Earthquake Vibration Control Using Modified Framed Shear Wall

Introduction

Earthquake Vibration Control Using Modified Framed Shear Wall In past earthquakes, many buildings (Reinforced Concrete) have experienced either different types of damage or collapsed. On buildings which were collapsed by earthquakes various investigations have been carried out. As day by day seismic zones are changing the buildings which are earlier not prone to Earthquake, now came in severe zones, so for them this method of strengthening can be done easily. And for those buildings which was not constructed as per modern code procedure, by inspecting them according to their importance value mentioned in code (IS 1893 part1:2002) we can in advance provide sufficient stiffness to those building to resist the lateral loads significantly by constructing exterior shear wall of adequate strength as per Code provisions.

In past earthquakes, many buildings (Reinforced Concrete) have experienced either different types of damage or collapsed. On buildings which were collapsed by earthquakes various investigations have been carried out. Week column – strong beam behavior, poor quality concrete, poor bond of the end regions, inadequate splice lengths, short column behavior and incomplete design consideration were some of structural deficiencies. Modern building codes are introduced after the construction of most of these buildings. Required ductility, lateral stiffness and strength are much less than those imposed by modern building codes. As they have low ductility these buildings are prone to large displacement demand due to deficient lateral stiffness and strength.

Conclusion

buildings can’t bear the transverse load (earthquake load), efficiently as these were not designed for these loads. As now seismic zones changes day to day & now these old buildings/ monuments exist in severe to very severe zones, we can’t leave these buildings vacant for long time period during renovation work, which require rehabilitation of living life.