Proposed Oobleck Tuned Liquid Damper (OTLCD) In Nineteen-Storey Hotel and Casino Building in Angeles City, Pampanga

Abstract

The province of Pampanga is located in a region that is earthquake-prone as it is surrounded by faults, notably the West Valley Fault System. Along with this, the location of the locale, Nineteen Storey Hotel and Casino Building in Angeles City, Pampanga, is a high-risk earthquake zone as identified by the Hazard Mapping. This study aims to evaluate and compare the performance of Oobleck Tuned Liquid Column Damper (OTCLD), traditional damping liquids in TCLD, and without TCLD by performing simulations on a scaled model miniature of the locale. The data collected was based on accelerometer readings and trial-and-error experiments. The results revealed that a 2:1 cornstarch-to-water ratio was the right mixture in providing stable and efficient Oobleck. Also, the use of hot water for stabilization was discovered, which improves the settlement and consistency of the mixture. Furthermore, the earthquake simulation showed that buildings with TLCDs have lower peak acceleration than without TLCDs, especially the proposed Oobleck TLCD, which provided the lowest peak acceleration across all levels of intensity of the shake table input. Moreover, the threshold activation of Oobleck has been found at level 2 of the shake table, at which the damping efficiency is at its highest, and its difference with the water-based TLCD is noticeable. Therefore, this study concludes that the proposed Oobleck TLCD at the locale was deemed more effective than using traditional damping fluids, which has the potential to be a ground-breaking discovery in structural applications.