الفهرس Only 14 pages are availabe for public view
 |  | from | 117 |  |  |
| | | from | 117 | | |
Abstract
Earth quakes (EQ) represent one of the most important natural factors which affect buildings. EQ result from the movement in earth layers, which have source of power that affect the building. Most EQ effects on buildings depend on the distance of the building from the source of EQ energy, so we have to design buildings to resist this force by using shear wall, cores or framings but some of old buildings doesn’t structure element to resist this force, design in pervious codes, didn’t consider that 4 storey buildings need structure element to resist EQ force so, we will study the behavior of beam column connections without CFRP and with CFRP on concentrated load at free end of cantilever beam is investigated in this thesis, we focus on developing best recommendations for using CFRP in retrofit beam column connection. In addition to complement the published data, finite element model using the computer package ANSYS was used. The additional beam-column connections in this study are classified in 4- Groups (A, B, C, D) depending on %Asb bottom (0.025% - 1%) ,each group will classified from %As top (0.039% - 2.45%) ,we investigate the influence of boundary condition, columns as hinged supports finally, we concluded the efficiency of using CFRP sheet if its improve or decrease efficiency of beam column connection depending on %As on beam