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005			20260818133343.0
008			030815s2003 th uzm rtt 00| a1eng d
035			_a.b11894088
099		9	_aAIT Thesis no.ST-03-23
100	0		_aRam Wattanawerawong
245	1	0	_aHealth monitoring of a three-span contineous prestressed concrete bridge in Bangkok
260			_aBangkok : _bAsian Institute of Technology, _c2003
300			_a68 leaves
490	1		_aThesis ; _vno. ST-03-23
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2003
520			_aThe development and implementation of the bridge health monitoring system of the Taksin Bridge, which has already been carried out by Infrastructure Monitoring and Management System (IMMS) Company, are presented and discussed in this research. The Taksin Bridge, over 20 years old, is twin bridges and consists of three-span continuous pre-stressed concrete single box-girders. Currently, the monitor installed at the bridge has 24 channels of different sensor types collecting data such as strains, accelerations, temperature, and movement of support. The monitoring signals are obtained continuously and provide very valuable but limited information. It would seem that the main challenge is to interpret the meaning of the measurements and observations intelligently and systematically. In this research, therefore, we try to interpret the meaning of the health monitoring signals by using a reliable and accurate FE model which is validated by comparing the predicted natural frequencies and mode shapes with the ambient vibration test by Petchroen (2002). A comparison of the experimental results with those by the FE model method indicated a higher degree of correlation. The development and calibration of the FE model are illustrated. Up to now, we have carried out the studies on an investigation of the behavior of this bridge under thermal loadings by using calibrated FE model. It is found that a sinecurve pattern of a mean value of a statistical data is significantly caused by the effects of the temperature change.
650		0	_aBridges _zThailand _zBangkok
650		0	_aFinite element method
700	0		_aPennung Warnitchai, _eChairperson
700	0		_aPichai Nimityongskul, _eExamination Committee
700	1		_aKim, Kidu, _eExamination Committee
710	2		_aRTG Fellowships, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ST-03-23
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B08916
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