Vol. 31 No. 2 (2024)

Abstract In this article, the design and estimate of the collapse risk of safe-to-fail steel and reinforced concrete (RC) frames due to earthquakes were proposed. The frames are part of nuclear facility buildings, and their failures are to follow the safe-to-fail beam side-sway collapse mechanism. The safe-to-fail was dictated by allowing plastic hinges to form merely in beams and few in columns; no other failure but flexure was tolerated such as shear, local or lateraltorsional buckling. Two types of safe-to-fail frames were studied, one with special moment frame (SMF) and the other with…

Designing infrastructure always involves considering potential loads. Beyond anticipated loads, accidental ones can occur, as with the Pedamaran II bridge in Riau, where a ship collision damaged its foundation, breaking a pile and cracking the pile cap. However, this did not lead to structural failure, even though over 30% of the piles in the group were damaged. Initial hypotheses suggest that the use of bracing in the existing bridge might have helped redistribute forces. A numerical model was created using Opensees to simulate lateral loading on the shaft of an elevated pile cap, comparing…

Performance analysis of road sections is usually carried out on road sections that have the potential for high traffic jams, then perform performance calculations and obtain recommendations for problems on these road sections. However, currently it is still difficult to calculate road performance because it has to be done manually in the calculations and looking for the necessary factors. This research aims to create an application to assist in calculating the performance of Android-based roads more easily and flexibly, this application is called RAKJa (Road Performance Analysis Design) which…

This research is motivated by the frequent occurrence of earthquakes in Indonesia in recent years. Meanwhile, the common practice in determining soil and seismic parameters in Indonesia still heavily relies on various empirical studies. Therefore, this study aims to investigate soil and seismic parameters in Indonesia through the phenomenon of earthquake ground motion amplification, with a case study located at the University of Indonesia (Depok). The research methods employed include the analysis of earthquake recording data in the UI Forest at a depth of 300 meters, one-dimensional modeling…

The dam break method for simulating tsunami surges in the laboratory typically uses a sufficiently long flume, so that the upstream section of the flume, which serves as the reservoir, is also quite long. Using a long reservoir can provide a more extended simulation time for tsunami surge propagation on land, allowing the characteristics of the tsunami surge to be well observed. With a shorter flume, the reservoir space is also limited in length, and the simulation time for tsunami surge propagation is likewise constrained. This study aims to describe the characteristics of the simulated…

Bandung was chosen as a pilot area for Indonesian Mass Transit (MASTRAN) project to increase urban mobility and accessibility. With this MASTRAN project, public transportation nodes should be accessible by all modes, one of which is walking. However, in urban areas in Indonesia, walking activities are still not an option. According to some studies, this is caused by the lack of walking infrastructure and environment feasibility. Therefore, the quality of pedestrian infrastructure and environment must be improved to make these public transportation nodes easy for pedestrians to reach. In this…

Abstrak Kelimpahan kayu salam di pulau Jawa menjadi daya tarik untuk dimanfaatkan sebagai material kosntruksi. Namun belum banyak informasi ilmiah mengenai sifat mekanis kayu salam. Penelitian ini bertujuan untuk mengidentifikasi beberapa sifat dasar utama mekanis kayu salam dengan pengujian destruktif yang mengacu pada ASTM D143 meliputi pengujian lentur statis, tekan sejajar serat, tekan tegak lurus serat, dan geser, serta sifat fisis kayu meliputi kerapatan, berat jenis, serta kadar air kayu salam dengan contoh uji kecil bebas cacat pada kondisi layan basah dan kering udara yang mengacu…

Abstrak Efek hujan dan gempa mempengaruhi stabilitas lereng. Hujan dapat mengakibatkan terjadinya infiltrasi pada lereng yang menyebabkan turunnya tekanan air pori negatif pada lereng dan meningkatkan muka air tanah. Sedangkan gempa akan memberikan beban seismik yang menyebabkan terjadinya deformasi pada lereng. Lereng akan mengalami kondisi yang lebih kritis lagi apabila efek hujan dan gempa dikombinasikan. Penelitian ini bertujuan untuk mengetahui pengaruh hujan yang disusul gempa pada stabilitas lereng tak jenuh. Penelitian ini terdiri dari dua tahap analisis numerik, yaitu analisis…

The handling of retaining walls in the PLTU seawater intake project is a crucial part in maintaining the stability of buildings below ground level. The retaining wall construction is selected based on the depth of excavation, soil type, the height of the Groundwater Table (GWT), and the load being retained. The lateral force calculation method uses Rankine and Coulomb theories with specified soil parameters. The case study was conducted at the seawater intake area of Java 9 & 10 Suralaya PLTU in Suralaya, Cilegon, Banten. The design process involved soil data interpretation, site class…

Human movement in Bandung is unavoidable, with traffic congestion and travel distance making walking a popular alternative. Ease of reaching a location is linked to walking distance and time, and route characteristics affect walking effort and accessibility. Jalan Braga is a high pedestrian area in Bandung. This study assesses walkability to Jalan Braga using Walking permeability, Walking Effort, and Walkability Index methods. Results show the highest walkability permeability values for distance and time are 1.81 on Route 4: Naripan Gas Station and 2.29 on Route 6: Bandung City Square. The…

Abstrak Pembangunan infrastruktur memberi peranan yang sangat penting untuk pertumbuhan ekonomi di Indonesia. Permintaan akan infrastruktur yang tinggi di Indonesia saat ini, tidak menjamin bahwa perusahaan konstruksi di Indonesia dapat bertahan secara finansial maupun non-finansial, karena industri konstruksi rentan akan risiko finansial. Kondisi ini dapat dilihat pada saat pandemi Covid-19 tahun 2020 di mana terjadi penurunan jumlah perusahaan konstruksi sebesar 5,66% karena adanya perlambatan ekonomi. Hal ini sejalan dengan kurang baiknya kinerja keuangan perusahaan konstruksi di Indonesia…

Manajemen komunikasi dianggap sebagai faktor penting yang terkait dengan peningkatan kinerja dalam proyek konstruksi. Penelitian ini untuk mengidentifikasi dan menentukan praktik manajemen komunikasi mana yang berhubungan dengan hasil proyek (project outcome)(HP). Data diperoleh dari 209 kuisioner yang diedarkan pada praktisi konstruksi (kontraktor dan konsultan) di propinsi Sumatera Barat. Kuisioner penelitian terbagi atas dua komponen yaitu pertanyaan berkaitan dengan profil responden dan empat faktor PMK yaitu Teknologi Informasi dan Komunikasi (TIK), Keterampilan dan Kompetensi Komunikasi…

Aerated Autoclaved Concrete (AAC) precast panels are designed for 400kg/m2 loads. Installation of AAC panels is usually added an additional layer on the top surface as protection. The reinforced concrete layer on top of the AAC panels is often defined as super dead load. However theoretically, the additional layer can increase the strength and stiffness of the panels, provided that both layers work in a monolithic composite. Thus, the layer also functions as a structural component. However, it needs research to convince it. The study is used a fullscale experimental method using…

Soft soils with low bearing capacity are a major problem in construction that can lead to failures, such as road damage, building tilts, and bridge collapses. This research aims to improve the bearing capacity of soft soil in Gedebage, Bandung, using a soil stabilization method with Bledug Kuwu mud (LBK) and phosphoric acid solution (LAF). Bledug Kuwu mud was selected due to its chemical composition, which is similar to fly ash and volcanic ash, particularly in terms of SiO₂, Al₂O₃, and Fe₂O₃ content. Phosphoric acid, though rarely used in construction, was chosen for its potential as an…