03356nas a2200277 a 450000500170000000800410001703500150005810000210007324501720009426000670026630000240033349000270035750001700038450200590055452019440061365000570255765000380261465000410265270000370269370000490273070000460277971000640282571000650288981000590295485600650301320260818112754.0220211 2020    th uu m rtt   0|  a1eng    a.b123791161 aBhattarai, Kapil10aEvaluation of nonlinear seismic responses of low- to mid-rise RC frame buildings with masonry infill walls by using a modified response spectrum analysis (MRSA) method  aPathum Thani, Thailand :bAsian Institute of Technology,c2020  a168 leaves :bill. 1 aThesis ;vno. ST-20-14  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology  aThesis (M. Eng.) - Asian Institute of Technology, 2020  aLow to mid-rise RC frame with masonry infills are the most preferable construction in  urban areas of Nepal. These buildings are constructed following the building code  implemented by Government of Nepal. Although Nepal has implemented the building  code, these codes do not consider the influence of masonry infill on the overall  structural response.  It is important to evaluate the seismic demands with sufficient accuracy to design and  construct earthquake resistant structures. Most of the engineers in Nepal prefer code  based standard RSA procedure to evaluate the seismic demands. However, recent  studies suggest that RSA procedure underestimates the seismic demands. This study  focusses on application of MRSA procedure to variety of low to midrise infilled RC  frame buildings. MRSA procedure uses the concepts of UMRHA and Equivalent  Linearization method. The underlying concept is that the linear elastic model with  elongated period and additional damping can approximately represent the nonlinear  seismic demands.  12 typical buildings from Nepal are selected from 116 random samples. These  selections are based on architectural and structural features of the buildings. The  selected buildings are of 2 to 5 story residential, residential plus commercial and  residential plus office buildings. MRSA process is applied to obtain the seismic  demands of the buildings. It is observed that these types of buildings under larger  ground shakings show soft story effect with significant change in mode shape. The  change in mode shape is incorporated in the MRSA procedure and seismic demands of  all the buildings are obtained. MRSA procedure is predicting the seismic demands in  both global and component level with reasonable accuracy while there is a clear  underestimation by Standard RSA procedure. Seismic demands obtained from NLTHA  method is used as benchmark to evaluate the accuracy of the proposed method.  0aReinforced concrete constructionxEarthquake effects 0aEarthquake hazard analysiszNepal 0aBuildingsxEarthquake effectszNepal0 aPennung Warnitchai,eChairperson0 aThanakorn Pheeraphan,eExamination Committee0 aPunchet Thammarak,eExamination Committee2 aComputer and Structures Inc. (CSI), USA,eScholarship Donor2 aAsian Institute of Technology Fellowship,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-20-14  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B15734