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International Management of Civil Infrastructure

It is a combined lab of hydrologic subjects for long-term water resources management considering climate change impact and structural subjects for bridge health monitoring based on structural dynamics.

Academic Staff

Sunmin KIM

Sunmin KIMAssociate Professor (Graduate School of Engineering)

Research Topics

Hydrologic modeling and model performance improvement, Climate change impact on water resources, Real-time flood forecasting with weather radar observation

Contacts

Room 292, Bldg. C1, Katsura Campus
TEL: +81-75-383-3151
FAX: +81-75-383-3420
E-mail: kim.sunmin.6x@kyoto-u.ac.jp

Kaichun CHANG

ChangJunior Associate Professor (Graduate School of Engineering)

Research Topics

Structural dynamics and its application to structural health monitoring, Vehicle-bridge interactive dynamics, Vibration-based damage detection

Contacts

Room 176, Bldg. C1, Katsura Campus
TEL: +81-75-383-3184
FAX: +81-75-383-3420
E-mail: chang.kaichun.4z@kyoto-u.ac.jp

Research Topics

Climate Change Impact Analysis on Water Resources

Based on General Circulation Model (GCM) output for the future climate projection, changes in heavy rainfall frequency and water resources conditions are analyzed to solve and prevent any water related problems.

Figure1-WRofTone
Figure 1: Future water resource changes in Tone River Basin

Real-time Flood Forecasting with Weather Radar Observation

Weather radar observation data is utilized into a distributed hydrologic model for a short-term rainfall forecasting as well as flood forecasting, and non-structural countermeasures are investigated to decrease the floods risk.

Figure2-FloodForecasting
Figure 2: Real-time flood forecasting system

Bridge Modal Analysis & Damage Detection using Traffic-Induced Vibrations

Bridge damage detection has become an important research and engineering issue in facing the pressing problems of aging bridges. Our study focuses on detecting potential damage in short- and medium-span bridges using their daily traffic-induced vibrations. Effective indicators are extensively investigated, including modal parameters, time-series coefficients, spectral functions and their derivatives.

Figure3-VBDDFigure 3: The concept of using bridge vibrations (left top) to perform modal analysis (left bottom) and damage detection (right).

Vehicle-bridge Interaction & Its Engineering Applications

Vehicle-bridge interaction is the interaction behavior between a bridge structure and vehicles moving on the bridge, which is broadly considered in bridge engineering, seismic design, health monitoring, etc. Our study focuses on its mechanical interpretation and innovative application to bridge dynamic analysis, drive-by inspection, seismic design, and more.

Figure4-VBI
Figure 4: A vehicle-bridge interaction model (top) and a scaled drive-by inspection system (bottom).

Laboratory Website

http://infra.kuciv.kyoto-u.ac.jp/Sunmin.html
http://infra.kuciv.kyoto-u.ac.jp/Chang.html