Studi Perbandingan Kinerja Dan Biaya Gedung Rumah Sakit Husada Utama Dengan Dan Tanpa High Damping Rubber Bearing (HDRB) Bedasarkan Pushover Analysis

Manalu, David Gideon (2022) Studi Perbandingan Kinerja Dan Biaya Gedung Rumah Sakit Husada Utama Dengan Dan Tanpa High Damping Rubber Bearing (HDRB) Bedasarkan Pushover Analysis. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Wilayah Indonesia memiliki tingkat kerawanan gempa yang sangat tinggi karena berada di lokasi pertemuan tiga lempeng tektonik. Hal ini menyebabkan kerusakan sarana dan prasarana akibat gempa yang terjadi sangat mempunyai dampak kerusakan bangunan dan korban jiwa yang sangat signifikan. Salah satu rekayasa atau inovasi tahan gempa yang telah berkembang adalah sistem isolasi dasar yang mempunyai tingkat kinerja yang baik. Prinsip sistem isolasi dasar adalah meningkatkan periode alami struktur dengan memperbesar damping, mengurangi beban gempa yang bekerja pada struktur dengan medium isolator yang dapat berdeformasi ketika gaya lateral yang bekerja melebihi suatu tingkatan gaya tertentu. Salah satu sistem isolasi dasar adalah High Damping Rubber Bearing (HDRB) yang mempunyai disipasi energi beban gempa yang cukup baik. Deformasi yang timbul akibat eksitasi gempa akan terjadi pada medium isolator tersebut, sedangkan struktur di atasnya akan bergerak sebagai struktur yang kaku. Hal ini sangat mempengaruhi tingkat daktilitas struktur dimana simpangan antar lantai akan jauh berkurang sehingga perilaku plastifikasi elemen struktur akan berkurang sehingga kinerja elemen struktural dan fungsi bangunan masih dapat dipertahankan. Pada Tugas Akhir ini, medium isolator, HDRB akan diaplikasikan pada bangunan gedung Rumah Sakit dengan ketinggian 48.60 m yang terletak pada Tanah Sedang yang didesain pada Kategori Desain Seimik D (KDS D). Bangunan tersebut akan dianalisis terhadap sistem pondasi bangunan terjepit dengan sistem isolasi dasar untuk mengetahui perbandingan kinerja dan biaya konstruksi bangunan. Metode analisis menggunakan Standar Perencanaan Ketahanan Gempa untuk Struktur Bangunan Gedung dengan SNI 1726;2019 (ASCE 7 16) dan Tata Cara Perencanaan Struktur Beton dengan SNI 2847:2019 (ACI 318-19M). Dari hasil analisis, sistem isolasi dasar dapat mereduksi gaya geser hingga 38,51% arah X dan 34,98% arah Y, mereduksi story drift hingga 70%, serta memperpanjang periode hingga 2,5 kali dari sistem pondasi terjepit. Untuk gaya geser yang sama, level kinerja sistem isolasi terjepit masih pada level Immidiate Occupancy (IO) untuk shear strain < 100% sedangkan sistem pondasi terjepit sudah masuk pada level Life Safety (LS). Dari segi biaya, dimensi komponen struktur bangunan dapat direduksi sehingga biaya konstruksi komponen struktur dapat berkurang hingga Rp 3.745.200.000,00 atau sekitar 37,96% terhadap biaya konstruksi komponen struktur bangunan gedung rumah sakit. Hal ini dikarenakan terdapat reduksi dimensi pada komponen kolom dan balok yang berpengaruh terhadap berat struktur sehingga gaya geser yang bekerja pada struktur juga berkurang. Selain itu, sistem isolasi dasar juga mengurangi potensi kerusakan asset peralatan rumah sakit yang sensitive terhadap gerakan yang ditimbulkan akibat gaya gempa.
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The Indonesian region has a very high level of earthquake vulnerability because it is at the confluence of three tectonic plates. This caused damage to facilities and infrastructure due to the earthquake which had a very significant impact on building damage and fatalities. One of the earthquake-resistant engineering innovations that have been developed is an isolation system which has a better level of performance. The principle of the isolation system is to increase the natural period of the structure by increasing the damping and reducing the seismic load acting on the structure with the insulating medium which can deform when the lateral force acting exceeds a certain level of force. One of the basic isolation systems is the High Damping Rubber Bearing (HDRB) which has a moderately good seismic load energy dissipation. Deformation occurring from earthquake excitation will occur in the insulating medium, while the structure above it will move as a rigid structure. This greatly affects the level of structural ductility where the drift between floors will be much reduced so that the plastification behavior of structural elements will be reduced so that the performance of structural elements and building functions can still be maintained. In this Final Project, the insulator medium, HDRB will be applied to a hospital building with a height of 48.60 m which is located on Medium Soil and is designed in Seismic Design Category D. The building will be analyzed against a fix-based system with an isolation system to determine a comparison of the performance and cost of building construction. The analytical method uses the Earthquake Resistance Planning Standards for Building Structures with SNI 1726;2019 (ASCE 7-16) and Procedures for Planning Concrete Structures with SNI 2847:2019 (ACI 318-19M). From the results of the analysis, the base isolation system can reduce shear forces by up to 38.51% in the X direction and 34.98% in the Y direction, reduce story drift by up to 70%, and extend the period of up to 2.5 times of the fix-based system. For the same shear force, the performance level of the pinned isolation system is still at the Immediate Occupancy (IO) level for shear strain <100%, while the fix-based system is already at the Life Safety (LS) level. In terms of costs, the dimensions of the building's structural components can be downsized so that the construction costs of the structural components can be reduced by up to IDR 3,745,200,000.00 or around 37.96% of the construction costs of a hospital building's structural components. This is because there is a reduction in the dimensions of the column and beam components which affects the weight of the structure so that the shear force acting on the structure is also reduced. In addition, the basic isolation system also reduces the potential for damage to hospital equipment assets that are sensitive to movement caused by earthquake forces.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Earthquake Load, Engineering, Isolation System, HDRB
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	David Gideon Hans Derian Manalu
Date Deposited:	01 Feb 2023 01:16
Last Modified:	01 Feb 2023 01:16
URI:	http://repository.its.ac.id/id/eprint/95908

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