The Structure Design And Seismic Analysis Of A Storage Shed With An Over-limit Span Grid Frame

At present,with the continuous progress of engineering construction technology at home and abroad,more and more special-shaped and large-span buildings are continuously constructed.As an important type selection of public buildings and industrial production buildings,large-span spatial structure has been developed rapidly in recent years,among which the large-span grid structure studied in this project is one of the important structural forms.Based on the research of large-span spatial structure literature at home and abroad,this paper studies the basic theory of long-span space truss structure design and earthquake resistance,and carries out specific research on the design and anti-seismic content with the actual case of 150 m super large-span arc-shaped grid structure of domestic a company,and uses the classical seismic analysis method to verify the reliability of structural design.The main contents of this paper are as follows:(1)This paper discusses the development process and research results of large-span space structure at home and abroad,and summarizes the shortcomings of domestic and foreign large-span space structure research.(2)This paper analyzes the basic concept of space truss structure design,such as structural characteristics,structural selection,structural design points,etc.,and discusses the calculation and seismic analysis method of long-span grid structure.This paper mainly discusses the methods of static and dynamic seismic analysis of large space grid structure,which provides theoretical basis for the study of practical engineering cases in this paper.(3)This paper studies the actual case of a company’s 150 m super long-span arc-shaped space truss project,and studies the design conditions,model construction,parameter setting,structural calculation,etc.,and focuses on the structural modal analysis and its dynamic characteristics,so as to provide conditions for further research on structural seismic performance.At the same time,through the use of structural bearings,rubber pad bearings are optimized to improve the structural safety and economy.(4)The displacement and internal force of the structure are calculated and analyzed by means of mode decomposition response spectrum method and time history analysis method,and the reliability of seismic design of the structure is verified.The research object of this paper is the 150 m arc-shaped grid structure which is beyond the standard limit.It has the characteristics of unique structural form,difficult design and complex structural seismic analysis.As a rare engineering case in China,it is hoped that through the research of this topic,it can provide reference for the design and check of similar super long-span structures.