Frame Structure Locally By Fire After Static And Seismic Performance Of Numerical Simulation

Fire and earthquake are both natural disasters which happened frequently in recent years.And both of them will leads the destruction to the buildings to a certain extent.At present,There are lots of research for buildings that suffer from fire.But the research for the performance of the whole structure of the building after the fire against earthquake is limited.After part of constructions sufferd from the fire,that won't affect the whole structure.However,after being heated,the bearing capacity will decrease.During the time after fire,it's possible to suffer from the earthquake.To guarantee the personal and property,in addition to the normal design,it's necessary to analysis the seismic performance of the damaged structure.Frame Structure is used widely in the architecture field.In this article,Frame Structure is built by using ABAQUS software,including temperature field model and seismic analysis model.And I summarize the constitutive relations of concrete and reinforce that are fit to the model in regular and high temperature.And it is used to simulate the value.Main research contents:(1)Designing the Frame Structure Model with PKPM and then building the model with ABAQUS.Simulating the reaction of structure after fire.(2)Analyzing the distribution of temperature field and cross-section after fire with ABAQUS.And then analyze the fire-damaged structure under the static loadings and the lost of bearing capacity and compare with structure without fire.(3)Chose the suitable earthquake wave,analyze the time-history method of the model in frequent earthquake.And then compare different parts after fire.To get the time-history curve of stress and displacement,and inter-story displacement angle.(4)Make the plasticity time-history analysis under rare earthquake.Analyze the plastic development and plastic hinge to get the condition of collapse.Compare different parts of the structure.