Instrumentation for Structural Health Monitoring: Measuring Interstory Drift

Abstract eng:
A boom in tall building construction along with peer review of alternative performance-based designs has recently exposed fundamental issues within the field of earthquake engineering; e.g., ground motion selection and modeling guidelines. In response, the City of Los Angeles has implemented new instrumentation requirements for buildings designed using “alternative” procedures citing Chapter 16 of ASCE 7. The construction boom, as well as an updated instrumentation program, provides a rich opportunity to collect unique data in both wind and earthquake events to address critical analysis and design issues. In the medium-term, the aim is to develop and implement a network for structural monitoring and performance-based assessment using LA tall buildings as a test-bed. One particularly useful response quantity within the emerging performance-based earthquake engineering methodology is interstory drift. However, current methods for measuring interstory displacements (e.g., double integration of acceleration) are problematic; as illustrated from forced vibration testing of a full-scale building. A framework for near real-time monitoring for seismic events and preliminary results of ongoing efforts to develop alternative methods for measuring drift are presented.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket