scholarly journals Stability Analysis of Aifa Bridge Abutment in Fafurwar District, Bintuni Bay Regency, West Papua Province

2019 ◽  
Vol 2 (2) ◽  
pp. 162-171
Author(s):  
Muhammad Yunus ◽  
Zharin F Syahdinar
Keyword(s):  
Stability Analysis ◽  
Service Life ◽  
Safety Factor ◽  
Public Works ◽  
Bridge Structure ◽  
Construction Work ◽  
The Road ◽  
Bridge Abutment ◽  
West Papua ◽  
The Stability

In the construction of public works infrastructure, especially road infrastructure works, bridge construction work plays a very important role besides the construction of the road itself. One of the things that deserves the attention of the planners in designing a bridge structure is the design of the substructure, this is because the substructure determines the quality and service life of a bridge. In addition, at present many cases of bridge structure failures are caused by failures of the substructure in holding the load acting on the bridge. The aim of this study was to determine the stability of the abutment to sliding failure and the stability of the abutment to overturning failure on the construction of the Aifa bridge in the Bintuni Bay Regency. From the results of the calculation of the stability of the abutments to sliding failure, when the abutments are in normal conditions was obtained safety factor (SF) values 1,907, in condition of the upper structure load is not working was obtained safety factor (SF) values 1,045 and during earthquake conditions was obtained safety factor (SF) values 1,419. While the results of the calculation of the stability of the abutments to overturning failure, when the abutments are in normal conditions was obtained safety factor (SF) values 4,640, in condition of the the upper structure load is not working was obtained safety factor (SF) values 1,658 and during earthquake conditions was obtained safety factor (SF) values 3,159. Because obtained safety factor (SF) values greater than 1, so that the stability of the abutment is safe to sliding failure and overturning failure.

scholarly journals ANALISIS STABILITAS LERENG MENGGUNAKAN SOFTWARE PLAXIS 8.6 DENGAN DINDING PENAHAN TANAH (RETAINING WALL) (STUDI KASUS RUAS JALAN NASIONAL BANDA ACEH-MEDAN STA 83+135 GUNUNG SEULAWAH)

2018 ◽  
Vol 1 (3) ◽  
pp. 76-82
Author(s):  
Wihardi Wihardi ◽  
Munirwansyah Munirwansyah ◽  
Sofyan M. Saleh
Keyword(s):  
Slope Stability ◽  
Safety Factor ◽  
Retaining Wall ◽  
Road Construction ◽  
Local Area ◽  
Traffic Load ◽  
Road Infrastructure ◽  
The Road ◽  
The Stability ◽  
Banda Aceh

Road infrastructure is very important and is a key enabler for the economy. If the road infrastructure was damaged or had various problems such as sliding, the movement of goods and passengers will be hampered and delayed to the acceleration of development in the local area. The landslide and movement of groundwater is a problem that often occurs repeatedly on some streets. Therefore, it is necessary to study the strengthening of the slopes at the bottom of the road construction with retaining wall. This study aims to analyze slope stability by getting numbers Safety Factor (FK). The analysis is used to analyze the stability of slopesusing the finite element method with the help of software Plaids, The scope of this review includes the calculation of slope stability at the national road from Banda Aceh - Medan Sta. 83 + 185 Mount Selawah. The results of slope stability analysis on the existing condition by using Plaxis software at the point of a review is not safe (FK 1.25). Thus, it is done handling the retaining wall, installation of anchors. Based on the analysis of slope stability after being given the strengthening of the slopes with a retaining wall and the installation of anchors using Plaxis software under the influence of traffic load in an unsafe condition (FK 1.25). Then additional handling is done by changing the angle of the slope so that the value of the safety factor (FK) 1.25.

scholarly journals DESIGN OF RETAINING WALL USING ALTERNATIVE GABION AND RETAINING WALLS OF CANTILEVER TYPE ON SLOPE OPEN SPACE GREEN JL. KINIBALU BANJARBARU

CERUCUK ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 69
Author(s):  
Adelina Melati Sukma
Keyword(s):  
Stability Analysis ◽  
Safety Factor ◽  
Carrying Capacity ◽  
Rainy Season ◽  
Open Space ◽  
Retaining Wall ◽  
Retaining Walls ◽  
Stability Calculation ◽  
Overall Stability ◽  
The Stability

On the construction of green open space Jl. Kinibalu Banjarbaru There is a 6 meters tall slope beneath which the river is lined up during the rainy season and makes the slope exposed by water plus the absence of load or traffic on it make the pore figures on the land is large. Therefore, for protection reason, there is a soil alignment in the construction of soil retaining walls. The planned ground retaining wall type is cantilever and gabion. The stability analysis of the ground retaining walls is done manually and with the help of the Geoslope/W 2018 software. The value of the stability of the style against the bolsters, sliding, and carrying capacity of the soil using manual calculations for cantilever type and Netlon qualifies SNI 8460:2017. And for the overall stability calculation using Geoslope/W 2018 software obtained safety factor (SF) > 1.5. From the analysis, the design of planning can be used because it is safe against the dangers of avalanche.

scholarly journals BEHAVIOR OF PINDOS LIMESTONE DURING HIGH SLOPE EXCAVATION. AN APPROACH TO INTERPRETE AND SIMULATE THE BEHAVIOR OF THE FORMATION USING SLOPE STABILTY ANALYSIS METHODS

2004 ◽  
Vol 36 (4) ◽  
pp. 1853
Author(s):  
A. Σφέικος ◽  
Θ. Στιμάρατζης ◽  
A. Κίλιας ◽  
Β. Χρηστάρας
Keyword(s):  
Safety Factor ◽  
Dynamic Equilibrium ◽  
Stable State ◽  
Soil Mechanic ◽  
River Diversion ◽  
The Road ◽  
Rock Formations ◽  
Geotechnical Characteristics ◽  
Slope Excavation ◽  
The Stability

The Acheloos river diversion project includes also works which improve the condition of the infrastructure network in the area. One of them was the improvement of a section at the Mouzaki - Arta national road. The road is developed through geological formations of the Pindos Zone. In the Argithea area, Karditsa County, it cuts through Cretaceous limestone bearing Calpionella. This formation develops high and steep slopes, over 50 m high. It consists of thin to medium bedded limestone, showing locally chert intercalations, and gradational transition to siliceous limestone. Thin silt or clay layers separate bedding. The formations is strongly folded and intensively jointed. The initial design proposed the construction of a slope with H:V relationship of 1:4 and benches every 20 m. The designed geometry was during and soon after excavation destroyed, due to sliding of rock particles. A new geometry was developed possessing a more stable state of dynamic equilibrium. Our task is to investigate and simulate the behavior of this formation. Based on data from both laboratory analysis and literature we ascribed the limestone formation values for its geotechnical properties. Using these values we estimate the values for the Safety Factor for the geometrical features of the slope. We control the stability of the slope using both rock mechanics and soil mechanic methods. The results point that rock formations, like the Cretaceous limestone which exhibit variation in their composition, and high contrast between the geotechnical characteristics values of the composing elements, may be considered as a material with soil properties. The Safety Factor calculation using these assumptions for the above mentioned slope, resulted a geometry close to the one developed. Therefore we conclude that such rock material and formations may successfully be simulated as materials with soil geotechnical behavior.

scholarly journals Pengaruh Biopolimer Pada Stabilitas Lereng Swelling soil

2021 ◽  
Vol 5 (3) ◽  
pp. 307-316
Author(s):  
Dewi Amalia ◽  
Bagus Guritno ◽  
Geni Firuliadhim
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Soil Type ◽  
Analysis Program ◽  
Swelling Soil ◽  
The Difference ◽  
The Stability ◽  
Cracked Soil

Many studies have begun to develop the concept of cracked soil. The results of research related to cracked soil are able to answer the irregularities that occur, such as the difference in the results of the stability analysis which is considered safe with the conventional bishop method, while the conditions in the field are landslides. Swelling soil is soil that is susceptible to changes in water content. This type of soil is very prone to cracking. To build infrastructure on the swelling soil type, an improvement must be made, one of which is by mixing the swelling soil with biopolymer. The results of this biopolymer mixing are then modeled in the New Slope Stability Analysis Program (NSSAP) 1.0 which refers to the concept of cracked soil. From the analysis, it was found that the slope safety factor before improvement with biopolymer was 0.305 and the safety factor after improvement with biopolymer was 2.006. From the results of this study, it can be seen that the role of biopolymers in stabilizing swelling soil is quite large, which is around 558%.

scholarly journals PEMANFAATAN SILINDER LIMBAH TES BETON SEBAGAI DINDING PENAHAN TANAH TIPE GRAVITASI

2015 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Dimas Prasetyo Muhammad, Gerard Aponno, Suselo Utoyo
Keyword(s):  
Stability Analysis ◽  
Safety Factor ◽  
Retaining Wall ◽  
Cost Estimate ◽  
Trial And Error ◽  
Foundation Soil ◽  
Trial And Error Method ◽  
The Stability ◽  
Error Method ◽  
Horizontal Arrangement

The utilization of concrete-test-cylindrical waste was few due to it’s tendency to roll over when being stacked and the stacked form was not uniform like cubed waste. That is why the writer wants to use the cylindrical waste as a material of gravity-typed retaining wall.The purpose of this study is to find out the stability, cost, and implemention method of cylindrical waste as a material such retaining wall.The stability analysis of retaining wall made from cylindrical concrete was compared to commonly stoned retaining wall through trial and error method. The next step was to make the construction of retaining wall made from cylindrical concrete and stone to see the implemetion method and cost needed per m3.       Stability analysis results in cylindrical concrete retaining wall safe from rolling, sliding, and reaction of foundation soil. Compared to stoned retaining wall of 3,00 m tall and 1,70 m long, it has safety factor (SF) Fgl = 2.13, Fgs = 2,37, and qumax = 4,07 ton/m2  which means it is close to the FS of stoned retaining wall Fgl = 2.18, Fgs = 2,39, and qumax = 9,89 ton/m2 ; at IDR 1.012.093,74 per m3 which means it is IDR 389.553 more expensive  ; and it is of horizontal arragement.Keywords: retaining wall, concrete-test cylinder, stability, cost estimate, horizontal arrangement.

scholarly journals ANALISIS KESTABILAN JALAN GIRIAN - KEMA PADA DAERAH PERBUKITAN MINAHASA UTARA

2021 ◽  
Vol 4 (1) ◽  
pp. 221
Author(s):  
Pricilia Imanuela Jozias ◽  
Gregorius Sandjaja Sentosa
Keyword(s):  
Stability Analysis ◽  
Carrying Capacity ◽  
Hilly Area ◽  
The Road ◽  
North Sulawesi ◽  
Extreme Load ◽  
Left And Right ◽  
Pass Through ◽  
The Stability ◽  
Safe Condition

The construction of a highway in a hilly area requires attention to the stability of the land on which the road body is laid. On the widening of the road between the cities of Girian-Kema, North Sulawesi, the road body is designed to pass through hillside areas that have a slope of about 36°. In designing the road body in the hilly area must be considered the stability of the slopes on the left and right side of the road, the ability to support the soil and other structures so that the road is in a safe condition. To check the safety of this roadway, three locations of the most critically considered points will be selected to fail. At the location, slope stability analysis was carried out using the MIDAS GTS NX program and obtained the most critical security factors ranging between 1,1 and 1,4. To find out the carrying capacity of the soil, calculated the possibility of roads supporting the most extreme load using standard a crated load of 80 kN, from the analysis is known that the stress that occurs if strengthened with soil geogrid can support the load better by 46,1042 kN/m2, and obtained efficiency of 18,83%.Pembuatan jalan raya di daerah perbukitan memerlukan perhatian terhadap kestabilan tanah tempat badan jalan diletakkan. Pada pelebaran jalan antar kota Girian-Kema, Sulawesi Utara, badan jalan dirancang harus melewati daerah lereng perbukitan yang memiliki kemiringan lereng sekitar 36°. Dalam merancang badan jalan pada daerah perbukitan tersebut harus diperhatikan kestabilan lereng yang berada di kiri dan kanan jalan, kemampuan daya dukung tanah dan struktur lainnya agar jalan berada dalam kondisi aman. Untuk memeriksa keamanan lintasan jalan ini, dipilih tiga lokasi titik yang dianggap paling kritis akan mengalami kegagalan. Pada lokasi tersebut dilakukan analisis kestabilan lereng dengan menggunakan Program aplikasi MIDAS GTS NX dan diperoleh Faktor kemanan paling kritis berkisar antara 1,1 dan 1,4. Untuk mengetahui daya dukung tanah, dihitung kemungkinan jalan mendukung beban yang paling ekstrem menggunakan beban gandar standar 80 kN, dari analisis diketahui bahwa tegangan yang terjadi jika diperkuat dengan geogrid tanah dapat mendukung beban dengan lebih baik sebesar 46,1042 kN/m2, dan diperoleh efisiensi 18,83%.

scholarly journals PENILAIAN KONDISI JALAN PADA RUAS JALAN KM. 77 (BATAS PIDIE) - BATAS KOTA SIGLI

2018 ◽  
Vol 1 (3) ◽  
pp. 581-592
Author(s):  
Evi Zulfan ◽  
Sofyan M. Saleh ◽  
Yuhanis Yunus
Keyword(s):  
Comparative Analysis ◽  
Public Works ◽  
Road Maintenance ◽  
International Roughness Index ◽  
Steady State Condition ◽  
The Road ◽  
Roughness Index ◽  
Surface Distress ◽  
The Stability ◽  
National Road

Abstract : Road maintenance activities is one part of the road management and road organizer shall prioritize road maintenance to maintain the level of services in accordance with defined minimum service standards. Assessment of road conditions resulting from the survey activities. Km.77 (Batas Pidie) - Batas Kota Sigli is a national road with a length of 29.34 Km. Rating national road refers Free Road Condition Survey, No. SMD-03 / RC (relationship International Roughness Index, IRI-Surface Distress Index, SDI), which is only capable of supporting votes to traffic lanes. This research is assessed road conditions and a comparative analysis (IRI-SDI indicators and per-percentage area of damage) on the carriageway. The method used in the study, refers to the Minister of Public Works  No. 15 / PRT / M / 2007 and No. 13 / PRT / M / 2013, which is able to support the assessment of traffic lanes, shoulders, and complementary buildings (BPLK) with elements: median, ditches, culverts, retaining walls, island roads and sidewalks. The condition of the road is done through a detailed survey of road conditions with the visual method followed by processing and analyzing data, producing road conditions, type of treatment and allocation of the required budget requirements. The results show the value of the condition is above 60% steady-state condition and needs maintenance budget of Rp. 113,645,850,000.00 for all elements of the road. From the results of a comparative analysis of known value of a deviation of 4.77% for the stability of the road and -Rp.98.825.850.000,00 for road maintenance budget requirements.Abstrak: Kegiatan pemeliharaan jalan merupakan salah satu bagian dari penyelenggaraan jalan dan penyelenggara jalan wajib memperioritaskan pemeliharaan jalan untuk mempertahankan tingkat pelayanan sesuai dengan standar pelayanan minimal yang ditetapkan. Kegiatan penilaian kondisi jalan dihasilkan dari kegiatan survei jalan. Ruas jalan Km.77 (Batas Pidie) - Batas Kota Sigli merupakan ruas jalan nasional dengan panjang 29,34 Km. Penilaian ruas jalan nasional mengacu pada Panduan Survei Kondisi Jalan, No. SMD-03/RC (hubungan International Roughness Index, IRI - Surface Distress Index, SDI), yang hanya mampu mendukung penilaian untuk jalur lalu lintas. Penilitian ini dilakukan untuk menilai kondisi jalan dan analisis perbandingan (Indikator IRI - SDI dan persentase luasan kerusakan) pada jalur lalu lintas. Metode yang digunakan dalam penelitian, mengacu pada Peraturan Menteri Pekerjaan Umum (Permen PU) Nomor : 15/PRT/M/2007 dan Nomor : 13/PRT/M/2013, yang mampu mendukung penilaian jalur lalu lintas, bahu jalan, dan bangunan pelengkap (BPLK) dengan elemen : median, saluran samping, gorong-gorong, tembok penahan tanah, pulau jalan dan trotoar. Penilaian kondisi jalan dilakukan melalui survei kondisi rinci jalan dengan metode visual dilanjutkan dengan pengolahan dan analisis data, yang menghasilkan kondisi jalan, jenis penanganan dan alokasi kebutuhan anggaran yang dibutuhkan. Dari hasil penelitian diketahui nilai kondisi berada diatas 60 % kondisi mantap dan kebutuhan anggaran pemeliharaan Rp. 113.645.850.000,00 untuk seluruh elemen jalan. Dari hasil analisis perbandingan diketahui nilai deviasi sebesar 4,77 % untuk kemantapan jalan dan -Rp. 98.825.850.000,00 untuk kebutuhan anggaran pemeliharaan jalan.

scholarly journals INVESTIGATION OF POTENTIAL LANDSLIDES DUE TO LIQUEFACTION ON THE BALAROA ROAD SECTION USING THE LIMIT EQUILIBRIUM METHOD

2021 ◽  
pp. 1-8
Author(s):  
Sriyati Ramadhani ◽  
Martini ◽  
Mastura Labombang ◽  
Shafira Yuniar
Keyword(s):  
Numerical Modeling ◽  
Stability Analysis ◽  
Slope Stability ◽  
Safety Factor ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
The Road ◽  
Road Section ◽  
Unsafe Condition ◽  
Analysis Models

The earthquake that occured on September 28, 2018 in Palu city triggered liquefaction. Balaroa is one of the affected locations by liquefaction. The Balaroa area has several landslides including the road section which causes slopes to form. The purpose of this study is to identify the potential of landslides due to liquefaction on the Balaroa road section based on numerical modeling using the limit equalibrium method. This study was carried out on the Balaroa road section, which is geographically located in West Palu sub district, Palu City, Central of Sulawesi Province. The slope stability analysis models three locations that are prone to landslides using the limit equalibrium method assisted by Slide 7.0 program.The results show that the safety factor value of those three locations on the Balora road section using methods of Ordinary, Bishop and Janbu is FS<1, it indicates that the slope is in unsafe condition and prone to lanslides, therefore it needs to be taken into consideration by government

scholarly journals Slope Stability Analysis Under Pore-Water Pressure: A Case Study in Zarm-Rood Earthfill Dam, Iran

2021 ◽  
Author(s):  
Mojtaba Gholamzade ◽  
Ahad Bagherzadeh Khalkhali
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Pore Water ◽  
Safety Factor ◽  
Pore Water Pressure ◽  
Water Pressure ◽  
Slope Stability Analysis ◽  
Operating Conditions ◽  
Successful Implementation ◽  
The Stability

Abstract It is well known that construction of dams or reservoirs have geomorphological impacts on the environment and could potentially accelerate the occurrence of landslides. One of the most common impact is the occurrence of new landslides and activation of the old one, which may turn into a natural disaster. Thus, controlling the stability of landslides become challenging issue specifically in the presence of f pore-water pressure. In general, the presence of water or pore-water pressure reduces the soil resistance and also leads to increase in stimulus loads, resulting in reduction of stability coefficients. In the present study, using GeoStudio SLOPE/W software, the effect of the proximity of the dam reservoir in terms of different operating conditions on the stability analysis of the landslide area of ​​Zarm-Rood Dam is investigated. In the first step, the evaluation of internal stability of landslides and the effect of the presence of water on stability coefficients were evaluated and then the sustainable design of landslides was proposed. It was found that when extra pore-water pressure ranges from 0.2 to 0.4, safety factor is decreased by about 10%. Accordingly, safety factor is decreased by about 17% when extra pore-water pressure range from 0.4 to 0.6. This research demonstrates successful implementation of GeoStudio SLOPE/W for slope stability analysis in dam construction projects.

Burgers and mKdV equation for car-following model considering drivers’ characteristics on a gradient highway

2018 ◽  
Vol 32 (26) ◽  
pp. 1850314 ◽  
Author(s):  
Di-Hua Sun ◽  
Peng Tan ◽  
Dong Chen ◽  
Fei Xie ◽  
Lin-Hui Guan
Keyword(s):  
Stability Analysis ◽  
Traffic Flow ◽  
Burgers Equation ◽  
Mkdv Equation ◽  
Nonlinear Stability Analysis ◽  
Car Following ◽  
Jamming Transition ◽  
The Road ◽  
Car Following Model ◽  
The Stability

In this paper, we propose a new car-following model considering driver’s timid and aggressive characteristics on a gradient highway. Based on the control theory, the linear stability analysis of the model was conducted. It shows that the stability of traffic flow on the gradient highway varies with the drivers’ characteristics and the slope. Adopting nonlinear stability analysis, the Burgers equation and modified Korteweg–de Vries (mKdV) equation are derived to describe the triangular shock waves and kink–antikink waves, respectively. The theoretical and numerical results show that aggressive drivers tend to stabilize traffic flow but timid drivers tend to destabilize traffic flow on a gradient highway both on an uphill situation and on a downhill situation. Moreover, the slope of the road also plays an important role in traffic jamming transition.

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