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Studi Pengaruh Kenaikan Kekakuan Metallic Damper Terhadap Respon Seismik Struktur Rangka Baja dengan Energi Redaman Tambahan Peredam ADAS (Added Damping and Stifness) Murdiansyah, Lukman; Setio, Herlien D.
Jurnal Teknik Sipil Vol 21, No 1 (2014)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.385 KB)

Abstrak. Manfaat alat pendisipasi energi tambahan dikenal baik dalam bidang rekayasa struktur untuk mendisipasi energi akibat gempa. Perilaku seismik struktur rangka baja dengan energi redaman tambahan ADAS dijadikan sebagai konsentrasi utama pada penelitian ini. Tiga model sampel ADAS didisain dan diuji secara eksperimental untuk memperoleh metallic yielding damper model baru. Tujuan utama studi ini adalah mengetahui rasio kekakuan optimum ADAS (KD) terhadap kekakuan struktur tiap lantai (KS). Program PERFORM 3D dan dua catatan gempa (El Centro dan San Fernando) digunakan untuk mengetahui respon seismik struktur. Metode analisis yang digunakan adalah analisis riwayat waktu nonlinear. Rasio energi histeresis struktur terhadap energi input yang dikerjakan gempa ke struktur juga dibahas pada studi ini. Hasilnya, untuk menaikkan kapasitas dan mengurangi kerusakan struktur akibat gempa sebanyak mungkin bisa dilakukan dengan menaikkan kekakuan peredam tambahan ADAS.Abstract. The benefit of extra energy absorber is well known in the field structural engineering to dissipate energy caused by earthquakes. Seismic behaviors of steel frame structure with additional damping energy ADAS are the main concentration in this study. Three samples ADAS models were designed and tested eksperimentally to obtain a new model of metallic yielding dampers. The main objective of this study is to determine the optimum stiffness ratio of ADAS (KD) to storey stiffness of stuctures (KS). PERFORM 3D software and two earthquake records (El Centro and San Fernando) were used to determine the seismic responses of structure. The analytical method used is the nonlinear time history analysis. The ratio of hysteretic energy of the structure to earthquake input energy is also discussed in this study. The result, increasing capacity and reducing structural damage caused by the earthquake as much as possible can be conducted by increasing additional ADAS damper stiffness.

INSPEKSI VISUAL RETAKAN PADA ATAP BETON GEDUNG THARIQ BIN ZIYAD Zaki, Ahmad; Murdiansyah, Lukman
RACIC: Jurnal Teknik Sipil Universitas Abdurrab Vol 3 No 01 (2018): Terbitan Kelima Bulan Juni 2018
Publisher : Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.39 KB)

Banyak laporan menyatakan betapa seriusnya masalah yang berkaitan dengan retakan yang terjadi pada struktur beton bertulang di seluruh dunia. Yang pada akhirnya dapat menyebabkan kerusakan dan kehancuran pada struktur beton bertulang. Retakan adalah kerusakan pada struktur beton yang memerlukan perbaikan atau penggantian. Analisa tingkat kerusakan seawal mungkin atas retakan yang terjadi pada struktur beton bisa mengurangi dampak yang lebih besar dan dapat mengefesienkan biaya perbaikan pada struktur beton tersebut. Oleh karena itu, diperlukan suatu metode pengujian tanpa kerusakan (non-destructive testing (NDT) method) pada struktur beton tersebut, yaitu: teknik inspeksi visual (visual inspection technique). Dalam penelitian ini, inspeksi visual dilakukan untuk menilai retakan pada atap beton gedung Thariq bin Ziyad, Universitas Abdurrab.

INSPEKSI VISUAL RETAKAN PADA ATAP BETON GEDUNG THARIQ BIN ZIYAD Ahmad Zaki; Lukman Murdiansyah
Racic : Rab Construction Research Vol 3 No 01 (2018): Terbitan Kelima Bulan Juni 2018
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.39 KB)

Banyak laporan menyatakan betapa seriusnya masalah yang berkaitan dengan retakan yang terjadi pada struktur beton bertulang di seluruh dunia. Yang pada akhirnya dapat menyebabkan kerusakan dan kehancuran pada struktur beton bertulang. Retakan adalah kerusakan pada struktur beton yang memerlukan perbaikan atau penggantian. Analisa tingkat kerusakan seawal mungkin atas retakan yang terjadi pada struktur beton bisa mengurangi dampak yang lebih besar dan dapat mengefesienkan biaya perbaikan pada struktur beton tersebut. Oleh karena itu, diperlukan suatu metode pengujian tanpa kerusakan (non-destructive testing (NDT) method) pada struktur beton tersebut, yaitu: teknik inspeksi visual (visual inspection technique). Dalam penelitian ini, inspeksi visual dilakukan untuk menilai retakan pada atap beton gedung Thariq bin Ziyad, Universitas Abdurrab.

Studi Pengaruh Kenaikan Kekakuan Metallic Damper Terhadap Respon Seismik Struktur Rangka Baja dengan Energi Redaman Tambahan Peredam ADAS (Added Damping and Stifness) Lukman Murdiansyah; Herlien D. Setio
Jurnal Teknik Sipil Vol 21 No 1 (2014)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2014.21.1.4

Abstrak. Manfaat alat pendisipasi energi tambahan dikenal baik dalam bidang rekayasa struktur untuk mendisipasi energi akibat gempa. Perilaku seismik struktur rangka baja dengan energi redaman tambahan ADAS dijadikan sebagai konsentrasi utama pada penelitian ini. Tiga model sampel ADAS didisain dan diuji secara eksperimental untuk memperoleh metallic yielding damper model baru. Tujuan utama studi ini adalah mengetahui rasio kekakuan optimum ADAS (KD) terhadap kekakuan struktur tiap lantai (KS). Program PERFORM 3D dan dua catatan gempa (El Centro dan San Fernando) digunakan untuk mengetahui respon seismik struktur. Metode analisis yang digunakan adalah analisis riwayat waktu nonlinear. Rasio energi histeresis struktur terhadap energi input yang dikerjakan gempa ke struktur juga dibahas pada studi ini. Hasilnya, untuk menaikkan kapasitas dan mengurangi kerusakan struktur akibat gempa sebanyak mungkin bisa dilakukan dengan menaikkan kekakuan peredam tambahan ADAS.Abstract. The benefit of extra energy absorber is well known in the field structural engineering to dissipate energy caused by earthquakes. Seismic behaviors of steel frame structure with additional damping energy ADAS are the main concentration in this study. Three samples ADAS models were designed and tested eksperimentally to obtain a new model of metallic yielding dampers. The main objective of this study is to determine the optimum stiffness ratio of ADAS (KD) to storey stiffness of stuctures (KS). PERFORM 3D software and two earthquake records (El Centro and San Fernando) were used to determine the seismic responses of structure. The analytical method used is the nonlinear time history analysis. The ratio of hysteretic energy of the structure to earthquake input energy is also discussed in this study. The result, increasing capacity and reducing structural damage caused by the earthquake as much as possible can be conducted by increasing additional ADAS damper stiffness.

PENGARUH INTERAKSI TANAH-STRUKTUR PADA TANAH LUNAK TERHADAP DILATASI DARI DUA BANGUNAN TINGGI AKIBAT GEMPA Sari, Desnila; Murdiansyah, Lukman; Yurisman, Yurisman; Guspari, Oni
Jurnal Ilmiah Poli Rekayasa Vol 18, No 2 (2023): April
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.18.2.244

Earthquakes that occur in buildings can lead to collision force with the next building if the initial gap between the two buildings is not sufficient for its free vibration responses. Collisions can cause amplification of the internal forces in the structural elements and the collision force on the contact zone is usually not considered in the initial design so that it can lead to damage and collapse of buildings. This study aime to determine the effect of Soil-Structure Interaction in the dilatation of two structures in soft soil with consideration of the collision to the next building. The structure is modeled as a structural system with multi degree of freedom (MDOF). The upper structure is considered linear elastic model and does not have damping as well as the lower structure (foundation). The collision can only occur on the floor level of the two buildings in which the contact zone is modeled as an elastic element. The rheological model for Soil-Structure Interaction are taken as a horizontal spring and a rotational spring. Structural dynamic equations was solved by using the Houbolt integration method. The resolution of numerical program was solved by the Matlab software. The results of study showed that soil-strucutre interaction increases the relative displacement under the condition of initial distance (gap) between the two buildings was reduced.

Conceptual Design of Pedestrian Overpasses Bridge for Vertical Evacuation from Tsunami (POBET) in Padang City – West Sumatra Syukri, Andi; yaldi, Gusri; Hamid, Desmon; Murdiansyah, Lukman; Rozaan, Aufaa; Roza, Afrina
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 2 (2017): Oktober 2017
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Padang City, the most populated city in West Sumatra, is considered to have one of the world’s highest tsunami risks due to its high and close offshore thrust-fault seismic hazard, its flat terrain, and its dense population, which is mostly distributed along the coast. Current preparation for a tsunami in Padang focuses on developing early warning systems, planning evacuation routes, conducting evacuation drills, and educating the public about its tsunami risk. These are necessary, but insufficient, steps. The natural warning in Padang—strong earthquake shaking that lasts over a minute—will be the first and best indicator that a tsunami is likely to strike. It is estimated that even if evacuation begins immediately after the earthquake shaking stops, more than 100,000 inhabitants of Padang will be unable to reach high ground in less than 30 minutes—the expected time between the end of the earthquake shaking and the arrival of the tsunami wave at the shore. Based on Evaluation of Tsunami Evacuation Infrastructure for Padang, West Sumatra, Indonesia (Veronica, et.al: 2011) concluded, based upon extensive fieldwork, that Padang’s existing tsunami evacuation capacity is grossly inadequate, and that tsunami evacuation structures are essential to protect the people of Padang. To maximize their impact and effectiveness, those tsunami evacuation structures should be locally-appropriate, feasible to build and maintain, and easy to replicate. The M7.6 earthquake that struck Padang on September 30, 2009 confirmed this critical need for tsunami evacuation infrastructure. Although the earthquake did not generate a tsunami, it did cause the collapse of many buildings that had previously been identified as satisfactory evacuation structures. The earthquake also triggered massive traffic jams, stranding people in harm’s way and demonstrating why Padang needs structures that enable more people to evacuate-in-place. Finally, it needs to design new structures to accommodate people to evacuate immediately in place. Pedestrian Overpasses Bridge for Vertical Evacuation from Tsunami (POBET) will work effectively for evacuees who get traffic jam during the tsunami inundated elapsed critical hours. The most reason for POBET need to be design is a prototype for the government to combine pedestrian overpasses bridge with vertical evacuation from tsunami. These evacuation infrastructures consider about less for land use, easy to reach, compatible for any infrastructure purposes. Rely on budget and planning, POBET would design with a smallest amount budget and effortless construction process. It can be replicate by the local government to build in any place in Padang City.

Analisis I-Girder Baja Pada Jembatan Lengkung Horizontal Menggunakan Standar AASHTO LRFD 2012 MT, Mukhlis; Hamid, Desmon; Murdiansyah, Lukman; Army, B; Mucni, Rifki
Jurnal Ilmiah Rekayasa Sipil Vol 16 No 2 (2019): Oktober 2019
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Horizontal curved bridge is a bridge with a cross section of a curved steel I-girder that requires complex geometry and has certain requirements. which different between a straight bridge with a horizontal curved bridge that is in addition to the vertical bending effect and the shear effect is also influenced by torsional effects, lack of stability, and special constructive attention, and consideration of system behavior in the analysis. The purpose of writing this final project is to be able to do the bridge structure modeling using Midas Civil software, to design the structure of the horizontally curved steel I-girder bridge, and Obtaining the dimensions of I-Girder steel horizontally curved bridge that is able to resistance the effects of curvature and loads that work in accordance with predetermined conditions, and know the behavior of elements from horizontally curved steel I-Girder bridge. This design refers to AASHTO LRFD 2012 and design carried out namely three continuous span (42 m + 55 m + 42 m) by using two pieres. the dimensions of steel I-girder with 2000 mm girder height of 20 mm body thickness, top flange width 500 mm thickness 25 mm, and bottom flange width 600 mm thickness 40 mm. From the results of the girder design there are some of conditions which can be said to be extreme because comparison between the compressive stress with capacity almost the same, that is 99.8% at the inertia-x on maximum positive moment fatigue condition, 95% at the inertia-y on maximum positive moment strength lime state condition, and 98% the maximum positive moment Constructibility on torsion. This proves that every agreed has extreme. However, this value is still within safe limits in accordance with the standards used.

Pengaruh Substitusi Abu Sekam Padi Pada Semen Terhadap Kuat Lentur Beton Mutu Tinggi: The Influence Of Rice Husk Ash Substitution On Cement Regarding The Flexural Strength Of High-Strength Concrete Murdiansyah, Lukman; Archenita, Dwina; Afriyani, Sicilia; Effendi, Effendi; Eldiswari, Zikra; Sekta, Masri Juang
Media Ilmiah Teknik Sipil Vol. 13 No. 1 (2025): Media Ilmiah Teknik Sipil
Publisher : Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v13i1.8556

High-strength concrete is a crucial construction material in modern infrastructure development. It involves replacing some conventional raw materials with environmentally friendly alternatives to enhance concrete quality. Rice husk ash (RHA) is an agricultural waste that contains natural pozzolanic materials capable of improving the mechanical properties and strength of concrete. The use of rice husk ash (RHA) in high-strength concrete mixtures has the potential to reduce cement consumption and enhance crack resistance. The aim of this research is to investigate the effect of substituting cement with rice husk ash and the addition of superplasticizer on the flexural strength of concrete. The target concrete strength is 4.50 MPa, with rice husk ash substitution rates of 5%, 10%, and 15% of the cement weight. This study found the flexural strength of the concrete at 28 days to be 4.71 MPa for the 5% substitution, and 3.79 MPa for both the 10% and 15% substitutions.

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