NCREE Assesses Meishan Fault Surface Displacement Using Deterministic and Probabilistic Methods
Structures · AEC industry
NCREE evaluated surface fault rupture displacement along the Meishan fault using deterministic and probabilistic methods to support seismic assessments for cross-fault infrastructure.
NCREE reported that the Meishan fault experienced magnitude 7.1 earthquakes in 1792 and 1906, crossing major western transit arteries including freeways, TRA, and Taiwan High Speed Rail. The study evaluated surface rupture displacement via deterministic and probabilistic methods, noting significant variations among empirical models and highlighting spatial and parametric uncertainties.
Key takeaways
- Under magnitude 7.1 and 35 km rupture length assumptions, deterministic models show varied median displacements, requiring spatial uncertainty considerations.
- Probabilistic analysis shows wide hazard curves due to limited uplift rate data, requiring risk levels and percentiles tailored to seismic performance goals.
Source：國家地震工程研究中心｜地震工程研究簡訊 Read the original ↗
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