Simulation Of Seismic Response Of Reinforced Concrete Frame-Tube Of Structures

Computer simulation of the construction engineering is according to a few experiments of construction or structural members to establishing physics model, basing on strict theories analyzing to getting model, make use of the compute language to build the simulative model, carry the simulative calculation to verify a rationality for establishing model, then extend the parameter scope to research the influence of these parameters, finally put forward a calculating method for problems, open out the mechanism of construction respond and describe to distortion, crack and defeat .Passing to the simulative technique, the dynamical process of construction under the earthquake is easy to holds, discovering construction regulation, deepen structural analysis and design. Computer simulation has the biggest practical value to constructions engineering. Along with the super and large and extremely high type development of the modern construction and structural increasingly complicated, it is no longer applied to look for the regulation passing traditional method basing on the large quantity real object model. It is at necessarily line to develop the computer simulation of the construction engineering. According to the simulative technique, the article study seismic response of reinforced concrete frame-tube of structures.In the article, Based on the principle of continuum medium mechanics and cannot thermodynamics, equation of concrete is studied. Damage evolution equation of concrete in compression is obtained after studying the evolution course of damage variable according to the engineering practices the applied purpose. The pole unit model of variable rigidity including elasticity zone, cracking zone and yield zone is set up. The relation of M -N -φ is made certain on the basis of the three data: cracking force and cracking deformation, yielding force and yielding deformation, limit force and limit deformation. The uniaxial restoring force model is established on the basis of therelation of M - N - φ; the biax restoring force model is established on the basis of the reinforcement theory of Mroz. The shear rigidity of plastic hinge in pole unit model is made certain on the truss model. The unit matrix takes into account the unit rigid zone and Bond behavior. The space pole model of structures is set up according to the seismic characteristic being the three-translation motion, structural responses and the true performance of structural members. Through studying the calculus method of the structural vibration equation, a solution having third-order precision is presented. On the basis of the seismic design goal, avoiding structural collapse or guaranteeing some reasonable form of structural collapse to effectually protect personnel and property, the mechanism and probable form of structural collapse is studied, making certain the geometric non-linear stiffness matrix of space pole unit. The relation and affect of structural strength, deformation and energy is also studied. The collapse failure criteria are set up according to energy dissipation.Two core problems in the simulative technique, the parametrical modeling of simulative object and visualization of simulative computing result, are systemic studied, and visualized resolvents are presented. It is research that the basic theory and applying principle of simulative technique using object-oriented program technique, and reinforced concrete object is set up. Exploiting simulation system of reinforced concrete frame-tube, the compare between experimental result and analysis indicates the coherence of simulation model in the article.