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INDONESIA
Journal of the Civil Engineering Forum
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.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "VOLUME: XXII/2 - MAY 2013" : 6 Documents clear
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

Abstract

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.
Valuing Manggarai Station – Soekarno-Hatta International Airport Rail Link Using Stated Preference Approach Wahyu Tamtomo Adi
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.18912

Abstract

This study attempts to identify the characteristics and preference of the SHIA airport travelers, estimate the subjective value of in-vehicle time and waiting time by providing choice experiments regarding the available modes in combination with the Airport Rail Link (ARL) service as hypothetical situation, analyze how the values vary according to the socio-demographics of respondents and forecasting the mode sharing and the elasticity based on several scenarios. Five hundred respondents as potential demand for the airport access mode from both the online and on-field survey in Jakarta value reliability as the most important factors followed by comfort, journey time, fares and safety, while the most reliable journey according to the respondents is by train.After various attempts to best analyze the data, statistically significant result is obtained from MNL and Nested models. The values of IVT vary between 632 Rupiah/Minute and 871 Rupiah/Minutes, the values of waiting time vary between 901 Rupiah/Minute and 1,504 Rupiah/Minute. The results of unobserved parameters from the alternative modes are satisfactory negative for bus and positive for ARL alternative.The segmented models results vary that the value of male is higher than female, the value of high income is higher than low income, the values of taxi user is higher than car user, the value of business traveler is higher than leisure and commuter traveler, the value of self-finance journey is lower than the journey paid by the company. With the standard level of service, the probability result of mode sharing shows that the majority of respondents will use the train service (40.99%), followed by the other modes: bus (30.90%), car (16.52%), and taxi (11.59%).Keywords: Jakarta, SHIA airport, access mode, value of in-vehicle time, value of waiting time, model segmentation, mode sharing.
Analysis of Hydraulic Flood Control Structure at Putat Boro River Ruhban Ruzziyatno
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.18908

Abstract

Putat Boro River is one of the main drainage systems of Surakarta city which drains into Bengawan Solo river. The primary problem when flood occur is the higher water level of Bengawan Solo than Boro River and then backwater occur and inundates Putat Boro River. The objective of the study is to obtain operational method of Putat Boro River floodgate to control both inflows and outflows not only during flood but also normal condition. It also aims to know the Putat Boro rivers floodgate operational function to reduce inundation. Putat Boro river water level variation and Bengawan Solo river water level variation were used for simulation of Boro river floodgate routing. The simulation used 10-year inflows, 50-year inflows, and 100-year inflows return period and Boro water level variation are +82.50 m, +83.00 m and +84.00 m. The results of the study show that the effective opening of floodgate are 0.35 m - 0.55 m for +82.05 m of Bengawan Solo water level, 0.50 m – 0.65 m for +82.55 m of Bengawan Solo water level and 0.70 m – 0.85 m for +83.48 m of Bengawan Solo water level, for reducing water level of Boro river flooding. Keywords: Flood, drainage systems, floodgate and flow routing.
Affordability Assessment to Implement Light Rail Transit (LRT) for Greater Yogyakarta Anjang Nugroho; Imam Muthohar
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.18913

Abstract

The high population density and the increasing visitors in Yogyakarta aggravate the traffic congestion problem. BRT (Bus Rapid Transit) services, Trans Jogja has not managed to solve this problem yet. Introducing Light Rail Transit (LRT) has been considered as one of the solutions to restrain the congestion in Greater Yogyakarta. As the first indication that the LRT can be built in Greater Yogyakarta, the transportation affordability index was used to understand whether the LRT tariff was affordable. That tariff was calculated based on government policy in determining railway tariff. The forecasted potential passengers and LRT route have been analyzed as the previous steps to get LRT tariff. Potential passenger was forecasted from gravity mode, and the proposed LRT route was chosen using Multi Criteria Decision Analysis (MCDA). The existing transportation affordability index was calculated for comparison analysis using the percentage of the expenditures for transportation made by monthly income of each household. The result showed that the LRT for Greater Yogyakarta was the most affordable transport mode compared to the Trans Jogja Bus and motorcycle. The affordability index of Tram Jogja for people having average income was 10.66% while another people with bottom quartile income was 13.56%.Keywords: Greater Yogyakarta, LRT, affordability.
Study of Lusi River Flood Discharge in Central Java Province Pontjo Witjaksono Arief Rachmanto
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.18909

Abstract

Lusi is one of the big rivers of Serang Lusi Juana (Seluna) River System that contributes to flood event on the downstream part of the system. To cope with the flood problem occurred in Seluna River System. Kedungombo Dam has been constructed on the upstream part of Serang River. However, flood flow from Lusi River, which covers 2.100 km2 of catchment area, cannot be controlled.By calculating the Lusi River design flood discharge, the flood discharge contribution of Lusi River to the Seluna River System can be predicted. Design flood hydrograph of Lusi River is determined using the synthetic unit hydrograph approach due to inadequate data. The synthetic unit hydrograph of Gama I is used in this study. To distribute design daily rainfall into hourly rainfall units to be applied in flood hydrograph calculation, hypothetic rainfall distribution is used by employing the Alternating Block Method (ABM) and Tadashi Tanimoto methods for several floods returning period.Design flood discharge applied for the calculation is the results of the ABM Rainfall distribution based on the two-daily rainfall data. The results of design flood discharge under this method show 748m3/s for return period of 2 years, 1036m3/s for return period of 50 years, 1097 m3/s for return period of 100 years and 1158 m3/s for return period of 200 years. 96% of Lusi River design flood gives contribution to the Seluna River System which is approximately 1200m3/s gained from Q200 design flood discharge in Klambu barrageKey Words: Flood discharge, synthetic unit hydrograph, hypothetical rainfall distribution, design discharge.
Flood Disaster Mitigation as Revealed by Cawang-Manggarai River Improvement of Ciliwung River Airlangga Mardjono
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.18910

Abstract

Ciliwung River that flows from Bogor highland is one of the rivers traversing several lowlands in Jakarta. Having the lowland topographic condition, the area along Ciliwung River is potentially inundated. Flood disaster that occurred in early 2002 in Jakarta caused a wide inundation area (with approximately 25% area of Jakarta Province being flooded), serious damages in properties, and also loss of life.This paper presents hydraulic routing analysis over Ciliwung River within the Cawang - Manggarai reach through several scenarios and further simulation using of HEC RAS 3.1 version Software. From the several scenarios and simulations, a conclusion among scenarios which results the lowest water surface elevation was withdrawn.The final result of this simulation shows that Scenario 3 gives the lowest water surface elevation profile. Scenario 3 is subjected to river normalization, revetment works along the river, and also flood control structure improvement through the additional sluice gate on Manggarai Barrage. This scenario results 167 cm, 163 cm, 172 cm, 179 cm, 167 cm and 171 cm or 17,60%, 17,16%, 18,09%, 18,76%, 17,38% and 17,72% of maximum water level reduction respectively over cross section number S 20 to S 25, for several simulations with 100 year of design discharge.Keywords: Simulation, river improvement, flood water surface elevation.

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