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RISStructural Identification of a Nonproportionally Damped System and Its Application to a Full-Scale Suspension Bridge
Publisher: American Society of Civil Engineers
Abstract: Ambient vibration measurement is an important tool to evaluate the integrity of in-service structures. The writers apply a new structural identification method to ambient vibration data taken from a full-scale suspension ...
Reproduction of Cable-Stayed Bridge Seismic Responses Involving Tower–Girder Pounding and Damage Process Estimation for Large Earthquakes
Publisher: American Society of Civil Engineers
Abstract: Tower–girder transverse pounding was observed on the Yokohama Bay Bridge wind tongue during the 2011 Great East Japan Earthquake. Damage to the wind tongue due to pounding can potentially lead to damage of other members. ...
Displacement Estimation of a Nonlinear SDOF System under Seismic Excitation Using an Adaptive Kalman Filter
Publisher: ASCE
Abstract: A displacement estimation method for a nonlinear single-degree-of-freedom (SDOF) system under seismic excitation is proposed based on an extended Kalman filter (EKF). This method first identifies time intervals where a ...
Track Geometry Estimation and Hanging Sleeper Detection Using Vehicle Dynamic Responses with Unknown System Parameters
Publisher: American Society of Civil Engineers
Abstract: This study presents an efficient, but effective, approach to infer railroad track geometries and locate hanging sleepers from the car body responses. A half-car model is employed to represent the bounce and pitch motions ...
Development and Application of High-Sensitivity Wireless Smart Sensors for Decentralized Stochastic Modal Identification
Publisher: American Society of Civil Engineers
Abstract: State-of-the-art smart sensor technology enables deployment of dense arrays of sensors, which is critical for structural health monitoring (SHM) of complicated and large-scale civil structures. Despite recent successful ...