Media Komunikasi Teknik Sipil最新文献_第6页

Study on Capacity of Pile Group in Soft Soil Using a Small-Scale Laboratory 软土中群桩承载力的小型试验研究

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.33737

Andry Galardo Naibaho, Aazokhi Waruwu

{"title":"Study on Capacity of Pile Group in Soft Soil Using a Small-Scale Laboratory","authors":"Andry Galardo Naibaho, Aazokhi Waruwu","doi":"10.14710/mkts.v27i2.33737","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.33737","url":null,"abstract":"Soft clay is one type of subgrade that is problematic in infrastructure development. Pile reinforcement is an alternative to stabilize and increase the bearing capacity of soft clay soils. This study is expected to determine the capacity of the pile group from observations through a small-scale laboratory model and its comparison with the results of the analysis. Reinforcement of the piles used are concrete piles and wooden piles. The research was conducted through model testing on single piles and group piles in soft clay soil. The piles have a length of 20 cm and a diameter of 2 cm with the number of 1, 2, 4, and 9 piles. The study results show that the overall bearing capacity of the observed results is not much different from the results of the analysis. The average bearing capacity of the wooden and concrete piles is 20% and 18% greater than the analysis. The increase in pile capacity for each additional number of piles from the observations is not as high as the analysis. There is a tendency for the soil in the pile group to move down together, so that the capacity value of the pile group on soft clay is smaller than the single pile capacity value multiplied by the number of piles in the pile group. ","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48707598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Substituting Eggshell Powder on the Consistency Limits of Lime-Stabilized Clay 蛋壳粉替代对石灰稳定粘土稠度极限的影响

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.33885

W. Diana, E. Hartono, A. Widianti, Rinda Apriliani

{"title":"The Effect of Substituting Eggshell Powder on the Consistency Limits of Lime-Stabilized Clay","authors":"W. Diana, E. Hartono, A. Widianti, Rinda Apriliani","doi":"10.14710/mkts.v27i2.33885","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.33885","url":null,"abstract":"This study aimed to investigate the use of eggshell powder (ESP) to replace lime in soil-lime stabilization. Calcite was found in significant quantities in the ESP. The soil consistency limits are commonly used to evaluate the workability and estimate the mechanical properties of stabilized soil. The pH test was used to determine the initial Consumption of Lime (ICL), which was 8%. Several test variations were performed to investigate the effect of ESP replacement on the consistency limits of soil-lime stabilization soil, substituting ESP for a portion or all of the lime content required for stabilization. Soil-lime stabilization decreases the liquid limit, plasticity index, and linear shrinkage of the soil. With lime stabilization, the plasticity index reduced by 60% - 55%. The more lime content was substituted with ESP The greater the plasticity index. However, when all lime content was replaced with ESP, the soil plasticity index reduced by 29% compared to untreated soil. The shrinkage limit of untreated soil was 10.43%; after stabilization with 8% eggshell powder, the shrinkage limit increased by 26% to 13.22%. The shrinkage ratio, volumetric shrinkage, and linear shrinkage, on the other hand, are not significantly reduced. Lime types (hydrated lime and quicklime) have nearly identical behavior in terms of changes in soil plasticity. The eggshell powder can be used for soil stabilization and can affect soil plasticity. However, the changes in plasticity are not as significant as those seen with lime stabilization.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47843436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Impact of Junction Metering for Improving Intersection Performance using Vissim Software 交叉口计量对使用Vissim软件提高交叉口性能的影响

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.29834

Andreas Budiharjo, Pipit Rusmandani, Keke Inggriani, M. A. Maulyda

引用次数: 0

Piping Potential due to springs in dam (Case study : Titab Dam) 大坝弹簧引起的管道电位(以Titab大坝为例)

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.40192

I. P. H. Anggara, Sri Sangkawati Sachro, T. Putranto

{"title":"Piping Potential due to springs in dam (Case study : Titab Dam)","authors":"I. P. H. Anggara, Sri Sangkawati Sachro, T. Putranto","doi":"10.14710/mkts.v27i2.40192","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.40192","url":null,"abstract":"The dam is one of the water infrastructures that can function as conservation, utilization, and control of thedestructive power of water. Titab Dam is one of the dams in Indonesia that has multifunction as irrigationwater, raw water and hydropower. This dam is a type of rock fill dam with an upright core which has a peaklength of 210 m, a width of 12 m, and a height of 78 m from the deepest foundation. This dam was built withrelatively complex geological conditions and landslides occurred on the spillway walls and springs were foundin the landslides so it was necessary to analyze the potential for piping due to the presence of springs. Thisstudy examines the potential for piping due to the influence of springs near the dam. The study was conductedbased on instrument observations during the inundation period from 2016 to 2019. The analysis was carriedout by calculating the acceptance criteria (KP) for seepage and seepage index (Qi) to determine seepagebehavior in the dam body and a safety factor analysis (FK) for piping hazards was carried out by comparingthe hydraulic gradient based on piezometer instrumentation readings and the hydraulic gradient of the dambody core material. Based on the calculation of the seepage acceptance criteria and the seepage index, theseepage that occurs in the Titab Dam is not safe because it exceeds the requirements, the average seepageoccurs is 6.350 > 0.56 liter/minute/m and Qi > 1. However, the analysis of the safety factor of piping hazardis still safe that is equal to 8,390 > 4.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47837231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parametric Study of Self Compacting Concrete Beams Using Finite Element Nonlinear Analysis 基于有限元非线性分析的自密实混凝土梁参数研究

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.36507

M. Effendi, Novi Rahmayanti, Ilman Fathurahman

{"title":"Parametric Study of Self Compacting Concrete Beams Using Finite Element Nonlinear Analysis","authors":"M. Effendi, Novi Rahmayanti, Ilman Fathurahman","doi":"10.14710/mkts.v27i2.36507","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.36507","url":null,"abstract":"Self-compacting concrete has self-flowing, viscous and compact properties that minimize mechanical compaction. This concrete is suitable for solving the concrete pouring in the narrow and congested reinforcement. Beams made of both self-compacting concrete and normal high-strength concrete are analyzed by MSC Marc / Mentat software. Steel is modeled by being embedded in concrete. The failure criterion of Linear Mohr-Coulomb is used for concrete and Von Mises for reinforcing steel, respectively. Concrete and the plate support are modelled by 3D solid elements. For the steel, the truss element is used. The contact analysis is implemented between beam and both steel plate and steel supports. The load-deflection curve for both concrete are almost the same as the results of the experimental curve. The results of the contact analysis also showed that there were contact and separation in the contact area. The shear retention factor value close to one meaning will restrain greater loads. The results of the study on the reinforcement ratio also showed a reduction of 70% and an increase of 70% when using minimum and maximum reinforcement, respectively. The larger concrete cover also reduces the load that the beams can restrain.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44219187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Liquefaction Potential Based on The Grain Size Distribution of Soils and Cone Penetration Test (CPT) Data 基于土壤粒度分布和圆锥贯入试验（CPT）数据的液化潜力分析

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.40276

Deo Pratama Prayitno, H. Artati

{"title":"Analysis of Liquefaction Potential Based on The Grain Size Distribution of Soils and Cone Penetration Test (CPT) Data","authors":"Deo Pratama Prayitno, H. Artati","doi":"10.14710/mkts.v27i2.40276","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.40276","url":null,"abstract":"Liquefaction is a failure phenomenon in the soil layer which generally occurs due to cyclic loads from earthquakes. This study was conducted to determine the potential for liquefaction based on soil grain size distribution and CPT data in the UII Hospital area in Wijirejo Village, Bantul, DIY. Based on its geographical location, the Bantul district has a high earthquake potential because it is near an opak fault and is located in a subduction zone between the Indo-Australian Plate and the Eurasian plate. Along with this, there is urgency for this research. Analysis based on the grain size distribution of the soil was evaluated using the Tsuchida curve (1970). Analysis based on CPT data was evaluated using the Seed & Idris (1971) and IM Idriss & RW Boulanger (2008) equations to obtain a soil layer safety value, which was then used to predict the level of potential liquefaction with the LPI value using the Luna & Frost (1998) equation. Based on the grain size distribution using the Tsuchida curve (1970) in Wijirejo Village, the soil layer at a depth of 1 meter is dominated by sandy soil and silt, which has liquefaction potential. Based on CPT data, all sondir points have a very high liquefaction potential with consecutive LPI values 48,405; 52,160; 57,498; and 46,942 with a potential liquefaction zone depth of 0.20 to 13.20 meters from the ground level.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44354026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Soil Surface Seismic Hazard Maps as Basic Disaster Mitigation Based Spatial Planning in Riau Province 廖内省基于基础减灾的土壤地表地震危险性图空间规划比较

Media Komunikasi Teknik Sipil Pub Date : 2021-12-30 DOI: 10.14710/mkts.v27i2.36902

Elvis Saputra, Fitri Nugraheni, Widodo Pawirodikromo, L. Makrup

{"title":"Comparison of Soil Surface Seismic Hazard Maps as Basic Disaster Mitigation Based Spatial Planning in Riau Province","authors":"Elvis Saputra, Fitri Nugraheni, Widodo Pawirodikromo, L. Makrup","doi":"10.14710/mkts.v27i2.36902","DOIUrl":"https://doi.org/10.14710/mkts.v27i2.36902","url":null,"abstract":"Spatial planning has an important role in disaster mitigation efforts. The availability of earthquake maps is very useful in spatial planning. The need for spatial planning today is micro spatial planning. Therefore, the 2017 national earthquake map needs to be detailed into a micro zonation map at the district or city scale. The ground acceleration presented in the national earthquake map was the acceleration at bedrock, while in spatial planning it is the necessary acceleration at the surface. Therefore, the purpose of this research was to obtain a map of the earthquake at the surface with a micro-scale. Determination of the acceleration value at the surface was carried out by two models. Model-1, the surface acceleration was obtained by multiplying the results of the PSHA analysis at bedrock by the amplification factor based on SNI-1726. While Model-2, the acceleration value at the surface was directly obtained from the results of PSHA analysis using the average surface shear wave velocity (Vs30) based on data from the USGS. The result of this study showed that from the 2 analytical models used, Model-2 has a higher surface acceleration value than Model-1. Riau Province has 12 districts. in general, the 12 districts were included in the low to moderate risk index class, but there was one district that was close to the high index class, namely Rokan Hulu district.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67038702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vehicle Trajectory Test on Interlocking Pavement Made From No Fine Agregate Concrete 无细骨料混凝土联锁路面车辆轨迹试验

Media Komunikasi Teknik Sipil Pub Date : 2021-08-20 DOI: 10.14710/mkts.v27i1.27387

Adityo Budi Utomo, B. Dhanardono, L. F. Hidayatiningrum

引用次数: 1

Creep Behavior of Open Web Truss Joist Made of LVL Sengon LVL Sengon开腹板桁架梁的徐变特性

Media Komunikasi Teknik Sipil Pub Date : 2021-08-20 DOI: 10.14710/mkts.v27i1.31916

A. Basuki, A. Awaludin, B. Suhendro, S. Siswosukarto

{"title":"Creep Behavior of Open Web Truss Joist Made of LVL Sengon","authors":"A. Basuki, A. Awaludin, B. Suhendro, S. Siswosukarto","doi":"10.14710/mkts.v27i1.31916","DOIUrl":"https://doi.org/10.14710/mkts.v27i1.31916","url":null,"abstract":"Laminated Veneer Lumber (LVL) Sengon is classified as one of the engineering products having a significant increase of both physical and mechanical properties compared with Sengon solid wood. Considering its short planting years and sustainable production, Sengon wood is very potential to be used as construction materials of low-rise houses to support the housing needs in Indonesia. Creep behaviour of LVL Sengon material is one of the mechanical properties that needs to be considered. This article evaluated value of creep factor of the open web truss joist (OWTJ) LVL Sengon test and compared this experimental creep factor with the numerical results developed by FE model taking into account the viscoelastic parameters of authors' previous study. The viscoelastic parameters were based on a 217-day creep test of compression and tension parallel to the grain of LVL Sengon at 20 % of stress level that were further modeled using Prony series creep model having n equals to 3. The reduction in the modulus of elasticity over time resulted in creep deflection and creep factor values at 217 days of testing results and FE numerical analysis of the OWTJ LVL Sengon ranging from 1.50–1.54; while the predicted creep factor at 25 years of service life is 1.57 or greater than the creep factor value provided in SNI 7973: 2013 of 1.5.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45716168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Shape Modification on I Girder and Box Girder Prestressed Concrete to Stiffness and Displacement 形状修改对工字梁和箱梁预应力混凝土刚度和位移的影响

Media Komunikasi Teknik Sipil Pub Date : 2021-08-20 DOI: 10.14710/mkts.v27i1.26069

H. Prayuda

{"title":"Effect of Shape Modification on I Girder and Box Girder Prestressed Concrete to Stiffness and Displacement","authors":"H. Prayuda","doi":"10.14710/mkts.v27i1.26069","DOIUrl":"https://doi.org/10.14710/mkts.v27i1.26069","url":null,"abstract":"Prestressed concrete has been widely used in structural buildings, especially for big span length purposes. The prestressed concrete dimension cross sections normally are fixed, provided by the factory based on their experience for every span length. However, this size aspect can be developed to make better improvement. In this study, I and box girder shapes were modified with the same total cross-sectional area. Three types of modification have been made for each girder shape by giving the space on the middle for I girder and changing form from trapezoidal to rectangular section for box girder. The number of steel tendons for this research was made typically and same so that the stress and displacement can be compared fairly. Manual calculation was performed for all samples and was completed under three circumstances namely initial condition, loading condition, and final condition. Also, the manual calculation is according to Indonesian provisions, which are SNI 2833-2016 for the earthquake load and SNI 1725-2016 for normal loading on bridges. From the result, it is known that one shape for each girder shape has met the criteria for the smallest stress and displacement.","PeriodicalId":31880,"journal":{"name":"Media Komunikasi Teknik Sipil","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67038631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2