Civil Engineering Topics, Volume 4 Proceedings of the 29th IMAC, A Conference and Exposition on Structural Dynamics, 2011, the fourth volume of six from the Conference, brings together 35 contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Civil Engineering, including Operational Modal Analysis, Dynamic Behaviors and Structural Health Monitoring.

Inhalt
Multi-dimensional Calibration of Impact Dynamic Models.- Dynamic Analysis of Railway Bridges by Means of the Spectral Method.- Normalization of Complex Modes from Mass Perturbations.- Numerical Continuation of Periodic Orbits for Harmonically Forced Nonlinear Systems.- Identification of the Tensile Force in Tie-rods of Historical Constructions.- Data Fusion for System Identification of the Humber Bridge.- Human-induced Vibration Propagation on a Composite Floor System.- Mitigation of Low-velocity, Wind-induced Vibration of an Architectural Spire.- Reduced Order Modal-space Wireless Control of Civil Engineering Structures.- Wind Turbine Structural Damping Control for Tower Load Reduction.- Identification of Dynamic Properties of Open-deck Viaducts Under Passing Train Loads.- Risk Assessment of Dolphin Protected Bridge Pier Considering Collision Point Analysis.- OMAX Testing of a Steel Bowstring Footbridge.- Bridge Pier Scour Measurement by Means of Bragg Grating Arrays: Laboratory Tests and Field Applications.- Numerical Investigation on the Measurement Uncertainty in Operational Modal Analysis of a Civil Structure.- Measurement and Application of Bouncing and Jumping Loads Using Motion Tracking Technology.- Operational Modal Analysis for Guangzhou New TV Tower.- On the use of Shape Memory Alloys Dampers to Reduce the Vibration Amplitudes of Civil Engineering Cables.- Dynamic Behavior of 'Palazzo Lombardia' Helisurface, Comparison Between Operational and Experimental Modal Analysis.- Human-structure Interaction: Effects of Crowd Characteristics.- Delamination Detection in Concrete Plates Using Output-only Vibration Measurements.- Semi-active Control of Staircase Vibration Under Human Excitation.- A System Identification Based Approach for Estimating Modal Frequencies of Bridges Under Environmental Influence.-Decentralized Modal Analysis and System Identification Using Embedded Markov Parameter Extraction Within Distributed Wireless Sensor Networks.- Comparison Study of Output-only Subspace and Frequency-domain Methods for System Identification of Base Excited Civil Engineering Structures.- Footbridge Response Predictions and Their Sensitivity to Stochastic Load Assumptions.- Modal Parameter Variation due to Earthquakes of Different Intensities.- Operational Modal Analysis of a Historic Tower in Bari.- Monitoring of a Movable Bridge Mechanical Components for Damage Identification Using Artificial Neural Networks.- Ambient Vibration Based Modal Identification of a Flexible Retaining Wall.- Structural Health Monitoring of a Bridge Model Using ARX Models.- Structural Health Monitoring and Evaluating Structural Performance of a Stadium.- Estimation Damping for one of the new European Court Towers in Luxembourg.- Use of Wireless Smart Sensors for Detecting Human Falls Through Structural Vibrations.- Structural Health Indices for Steel Truss Bridges.