| In recent decades,earthquakes have occurred frequently in China,and every earthquake has caused casualties and unpredictable economic losses.Due to the release of the fifth generation of China Earthquake Parameter Zoning Map,the intensity of fortification in some areas will be improved,and the existing buildings will increase greatly due to earthquakes,resulting in a serious shortage of seismic capacity of buildings and displacement deformation of structures.Therefore,it is particularly important to evaluate and reinforce the seismic performance of existing buildings to ensure the safety of people’s property and minimize earthquake losses.The advantages and failure mechanism of steel structure and the status quo of seismic identification and reinforcement are introduced.Then the details of reliability identification and seismic identification are introduced in detail.The evaluation contents of multi-rise steel structure identification are introduced in detail.After the identification,the general reinforcement technology and shock absorption technology of the steel structure are explained.Taking the steel structure office building as an example,YJK is used to model the superstructure,and the steel structure parameters are introduced.Subsequently,seismic identification was carried out.The seismic identification was carried out again.Due to the large increase in seismic action and the support of a large number of damages,the shock absorbing reinforcement scheme was adopted,and three schemes were used for shock absorbing reinforcement.The first and second reinforcement schemes were mainly added near the external support of the steel structure.Damper,the third reinforcement scheme adds a damper inside the steel structure,and the reinforcement is based on the parameters such as energy consumption and displacement angle,and the shock absorption effect is good and economical and reasonable as the final solution.Figure 75;Table 42;Reference 40... |
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