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Ria Asih Aryani Soemitro
Civil Engineering Departement, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia.
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Library & Information Science Mathematics Transportation

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Effect of Embankment Construction Pace on Slope Stability Wih Varied Heights on Organic Soft Soil in the Sicincin-Padang Toll Road Sta 10+250-10+400 Alfian Wildan Mulifandi; Trihanyndio Rendy Satrya; Ria Asih Aryani Soemitro; Sri Hastuti Hardiningsih
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 3 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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Abstract

On the Sicincin-Padang toll road section there are several geotechnical problems, one of which is that at the Sta 10+250-10+400 is dominated by an organic soil. In the implementation of a 4.0 meter high embankment there are cracks appeared on the left side of embankment toe. Based on the evaluation results of monitoring geotechnical instruments in the field, the cracks that occur can be caused by the bearing capacity failure or due to the implementation stages of embankment construction is too fast. The method used in this research is to use finite element method by numerical simulation using Plaxis 2D program to determine the stability of embankment slope stability acording to the stages of implementation in the field and by modeling a staged construction, where the speed of embankment construction depends on the thickness of the embankment layer used, which is 15 cm to 25 cm until the design height is reached and the consolidation time is 1 day to 14 days for each additional 1 meter of embankment height. The porpose of this study is to determine the stages of implementation that are safe and compliant with the design criteria requrements. From the modeling results the existing embankment construction in the field has a safety factor value of SF=1.156. In this research, variations in the construction stages that have been modeled were obtained that are safe and meet the design criteria at the location under review are; at Sta 10+250 with using 25 cm thickness fill layer and 14 days consolidation time, Sta 10+350 with a 15 cm thickness fill layer and 7 days consolidation time, Sta 10+400 with a 25 cm thickness fill layer and 5 days consolidation time. There are differences in the effective time at each of the locations reviewed, this is due to differences in geometric embankment conditions at each location. From the results of modeling analysis, it also found that by reducing the thickness of the embankment fill layer and increasing the consolidation time, the value of the safety number will increase, the amount of settlement will increase, the amount of lateral movement will decrease and the excess pore water pressure will decrease.
Analysis of Embankment Slope Failure And Effectiveness Of Reinforcement With Full Displacement Column on Soft Soil (Case Study : Construction Of Padang Sicincin Toll Road Section STA 7+400 – 7+550) Firman Arifanto; Trihanyndio Rendy Satrya; Ria Asih Aryani Soemitro; Sri Hastuti Hardiningsih
Journal of Infrastructure & Facility Asset Management Vol 6 (2024): Special Issue 3 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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Abstract

The package that is currently under construction on the Trans Sumatra toll road network section Padang - Pekanbaru is the Padang - Lubuk Alung - Sicincin section which is targeted for completion in July 2024. One of the obstacles in the work process is that there is an embankment landslide at STA 7 + 450 which is indicated due to a decrease in the subgrade. This resulted in the construction process not being able to continue so there was a delay in the progress of construction implementation. Therefore, a study is needed that focuses on analyzing the causes of landslides and follow-up recommendations to overcome problems in the STA 7 + 450 embankment work on the Padang - Pekanbaru Toll Road Construction project section Padang - Lubuk Alung - Sicincin. The method used in this research is finite element modeling analysis using the help of the PLAXIS 2D program by looking at the Safety Factor value of the embankment slope under initial conditions and back analysis. The landslide modeling results with the finite element method are also compared with the landslide lines that occur in the field. From the back analysis, new parameters are obtained when a landslide occurs as input in the reinforcement analysis to be used. For follow-up improvement, full displacement column reinforcement is proposed where the effect of FDC column spacing, thickness, and load transfer platform material combination on slope stability, settlement, and changes in soil mechanical parameters will be analyzed. It was found that the embankment structure before the collapse had a critical SF value of SF = 1.010. The cause of the landslide was indicated to be due to the additional load from the project vehicle traffic. Parameter changes were obtained in the form of c' = 8.17 kN/m2 and Ø' =19.68o, cc = 0.8175, and cs =0.1204 in the organic soft soil which was indicated to be the cause of the landslide. From the modeling results to find the effectiveness of reinforcement with FDC, the optimum parameters were obtained concerning a distance of 3 times the column diameter, and a Load Transfer Platform thickness of 1.8 meters with geogrid reinforcement.
Analysis of the impact of soil excavation stages on slope stability case study of road and bridge construction projects in bts. Singaraja-Mengwitani at point 7E, Bali Guilden Laelatu Yudha; Ria Asih Aryani Soemitro; Trihanyndio Rendy Satrya; Noor Fachrie
Journal of Infrastructure & Facility Asset Management Vol 7 (2025): Special Issue 1 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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The Singaraja -Pengayaman BTS Road Section is a national road located in the central corridor of Bali Island and includes several critical locations in terms of road geometry. Geometric adjustments are being addressed through the BTS Singaraja -Mengwitani Road and Bridge Construction Project Section 7E, involving excavation work up to 64 meters high at STA. 0+119.87. This study aims to analyze slope stability based on existing conditions, evaluate the impact of excavation method variations on slope stability, and determine effectiveexcavation methods both with and without the influence of water on slope stabilityusing Plaxis 2D program. The research results indicate that the safety factor (SF) value of the existing slope prior to excavation was 1.337, whereas it decreased to 1.034 after the final excavation stage. According to the SNI 8460:2017 standard (SF < 1.5), the slope condition in the final excavation stage is deemed unsafe. Excavations with depth variations of 1 meter, 2 meters, and 3 meters, as well as at slope angles of 45 ̊, 55 ̊, and 65 ̊, showed similar impacts on slope stability. A significant decrease in the safety factor occurred from the 7th excavation bench downward, where the safety factor fell below 1.3. At the end of the excavation process, the deepest sliding surface reached a depth of 20.11 meters. At an elevation of +36.5 meters, where the groundwater level reaches 56.40% of the total slope height, which marks the boundary between soil and rock layers, the safety factor drops to 1.040. Further increases in groundwater levels above +36.5 meters could render the slope unstable and potentially lead to collapse.
Slope Stability Analysis Under Dry-Wetting Cycle Conditions (Case Study: Landslide Countermeasure of Batas Pidie/Aceh Besar - Batas Kota Sigli) Zulfadhli Zulfadhli; Trihanyndio Rendy Satrya; Ria Asih Aryani Soemitro; Fikri Afzal
Journal of Infrastructure & Facility Asset Management Vol 7 (2025): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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Abstract

A landslide occurred on National Road Section Bts. Pidie/Aceh Besar - Bts. Kota Sigli Sta. 0+500 during the peak of the rainy season has resulted in the disruption of traffic lanes. Soil samples were obtained from the landslide site for inclusion in the testing process. The laboratory tests encompass a range of physical and mechanical parameters and also dry-wetting procedures. The result shows that the topsoil layer consists of sandy silty clay with medium plasticity. Then, a dry-wetting cycle was conducted to simulate the dry and rainy season by introducing and reducing water content from the initial condition (wi) to saturated (wsat) and to airdried (wairdry) with 25%, 50%, 75%, and 100% interval. The results showed a decrease in unconfined compressive strength (qu) by 22.70% and negative pore water pressure (-Uw) by 53.14%. Slope stability analysis found that the slope was stable after the landslide with an FS value of 1.380 and increased to 1.410 when there was the addition of slab on pile road construction. The addition of rainfall variations for 3 and 5 hours is insignificant to the stability of the slope due to the groundwater table being too deep to affect pore water pressure.
Behaviour Study of Abutment Foundation Pile on Lightweight Embankment Oprit (Case Study: Kali Otek Bridge – Lamongan North Ring Road Construction Package Section 2) Nila Wahyu Pertiwi; Ria Asih Aryani Soemitro; Trihanyndio Rendy Satrya; Sifa’ Udukha
Journal of Infrastructure & Facility Asset Management Vol 7 (2025): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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Abstract

The Kali Otek Bridge is in the Lamongan North Ring Road Development Package Section 2 with a bridge span length of 40.8m. The boring test results show that the subgrade is included in the very soft soil classification to a depth of >15 meters. The existing condition is a pond area that can be inundated with water reaching a height of 1 meter, thus affecting the occurrence of land subsidence and stability of the bridge abutment foundation pillars. The existence of embankment construction can also cause subsidence on the subgrade.In this research, soil settlement and stability analysis of lightweight foam mortar embankment has been carried out by varying the percentage of the height of the existing embankment and the foam mortar. In addition, it also analyzes the effect of using lightweight embankment, both as a whole and its variations on the stability of bridge abutment foundation piles, both with and without Prefabricated Vertical Drain (PVD).The analysis showed that the use of foam mortar reduced the subgrade settlement by 61.2% with a longer time of 18.5%. The smallest settlement and lateral deflection was at 100% foam mortar backfill variation with consolidation time of 190 days. The greater the percentage of foam mortar height, the smaller the settlement as the factor of safety increases. Thus, the use of foam mortar can be an alternative embankment for bridge oprites on soft soil.
Study of The Behavior of Abutment Piled Foundation due to Nearby Staged Embankment (Case Study: Kali Kandang Bridge on The North Ring Road of Lamongan) Azkiya Nabila; Trihanyndio Rendy Satrya; Ria Asih Aryani Soemitro; Sifa Udukha
Journal of Infrastructure & Facility Asset Management Vol 7 (2025): Special Issue 2 : Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

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Abstract

Kali Kandang Bridge is built on soft soil with low bearing capacity that uses a combination of Preloading, Prefabricated Vertical Drains (PVD), and Prefabricated Horizontal Drains (PHD) that require a long time to achieve a 90% consolidation degree. During the consolidation process, there is no other work that can be done. To increase time efficiency, shorten the PVD spacing or manage two or more works, such as piling bridge abutment, staged embankment, and consolidation process simultaneously can be done. But, embankment above soft soil near piled foundation can give additional forces to the pile so the study of behavior of abutment piled foundation due to nearby staged embankment and degree of consolidation should be done. This study analyzes the effects to piles if piling is carried out after consolidation is complete. Then, it analyzes the effects of variation of the PVD spacing of 0.75 m and 0.50 m, variations in embankment stages of 0.75 m/day, 1.00 m/day, and 1.25 m/day and variations in piling at various degrees of consolidation ranging from 10% to 90%. From the analysis, it was found that the variation of PVD installation spacing of 0.75 m and 0.5 m and the variation of embankment phasing of 0.75 m/day, 1.00 m/day, and 1.25 m/day did not provide a significant effect on either the soil settlement and consolidation time or the lateral deflection, pile settlement and forces in piles. On the other hand, pile driving at different consolidation degree variations showed a significant effect. The most critical condition where the foundation pile received the largest additional forces was on the foundation pile driven at a consolidation degree of 10%.
Preliminary Recognition of River Infrastructure Mahendra Andiek Maulana; Hitapriya Suprayitno; Ria Asih Aryani Soemitro
Journal of Infrastructure & Facility Asset Management Vol 1 No 1 (2019): Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v1i1.5202

Abstract

River infrastructures can be defined as facilities and structures that support all activities related to river. Many infrastructures that exist along river stream but few of them are listed and recognized as an important part in the river system. The condition of assets that support the river function should be considered since it determines the sustainability of water supply system for many areas. Starting from upstream, there were dam and reservoir that constructed to reserve the water. Moreover, the water can be distributed to the downstream area for many requirements, such as irrigation system, hydro power, industrial process, etc. In the other hand, dam and reservoir also functioned as flood control that protect the downstream area from flood and inundation. In alluvial river, there were erosions that occurs as river flow velocity could transported soft soil numerously. Hence, the river bank protections were built in order to protect the nearby river infrastructures. Therefore, the infrastructures recognition as preliminary assessment to the river asset management need to be done in order to maintain the river system.
Gradation Analysis of Reclaimed Asphalt Pavement from National Road as Asphalt Concrete Layer Ari Widayanti; Ria Asih Aryani Soemitro; Januarti Jaya Ekaputri; Hitapriya Suprayitno
Journal of Infrastructure & Facility Asset Management Vol 1 No 1 (2019): Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v1i1.5205

Abstract

One of the assets of land transportation infrastructure that obtained attention now is the road. Road construction can support the developing economy, industry, trade, people and good mobility, regional development. Management of road infrastructure assets require to prioritize natural resources managements efficiently as possible. Reclaimed Asphalt Pavement (RAP) is the result of dredging material with aggregate gradation condition that are not in accordance with the needs of the gradation envelope. Utilization of RAP as a pavement layer is an effort to converse the use of natural materials. The efficiency aspect of RAP aggregate use needs to be done by determining the road pavement layer that is most appropriate to the condition of the RAP aggregate so that the addition of new aggregates is kept to a minimum. The aim of this study was to obtain a suitable pavement layer determination based on the aggregate gradation of RAP and standard specifications. The method used literature study from previous research and RAP aggregate sieve analysis from national roads in East Java Province. The results showed that the utilization of RAP from national roads based on the RAP aggregate conformance value were AC-WC layer of 82.292%, AC-BC layer of 68.75% and AC-Base layer of 41.667%. Based on the gradation analysis, it is found that the RAP aggregate is best suited for the AC-WC layer, because it requires optimal RAP aggregate and the most efficient of additional aggregate.
Searching the Appropriate Minimum Sample Size Calculation Method for Commuter Train Passenger Travel Behavior Survey Anita Susanti; Ria Asih Aryani Soemitro; Hitapriya Suprayitno; Vita Ratnasari
Journal of Infrastructure & Facility Asset Management Vol 1 No 1 (2019): Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v1i1.5232

Abstract

Commuter Train is one of the facilities that must be managed properly, economically and efficiently by the principles of Facility Asset Management. The availability of infrastructure and vehicles for this facility is adjusted based on passenger demand. This requires sufficient knowledge on the travel behavior characteristics, i.e., different characteristics composition proportion. Travel behavior survey requires the appropriate formula or method to calculate the minimum sample size, for this case are proportions of pq, pqr, pqrs etc. Therefore, a search for Minimum Sample Size Calculation Method for the Travel Behaviour Survey is needed. A literature study was employed for this search. This is important because the calculation method for the minimum sample size for proportions pq exists, but for the proportion of pqr, pqrs, etc do not yet exist. The results of the study indicates that the SR Method is the most appropriate method for calculating the minimum number of samples for the case of the proportion of pqr, pqrs, pqrst, etc. The SR Method is developed based on Goodnees of Fit method combined with the Maximum Acceptable Error principle. The combination of the two is named the MAECCL (Maximum Acceptable Error on a Certain Confidence Level) principle.
Reflection on Data Error Identification Methods for Field Survey Data on Commuter Train Passenger Travel Behavior Hitapriya Suprayitno; Ria Asih Aryani Soemitro
Journal of Infrastructure & Facility Asset Management Vol 1 No 1 (2019): Journal of Infrastructure & Facility Asset Management
Publisher : Departemen Teknik Sipil, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v1i1.5203

Abstract

Good understanding of Demand Behavior is important for Infrastructure and Facility Planning. Therefore, Field Survey for Travel Behavior Characterisitcs on Commuter Train Passenger is very important. The data collected and processed must be correct data. Meanwhile errors could easily happen in data collection and tabulation. How is the method to identify the data error. Experiment indicates several following methods : using spread-sheet software is strongly suggested for easiness to develop the whole process, establish numerical data tabulation for data error identification easiness, etablish code for data back-tracked, develop field survey data table, develop data error possibilities tabel, develop a error logical tests, develop spreadsheet logical test function, do error identification calculation.
Co-Authors Alfian Wildan Mulifandi Alien Maulida Nurtaqwim Anita Susanti Ari Widayanti Azkiya Nabila Dinul Hadi Dwa Desa Warnana Dwa Desa Warnana Fikri Afzal Firman Arifanto Guilden Laelatu Yudha Hitapriya Suprayitno Hitapriya Suprayitno Januarti Jaya Ekaputri Mahendra Andiek Maulana Nila Wahyu Pertiwi Noor Fachrie Noor Fachrie R. Soetanto Rahmadsyah Rangkuti Sifa Udukha Sifa’ Udukha Soedarmawan Soewardi Sri Hastuti Hardiningsih Sri Hastuti Hardiningsih Trihanyndio Rendy Satrya Trihanyndio Rendy Satrya Trihanyndio Rendy Satrya Vita Ratnasari Yanuar Dwi Putra Yervi Hesna Zulfadhli Zulfadhli