After The Earthquake There Cum Improve Seismic Performance Of High-rise Residential And Countermeasures

Tangshan a 8 degree(0.2g)fortified shear wall residence as an example,using YJK software input actual reinforcement and related parameters to establish a model.It is divided into two working conditions: the original fortification intensity changes from 8 degrees(0.2g)to 8 degrees(0.3g),and on the basis of 8 degrees(0.3g)of fortification intensity multiplied by the near-field coefficient 1.5.The main contents of the thesis research are as follows:1)Using the seismic design standard calculation method to establish the calculation model of the two working conditions,from the cycle ratio,displacement angle,stiffness ratio,shear weight ratio,rigid weight ratio,axial pressure ratio,shear bearing capacity ratio of the seven indicators of the calculation results are analyzed,some of the floor between the displacement angle is too limited,can not meet the requirements of the specification.2)The reinforcement scheme design of 8 degree(0.3g)structural member bearing capacity and ductility deficiency component.By means of the reinforcement method of carbon fiber and the reinforcement method of pasted steel plate respectively,the displacement angle between X and Y directions is strengthened,and the requirements can be met by the lack of longitudinal reinforcement and the shear insufficiency.3)8 degrees(0.3g,considering the near field),the building is designed for isolation.A total of 68 kinds of rubber isolation supports with and without lead were selected,and the time-history analysis of the building isolation and non-isolation structures was carried out,and three seismic waves were taken under the action of fortified intensity earthquake.The horizontal damping coefficient of the structure is calculated to be 0.3979.The maximum compressive stress,tensile stress and maximum horizontal displacement of the isolation layer can meet the specification requirements under the action of rare earthquake.After using the isolation technology,the building can ensure the safety of the internal personnel of the structure,and has high economic benefits.Figure 39;Table 47;Reference 62...