Investigation Of Seismic Performances Of Reinforced Concrete High-Rise Frame Building

At present, reinforced concrete high-rise frame buildings are widely used in practicalconstructions in China. In the paper, seismic performances of reinforced concrete high-riseframe building are studied. Major achievements of the dissertation are as follows.The element types and material constitutive models of structural analysis in ABAQUSare introduced. The parameter values of FEM geometrical models, steel constitutive modelsand concrete constitutive models of the equivalent fiber beam elements and3D shell elementsare determined through a numerical simulation of a pseudo-static test of reinforced concretecolumn in ABAQUS.A practical L plane reinforced concrete high-rise frame building as an engineeringexample is3D finite element modeled in ABAQUS and PKPM software. Structural dynamiccharacteristics, elastic response time histories and elastic-plastic response time histories areanalyzed. Stiffness distribution and vibration torsional effect of whole structure are evaluated.Structural internal force responses, displacement responses, cumulative hysteretic energy andseismic input energy are comparative analyzed with different input orientations with strongmotion data of El Centro, Taft and TCU070. The distribution regularity of cumulativehysteretic energy and sequence of plastic development are analyzed with seismic actions. Theresults show that TCU070is the most dangerous ground motion with biggest seismic inputenergy. Structural elastic-plastic stiffness at Y direction is less than it at Y direction and theweak storey is bottom storey. The sequence of plastic development of bottom columns is fromaxial7to axial1and from axial A to axial E.A pushover analysis of the engineering example based on multiple point displacementconstraints is done in ABAQUS. The capacity spectrum curves and elastic demand spectrumcurves are calculated. Elastic-plastic demand spectrum curves are iterative calculated to getthe structural performance points. The seismic performances and performance targets areevaluated and compared with the analysis of structural dynamic response time histories. Theresults show that the weak storey is bottom storey and structural performance targets meetcommands.