Abstract
Design of powerhouse is a major concern in hydropower project located in Nepal Himalaya. Nepal is located in seismically active zone. The structures built in this region have to be seismic resistant in addition to dynamic loads, produced in power house due to the vibration of turbine and generator set. The structural elements of the power such as slab, column, foundation, wind cover, wall need to sustain produced vibration. It should also be earthquake resistant at the same time. Using finite element methods, the transmission of the produced vibration in powerhouse was analyzed for a selected case study located in lesser Himalaya of Nepal. The nature transfer of vibration loads through all the supporting structure beam, column, foundation raft is analyzed. The critical nature and path of energy transfer due to dynamic load was recognized in terms of the displacement produced with the comparative study in the model without mechanical vibrations.
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