Critical Assessment of Interstory Drift Measurements

Interstory drift, the relative translational displacement between two consecutive floors, is an important engineering demand parameter and indicator of structural performance. The structural engineering community would benefit well from accurate measurements of interstory drift, especially where structures undergo inelastic deformation. Unfortunately, the most common method for obtaining interstory drift, double integration of measured acceleration, is problematic. Several issues associated with this method (e.g., signal processing steps and sparse instrumentation) are illustrated using data from shake table studies and two extensively instrumented buildings. Some alternative contact and noncontact methods for obtaining interstory drift are then presented.

[1]  Miau Bin Su.  TDR monitoring systems for the integrity of infrastructures , 1998, Smart Structures.

[2]  Y. Tamura,et al.  Measurement of Wind-induced Response of Buildings using RTK-GPS , 2001 .

[3]  Joan R. Casas,et al.  Fiber Optic Sensors for Bridge Monitoring , 2003 .

[4]  M. Celebi,et al.  Real-Time Seismic Monitoring Needs of a Building Owner—and the Solution: A Cooperative Effort , 2004 .

[5]  Gongkang Fu,et al.  AN OPTICAL APPROACH TO STRUCTURAL DISPLACEMENT MEASUREMENT AND ITS APPLICATION , 2002 .

[6]  David M. Boore.  Analog-to-Digital Conversion as a Source of Drifts in Displacements Derived from Digital Recordings of Ground Acceleration , 2003 .

[7]  David M. Boore,et al.  Comments on Baseline Correction of Digital Strong-Motion Data: Examples from the 1999 Hector Mine, California, Earthquake , 2002 .

[8]  Monica D. Kohler,et al.  Earthquake and Ambient Vibration Monitoring of the Steel-Frame UCLA Factor Building , 2005 .

[9]  K. D. Bennett,et al.  Interstory drift monitoring in smart buildings using laser crosshair projection , 1997 .

[10]  Mehmet Çelebi,et al.  GPS in Pioneering Dynamic Monitoring of Long-Period Structures , 2002 .

[11]  Maria I. Todorovska.  Cross‐axis sensitivity of accelerographs with pendulum like transducers—mathematical model and the inverse problem , 1998 .

[12]  Denis Legrand,et al.  Tilt Motion Effects on the Double-Time Integration of Linear Accelerometers: An Experimental Approach , 2006 .

[13]  Yiping Wang,et al.  Laser technique for measuring three-dimensional interstory drift , 1998, Other Conferences.

[14]  James L. Beck,et al.  Near‐real‐time loss estimation for instrumented buildings , 2003 .

[15]  Mihailo D. Trifunac,et al.  EFFECTS OF CROSS-AXIS SENSITIVITY AND MISALIGNMENT ON THE RESPONSE OF MECHANICAL-OPTICAL ACCELEROGRAPHS , 1977 .

[16]  Mehmet Çelebi.  Structural Monitoring Arrays — Past, Present and Future , 2005 .

[17]  R. Boroschek,et al.  Dynamic characteristics of a long span seismic isolated bridge , 2003 .

[18]  Chia-Yen Peng,et al.  Bulletin of the Seismological Society of America , 2005 .

[19]  Ying Lei,et al.  Identification, Model Updating, and Response Prediction of an Instrumented 15-Story Steel-Frame Building , 2006 .

[20]  John W. Wallace,et al.  A Quantitative Basis for Strong-Motion Instrumentation Specifications , 2009 .

[21]  Farhad Ansari,et al.  Practical Implementation of Optical Fiber Sensors in Civil Structural Health Monitoring , 2007 .

[22]  K. Worden,et al.  Data processing and experiment design for the restoring force surface method, part I: integration and differentiation of measured time data , 1990 .

[23]  John W. Wallace,et al.  Forced Vibration Testing of a Four-Story Reinforced Concrete Building Utilizing the nees @UCLA Mobile Field Laboratory , 2008 .

[24]  Carlo Atzeni,et al.  Remote sensing of building structural displacements using a microwave interferometer with imaging capability , 2004 .

[25]  Sami F. Masri,et al.  A vision-based approach for the direct measurement of displacements in vibrating systems , 2003 .

[26]  K. Hudnut,et al.  Continuous GPS Monitoring of Structural Deformation at Pacoima Dam, California , 1998 .

[27]  Tara C. Hutchinson,et al.  Light-based motion tracking of equipment subjected to earthquake motions , 2005 .

[28]  Bekir Bulent Algan,et al.  Drift and Damage Considerations in Earthquake-Resistant Design of Reinforced Concrete Buildings , 1982 .

[29]  M. Ashby,et al.  The selection of sensors , 2001 .

[30]  Shun-ichi Nakamura,et al.  GPS MEASUREMENT OF WIND-INDUCED SUSPENSION BRIDGE GIRDER DISPLACEMENTS , 2000 .

[31]  Mihailo D. Trifunac,et al.  A note on the useable dynamic range of accelerographs recording translation 1 We dedicate this paper , 2001 .