Studi Geotechnical Seismic Isolation (GSI) Menggunakan Campuran Pasir dan Limbah Karet sebagai Perlindungan Gempa pada Bangunan Tingkat Rendah

Rifliansah, Wildan Pramadistya (2024) Studi Geotechnical Seismic Isolation (GSI) Menggunakan Campuran Pasir dan Limbah Karet sebagai Perlindungan Gempa pada Bangunan Tingkat Rendah. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada beberapa dekade terakhir terdapat penelitian terkait penggunaan Geotechnical Seismic Isolation (GSI) dengan memanfaatkan pasir yang dicampur dengan butiran karet daur ulang / Rubber-Sand Mixture (RSM) untuk melindungi struktur bangunan terhadap gempa. Teknologi ini tergolong lebih ekonomis dan ramah lingkungan sehingga dapat menjadi alternatif solusi sebagai teknologi pelindung bangunan tingkat rendah terhadap gempa.
Pada studi ini dilakukan simulasi struktur bangunan dinding bata model Concrete Damage Plasticity (CDP) terhadap rekaman data gempa. Adapun variasi studi parametrik yang dilakukan yakni sistem perletakan, jumlah lantai pada struktur, dan variasi rekaman data gempa. Prosentase karet yang digunakan pada RSM yakni sebesar 10% dari berat kering tanah pasir. Adapun parameter alami dari RSM didapat melalui pengujian eksperimental yang kemudian parameter RSM tersebut akan dijadikan input pada program bantu untuk melakukan pemodelan dan simulasi pada studi parametrik. Respon dinamik struktur yang akan diteliti antara lain periode fundamental struktur, drift puncak, akselerasi puncak, dan pola kerusakan struktur.
Dari hasil analisis ditemukan bahwa sistem SSI dan GSI-RSM tidak memiliki pengaruh yang signifikan terhadap perubahan periode fundamental struktur. Terkait respon puncak drift, didapati sistem SSI meningkatkan respon puncak drift dan sistem GSI-RSM juga meningkatkan efek drift yang terjadi namun tidak signifikan. Pada respon akselerasi struktur, secara umum efek GSI-RSM dapat mereduksi respon akselerasi struktur hingga 16.15% pada struktur dinding bata 1 lantai dan 28.55% pada struktur dinding bata 2 lantai. Kerusakan yang terjadi pada struktur dinding bata juga teramplifikasi akibat efek SSI namun berkurang akibat adanya GSI-RSM. Penambahan kedalaman lapisan RSM pada sistem GSI-RSM tidak memiliki efek yang signifikan terhadap semua respon dinamik struktur.

Kata Kunci: Bangunan tingkat rendah, Gempa, Geotechnical Seismic Isolation, Rubber-Sand Mixture, Struktur Dinding Bata
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In the last few decades, there has been research related to the use of Geotechnical Seismic Isolation (GSI) by using sand mixed with recycled rubber granules / Rubber-Sand Mixture (RSM) to protect building structures against earthquakes. This technology is considered more economical and environmentally friendly so it can be an alternative solution as a technology to protect low-rise buildings against earthquakes.
In this study, masonry wall structure using Concrete Damage Plasticity (CDP) model was simulated by earthquake time history data. The variations of parametric at this study including the restraint system, the number of floors in the structure, variations of earthquake time history data, and variations of RSM depth. The percentage of rubber used in RSM is 10% of the sand-soil dry density. The natural parameters of the RSM were obtained through experimental testing and then the RSM parameters will be used as input to an finite element program. The dynamic response of the structure that will be studied includes the fundamental period of the structure, peak drift, peak acceleration, and structural damage patterns.
From the analysis results it was found that the SSI and GSI-RSM systems did not have a significant influence on changes in the fundamental period of the structure. Regarding the peak drift response, it was found that the SSI system increased the peak drift response and the GSI-RSM system also increased the drift effect that occurred but was not significant. In terms of structural acceleration response, in general the GSI-RSM effect can reduce the structural acceleration response by up to 16.15% in a 1-story masonry wall structure and 28.55% in a 2-story masonry wall structure. The damage that occurs to masonry wall structures is also amplified due to the SSI effect but reduced due to the presence of GSI-RSM. Increasing the depth of the RSM layer in the GSI-RSM system does not have a significant effect on all dynamic responses of the structure.

Keywords: Low-Rise Buildings, Earthquake, Geotechnical Seismic Isolation, Rubber-Sand Mixture, Masonry Wall Structure

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Bangunan tingkat rendah, Gempa, Geotechnical Seismic Isolation, Rubber-Sand Mixture, Struktur Dinding Bata, Low-Rise Buildings, Earthquake, Geotechnical Seismic Isolation, Rubber-Sand Mixture, Masonry Wall Structure
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA355 Vibration. T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Wildan Pramadistya Rifliansah
Date Deposited:	04 Aug 2024 10:31
Last Modified:	04 Aug 2024 10:31
URI:	http://repository.its.ac.id/id/eprint/110208

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