Agraprana, Andhika (2020) Pengaruh Eksentrisitas Satu Sisi Bracing Diagonal pada Struktur Portal akibat Beban Siklik terhadap Hubungan Tegangan-Regangan Struktur. Sarjana thesis, Universitas Brawijaya.
Abstract
Indonesia memiliki tingkat ancaman gempa bumi yang sangat tinggi. Banyak bangunan di Indonesia runtuh akibat gempa karena strukturnya tidak tahan terhadap gempa. Salah satu inovasi untuk meningkatkan kekuatan struktur dalam menahan gempa adalah dengan menambahkan bracing. Pada umumnya bracing terhubung di titik pertemuan antara kolom dan balok, yang disebut sebagai bracing tanpa eksentrisitas (CBF). Namun, sistem bracing CBF terkadang sulit diterapkan pada sebuah struktur karena faktor arsitektur. Maka, pemasangan bracing dengan eksentrisitas (EBF) perlu dilakukan. Sehingga, diperlukan penelitian lebih lanjut untuk mengetahui efektifitas bracing yang memiliki eksentrisitas. Dalam penelitian ini dibuat tiga benda uji portal. Benda uji portal berupa portal beton sederhana yang terdiri dari balok, kolom, dan bracing diagonal. Benda uji portal memiliki tinggi 70 cm dan panjang 100 cm. Bracing pada benda uji portal pertama tidak memiliki eksentrisitas. Sedangkan, benda uji lainnya diberikan eksentrisitas pada sisi atasnya masing-masing 15 cm, dan 30 cm. Benda uji portal dibuat dengan tulangan utama Ø6 dan sengkang Ø4-150. Pengujian dilakukan dengan menggunakan alat load cell untuk memberikan beban siklik lateral, LVDT untuk memperoleh nilai defleksi, dan strain gauge untuk memperoleh nilai regangan. Hasil penelitian ini diketahui bahwa portal tanpa eksentrisitas memiliki tegangan maksimum yang paling besar diantara dua portal yang lainnya, dengan nilai tegangan beton dan baja masing-masing 181,72 N/mm2 dan 181,67 N/mm2. Regangan maksimum benda uji non-eksentris untuk beton dan baja masing-masing 172 x 10-6 dan 1160 x 10-6. Sedangkan benda uji dengan eksentrisitas 15 cm masing-masing 149 x 10-6 dan 1099 x 10-6. Beban maksimum dari benda uji non-eksentris sebesar 4410 kg, benda uji dengan eksentrisitas 15 cm sebesar 3300 kg, sedangkan untuk benda uji dengan eksentrisitas 30 cm memilki beban maksimum sebesar 1600 kg.
English Abstract
Indonesia has very high earthquake threat level. A large number of buildings have collapsed caused by the earthquake due to the fact that the building structures do not restrain the earthquake. One of the innovations to improve the structural strength to restrain the earthquake is to add bracing. As a rule, the bracing is connected in the intersection between column and beam called concentrically braced frame (CBF). However, CBF bracing system is sometimes difficult to be implemented on a structure because of the architectural factor. Then, eccentrically braced frame (EBF) installation is necessary to be done. The further research, therefore, is required to do in order to find out the bracing effectiveness owning the eccentricity. In this research, three portal test objects were made. The portal test objects were simple concrete portals which consisted of beam, column, and diagonal bracing. The portal test objects were 70 cm in height and 100 cm in length. The bracing on the first portal test object did not have eccentricity, while on the other test portal objects were given eccentricity on the upper sides, each of which was 15 cm and 30 cm. The portal test objects were made from Ø6 main reinforcement and Ø4-150 stirrups. The testing was done by using the load cell device to give the lateral cylic load, LVDT to obtain the deflection value, and the strain gauge device to obtain the strain value. From the research result, it was found out that the portal without eccentricity had the bigger maximum stress than the other two portals, with the stress value of concrete and steel was 181,72 N/mm2 and 181,67 N/mm2 each. The maximum strain of the noneccentric test object for concrete and steel was 172 x 10-6 and 1160 x 10-6 each. On the other hand, the test object with 15 cm eccentricity was 149 x 10-6 and 1099 x 10-6 each. The maximum load of non-eccentric test object was 4410 kg; the test object with 15 cm eccentricity was 3300 kg, while the test object with 30 cm eccentricity had a maximum load in the amount of 1600 kg.
Other obstract
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Item Type: | Thesis (Sarjana) |
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Identification Number: | 0520070049 |
Uncontrolled Keywords: | Portal, Bracing, Tegangan-Regangan, Beban Siklik Lateral , Portal, Bracing, Stress-Strain, Lateral Cyclic Load |
Subjects: | 500 Natural sciences and mathematics > 555 Earth sciences of Asia > 555.220 287 Seismography |
Divisions: | Fakultas Teknik > Teknik Sipil |
Depositing User: | Users 31 not found. |
Date Deposited: | 01 Feb 2021 21:13 |
Last Modified: | 07 Oct 2024 03:18 |
URI: | http://repository.ub.ac.id/id/eprint/182214 |
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