Karakteristik Mikromekanik Low-grade Rubber Bearing Sebagai Isolator Pada Hunian Tingkat Rendah

Keywords: base isolator, LGRB, tegangan, mikromekanis, steel shim

Abstract


Base isolator berbasis karet merupakan salah satu pendekatan yang popular dalam menahan goncangan gempa pada struktur. Pemanfaatan low-grade rubber bearing masih sangat jarang sehubungan dengan kemampuan mekanis material LGRB yang ada. Penelitian ini menginvestigasi perilaku tiga model base isolator berbentuk kubus, silinder dan silinder berlapis plat baja/steel shim. Ketiga model isolator, CUB20, CYL20 dan SHA diberi beban vertikal dan horisontal pada pelat pembebanan setebal 25 mm dengan tumpuan jepit pada pelat pembebanan bagian bawah kemudian dianalisis perilaku tegangan mikromekanis, regangan ekivalen dan tegangan geser menggunakan FEM. Karakteristik isolator LGRB ditinjau di sepuluh titik tinjau pada permukaan model sepanjang ketinggian karet isolator. Hasil uji parametrik dengan aplikasi ANSYS menunjukkan bahwa model isolator karet berlapis steel shimmempunyai kapasitas dan kemampuan yang lebih baik diikutimodel silider dan model kubus. Penempatan steel shim dapat menstabilkan pengaruh besarnya beban luar pada karet isolator sehingga dapat memberikan respon yang lebih memadai apabila diaplikasikan pada struktur dalam menahan beban gempa.

Author Biography

Sandy I. Yansiku, Universitas Nusa Nipa

SINTA Author ID: 6666922
Scopus ID57195917877
Google Scholar ID: VOeoKGsAAAAJ

References

BAAP-APBN 2018, 'Pembangunan Perumahan', SetJen DPR RI, Jakarta.

Fujita, T 1991, 'Seismic Isolation Rubber Bearings for Nuclear Facilities', Nuclear Engineering and Design, vol. 127, no. 3, pp. 379-391.

Ghodke, RB & Admane, SV 2015, 'Effect Of Base-Isolation For Building Structures', International Journal of Science, Engineering and Technology Research, vol. 4, no. 4, pp. 971-973.

Govardhan & Paul, DK 2016, 'Effect of Lead in Elastomeric Bearings for Structures Located in Seismic Region', Procedia Technology, vol. 25, 2016/01/01/, pp. 146-153.

Mises Stress and the Yield Criterion?', SIMSCALE, June, 12, 2018, <https://www.simscale.com/blog/2017/04/von-mises-stress/>.

Li, Y, Zong, Z, Huang, X, Xia, J & Liu, L 2017, 'Experimental study on mechanical properties of high damping rubber bearing model', IOP Conference Series: Earth and Environmental Science, vol. 61, 2017/04, p. 012105.

Minowa, C, Masaki, N & Iiba, M 2000, 'Large Scale Dynamic Failure Test of Low Damping Rubber Base Isolators', in 12th World Conference on Earthquake Engineering, Auckland, New Zeland.

Oh, J, Jang, C & Kim, JH 2016, 'Seismic Behavior Characteristic of High Damping Rubber Bearing Through Shaking Table Test', Journal of Vibroengineering, vol. 18, no. 3, pp. 1591-1601.

Salic, RB, Garevski, MA & Milutinovic, ZV 2008, 'Response of Lead Rubber Bearing Isolated Structure', in 14th World Conference on Earthquake Engineering, Beijing, China.

Sugihardjo, H, Tavio, T & Lesmana, Y 2018, 'FE Model of Low Grade Rubber for Modeling Housing’s Low-Cost Rubber Base Isolators', Civil Engineering Journal, vol. 4, no. 2, p. 24.

Tian, XM & Lu, M 2008, 'Design of Base-Isolated Structure with Rubber-Bearing', in 14th World Conference on Earthquake Engineering, Beijing, China.

Weisman, JE 2010, 'Stability of Low-damping Rubber and Lead-rubber Seismic Isolation Bearings ', College of ENgineering, Master of Science thesis, Pennsylvania State University, USA.

Yansiku, S. I. (2017). Perilaku Struktur Dual Sistem Penahan Beban Gempa Akibat Ketidakberaturan Horisontal Struktur Gedung Bertingkat. Siartek, 3(2). Retrieved from: https://ejournalnusanipa.com/siartek/index.php/jsiartek/article/view/23

Yansiku, S. I. (2017). Impact of artificially seismic loading on the response of building structure in various site classifications. Journal of King Saud University-Engineering Sciences, 29(4), 302-312. doi: 10.1016/j.jksues.2017.06.002

Published
2018-10-25
Section
Teknik Sipil