Review of Punching Shear Strengthening Methods [Case Study: Application of Post Installed Shear Bolt Papers]

Flats slabs became a common solution for buildings because they are easy and fast to build. In the last few years, some building that constructed using flat slab system required strengthening column junction due either imperfections during design, construction or increase of design load in case change function. The strengthen methods against punching shear (column heads, drop panels) leave an obvious trace which most cases conflicts with extensions parts may reduce height story considered, thus it can’t be applied such cases. A relatively new technique was studied, consists high tensile steel bolts installed vertically through by drilling bonding high-performance epoxy adhesive mechanically anchored surface. Many studies validated efficiency also enhancing ductility slab-column connection results shows method can practice. this paper, post-installed is presented practical study. capacity enhanced 53% construct. Also, took not more than hours its application. addition, extension utilities (Heating ventilation air conditioning, communications...etc.) harmed surface remains clear. Those advantages make favorable option owners engineers when shear.