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MEDIA KOMUNIKASI TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : 08541809     EISSN : 25496778     DOI : -
Core Subject : Engineering,
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 isn’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.
Arjuna Subject : -
Articles 16 Documents
Search results for , issue "Volume 30, Nomor 1, JULI 2024" : 16 Documents clear
Pemodelan Debit Banjir Rencana Berbasis Data Hujan Satelit pada Daerah Tangkapan Air Bendungan Meninting Hartyan, Dionysius Edna; Suripin, Suripin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.59024

Abstract

Rainfall stations around the Meninting Dam catchment area are very limited. Global Precipitation Measurement (GPM) satellite rainfall data can be utilized to fulfill the lack of rainfall data. This research aims to improve the quality of flood discharge in the Meninting Dam catchment area through rainfall data correction. GPM rainfall data was corrected using the probability curve method, while flood discharge analysis used HEC-HMS modeling. The results showed that the correlation coefficient of GPM rainfall data with Sesaot Rainfall Station was 0,73, the average HHMT error decreased by 2.99% after correction, and the correction factor level was 0-1,2 for each rainfall value range. The flood discharge (Q) of HEC-HMS modeling for each return period was obtained Q2th = 117,1 m3/sec, Q5th = 142,5 m3/sec, Q25th = 242,3 m3/sec, Q100th = 335,6 m3/sec, Q1000th = 529,3 m3/sec, and QPMF = 930,9 m3/sec.
Pengaruh Perbandingan Nilai Termal Terhadap Deformasi Fondasi Tiang Energi Menggunakan Metode Numerik Pratiwi, Desti Santi; Naufal Shidqi, Gary Muhammad
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.58552

Abstract

A thermal energy foundation is an innovative combination of a foundation structure with thermal pipes that can absorb geothermal heat. This allows it to serve as an alternative source of electricity for the building above it. The goal of this technology is to help achieve sustainable infrastructure targets by minimizing the use of fossil fuels from a geotechnical perspective. This study aims to analyze the thermal effect on foundation deformation using the Finite Element Method approach. The modelling is done using PLAXIS software with element meshes to provide comprehensive deformation results. Additionally, the model is used to vary the thermal parameters of the soil and the quality of the foundation concrete. The analysis results indicate that variations in thermal conductivity values lead to a 34.112% decrease in deformation due to reduced thermal conductivity, while variations in the quality of concrete used in the foundation show a relatively small or insignificant effect on the deformation.
Pengelolaan DAS Mikro: Best Practice Penanganan Potensi Konflik Akibat Semburan Gas di Lahan Pertanian Desa Nglobo, Kabupaten Blora, Jawa Tengah Sriyana, Ignatius; Sangkawati, Sri; Roselyn, Melfina; Kusmiyati, Florentina; Ramadan, Bimastyaji Surya
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.60034

Abstract

Gas emissions occurring in the agricultural land of Nglobo Village, Blora Regency, Indonesia, have led to land contamination, resulting in worsened of watershed health over time. The evidence is apparent in the water and soil quality exceeding water quality standard. Consequently, conflicts have arisen in the community due to failed harvests of rice and corn, impacting crops failed. The aim of this research is to restore the health of the contaminated watershed, addressing both agricultural land and water quality. The methodology in this research involves a micro watershed management approach, which includes discussion activities with the community and other parties, remediation efforts, field schools and monitoring and evaluation. The study findings suggest that the addition of organic fertilizers to restore soil fertility, particularly enhancing soil organic carbon, is crucial. This is achieved by applying 29.58 tons/ha to 30.14 tons/ha of fertilizer on the affected land. Post-remediation water quality shows values below the threshold, indicating the health of the Nglobo river basin. The results of the planting test evaluation showed that rice and corn were in good condition, as evidenced by the absence of crop failure, and the fertility of agricultural land could be restored.  Micro watershed management approach, of measurable, with real action together with the affected communities and related parties, can resolve social conflicts that occur due to pollution of community agricultural land.
Penentuan Initial Elevation untuk Mendukung Operasi Early Release Bendungan Sadawarna Wahyudi, Andri Puji; Wulandari, Dyah Ari; Sriyana, Ignatius
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.62293

Abstract

Modifications of Sadawarna Dam include the addition of a sluice gate that is placed on the right side of the spillway which functions as an early release facility along with an intake to lower the reservoir water level before the flood comes. Implementation of early release on reservoir routing requires an initial elevation that is different from the initial elevation in general. The aim of this research is to determine the new initial elevation to support early release operations for the Sadawarna Reservoir. This research was conducted by calculating return flood discharge and flood routing in reservoir with 3 (three) scenarios of initial elevation. The method used for analysis of return flood discharge is SCS (Soil Conservation Service). The reservoir routing method uses level pool routing with the HEC-HMS application. Initial elevation is determined by 3 (three) scenarios that started from initial elevation +75,25 masl, +77,00 masl, and +78,50 masl. The results of 3 (three) scenarios showed that the optimal initial elevation that can be used in early release operations is at an elevation of +77,00 masl. The results of the reservoir flood routing simulation with initial elevation resulted reduction flood discharge up to return period of 50 years and resulted in the fastest reservoir water level recovery
Simulasi Numerik Aeroelastik Model Seksional 2D Jembatan Bentang Panjang untuk Mengetahui Karakteristik Ketidakstabilan Flutter sulistiya, sulistiya; Moelyadi, Mochammad Agoes; Kusni, Muhammad; Akbar, Mahesa
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/vol%viss%ipp%p

Abstract

Flutter is an aerodynamic instability on a long span bridge that can cause damage to the entire bridge deck structure. The interaction between wind and structure in long span bridges can be investigated by numerical simulation. In this study, an aeroelastic simulation was performed on a 2 DoFs sectional model of a long-span bridge deck with free vibration techniques to analyze flutter speed and determine the effect of deck shape on flutter instability characteristics using ANSYS software. The simulation result data was then extracted using the Modified Ibrahim Time-Domain Method (MITD) identification method to obtain the damping ratio and flutter derivatives coefficients. The damping ratio value is used to determine the critical flutter speed, whereas the coefficient flutter derivatives is used to determine the characteristics of flutter instability and the flutter mechanism that occurs in the bridge. The results showed that the rectangular shape (bluff body) is more susceptible to flutter instability than the streamlined shape, and has a lower flutter speed value than the other shapes. The flutter mechanism that occurs is torsional flutter, whereas in the streamline body is coupling flutter.
Pengaruh Air Laut terhadap Kuat Tekan, Permeabilitas, dan Mikrostruktur Beton Geopolimer dengan Flyash dan Tanah Putih sebagai Pengganti Semen Priastiwi, ST. MT., Yulita Arni; Wibowo, Hardi; Puwanto, Purwanto; Hidayat, Arif; Ulayya, Inandhiya; Carita, Nensi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.63604

Abstract

Meningkatnya pembangunan infrastruktur suatu kawasan terkadang terletak pada lingkungan agresif salah satunya yaitu pada wilayah pesisir pantai sehingga kontak langsung dengan air laut tidak dapat dihindari. Penelitian ini bertujuan untuk mengetahui pengaruh air laut terhadap beton geopolimer menggunakan fly ash dan tanah putih sebagai pengganti semen dengan parameter pengujian kuat tekan, permeabilitas dan mikrostruktur. Benda uji yang digunakan berbentuk silinder berukuran 150x300 mm dan 100x200 mm. Perbandingan fly ash dan tanah putih yang digunakan sebesar 85%: 15% serta aktivator yang digunakan yaitu NaOH 8M dan Na2SiO3 dengan perbandingan 1:2,5. Proporsi campuran mengunakan perbandingan 1 fly ash : 1,497 pasir : 2 split : 0,451 alkali aktivator dengan mutu rencana adalah 35 MPa. Pengujian dilakukan setelah beton melalui proses curing selama 56 hari, kemudian beton dikondisikan tanpa rendaman dan dengan rendaman lebih dari 28 hari. Pengujian dilakukan pada umur beton 56 dan 87 hari. Hasil pengujian menunjukan bahwa beton geopolimer dengan pengaruh air laut memiliki nilai kuat tekan lebih tinggi dengan koefisien permeabilitas lebih kecil dibanding dengan beton tanpa pengaruh air laut saat umur pengujian. Mikrostruktur beton geopolimer dengan pengaruh air laut menghasilkan struktur morfologi berbentuk matriks yang lebih padat dengan sedikit pori-pori dibandingkan dengan beton tanpa pengaruh air laut.
Gangguan Sampel dan Dampaknya Pada Sifat-Sifat Tanah Dalam Uji Laboratorium Mekanika Tanah : Literature Review Agustian, Yanyan; Komarudin, Udin; Ardiansyah, Neris Peri
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.58043

Abstract

Sample disturbance in soil laboratory testing poses a significant issue due to its impact on test results, which can further affect geotechnical and foundation design. This study aims to analyze previous research related to various sampling methods and laboratory tests to understand the characteristics and properties of disturbed soil samples and their test results. Additionally, it seeks to understand developments in mitigating these disturbances, thereby encouraging researchers to continue developing methods and testing equipment that minimize sample disturbance. The methodology involves a literature review spanning the last 70 years, leading to several key conclusions: First, sample disturbance can occur during sampling and laboratory testing, including sampling methods, sample size, testing techniques, and equipment. Second, the most crucial impact of sample disturbance is the alteration in shear strength under both static and dynamic conditions, as well as changes in soil compressibility. To address these issues, this research proposes using a combination of laboratory tests and in-situ testing as an effective alternative to minimize disturbances and validate laboratory test results.
Pengoperasian Pintu Pembilas terhadap Efisiensi Penggelontoran Sedimen: Studi Kasus Bendung Alale Dermawan, Very; Cahya, Evi Nur; Hidayat, Muhammad Nurjati; Sholawatini, Nur
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.60651

Abstract

This study discuss about hydraulic physical model tests of Alale weir to ensure hydraulic flow behaviour of design flood, condition on downstream of weir, and sediment flushing. In this study, observation were made on a physical hydraulic model in the laboratory with a scale of 1 : 50. Flushing tests were carried out to determine effectivity of the flushing, condition of sedimentation or scouring that occurred at downstream. Alale Weir has 3 flushing gate on the right side of the weir. Flushing is carried out using discharge Q25yr with a flowing duration of 1 hour. Flushing gate has considered quite effective in flushing sediment from upstream of weir. The sediment carried is almost 50% in all flushing scenarios. 6th flushing scenario (gate 1 and 2 were closed and gate 3 was fully opened) has the highest efficiency, 53.81%.
Karakteristik Hidraulik Banjir Bendung Karet Sungai Juwana Kabupaten Pati Halik, Gusfan; Silmi Kaaffah, Abdillah Tirta; Saifurridzal, Saifurridzal
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.62047

Abstract

Kabupaten Pati, Provinsi Jawa Tengah merupakan daerah yang sering mengalami banjir diantaranya  banjir rob dan banjir bandang pada musim penghujan. Balai Besar Wilayah Sungai Pemali-Juana telah merencanakan pembangunan bendung karet yang telah dibangun pada tahun 2022 -2024 untuk mengatasi permasalahan tersebut. Bendung Karet ini diharapkan mampu menjadi solusi pengendalian banjir maupun sebagai sistem penyimpanan air pada saat musim kemarau. Penelitian ini bertujuan untuk memodelkan karakteristik hidrolik aliran di Bendung Karet Juwana pada kondisi banjir berbagai kala ulang (10, 20, 25, 50, dan 100 tahun). Pemodelan karakteristik hidrolik aliran menggunakan bantuan perangkat lunak HEC-RAS 5.0.3. Hasil pemodelan menunjukkan bahwa pada kondisi bendung karet mengembang maksimal terjadi aliran balik (backwater) sepanjang 2,26 km ke arah hulu bendung. Ketinggian muka air di atas bendung karet sebesar 1,0 meter dengan kecepatan aliran di hulu dan hilir ambang bendung masing-masing sebesar 0,40 m/dt dan 0,66 m/dt. Pengendalian tinggi muka banjir terhadap overtopping dapat optimal jika pada saat ketinggian muka air 0,60 meter diatas mercu. Secara hidraulik, hasil simulasi menunjukkan kecepatan pengempisan 0,2 meter/menit dapat mengontrol terjadinya overtopping secara optimal.
Pengaruh Penggunaan Zeolit dan Serat Agave Sisalana Terhadap Kuat Tekan dengan Metode Self Compacting Concrete (SCC) Zulkarnain, Fahrizal; Batubara, Amar Azhari
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1, JULI 2024
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.57981

Abstract

Self Compacting Concrete (SCC) is concrete innovation which  does not  require vibrations during installation and compaction. SCC concrete can flow freely with its weight and is capable of filling a mold well, ensuring perfect compaction without vibration. In 1988, in order to eliminate or reduce the need for vibration to achieve density and thereby reduce the labor required for concrete placement, SCC was developed in Japan. In this research, the production of SCC was investigated by replacing the fine aggregate in the SCC mixture by 3%, 7% and 11% of zeolite material and by adding 0.005% of agave sisalana fiber of cement weight. The 15/30 cm concrete cylinders were used in 16 samples for compressive strength.  It is shown that the values of flowability, filling capacity, and permeability decrease with increasing use of zeolite content based on the results of the research conducted. The results of the compressive strength test show that the variation of 7% zeolite + 0.005% sisalana fiber has the highest value of compressive strength at FAS 0.43, with an average of 38.46 MPa, and the highest value of compressive strength at FAS 0.45, with an average of 37.07 MPa.

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