000			03978nas a2200409 a 4500
005			20260818175441.0
008			220210 2021 th uu m rtt 0| a1eng
035			_a.b1237930x
099		9	_aAIT Thesis no.ST-21-02
100	1		_aLiyanarachchi, Navindra
245	1	0	_aRapid identification of seismic damage in tall buildings by using acceleration response time histories : _beffects of modelling errors & correction measures
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2021
300			_a121 leaves : _bill.
490	1		_aThesis ; _vno. ST-21-02
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology
502			_aThesis (M. Eng.) - Asian Institute of Technology, 2021
520			_aThis study presents a novel technique to identify the seismic damage to a Tall building by using accelerometers on a limited number of floors. The procedure was based on modal decomposition considering the concept of mode of vibration where any complex response of the structure could be defined as a summation of modal responses. The modal decomposition was carried out by a new technique called the 2Orthogonal Filter3 approach, where the orthogonality of the modes was taken into consideration to obtain the responses. The acceleration records from the accelerometers during a seismic event were passed through the Orthogonal Filter Matrix to get the modal accelerations directly. These modal accelerations were multiplied by the mode shape of the structure and summed to obtain the acceleration of any floor. In the real-world scenario, the dynamic properties such as natural frequencies and mode shapes of the real structure differ from the numerical model of the structure due to many complexities. Hence, a model updating procedure was performed to match the dynamic properties of the real building with that of the numerical model. Modal accelerations were double integrated to find the model coordinates, which were then used to calculate the displacement and inter-story drifts. The modal coordinates were converted to modal forces based on the hysteresis behaviour identified for each mode by conducting a modal cyclic pushover analysis. These modal forces could then obtain any force related response. The seismic damage to the structure could be identified by comparing these seismic demands with the capacity of the structure. The proposed technique was verified by conducting a Non-Linear Response History Analysis (NLRHA) Procedure. It was also compared with the conventional FEM updating procedure for damage identification and shown that it predicted the responses better than the traditional approach since the actual acceleration of the building during the seismic event was considered.
650		0	_aBuildings _xEarthquake effects
650		0	_aAcceleration (Mechanics)
700	0		_aPennung Warnitchai, _eChairperson
700	0		_aPunchet Thammarak, _eExamination Committee
700	1		_aAnwar, Naveed, _eExamination Committee
710	2		_aComputer and Structures Inc. (CSI), USA, _eScholarship Donor
710	2		_aAsian Institute of Technology Fellowship, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ST-21-02
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B15689
907			_a.b1237930x _bmnait _cm
902			_a240419
998			_b0 _c220210 _dm _ea _fm _g0
945			_lmnarc
945			_lmnarc
942			_c67
942			_c40
909			_aBarcode : - _bCREATED : 2022-10-02 _cRECORD # : i13364959 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30020220004595 _bCREATED : 2023-12-01 _cRECORD # : i13424701 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c97387 _d97387