Evaluasi Potensial Likuifaksi Akibat Gempa Bumi Tektonik Lapisan Pasir Jenuh Air dengan Metode Shaking Table (Studi Kasus pada Lapisan Pasir Kali Krasak Yogyakarta)

A. Halim Hasmar

Abstract

Liquefaction was lost of soils bearing capacity of satturated sand soils, caused by shear wave at earthquakes. Evalution of potential liquefaction could using by in-situ test and by laboratory test. The laboratory test of experiment shaking table was model of shear wave caused by earthquakes, for evaluation potential liqiufaction of the satturated sand soil. Experimental test of Kali Krasak satturated sand soils with Yogyakarta earthquaked by 6 of Richter scales was indenticaled with 10 cycles dy-namics load, by 7 of Richter scales was indenticaled with 20 cycles dynamics load and by 8 of Richter scales was indenticaled 30 cycles dynamics load. Kali Krasak sand is loose sand, with specific gravity 2,71 and relative density 9,32 percent and also weigh of volume 1,745 ton/m3. Shaking table test by 10 cycles dinamics load, satturated sand deposit Kali Krasak not potential to liquefaction, and by 20 cycles and 30 cycles are potential to liquefaction.

keyword : likuifaksi, jenuh air, beban dinamik, siklik



Publisher:

PPST DPPM Universitas Islam Indonesia

ISSN: 1410-2315