Analysis Of Displacement Regulation And Seismic Performance Of Plane Irregular Structure

With the development of science and technology and the progress of society,people are increasingly demanding clothing,food,housing,transportation and other aspects.In the construction industry,more and more tall buildings have sprung up rapidly in the north and south of the motherland.People are more and more careful about the function of the building and the safety of the building,and there are many irregular buildings with complex structures.In recent years,the superiority of steel structure has become more and more prominent in the construction industry.As a green material,steel has been widely applied in the construction industry due to its high toughness and high flexibility.China is located in the world’s two largest seismic belt,between the circum Pacific seismic belt and the Eurasian seismic belt,and is a country with frequent earthquakes.The frequent occurrence of earthquakes will cause very serious geological disasters,which may destroy a city in a short period of time,leading to the death of the family,and the earthquake will cause many secondary disasters,resulting in huge economic loss and spiritual harm.At present,the application of steel structure and earthquake disaster response have not been popularized at present.Therefore,it is necessary to improve the seismic performance and application value of irregular steel structures by analyzing the seismic performance of irregular steel structures.Taking the tourism center of Tai’an as the project background,the building structure is modeled and analyzed by PKPM software and SAP2000 software,and the relationship between the displacement control and the seismic performance of the plane irregular structure is obtained.The main work is as follows:1.Emphasize the hazards and impacts of earthquakes,the development process and research status of irregular buildings,and explain the advantages of steel structures,the development of steel structures in China and the advantages and disadvantages of various steel structures,provide theoretical support for structural materials selection,and explain The influencing factors of the displacement and displacement angles between the layers of the structure provide a basis for the selection of subsequent design analysis solutions.2.Clarify the purpose and requirements of seismic fortification and combine seismic design of structural design.Several seismic design methods commonly used in structures are introduced: modal analysis method(feature vector method,Ritz vector method),response spectrum method(single degree of freedom system,multi-degree of freedom system),time history analysis method(Newmark method,Wilson-θ method,HHT method)and other seismic analysis theory.3.Use PKPM software to establish the structural model,introduce the method of determining the seismic level,structural importance coefficient,cycle reduction factor and constant live load information in the structural design,and calculate the load value under different usage functions.The SATWE analysis was performed on the structure to obtain the reliability of the structure determined by the data such as the stiffness ratio of the structure,the shear-to-weight ratio,and the displacement angle between layers.4.Analyze and discuss the influencing factors of the displacement of the joints in the floor discontinuity in structural design,determine four different structural layout plans,analyze the SATWE by PKPM software,and obtain the inter-story displacements and inter-story displacement angles of the structures in each plan.The influence of the scheme on the displacement between the layers of the structure and the displacement angle between the layers was compared and analyzed.Because the structure is a planar and irregular structure,the floor is not continuous at the second floor.Therefore,in each project,seventeen distinct nodes were selected from the discontinuity position of the slab,and the corresponding node displacement data was obtained for comparative analysis to discuss the influencing factors of the displacement of the node in the discontinuous position of the slab.5.Establish a structural model in SAP2000,perform modal analysis on the model,obtain modal analysis data,and verify the rationality of the structure.And select a reasonable seismic wave,effectively reduce,enter the SAP2000 software for time-history analysis,access to verify the structure of the data to meet the design requirements,optimize the design of the structure does not meet the actual requirements of the site,regain the modal analysis and timeAnalyze the data until the reliability of the structure is verified to determine the final design of the structure.