| High-rise building has been one of the most significant parts of the modern architecture,the lateral force resistance of which comes from the shear wall or the cylinder structurecomposed of the shear wall. In order to ensure the ductile requirements of the concrete shearwall, if the concrete that adopted is the ordinary concrete whose level is C60or below C60, athick shear wall maybe required, and meanwhile, a higher steel ratio to meet the requirementsof axial compression ratio is also required. In that case, it may bring much more difficult tothe design and the construction. As a result, a composite structure that utilizes a high-levelconcrete seems necessary to meet the requirements of the High-rise building.To consider the advantages of the steel and reinforced concrete structures, this thesis is todesign a kind of steel plate shear wall by using a kind of C80high-strength concrete, at thesame time, doing some experiments and making some discussion of the data we get combinedwith the finite element simulation. This thesis consists of the following four parts:1．Design and implement experiments by using11combinations of shear wall specimensto research four parameters: steel ratio of the built-in steel plate, shear wall thickness, steelratio of the end column plate and the reinforcement ratio of the shear wall. The loading modeof the whole process is low period and circular, the results of which preliminary test andverify that this kind of composite shear wall can remain a stable mechanical and seismicperformance under this condition.2．In consideration of the seismic performance, for example, failure pattern, hysteresiscurves, skeleton curves, steel plate and steel strain, ductility factor, stiffness and strengthdegradation, energy dissipation capacity.The results showed that each specimen final failurepattern are at the bottom of the wall of the steel plate compression buckling occurs, theconcrete crushed, shows the characteristics of bending damage. With built-in steel plate withthe increase of steel ratio, the bearing capacity of the built-in steel C80high-strength concretecomposite shear wall increase significantly, but the ductility and deformation capacityincrease slowly. Wall thickness and edge effect on the performance of the composite shearwall components is bigger, can significantly improve the bearing capacity of the built-in steelC80high-strength concrete composite shear wall, energy dissipation capacity, ductility and the stiffness degradation was slow. The size of the wall body reinforcement ratio on theductility of the specimen, the effect of energy dissipation and load bearing capacity and theperformance is not obvious,which indicate that the steel plate shear wall by using C80high-strength concrete is provided with a fine seismic performance.3．To compare with the results that we get from the experiments, we set up anothermodel by the finite element analysis software named ABAQUS and carry out the finiteelement analysis of both results for11specimen, which can fit each other to some extent. Onthis base, use the finite element analysis software to make a further analysis of the steel ratioof the built-in steel plate, shear wall thickness, steel ratio of the end column plate, thereinforcement ratio of the shear wall and some other parameters which may affect theperformance of the composite shear wall.4．On the basis of the analysis for these parameters, we provide several projects forsolving some related aspects problems for the design of the steel plate shear wall by usingC80high-strength concrete. Meanwhile, supply some suggests of design for that kind ofcomposite shear wall in actual project. |
PDF Full Text Request