04695nas a2200421 a 4500 20260818170133.0 100714s2008 th uu|m rtt 0| a1eng d .b12080263 AIT Thesis no.ST-08-03 Saw Marlar Nonlinear dynamic analysis of gravity load designed reinforced concrete buildings with soft story for seismic performance evaluation Pathum Thani, Thailand : Asian Institute of Technology, 2008 72 leaves : ill. Thesis ; no. ST-08-03 A thesis submitted in partial fulfillment of the re quirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 2008 Configuration irregularities is one of the main characteristics of gravity load designed structures which reduce the seismic resistance. To evaluate the seismic performance of buildings, this factor should be taken into account. Configuration irregularity is defined as a significant physical discontinuity in the building configuration or in the lateral force resisting structural system. Irregularities both in terms of geometry and structural properties (i.e. strength and stiffness) are commonly found in gravity load designed structures. Buildings with irregular configurations were more vulnerable than the regular buildings in recent earthquakes. The most advanced level of analysis available to the designer for the purpose of predicting design forces and displacements under seismic attack is nonlinear dynamic time-history analysis. The main objective of this study is to investigate the seismic performance of GLD reinforced concrete frame buildings with soft-story configuration by nonlinear dynamic approach. The effect of greater height and fewer amounts of infill walls than the upper ones are considered in this study. The NLD analyses of the gravity load designed reinforced concrete moment resisting frames are conducted by using the proposed models developed from Matrin, 2007. A four-storey which includes 3 typical storeys and I mezzanine is selected to evaluate seismic performance of gravity load designed reinforced concrete building with soft-storey configuration. The four different regular and irregular types are used in this study. The seismic responses of all these frame structures are assessed by push-over analysis method, nonlinear dynamic analysis method and incremental nonlinear dynamic analysis method. The result obtained from pushover analysis is expressed in the form of the relationship of roof drift and base shear coefficient. The failure mechanism of each frame is determined by incremental nonlinear dynamic method. And storey shear demand and storey drift demand are obtained from nonlinear dynamic method. The nonlinear dynamic analysis results of storey drift distributions are very sensitive to reduction in strength and stiffness. The effects of infill wall and the effect of irregularity in height significantly dominate the storey drift distribution. The failure mechanism result shows that the brittle failure mode significantly reduces lateral load carrying capacity and ductility of structures. These analysis results are important for seismic resistance design of new buildings and retrofitting existing one. Buildings, Reinforced concrete Earthquake effects Earthquake resistance design Pennung Warnitchai, Chairperson Widjaja, Joko Harsono, Examination Committee Kawin Worakanchana, Examination committee Asian Institute of Technology Fellowship, Scholarship donor Asian Institute of Technology. Thesis ; no. ST-08-03 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03964 .b12080263 mnait u 240329 0 100714 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120332464 CREATED : 2009-02-14 RECORD # : i12640062 LPATRON : 1026049 LCHKIN : 2017-04-09 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 4 TOT CHKOUT : 10 TOT RENEW : 16 Barcode : 30050120334692 CREATED : 2009-02-14 RECORD # : i12640074 LPATRON : 1027040 LCHKIN : 2017-10-31 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 4 TOT CHKOUT : 6 TOT RENEW : 2 Barcode : 30050160100755 CREATED : 2016-04-22 RECORD # : i12950609 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 81493 81493 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-08-03 30050120332464 2026-08-18 17:01:33 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ST-08-03 30050120334692 2026-08-18 17:01:33 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.ST-08-03 30050160100755 2026-08-18 17:01:33 1 2026-08-18 40