Numerical Simulation Of The Impact On Safety Of Original Structure Under The Technology Of Supporting Frame Structure’s Beam And Changing Column And Countermeasure Of Changing Column

In recent years,many buildings in our country has reached use fixed number of year,and construction quality problems occur frequently.Due to the early years,tall,tall enough,so there are a large number of frame structure is in use at present stage and there are some potential safety hazard,this has given rise to reinforce the business,and the substitution method of reinforcement is obtained in a relatively short period of time complete structure reinforcement,simple construction,cost savings,reinforcement effect is good.But the displacement strengthening research mainly is in early make roughly reinforcement scheme,mainly by the displacement data in the process of monitoring and apparent observation,foresee a shortage,damage to the structure and condition of various underpinning without a system summary,so this paper USES the finite element software to the underlying framework column replacement is simulated,analyzed the influence of different operating conditions on the structure and component.This article main research content is as follows:(1)Using PKPM software designed a six layer frame structure,and enter the specification of the load,by calculating the complete its reinforcement,and calculate the bottom column need to replace the actual axial force,do the preparatory work for the next step of replacement.(2)Application of ABAQUS software framework model is established,simulated frame structure Angle,side column,the column at the bottom of the replacement process,by changing the parameters,including block position,block size,jack force the block size and number to simulate the actual working condition,the original structure and certain stress components are analyzed,and made some guidance for practical engineering.(3)For the expansion of concrete in practical engineering use to do a simple introduction,then simulated using a improve concrete grade concrete replacement and removed after jack force force,the framework of and compare the force of the various.