Study Of The Seismic Load In Workshop Of Hydropower Station In River Channel

Our country is an area where earthquake happen frequently. With thedevelopment of water conservancy and hydroelectric power, it is unavoidable tobuilt hydroelectric works in strong seismic area. The workshop of hydropower plantis the import building of hydraulic engineering works, and the safety of theworkshop has relation to the safe and stable operation of the whole pivot. So, thestudy of the rules on earthquake load of hydropower plant workshop in seismic areahas significant theory value and practical effect.The main study object in my article is the workshop of power station in riverchannel, and the aim is to study the earthquake load distribution rules of workshop.The article is based on basic theories, and use the finite element software ANSYS asthe calculation tool, to analyse and calculate the distribution coefficient of seismicacceleration through dynamics analysis of several workshops of power stations inriver channel. And the distribution coefficient is compared with the current relevantregulations of factory building. The main study items of the article are listed asbelow:1. The article has explained the basic theories of finite cell mode calculation andintroduced the basic principle of reaction spectrum theory. And the application ofreaction spectrum theory in the aseismatic design of hydraulic power plantworkshop has been introduced in detail.2. Based on the two models of plane and space, the dynamic characteristic ofXiaoxia power plant's workshop has been analyzed and calculated, and thedistribution coefficient of horizontal seismic acceleration have been calculated.The result shows: the calculation results of the plane model can reasonablereflect the distribution rule of horizontal seismic load of workshop along riverdirection.3. The simple models of dynamic plane analysis on hydraulic power plantworkshops such as Gezhouba, Fuchunjiang, Lingjintan, Tianqiao, Xijin, Mashi,Wanan, Fuerjia have been established and these models can better reflect thevibratory characteristic of workshop along river direction, and the self-vibratorycharacteristic of the model also have been analysed and calculated.4. According to the dynamic characteristic analysis of the plane models and thebasic principle of reaction spectrum theory, the distribution of distributedcoefficient of horizontal seismic acceleration along the workshop's heightdirection has been calculated in each model. Draw the distribution coefficientcurves of horizontal seismic acceleration of every workshop in river channel,and compare the curves with the current relevant regulations of the power stationin river channel. The results of the calculation accord with the distributioncoefficient of horizontal seismic acceleration in current relevant regulation ofworkshop.