Sesmic Performance of Multistoried Building with Diaphragm Discontinuity

Now a day’s many of structures are destructed totally or partially due to effect of earthquake. So it is very essential to determine the seismic response of each building. In multistoried building damages due to earthquake generally initiates at locations where there is presence of structural weaknesses. The major reasons of failure of structure during the earthquake are irregularities. Buildings with opening in slab re subjected to damages due to action of the lateral loads. There are many multistoried buildings provided with opening for the purpose of stair cases, lighting, architectural features or shafts. Openings are provided at various locations such as center, at corners end and at periphery with building having various shaped columns. This opening in diaphragms causes stresses at discontinues joints with building element. The effects of opening in slab were investigated. Therefore diaphragms are required to be designed as a part of the seismic force-resisting system of every new building as they distribute lateral forces to the vertical elements of lateral force resisting system. Diaphragms acts different according to configuration of the building and type of load acting on it. Concrete diaphragms having different elements which plays important role in resisting lateral forces. In this thesis an attempt is made to try to know the seismic performance of multistoried building with diaphragm discontinuity by comparing with seismic performance of multistoried building without diaphragm opening.