure performance is difficult to minimize even though the first two layers have relatively high modulus of elasticity. The occurrence of 150%, 200%, and 250% overloading have a very significant effect in reducing 84%, 95%, and 98% of the pavement design life, respectively. For the purpose of increasing the pavement service life, it is more effective to manage the allowable load.

Performance Analysis of Foreign Loans in Directorate General of Highways Ministry of Public Works Yunik Eva Sarlina
Journal of the Civil Engineering Forum Vol. 2 No. 2 (May 2016)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Provision of road infrastructure does, efficiently and effectively, have an effect on economy increase in a region. The limited ability of the government in the provision of funding for the road infrastructure requires the handling on the organizers of the roads, it also needs efforts to look for funding resources outside the APBN as a resource of funds for foreign loans. This study aims to know the process of foreign loans, the characteristics of each foreign loan, and the loan implementation performance in Directorate General of Highways, Ministry of Public Works. The research was using the qualitative descriptive methods focusing on thorough depiction of form, function, and meaning of prohibition; data collection was done by collecting the entire loan process from the preparation phase to the implementation phase through interviewing and documentation literature. The document consists of the loan agreement document, documents monthly reports and annual reports, lender regulations, legal regulations of the Republic of Indonesia, photo documentation and archives. The result showed that the scoring of performance, multilateral loan is better than bilateral loan. This is evidenced by higher score for multilateral loan than bilateral loan. Particularly in terms of regulations, the multilateral loan having score 15, it was because the lender adjusts by existing regulations in Indonesia, while bilateral loan having score 13. Furthermore, from the aspect of financial benefits, bilateral loan have score of 41 and is more advantageous than the multilateral loan which score is 29.

ANALYSIS OF SEDIMENT MOVEMENT IN A RIVER DIVERSION SYSTEM Agus Safari
Journal of the Civil Engineering Forum VOLUME: XXII/3 - SEPTEMBER 2013
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Sediment-related disaster especially debris flow occurs frequently in various places in Indonesia. It has been well known in general that debris flow contents big size of materials which huge power to destroy the river and surrounding area. Comprehensive measures and rising awareness to prevent the toll of human lives against sediment disaster is considered necessary. Diversion system to proximate river aimed to lessen sediment load by considering its capacities and sediment prevention facilities becomes an alternative counter measure of sediment flood disaster. Information of river diversion capability and associated phenomena due to sediment gravity flow is a fundamental desire for establishing reasonable sediment control plans. Physical model compared to simple mathematical model are conducted to know river diversion capacity to convey sediment. The experiment used a channel made of masonry with 80 cm wide in average and 400 cm length, and 10 % gradient. The proposed sediment control facilities comprises two types, there are open type dam with 33 cm wide, 16cm high (at +1.245m elevation of crest) and four slits in main stream river and close type dam 41 cm wide, 15 cm high (at +1.255m elevation of spillway) for river diversion. The distance of these facilities is 110 cm. The result of this study is expected to be able to explain the sediment gravity flow behavior in the field. It shows that the performance of river diversion and open type dam control volume depend on quantity and mechanism of sediment flow from upstream, and also elevation of crest of the open type dam. The largest amount of sediment gravity flow entering diversion channel is about 7 % of sediment inflow for +1245 m open dam crest elevation and +1255 m river diversion spillway elevation.Keywords: Natural disaster, sediment, river diversion system.

DYNAMIC TIME HISTORY ANALYSIS OF BLAST RESISTANT DOOR USING BLAST LOAD MODELED AS IMPACT LOAD Y. A. Pranata; N. Madutujuh
Journal of the Civil Engineering Forum Volume: XXI/1 - January 2012
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

A blast resistant single door was designed to withstand a 0.91 bar blast pressure and 44 ms blast duration. The analysis was done using Dynamic Time History Analysis using Blast Load modeled as Impact Load for given duration. The material properties used have been modified to accommodate dynamic effects. The analysis was done using dynamic finite element method (fem) for time of the blast duration, and the maximum/minimum internal forces and displacement were taken from the time history output, in order to know the behavior under blast load and estimate the safety margin of the door. Results obtained from this research indicated that the maximum z-displacement is 1.709 mm, while in the term of serviceability, the permitted is 25 mm. The maximum reaction force is 73,960 N, while the maximum anchor capacity is 82,069 N. On blast condition, the maximum frame stress is 71.71 MPa, the maximum hinge shear stress is 45.28 MPa. While on rebound condition, the maximum frame stress is 172.11 MPa, the maximum hinge shear stress is 29.46 MPa. The maximum door edge rotation is 0.44 degree, which is not exceed the permitted boundary (1.2 degree). Keywords: Dynamic time history, blast resistant door, single door, finite element method.

Evaluation on Container Products in East Nilam Terminal, Tanjung Perak Port Haris Zonakis Timor
Journal of the Civil Engineering Forum Vol. 2 No. 1 (January 2016)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Development of a container terminal is needed due to a change in the region, cargo handling, ship technology, and changes in quantity demand. Performance indicators of container terminal container is needed to assess the streamlined of container terminals' operational process in serving the transportation of goods and development activities in the future. The analysis of performance indicator in container terminal will have an impact on improving the current services and future. Therefore, there should be a study to measure the performance indicator in ports or container terminals, especially in the Multipurpose Terminal East Nilam (TMNT) as an object of research. Performance of container terminal as a system with many variables influence can be analyzed with the forecasting method and related theory of applicable equations as well as the application of the model scenarios. Forecasting methods are used to determineTMNT for short-term conditions (2020), medium term (2030), and long-term (2040). The results of the data analysis for the research activities of the secondary data obtained from PT. IPC III branch of Tanjung Perak in 2013, obtained the performance TMNT including BOR (performance dock) 51% and YOR (yard performance)31%. The analysis shows that in 2040, needs a dock length of about TMNT 1,254 meters by nine moorings from existing conditions along the 320 meters with two moorings. The length of East Nilam pier that is not in the revitalization is 540 meters. The development of infrastructure is only possible along the pier 860 meters with six moorings. While the CY area needs about 5 acres from existing condition, which is around 3.8 acres. BOR value and YOR projection reach up to 161% and 145%. This evidence means that the TMNT with existing conditions cannot be used again in 2040. The application of C scenario model by adding 860 meters of dock length with six moorings, will add capacity of the dock up to600,000 TEUs, and elimination of not operating time is capable to lowering the value of the BOR become 41% and YOR become 69%.

The Use of Rainfall Variability in Flood Countermeasure Planning Iis Catur Wulan Dhari
Journal of the Civil Engineering Forum Vol. 3 No. 3 (September 2017)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

One of the impacts of climate change is the unpredictable shifting of seasons and rainfall patterns which caused flooding. Rejoso Watershed in Pasuruan Regency is one of the watersheds that suffer from flooding almost every year due to watershed degradation characterized by land conversion and changes in the hydrological behavior including the extreme rainfall pattern. This research was aimed to investigate the effect of rainfall variability on runoff and floodwater level profile along the river channel to provide technical and non-technical recommendation for handling flood problems. The hydrological analysis was performed using HEC-HMS version 4.0 software and the hydraulic analysis was conducted using HEC-RAS version 5.0.3 software. Several variations of extreme rainfall pattern were applied in the rainfall-runoff calculation to determine the representative flood discharges that will be used as input to the hydraulic simulation for evaluating the characteristics of flood water level. The result of the research shows that rainfall with the same depth yet varies in duration and starting time generate different flood hydrographs. Rejoso River could not store flood discharge with return period of 2 years with peak discharge of 201.46 m3/s that causing overflow along the stream. The recommendation to handle flood problems is by normalization, which could reduce the overtopping at several river reaches of 4,927 m, while the combination of normalization and embankment could reduce 7,843 m from the existing river length of 12,396 m.

DIFABLE PERCEPTION FOR ACCESSIBILITY AND INFORMATION OF PUBLIC TRANSPORT IN JAKARTA Mochdiana Hernawan
Journal of the Civil Engineering Forum Volume: XXI/3 - September 2012
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Every human being has equal right for accessing to the transportation. Difable persons that have different ability also have the same right. The provision of the accessibility and information facility in public transport is not fully meet difable need and therefore difable persons have difficulties in accessibility and information while using public transports. This research will investigate the difable perceptions about accessibility and traveler information for the public transport in Jakarta. Questionnaire method will be used for this purpose and then analyzed by Importance Performance Analysis. The improvement for the transport infrastructure and information system will be elaborated. The findings of the research could be used as input for the local authority while planning or re-construction public transport infrastructure and information system so that difable persons become more accessible and convenience. The study results show that the average value of the perceived performance for the accessibility is 2.78 from 5 scales. This means the performance of the accessibility in overall is fairly. For the information facility, the average performance is 3.11 that meaning the performance in overall is good. The respondents required the provision of waiting room for difable persons as a priority. The information about the departure of the vehicle should been improved as priority to be increased. Furthermore, it is obtained that the Customer Satisfaction Index (CSI) value for accessibility is 56%. This indicates the entire respondents satisfied sufficiently with the accessibility facility. Also, 62% of the CSI value shows that the respondents satisfied sufficiently with the provided information.

Rainfall Characteristic on the Slopes of Mount Merapi Region (Empirical Formula, Duration, Distribution, And Critical Line Woro River) Pudak Juni Laksana
Journal of the Civil Engineering Forum Vol. 1 No. 2 (May 2015)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Debris flow on the slopes of Mount Merapi area became a serious natural disasters because it has great destructive force and velocity. Rainfall with a certain intensity and duration is one component triggering debris flow. Rainfall has variability of the temporal and spatial characteristics influenced by various factors, such as topography and climate. Dharma (2012) suggested to define the characteristics of the intensity of rainfall using rainfall data with a shorter duration with statistical tests to establish the best empirical IDF formula. This research was using of 30 minutes rainfall data for short duration (<3 hours) and a spreadsheet software representing duration and distribution of the rainfall. The most appropriate rainfall intensity formula was done by the empirical IDF formula, i.e. Sherman, Kimijima, Hasper and Mononobe. Rainfall intensity analysis applied Frequency Analysis Software (based on Microsoft Excel). Debris flow occurrence was analyzed using MLIT for method A to establish standard rainfall index. Sherman formula performed the best fit to the IDF characteristics of rainfall in the region of the slopes of Mount Merapi. Rainfall distribution pattern showed high intensity rainfall in the first hour and then decreased in the next hour which means distribution for the duration of 3 hours, 12%, 28%, 25%, 16%, 12%, and 7%, respectively with an interval of 30 minutes. Based on critical line, 5 mm of standard rainfall index was gained in the case of warning (R1) and 28 mm in the case of evacuation (R2).

Shear Performance of Fiber-Reinforced Cementitious Composites Beam-Column Joint Using Various Fibers Faizal Hanif; Toshiyuki Kanakubo
Journal of the Civil Engineering Forum Vol. 3 No. 2 (May 2017)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Increasing demands of reinforcement in the joint panel are now requiring more effective system to reduce the complicated fabrication by widely used precast system. The joint panel is responsible to keep the load transfer through beam and column as a crucial part in a structural frame that ensures the main feature of the whole structure during earthquake. Since precast system might reduce the joint panel monolithic integrity and stiffness, an innovation by adding fiber into the grouting system will give a breakthrough. The loading test of precast concrete beam-column joints using FRCC (Fiber-Reinforced Cementitious Composites) in joint panel was conducted to evaluate the influences of fiber towards shear performance. The experimental factor is fiber types with same volume fraction in mortar matrix of joint panel. Two specimens with Aramid-fiber and PP-fiber by two percent of volume fraction are designed to fail by shear failure in joint panel by reversed cyclic testing method. The comparison amongst those experiment results by various parameters for the shear performance of FRCC beam-column joints using various fibers are discussed. Preceding specimens was using no fiber, PVA fiber, and steel fiber has been carried out. Through the current experimental results and the comparison with previous experiment results, it can be recognized that by using fibers in joint panel was observed qualitatively could prevent crack widening with equitable and smaller crack width, improved the shear capacity by widening the hysteretic area, increased maximum load in positive loading and negative loading, and decreased the deformation rate. Elastic modulus properties of fiber are observed to give the most impact towards shear performance.

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