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Optimal Sensor Placement for Modal Identification of Bridge Systems Considering Number of Sensing Nodes
Publisher: American Society of Civil Engineers
Abstract: A series of optimal sensor placement (OSP) techniques is discussed in this paper. A framework for deciding the optimum number and location of sensors is proposed, to establish an effective structural health monitoring (SHM) ...
Observer Kalman Filter Identification for Output-Only Systems Using Interactive Structural Modal Identification Toolsuite
Publisher: American Society of Civil Engineers
Abstract: Several modal identification techniques have been developed in the past few decades, and their use is rapidly expanding due to new focus on the instrumentation of major structures. This paper focuses on the expansion of ...
Modified Natural Excitation Technique for Stochastic Modal Identification
Publisher: American Society of Civil Engineers
Abstract: This paper presents an improvement to the eigensystem realization algorithm (ERA) with natural excitation technique (NExT), which is called the ERA-NExT-AVG method. The method uses a coded average of row vectors in each ...
Framework for Mitigating Human Bias in Selection of Explanatory Variables for Bridge Deterioration Modeling
Publisher: American Society of Civil Engineers
Stochastic Modeling of Bridge Deterioration Using Classification Tree and Logistic Regression
Publisher: American Society of Civil Engineers
Abstract: This paper presents a new method to develop stochastic deterioration models using a combination of methods including Markov chains, logistic regression, and classification trees. It is computationally more efficient to use ...
Stress Increase of Unbonded Tendons in Continuous Posttensioned Members
Publisher: American Society of Civil Engineers
Abstract: A database of 253 unbonded tendon-reinforced members was assembled and analyzed with a focus on Δfps. Large scatter was observed and gaps were identified in previous databases due to possibly unsuitable inclusion of certain ...
Sequential Analysis of Ground Movements at Three Deep Excavation Sites with Mixed Ground Profiles
Publisher: American Society of Civil Engineers
Abstract: Field measurements of settlement and lateral deformation obtained from three deep excavation sites constructed in mixed ground profiles are presented and analyzed. Settlement measurements were obtained throughout the ...
Behavior of Concrete-Faced Rockfill Dams during Initial Impoundment
Publisher: American Society of Civil Engineers
Abstract: Centrifuge tests to investigate the behavior during initial reservoir filling of a concrete faced rockfill dam (CFRD) with face slab stiffnesses that vary by a factor of about two are described. The two centrifuge models ...
Evaluating Road Crack Segmentation Performance in Participatory Sensing: An Exploration of Alternative Metrics
Publisher: American Society of Civil Engineers
Abstract: AbstractIn participatory sensing, road cracks can be monitored utilizing the dashboard cameras
(dashcams) of regular vehicles. While the predicted segmentation masks in dashcam
images may seem satisfactory for assessing ...
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