Koirala, Pralhadh <br/><br/>
Rapid indentification of seismic damage in a multi-story hospital building in Chiang Rai by using acceleration response time histories 

 - Pathum Thani, Thailand :  Asian Institute of Technology,  2024 
 - 128 leaves :  ill.+  1 online resource 
 - Thesis ;  no. ST-24-04 .
 - Asian Institute of Technology.  Thesis ;  no. ST-24-04 .
<br/><br/> A thesis submitted in partial fulfillment of the requirements for the  degree of Master of Engineering in Structural Engineering 
<br/><br/>Thesis (M. Eng.) - Asian Institute of Technology, 2024 
<br/><br/> An innovative method for detecting seismic damage in a hospital building is introduced  in this research, which employs low-cost accelerometers installed on a limited  number of floors. In consideration of the concept of mode of vibration, the procedure  was founded on modal decomposition, which states that any complex response of the  structure can be expressed as the sum of its modal responses.Low-cost accelerometers were fitted on a limited number of floors. Human excitation  of the hospital building was performed in order to determine the dynamic properties of  the building such as frequency, 3D mode shape and damping ratio.These identified  dynamic properties of the building were used as a foundation to prepare an updated  numerical model in computer software which closely represented the actual building.The modal decomposition was performed utilizing the "Least Square Error" method, in  which the modal acceleration was calculated by minimizing the square of the error  between the measured and estimated acceleration responses coming from seismic activity coming from low-cost accelerometers. The sum of these products of modal accelerations  with  the  structure's mode shape produced  the estimated acceleration of each floor. Utilizing the obtained modal acceleration, acceleration, displacement, and interstory drift-related hospital building damages were identified.Modal pushover analysis was conducted on updated numerical model for each  considered mode to determine the global as well as component level response of the  structure. All the estimated results were validated with the actual measurement showing that the entire process studied in this thesis yields a rapid, reliable, and cost-effective  structural health monitoring system. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Structural Health Monitoring--Thailand--Chiang Rai<br/>Hospital building--Earthquake resistant design--Thailand--Chiang Rai