Settlement rate function development based on field instrumentation test and laboratory test

Abstract

In this study, the Settlement Rate Function (SRF) method was developed to account for both primary consolidation and secondary compression, where some types of soft soils exhibit significant secondary compression. The development of the SRF method involved observing the characteristics and behavior of soil settlement to produce accurate predictions of soil settlement. The SRF calculations were then compared with predictions of soil settlement based on the Asaoka method and the one-dimensional consolidation method by Terzaghi. The research results indicate that SRF can predict soil settlement accurately using a 20-day interval and effectively separates the phases of primary consolidation and secondary compression. For soft soils with significant secondary compression, the SRF method can predict soil settlement accurately, provided that secondary compression has occurred by the time soil data is collected and the rate of soil settlement is not fluctuating.