Estimating of Post-liquefaction Settlement Based on SPT Data in Klaten Regency, Central Java

Abstract A strong earthquake with Mw 6.3 occurred in Yogyakarta on May 27, 2006, causes of damage to DI Province and Central Java Province, including Klaten Regency. The geological stratigraphy consists volcanic breccias, lava tuff this area generally shallow groundwater levels, which can trigger liquefaction. potential liquefaction analysis study uses Standard Penetration Test (SPT) data carried out 3 districts, namely Delanggu, Polanharjo, Karanganom District Idriss-Boulanger method. peak ground acceleration was calculated by Next Generation Attenuation (NGA) method using obtained from the Pacific Earthquake Engineering Research (PEER) Center database. that is at least 0.29 g bedrock. All areas indicated varying depths. Polanharjo most susceptible proposed Zhang estimates post-liquefaction settlement 3.3 – 42.4 cm (light extensive damage) Based results, further mitigation studies are needed Regency minimize will occur due This required planning construction toll road