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RISDesign Approach and Practical Formulas of Electromagnetic Inertial Mass Dampers for Cable Multimode Control
Publisher: ASCE
Abstract: An inerter-based damper termed electromagnetic inertial mass damper (EIMD) has been demonstrated as a high-performance passive damper for bridge stay cables. However, how to design an EIMD for suppressing cable multimode ...
Proposed Strategy for the Application of the Modified Harmony Search Algorithm to Code-Based Selection and Scaling of Ground Motions
Publisher: American Society of Civil Engineers
Abstract: The Chinese code for seismic design of buildings (GB50011-2010) allows the use of sets of ground motions in the seismic design and analysis process. However, the prescriptions for record selection are somewhat vague compared ...
Unify Energy Harvesting and Vibration Control Functions in Randomly Excited Structures with Electromagnetic Devices
Publisher: American Society of Civil Engineers
Abstract: With the extensive studies on energy harvesting via electromagnetic devices in civil or mechanical structures, a novel dual-function device, termed electromagnetic damping and energy harvesting (EMDEH) device, has been ...
Design Formulas of Electromagnetic Inertial Mass Dampers for Cable Vibration Mitigation
Publisher: ASCE
Abstract: This study proposes the design formulas of an inerter-based damper termed electromagnetic inertial mass damper (EIMD) for bridge stay cables. To maximize the modal damping ratio for a specific cable vibration mode, we ...
Real-Time Model Updating for Prediction and Assessment of Under-Construction Shield Tunnel Induced Ground Settlement in Complex Strata
Publisher: American Society of Civil Engineers
Abstract: Accurate prediction of maximum ground settlement (MGS) is critical for preventing engineering accidents in tunnel construction. This study introduces a dynamic analysis approach utilizing data updating to predict MGS and ...
Improved Particle Swarm Optimization-Based Form-Finding Method for Suspension Bridge Installation Analysis
Publisher: American Society of Civil Engineers
Abstract: In this paper, an improved particle swarm optimization (IPSO) method, which is based on standard particle swarm optimization (PSO) and a changing range genetic algorithm (GA), is proposed, and it is applied in the form-finding ...
Probabilistic Performance-Based Assessment for Critical Separation Distance of Adjacent Buildings: Theoretical Analysis
Publisher: ASCE
Abstract: Existing methodologies to calculate the minimum separation distance between adjacent buildings are based on the estimations of the peak relative horizontal displacement of adjacent structures that are characterized by ...
Calculation of Structural Response and Response Sensitivity with Improved Substructuring Method
Publisher: American Society of Civil Engineers
Abstract: Structural responses and response sensitivities are frequently required in structural health monitoring, whereas the computation of structural responses and response sensitivities of a large-size model is time consuming. ...
Dimensional Analysis of Pounding Response of an Oscillator Based on Modified Kelvin Pounding Model
Publisher: American Society of Civil Engineers
Abstract: The pounding response between a single oscillator and a rigid barrier was investigated with dimensional analysis in which the modified Kelvin pounding analytical model was used to simulate the contact force. The dimensionless ...
Performing Global Uncertainty and Sensitivity Analysis from Given Data in Tunnel Construction
Publisher: American Society of Civil Engineers
Abstract: This paper develops a novel hybrid approach that integrates metamodeling, machine learning algorithms, and a variance decomposition technique to support global uncertainty and sensitivity (US) analysis under uncertainty. ...