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All Journal Rekayasa Sipil Sprocket : Journal of Mechanical Engineering Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil PROFICIO: Jurnal Pengabdian Masyarakat Jurnal Teknik Sipil
Bartholomeus
Universitas HKBP Nommensen
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Analisis Struktur Portal Bidang Dengan Beban Lateral Menggunakan Metode Elemen Hingga Humisar Pasaribu; Bartholomeus -
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.927

Abstract

It is necessary to carry out a safety and comfort inspection of the existing wharf structure to ensure the facility’s service life. To check the safety and comfort, it is necessary to do a structural analysis. In the world of civil engineering, there are many problems in analyzing structures that need to be analyzed for working loads or assessing the existing wharf structures that are loaded by ship berthing loads and loads on the floor plates. This research is limited by conducting research on port ports that are burdened with berthing loads. The results of this study are deformation at the nodes in the horizontal and vertical directions of the global and local axes. Based on the analysis carried out, a maximum horizontal deformation of 4.363 cm is obtained and is less than 0.5% H (or 7.4 cm) as required in SNI 8460:2017. Thus, it can be concluded that the structure can still bear the impact of a ship weighing 30,000 DWT.
Review Kapasitas Daya Dukung Dan Tinjauan Waktu Pelaksanaan Bore Pile Pada Pembangunan Jembatan Jalan Bebas Hambatan Binjai Pangkalan Brandan Yetty Saragi; Humisar Pasaribu; Tiurma Saragi; Johan Oberlyn Simanjuntak; Bartholomeus Hutagalung; Salomo Simanjuntak
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 5 No 1 (2023): Edisi Agustus 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v5i1.1225

Abstract

In the Sei Wampu Bridge work project, Binjai Pangkalan Brandan carried out bore pile foundation installation work at the A2 foundation point with a total of 21 piles. Review of the bearing capacity of bore pile foundations using Analysis from Meyerhof (1956) and the Converse-Labarre Formula method for the calculation of pile group efficiency. The time of completion of work based on the time schedule plan is 125 calendar days. This research conducted a review using the Critical Chain Project Management (CCPM) method to obtain time efficiency, so that the project can be carried out on time. From the results of analysis and discussion, it was obtained that the largest foundation carrying capacity was the result of laboratory data using method C. Significant differences in results were obtained, especially laboratory data due to the correlation value used in each method. The result of calculating the bearing capacity of the foundation based on the method of Luciano Decourt (1987) using N-SPT data is 287,600.76 kN; Meyerhof's (1956) method using N-SPT data is 265,062.68 kN; a combination of Meyerhof's method (1976), Vesic's method (1977); the combination of the Vesic method (1977), the Coyle and Castello method (1981) and the results of foundation carrying capacity analysis using the All Pile program is 41,159.85 kN. The Critical Chain Project Management method is defined as the longest chain of interrelated events, where the linkage lies in the work or resources that are interconnected with each other, by cutting 50% of the duration of the work and replacing it as a buffer. The time comparison obtained from the calculation results using the CCPM method obtained a time efficiency of 116 days with a work time difference of 7.2% or about 9 days from the existing duration of the previous 125 days, while to compare the results of the CCPM method, calculations were carried out based on realization for 97 days, where the realization results were smaller than using the CCPM method and time schedule plan. Keywords : Bore pile, Carrying capacity, Time review
Pengaruh Model Perletakan Struktur Rangka Baja Sistem Bresing akibat Beban Gempa Bartholomeus, Bartholomeus; Pasaribu, Humisar
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil  Vol. 8 No. 2 (2024)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v8i2.15724

Abstract

Sistem struktur rangka baja bresing konsentris dan eksentris merupakan sistem struktur konstruksi yang termasuk dalam struktur yang tahan terhadap beban gempa. Pada penelitian ini, masing-masing sistem struktur rangka baja bresing konsentris dan eksentris tersebut dianalisis dengan model perletakan yang berbeda-beda mulai dari struktur dengan perletakan sendi, jepit, dan struktur yang menggunakan base isolator. Model struktur juga divariasikan dengan jumlah tingkat yang berbeda yaitu tingkat 3, 4, dan 5, namun dimensi lebar dan panjangnya dibuat sama. Tahap awal yang dilakukan pada penelitian adalah melakukan preliminary design dan pemodelan struktur. Kemudian dilanjutkan dengan penentuan data gempa riwayat waktu di permukaan. Setelah itu, dilanjutkan dengan penentuan parameter base isolator struktur, dan kemudian melakukan analisis struktur. Hasil analisis struktur menunjukkan kenaikan rata-rata periode struktur rangka bresing konsentris (SRBK) dari perletakan sendi dan jepit masing-masing adalah sebesar 2,20 dan 2,32 kali jika menggunakan perletakan base isolator. Sedangkan kenaikan rata-rata periode struktur rangka bresing eksentris (SRBE) dengan perletakan sendi dan jepit masing-masing adalah sebesar 2,07 dan 2,20 kali jika menggunakan perletakan base isolator. Selain itu, penggunaan base isolator pada struktur SRBK dan SRBE dengan jumlah tingkat dan periode struktur yang lebih tinggi akan membuat struktur akan lebih fleksibel dan belum tentu membuat struktur SRBK dan SRBE tahan gempa, namun dapat mengontrol struktur tersebut sehingga terhindar dari periode struktur dalam kondisi resonansi yang berbahaya.
IDENTIFIKASI MASALAH DAN USULAN SOLUSI UNTUK PENINGKATAN KESEJAHTERAAN DESA TOGU DOMU NAULI Pasaribu, Humisar; Bartholomeus; Silalahi, Rohani; Manalu, Indah Sari; Tambunan, Anggie
PROFICIO Vol. 5 No. 2 (2024): PROFICIO : Jurnal Abdimas FKIP UTP
Publisher : FKIP UNIVERSITAS TUNAS PEMBANGUNAN SURAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jpf.v5i2.3568

Abstract

Kuliah Praktek dan Pengabdian Masyarakat di Universitas HKBP Nommensen melibatkan mahasiswa dosen, masyarakat, pemerintah daerah, dan universitas itu sendiri, dengan berbagai manfaat bagi setiap komponen. Bagi mahasiswa melatih daya nalar dan pola pikir, meningkatkan pemahaman tentang masalah masyarakat, menambah wawasan dan pengalaman, serta membangun kreativitas, inovasi, dan kepercayaan diri. Masyarakat mendapatkan pengetahuan baru serta bantuan dalam merencanakan dan melaksanakan program pembangunan. Pemerintah daerah diuntungkan dengan percepatan pelaksanaan program pembangunan melalui bantuan tenaga dan pikiran mahasiswa, khususnya dalam bidang ekonomi, pertanian, dan pendidikan. Bagi Universitas HKBP Nommensen memperkuat kerja sama dengan masyarakat dan berbagai instansi, serta meningkatkan visibilitas dan reputasi universitas di mata masyarakat.
PREDIKSI PENURUNAN TIMBUNAN JALAN : STUDI KASUS: PENANGANAN DENGAN PRE-LOADING DI TEBING TINGGI, SUMATERA UTARA Bartholomeus; Humisar Pasaribu
Jurnal Teknik Sipil Vol 18 No 1 (2022): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v18i1.4592

Abstract

One method of handling soil that can be done to speed up the consolidation process is to add a Pre-Loading embankment on top of the plan embankment. In addition, this handling is also carried out to achieve a reduction by the design load, so that the settlement of embankment after the construction period still meets the required criteria and standards. This study was conducted to obtain a comparison of the prediction of embankment settlement with the empirical method using CPT data and the prediction of settlement using the Asaoka Method. In addition, the results of the consolidation coefficient will also be compared which can be used to determine the right time for Pre-Loading excavation during the construction period. The data used are CPT test data in the field as well as laboratory test data and measurement data for the settlement plate settlement closest to the position of the CPT test. From the analysis carried out, it is obtained that the prediction of decline using the Asaoka method is smaller than the prediction of decline using the empirical method using CPT data. In addition, from the analysis, it was found that at locations HB-04 and SP 70, as well as HB-07 and SP 91, showed laboratory consolidation coefficient values (cv-Lab.) which were close to the consolidation coefficients of the Asaoka Method (cv-Asa.), while in HB -05 and SP 79 and HB-06 and SP 85 show a large difference in values. The average comparison of the cv-Lab. consolidation coefficients and CV-Asa. is 58.5%.
Banana Stem Fiber Potential as an Alternative Natural Geosynthetic Material for Soil Reinforcement and Protection Bartholomeus, Bartholomeus; Purba, Luki Hariando; S P Manurung, Charles; Sihombing, Wanto Poller
Rekayasa Sipil Vol. 19 No. 1 (2025): Rekayasa Sipil Vol. 19 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.01.5

Abstract

Geosynthetics for soil reinforcement and protection require tensile strength and the ability to absorb water. Based on previous studies, it was found that banana stem fibers have both of these mechanical properties of geosynthetics. However, these two strong mechanical properties are not enough for geosynthetic applications. Several other mechanical properties are needed. Therefore, geosynthetic samples were made using spun and woven banana stem fiber materials in this study. The spun was made with different diameters, namely 5 mm, 7.5 mm, and 10 mm, and woven like a mat for one direction of tensile force. Then, additional tests were carried out in addition to tensile strength and water absorption, such as tear strength, puncture strength, and permeability based on permittivity. From the test results, only the woven fabric with a 5 mm spun diameter meets all requirements except for its permittivity value, where the average tensile strength, average tear strength, and average puncture strength obtained for elongation <50% are 32.0 kN/m, 628.7 N, and 1915.8 N, respectively. At the same time, the average water absorption for all diameter variations is 408.07% to 441.86%. So banana stem fibers, especially those with a 5 mm spun diameter, have the potential as an alternative natural geosynthetic material for soil reinforcement and protection by considering the spun fiber woven pattern to improve the permittivity.
Co-Authors Humisar Pasaribu Humisar Pasaribu Johan Oberlyn Simanjuntak Manalu, Indah Sari Pasaribu, Humisar Purba, Luki Hariando S P Manurung, Charles Salomo Simanjuntak Sihombing, Wanto Poller Silalahi, Rohani Tambunan, Anggie Tiurma Saragi Yetty Saragi