Structural Seismic Performance Analysis Of Multilayer Frame Structure And Stress Strengthening Reinforced Concrete Frame- Shear Wall Structure

For the ordinary multi-storey frame structure, Designers usually use specification requirements of the "No damage under minor earthquakes" as fortification target when they do the elastic design. Its seismic performance under severe earthquakes depends on Structural measures. But not make analysis and calculation under severe earthquakes. Based on the elastic design meet the specification requirements of practical engineering structure multilayer framework elastic-plastic analysis under severe earthquakes, observe its seismic performance under severe earthquake." Stress strengthening reinforced " refers to the steel which elongation above the provisions of the state standard after stretching. This material should be forbidden to appear in the process of construction. For the temptation of interests and construction management lax, it was often exposure that Some structures which have been completed use the "Stress strengthening reinforced". This type of building structure should be dismantled or may continue to use after reinforcement.The performance evaluation under the strong earthquakes is another key point in the research of this paper. Both at home and abroad, this paper structure seismic performance evaluation theory, ideal for multilayer frame and " Stress strengthening reinforced concrete frame- shear wall structure engineering dynamic elastic-plastic time history analysis under strong earthquakes, through quantitative analysis to evaluate the seismic performance level.1, uses the xtract program checking Midas Building automatic calculation of beam-column joint yield value, according to the calculation of bearing capacity of beam and column components results can be seen, the bearing capacity of beam components to yield results difference is not greater than 3%, the column component of PM correlation curve also fits in, two program calculating the bearing capacity of yielding results difference is not greater than 5%. Show that Midas Build program automatically calculate hinge value results more accurate.2, elastic design to meet the specification requirements of multilayer frame structure engineering dynamic elastoplastic analysis, the analysis results show that the structure in the relativity between layers of the building under the displacement Angle is 1/65, the beam and the basic operation of the basic components, a handful ofcolumn serious damage, therefore can meet the required performance level 5, so the engineering structures to meet the requirements of the seismic performance of D. But the layer 3, 4, 5, most of the beam-column joints, column and beam into the first yield state, form a " strong column and weak beam" phenomenon.3, in this paper, an example of Stress strengthening reinforced- shear wall structure under the action of and strong earthquakes in the analysis of the results showed that the structure in the earthquake under the action of displacement Angle between layers of the building is 1/736,10.8% beam into the yield status, the framework of column hinge yield did not happen. Structure under strong earthquakes for the largest interlayer displacement Angle of 1/273,60.1% beam component into the yield status,but the basic in CP limit of less than, 0.1% yield of frame column. Specification requirements of seismic fortification goal performance, show that the structure in the earthquake under the action of meet the requirements of performance level 4, meet the requirements of performance level 5 under strong earthquakes. So the engineering structure satisfies the requirement of grade D seismic performance target, but its reliability should be further discussed.4, using Ⅳ seismic wave SHW2 site to "thin body reinforced concrete frame-shear wall structure to supplement analysis, layer upon layer displacement Angle between the analysis results show that the structure of the building at 1/161, although78.9% yield beam component into the state, but a serious damage ratio of 0.023%,and only 1.9% of frame column into the yield state, structural response significantly stronger than the artificial waves. But the structure can still meet the requirements of performance level 5, can satisfy the requirement of grade D seismic performance goals.