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MEDIA KOMUNIKASI TEKNIK SIPIL

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Published by Universitas Diponegoro

ISSN : 08541809 EISSN : 25496778 DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

Media Komunikasi Teknik Sipil (ISSN 0854-1809) published twice in a year, in July and December. The article can be product of researches, scientific thoughts or case study, in civil engineering and isnâ€™t formed by politics, commercialism, and subjectivity unsure. This scientific journal contains articles of thought and research results in Civil Engineering that have never been published in scientific journals or other media.

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Articles 472 Documents

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Analisa Kinerja Terminal Petikemas di Tanjung Perak Surabaya (Study Kasus: PT. Terminal Petikemas Surabaya) Supriyono, Supriyono
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 19, Nomor 1 (2013)
Publisher : Department of Civil Engineering, Diponegoro University

Container terminal performance as a system with many variables that influence it. Results of data analysis for research activities by field survey method in 2009, were TPS performance include BOR (quay performance) 53.77% and BTP (the number of containers passing through the quay) 1.61 box/meter long pier, YOR (field performance stacking) for export 23.91% and import 55.12%. Application of model scenario analysis, the changing the length of the quay cutting the time does not operate in the dock shows the change in the performance of container terminals, among others: Scenario A, the addition of 500m quay length can reduce the density on the quay marked with: BOR 43.02% BTP 1.29 box/m, and YOR 51.96%. Scenario B, time does not operate the sip could be reduced up to 2 hours so that berth time of 20.98 hours to 18.98 hours by eliminating time off between shifts with performance:BOR 48.64%, BTP 1.45 box/m, and YOR 46.30%. Scenario C, applying the minimum service time for the entire container unloading device performance with the BOR 39.72%, BTP 1.19 box/m and YOR 18.17%.

Analisis Perkuatan Timbunan Di Atas Tanah Lunak Menggunakan Dinding Turap dengan Pendekatan Model Numerik Hamdhan, Indra Noer; Iskandar, Fauziah Fitriani
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1 (2019)
Publisher : Department of Civil Engineering, Diponegoro University

Embankment on soft clay may be affect settlement at subgrade, causing lateral deformation and vertical deformation around embankment. Therefore, reinforcement is needed to overcome the effects caused of the embankment. This research was conducted to find out the influence of sheet pile wall of embankment using PLAXIS 2D program based the finite element method. The analysis was done by varying of two condition, they are installation of sheet pile wall under the embankment and the sheet pile wall outside embankment. Sheet pile wall installation is carried out before embankment construction and length of sheet pile wall in this model is 15 m. The soil layers beneath the embankment consist of 10 m layer of soft clay layer and 5 m of sand layer. The height of embankment in this analysis is 8 m, where the constructing of the embankment was done in stages. The distance of sheet pile wall position under embankment from toe of embankment are -9 m, -6 m, -3 m, 0 m, 3 m dan 6 m. The results of analysis show the effective position for displacement are toe of embankment. The Installation of sheet pile walls below the embankment will reducing deformation up to 78% and the safety factor will increase up to 10%.

Stress-Strain Relation and Nonlinear Behavior of Circular Confined Reinforced Concrete Columns Tavio, Tavio; Tata, Arbain
MEDIA KOMUNIKASI TEKNIK SIPIL Tahun 16, Nomor 3, OKTOBER 2008
Publisher : Department of Civil Engineering, Diponegoro University

This paper presents a nonlinear finite element modeling and analysis of circular normal-strength reinforced concrete columns confined with transverse steel under axial compressive loading. In this study, the columns were modeled as discrete elements using ANSYS nonlinear finite element software. Concrete was modeled with 8-noded SOLID65 elements that can translate either in the x-, y-, or z-axis directions from ANSYS element library. Longitudinal and transverse steels were modeled as discrete elements using 3D-LINK8 bar elements available in the ANSYS element library. The nonlinear constitutive law of each material was also implemented in the model. The results indicate that the stress-strain relationships obtained from the analytical model using ANSYS are in good agreement with the experimental data. This has been confirmed with the insignificant difference between the analytical and experimental, i.e. 1.011 and 1.306 percent for the peak stress and the strain at the peak stress, respectively. The comparison shows that the ANSYS nonlinear finite element program is capable of modeling and predicting the actual nonlinear behavior of confined concrete column under axial loading. The actual stress-strain relationship, the strength gain and ductility improvement have also been confirmed to be satisfactorily. Keywords: ANSYS, confinement, ductility, stress-strain relationship, nonlinear finite element analysis, nonlinear behavior, reinforced concrete columns, strength ABSTRAK Makalah ini menyajikan pemodelan dan analisis elemen hingga nonlinier kolom bulat beton normal bertulang yang dikekang dengan baja transversal dibawah pembebanan aksial tekan. Dalam studi ini, kolom dimodelkan sebagai elemen diskrit menggunakan perangkat lunak elemen hingga nonlinier ANSYS. Beton dimodelkan dengan elemen SOLID65 8-titik yang dapat bertranslasi baik dalam arah sumbu-x-, -y, or -z dari pustaka elemen ANSYS. Baja longitudinal dan transversal dimodelkan sebagai elemen diskrit menggunakan elemen batang LINK8-3D yang tersedia dalam pustaka elemen ANSYS. Hukum konstitutif nonlinier setiap material juga diterapkan dalam model. Hasilnya menunjukkan bahwa hubungan tegangan-regangan yang diperoleh dari model analisis menggunakan ANSYS sangat sesuai dengan data eksperimental. Hal ini telah dikonfirmasi dengan perbedaan yang tidak signifikan antara hasil analisis dan eksperimental, yaitu 1,011 and 1,306 persen masing-masing untuk tegangan puncak dan regangan saat tegangan puncak. Perbandingan menunjukkan bahwa program elemen hingga nonlinier ANSYS mampu memodelkan dan memprediksi perilaku nonlinier aktual kolom beton terkekang dibawah pembebanan aksial. Hubungan tegangan-regangan aktual, peningkatan kekuatan dan perbaikan daktilitas juga telah dikonfirmasi memuaskan.Kata kunci: Analisis elemen hingga nonlinier, ANSYS, daktilitas, hubungan tegangan-regangan, kekuatan kolom beton bertulang, pengekangan, perilaku nonlinierPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3699[How to cite: Tavio dan Tata, A. (2008), Stress-Strain Relation and Nonlinear Behavior of Circular Confined Reinforced Concrete Columns, Jurnal Media Komunikasi Teknik Sipil, Tahun 16, Nomor 3, pp. 255-268]

Pengaruh Substitusi Pozolan Alam (Tras) terhadap Semen pada Kuat Tarik Campuran CTRB Waani, Joice; Prabandiyani, Sri; H Setiadji, B
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 20, Nomor 1 (2014)
Publisher : Department of Civil Engineering, Diponegoro University

The use of Cement Treated Recycling Base (CTRB) material in Indonesia, is a very well established practice in Indinesia. This mixture containing Reclaimed Asphalt Pavement (RAP) and Reclaimed Aggregate Materials (RAM) and stabilized with portland cement as pavement structural base layer. This technique has been applied in the field in some pavement major rehabilitationand reconstruction projects successfully. However, identical to other cementitious stabilized materials, this CTRB material is prone to cracks during service. For that reason, the use of cement as a stabilized material in CTRB has to be reviewed thoroughly before implementation in the field. The use of recyclable materials in pavement applications is not only environmentally friendly, but also can reduce the cost of materials in a particular project. In addition, a reduction in the use of cement in the CTRB material has a potential to reduce anticipated cracks that influence the physical characteristic of the mixtures. In this research project, the Indirect Tensile Strength (ITS) Test was conducted to review the influence of partial cement replacement with natural pozzolan (trass) to the mechanical properties of the CTRB to withstand tensile stress. A lower ITS value correlates to the shrinkage cracking tendency of the material. The results show that the increase in the percentage of cement replacement correlates well to the increase of the ITS values. Direct correlations exist for 15% and 30% cement replacement of the 4% to 6% CTRB cement content with 40% RAP-60% RAM and 60% RAP – 40% RAM combinations.

Manejemen Kualitas Air di Sungai Sigeleng Desa Randusanga Kulon Brebes Barkah, Atiyah; Setiyawan, Gunanto
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 13, Nomor 2, Edisi XXXII, JUNI 2005
Publisher : Department of Civil Engineering, Diponegoro University

Development in developing countries is meant to yield development progress, although usually followed by environmental damage. This problems is caused by the act of human being which heedless of the conservation aspect. One of its impact is low quality of water river.This condition can be observed by the indication of low dissolve oxygen Concentration (DO), high biological oxygen requirement concentration (BOD), and high suspended soil ( SS). This condition can causes damage to environment and ecology inbalance. Resident growth, animal husbandry and compost heap in the Sigeleng River of Randusanga Kulon Village, Brebes of Central Java, have resulted the water contamination. Therefore, expected with the approach of inwrought water quality management studying goodness from law aspect, technical, economics and society can be existed by a make-up of environmental quality in the Sigeleng River Sigeleng atÂ years to come. In addition, from the observation water quality, the fluoride (F) content at least 1.702 mg/l > 1.500 mg/l (the permissible value), the timbale (Pb) content at least 0,275 mg/l >0,100 mg/l the fluoride and Chemical oxygen demand (COD) content at least 160 mg/lÂ > 50 mg/l. Ti increase the qualities of that water resources as become fresh water, it can be efforted of treatment for the neutralize using of contant F, Pb and COD. Threatment of water quality i.e.Â sedimentation, filtration, and chemical prosses such asÂ activated carbonation and ziolith sand. Keywords: water quality managementPermalink: http://ejournal.undip.ac.id/index.php/mkts/article/view/3912[How to cite: Barkah, A. dan Setiyawan, G., 2005, Manejemen Kualitas Air di Sungai Sigeleng Desa Randusanga Kulon Brebes, Jurnal Media Komunikasi Teknik Sipil, Voume 13, Nomor 2, pp. 85-93]

Perbandingan Nilai Kuat Tekan Beton Menggunakan Hammer Test dan Compression Testing Machine terhadap Beton Pasca Bakar Dharmawan, Weka Indra; Oktarina, Devi; Safitri, Mariana
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 22, Nomor 1 (2016)
Publisher : Department of Civil Engineering, Diponegoro University

The change of temperature is quite high, as was the case in the event of a fire, it will have an impact on the concrete structure. Because in the process there will be a cycle of alternately heating and cooling, which would lead to a change in phase of the complex physical and chemical basis. Using hammer test as a comparison of compression testing machine (CTM) in normal conditions the concrete now widely used and has had standardization. The objects to test consist of 60 concrete cubes beam of 15 cm x 15 cm x 15 cm which burned for 3 hours with 3 variants of temperatures. The 20 samples used as a blank test and each 20 samples burnt with temperature 300oC and 600oC. The results showed the increase in the compressive strength at the temperature of 300oC in the amount of 6.68% or 10.91 Kg/cm2, and at the temperature of 600oC has decreased by 1.57% or 2.56 Kg/cm2 on hammer test. While the testing with compression strength of concrete decreased at temperatures of 300oC and 600oC respectively is 15.77% or 51.1 Kg/cm2 and 21.89% or 70.93 Kg/cm2.

Concrete Recycling Han, Ay Lie
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 14, Nomor 2, Edisi XXXV, JUNI 2006
Publisher : Department of Civil Engineering, Diponegoro University

Limbah benda uji beton yang tertimbun di Laboratorium Bahan dan Konstruksi, Fakultas Teknik Jurusan Sipil Undip setiap harinya mencapai kubikasi yang cukup tinggi.Â Bahan ini merupakan komponen limbah industri yang dapat mempengaruhi tata guna lahan dan merupakan pencemar lingkungan.Â Pada proses pembongkaran bangunan lama, volume limbah beton akan lebih besar lagi.Â Berbagai usaha telah dilakukan untuk mendaur ulang atau memanfaatkan bahan limbah beton.Â Salah satu alternatif yang dipandang baik secara struktur maupun dari segi ilmu lingkungan adalah mendaur ulang dan memakai kembali bahan agregat kasar yang berasal dari bahan beton.Â Sifat fisis dan mekanis bahan agregat ini berbeda dengan bahan agregat asli yang berasal dari pemecahan batu.Â Faktor-faktor yang sangat berpengaruh adalah kadar resapan yang tinggi, adanya sisa-sisa mortar yang menempel pada agregat dan variasi kualitas bahan dasar yang sulit ditentukan secara tepat.Â Tulisan ini membahas perkembangan paling dini dalam bidang daur ulang agregat. Hasil-hasil penelitian yang dilaksanakan oleh Laboratorium Bahan dan Konstruksi, Fakultas Teknik Jurusan Sipil Undip akan di evaluasi secara singkat. Kata kunci: agregat daur ulang (RCA), kuat tekan, sifat-sifat agregat, ilmu lingkunganPermalink: http://www.ejournal.undip.ac.id/index.php/mkts/article/view/3946[How to cite: Han A.Y., 2006, Concrete Recycling, Jurnal Media Komunikasi Teknik Sipil, Volume 14, Nomor 2, pp. 198-205]

Pengaruh Rendaman pada Indirect Tensile Strength Campuran AC-BC dengan Limbah Plastik sebagai Agregat Pengganti Tajudin, Anissa Noor; Suparma, Latif Budi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2 (2017)
Publisher : Department of Civil Engineering, Diponegoro University

The pavement vulnerability of moisture and the risk of environment quality depression caused by plastic waste became the main reason of the effort to increase pavement strength with the use of plastic waste. This study was conducted to understand moisture effect to the fatigue risk with Indirect Tensile Strength (ITS) of AC-BC Hotmix with the use of plastic waste as aggregate substitution. The variance of plastic waste used are 0%, 25%, and 50% of aggregate volume passing sieve No. 4 and retaining on sieve No. 8. The test was conducted with the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days. The result of ITS test showed that longer immersion time will make Tensile Strength Ratio (TSR) become lower. TSR values of 0% plastic waste at the immersion time of 30 minutes, 1 day, 2 days, 4 days, and 7 days respectively are 100%; 79,13%; 62,18%; 54,19%; and 44,25%. For 25% plastic waste are 100%, 82,12%, 66,68%, 64,03%, and 56,91%. And for the 50% plastic waste are 100%, 96,21%, 84,34%, 80,53%, and 76,21%.

Studi Perbandingan Metoda WSD dan LRFD dalam Analisa Struktur Anjungan Lepas Pantai Tawekal, Ricky L.
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 12, Nomor 2, Edisi XXIX, JULI 2004
Publisher : Department of Civil Engineering, Diponegoro University

Up to this moment, most of structural design of offshore platforms are carried out by using traditional Allowable Stress Design (or Working Stress Design) specification adopted in American Petroleum Institute (API RP2A â€“ WSD) Codes. In this method, loads and stresses are calculatedÂ based on linier elastic material and then compare them to the allowable loads and stresses. Recently, Load and Resistance Factor Design specification adopted in API RP2A â€“ LRFD have been developed from the API RP2A â€“ WSD using reliability based calibration. General industry practices recognise that older, existing offshore structures may not meet current design standards. However, many of these platforms that are in acceptable condition can be shown to be structutrally adequate using a risk based assesment criteria that considers platform use, location, and the consequences of failure. In this paper, a comparison study on WSD and LRFD methods in structural analysis of offshore platform is carried out by using a monopod offshore platform model. Structural analysis and unity check are performed by using SACS version 5.1 software. Keywords: working stress design, load and resistance factor design,Â offshore structures

Dampak Kerusakan Dini Perkerasan Jalan terhadap Kerugian Aspek Finansial Simamora, Marsinta; Trisnoyuwono, Diarto; Muda, Anastasia Hendrina
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 24, Nomor 2, (2018)
Publisher : Department of Civil Engineering, Diponegoro University

National road management is not optimal and inefficient, the indications can be seen from the number of early damage cases of the road construction found. Indeed, natural damage to road construction is unavoidable but it becomes a problem if the damage occurs not long after the road product is handed over to the road manager or the government. Then the next question can arise whether the phenomenon of early pavement damage will cause harm to both road users and the government.This study aims to show the thinking framework of financial consequences and apply it through a model due to the occurrence of premature damage. Referring to the concept of benefit value that is represented by road conditions over the life of the service, then roads that have been damaged before their construction ends will result in losses due to loss of benefits. Based on this concept, a simulation was conducted using a national road data. Simulation results show that there is an estimated financial loss due to the occurrence of early damage. For early damage with a condition value of loss of 36 then the estimated loss is Rp 458,257,899.41 per kilometer. Estimated average loss per kilometer for each loss of one unit of condition value is Rp 12,72,386.09. The results of this study also show that roads that do not suffer early damage do not cause losses or losses are zero.

Page 16 of 48 | Total Record : 472

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