Rapid indentification of seismic damage in a multi-story hospital building in Chiang Mai | |
| Author | Kyawt Tin Zar Ko |
| Call Number | AIT Thesis no.ST-24-03 |
| Subject(s) | Structural health monitoring--Thailand--Chiang Mai Earthquake resistant design--Thailand--Chiang Mai Hospital buildings--Earthquake effects--Thailand--Chiang Mai |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This study shows how to create a rapid evaluation scheme for the seismic damage in Chiang Mai hospital with the use of cost-effective sensors (MEMS) and the measured acceleration responses in time history. The combined acceleration responses from all modes contribution can be measured from MEMS sensors which are permanently installed to the some floors of building during seismic event. These combined responses need to break down into modal responses from each mode contribution. This can be done by modal decomposition with the use of least-square error. The reason why the modal responses are needed is that these modal responses can be converted into further responses. The seismic responses such as floor accelerations, displacements and story drift ratio can be estimated by using the modal responses, and then the accuracy of estimated seismic responses can be checked by comparing with actual measurement from sensors.The next step is to use these responses as the parameters to identify the damage index associated with the performance of the building. Peak floor accelerations can be used to estimate the seismic impact to acceleration-sensitive components such as furniture, ceiling and M&E accessories. The story-drift ratio can check the seismic impact to drift-sensitive components such as infill walls and partition walls. However, only this two can state the performance of building up to non-structural damage level.To know the seismic impact to structural components, other internal forces such as shear and moment are needed. Modal pushover analysis comes into picture for identification of shear and moment demands of the hospital building under seismic events. Finally, these seismic demands can be compared with the capacity of each member to localize the damage and determine the severity of damage. |
| Year | 2023 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai; |
| Examination Committee(s) | Thanakorn Pheeraphan;Krishna, Chaitanya; |
| Scholarship Donor(s) | WE Consultant Scholarship;AIT Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2023 |