02797nam a2200385 4500 20260818095313.0 290798 th eng .b10231237 AIT Thesis no.ST-88-15 Lorenzo, Jesus N. Effects of prestressing force on mechanical behaviour in shear of prestressed concrete beams Bangkok : Asian Institute of Technology, 1988 151 p. Thesis ; no. ST-88-15 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1988 Prestressed concrete beams were tested to investigate the mechanical behavior in shear with the scope of conducting a detailed experimental observation on the effects of varying levels of prestressing force on shear crack displacements and stirrup stress as well as the shear cracking behavior of the beams . The magnitudes of the crack opening and shear displacement were meticulously measured using contact gage points. Forces transferred along the diagonal cracks were determined applying the Li- Maekawa Model on Contact Density Function to the measured crack displacements. The crack opening and shear displacement ratio decreases for beams with higher applied prestressing forces, so that the stresses transferred by aggregate interlocking along shear crack surfaces were found to be greater with higher prestressing force while stirrup forces along the shear crack are smaller. Total forces transferred along the shear crack, which is the summation of forces transferred by aggregate interlocking and by the stirrup, were observed to be grater with higher prestressing force. Prestressed concrete beams Ueda, Tamon, Chairperson Worsak Kanok-Nukulchai, Examination Committee Pichai Nimityongskul, Examination Committee DAAD (German Academic Exchange Service) Asian Institute of Technology. Thesis ; no. ST-88-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B18640 .b10231237 mnait s 240329 2 951012 m a s 0 mnait mnarc 22 40 Barcode : 30050120692610 CREATED : 2014-08-04 RECORD # : i12787413 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160011465 CREATED : 2016-07-04 RECORD # : i12928124 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35299 35299 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-88-15 30050120692610 2026-08-18 09:53:13 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-88-15 30050160011465 2026-08-18 09:53:13 1 2026-08-18 40