03306nas|a2200409 i 4500 20260817162409.0 030815s2003 th uzm rtt 00| a1eng d .b11894106 AIT Thesis no.ST-03-24 Attapol Kobkaiyakit Analysis of natural frequencies and mode shapes of reinforced concrete medium-rise slab-column frame buildings Bangkok : Asian Institute of Technology, 2003 124 leaves Thesis ; no. ST-03-24 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, 2003 Analytical method used to predict the dynamic properties of two medium-rise reinforced concrete slab-column frame buildings is developed in this study. In analytical method, three-dimensional finite element models of these buildings are built to assess their dynamic properties such as natural frequencies and mode shapes. The dynamic properties obtained from finite element models have been analyzed and compared with those obtained from ambient vibration measurements. Several important factors the significantly affect the dynamic properties of building are considered in finite element modeling such as the stiffuess of pile foundations in Bangkok's soil, and the mechanical properties of masonry infill walls. These models can be categorized into two cases: (1) the fixed base model, and (2) the flexible base mode. For first building without basement, the analytical results indicate that the flexible base model, taking into account the flexible foundation, gives excellent agreement with the measured results in translational mode, but the fixed base model gives the better prediction of torsional mode. For second building with basement, the effects of embedment and soil-structure interaction need to be considered in modeling to obtain a good correlation between measured results and analytical results. In summary, soil-structure interaction effects and the contributions of masonry walls should be considered in modeling to predict dynamic properties of medium-rise reinforced concrete slab-column frame buildings in Bangkok. Finite element method Slabs Reinforced concrete Pennung Warnitchai, Chairperson Kim, Kidu, Examination Committee Barry, William Joseph, Examination Committee Royal Thai Government, Scholarship donor Asian Institute of Technology. Thesis ; no. ST-03-24 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B08917 .b11894106 mnait u 240404 0 030815 m a u 0 mnait mnarc 22 40 Barcode : 30050120745541 CREATED : 2014-04-29 RECORD # : i12792731 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160067723 CREATED : 2016-04-19 RECORD # : i12937575 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 4896 4896 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.ST-03-24 30050120745541 2026-08-17 16:24:09 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.ST-03-24 30050160067723 2026-08-17 16:24:09 1 2026-08-17 40