Application Research In The Steel Structure Teaching Building Of The Lateral Force Resisting System Disposed Centralized

From2009,in the whole country it starts the safety engineering of school buildings.For the region of high seisnic intensity of7and above degree.landslides and debris flow and flood prone areas of geological diseasters.There are security risks of the school buildings at all levels of urban and rural primary and secondary.Its needs seismic evaluation.consolidation,migriation hegde and improveing comprehensive seismic capacity.And it can make the school buildings catch the key performance objectives.Avoiding the risk.it ensures the safety of teachers and students.and meets the safe requirement of other code.According to inverstigate and identify the school buildings,a lot of schoolhouses are assessed the C level(using after reinforcement),D level (breakdown).In terms of YunNan.it is about3.4462million square meter unsafe school buildings,occupied64.23percent of total.D level has6.4million square meter.The school buildings are mostly located in earthquake focus surveillance and protection zone.and the region of7and above degree of high intensily areas.Nearly1770schools are faced with geological diseasters.they all need to dealing with or migrating to reconstruction.The paper sets a rural teaching building for example,the architectural plan-",inner corrodor teaching building.The indices of architectural plan fulfill the code for design of school(GB20099-2011) and constrction standard of common school of rural.It is no conflict of all indices to code and construction standard.The structure teaching building of "-" uses steel frame shearwall and the shearwall disposes centralized around the stair well.The shearwall uses as the primary lateral force resisting component.The frame supports the vertical loads.It can reduce the size of column and reduce the steel tonnage.By analysis the result of caculation,frame shearwall system has better performance of lateral force resisting,and has less drift.The stress ratios are controlled in a reasonable range.According to statistic steel tonnage of steel frame shearwall system found that the steel tonnage is in a low level at the design basic acceleration of ground motion of7-9degree.In9degree0.4gal,and the same of other design conditions.it is compared the steel tonnge of frame shearwall and pure steel frame system.The steel tonnage of the two systems are difference about19.22kg per sqare meter.It is shown that frame shearwall system can efficient reduce steel tonage in this intensity.The structure is a good system.It can save much cost in the aspect of purchase processing,manufacturing and istallation while the structure use less section of beams and columns.