利用土壤超額孔隙水壓、PGA、CAV5、與Vs30之關係估算土壤液化機率(2/2)

Project Details

Description

The area around Taiwan is situated in a high-seismicity region. As a result,earthquake research, such as soil liquefaction study, is important to us living onthe island. A recent study pointed out that PGA, the widely-used ground motionintensity measure in earthquake engineering, was not well correlated with porewater pressure excitation in soil due to earthquake shakings. Also, the studyfound that CAV5 was the best ground motion intensity measure for predicting thepore water pressure excitation in soil. Motivated by this innovative study, the keyscope of the proposed research is to investigate the relationship between porewater pressure excitation, PGA, CAV5, and Vs30, via a large amount (around5000) of site response analysis.Utilizing the relationship between Vs30 and CAV5 thresholds (above which soilliquefaction could be induced) from this research, we can estimate theliquefaction probability at any site of interest within a certain period of time (e.g.,within the next 25 years). Such a new approach for liquefaction probabilityassessment is on the basis of CAV5 probabilistic seismic hazard analysis andgeotechnical risk assessment, which is one of the specialized research areas ofPI Wang of National Central University.
StatusFinished
Effective start/end date1/08/2231/07/23

UN Sustainable Development Goals

In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):

  • SDG 11 - Sustainable Cities and Communities
  • SDG 17 - Partnerships for the Goals

Keywords

  • pore water pressure excitation
  • PGA
  • CAV5
  • Vs30
  • liquefaction probability assessment

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