Abstract
As a kind of destructive natural disasters, earthquake can cause serious damage to the bridges of lifeline projects, which will bring great difficulties to the rescue and relief work. The bridge structure is complex, and people pay increasingly more attention to the research on its seismic resistance. It is very important for designers and researchers to adopt an appropriate analysis method in seismic resistance analysis. This paper briefly summarizes the hazards caused by earthquakes to long-span bridges, and introduces the calculation principles of response spectrum method and time history analysis in detail. Through the comparative study of the two commonly used seismic resistance analysis methods for bridges, it summarizes the advantages and disadvantages and the application scope of each method, providing reference for selecting suitable design methods for seismic resistance design. Lastly, it describes the future research trends of response spectrum method and time history analysis.
Highlights
In recent years, devastating earthquakes occur frequently around the world, which seriously threatens the lives and property of human beings
Seismic resistance of bridges is an important part of the design process, ensuring that bridge engineering has strong seismic resistance performance and mitigates damage caused by earthquakes, which has become an issue that academics and engineering circles attach great importance to[1]
Li Zhengying[3] and others assumed that the same large-span bridge structure is under the same earthquake action, that is, when the seismic waves are the same, it is found that the seismic response calculated by the response spectrum method and the time history analysis method has a certain degree of comparability
Summary
In recent years, devastating earthquakes occur frequently around the world, which seriously threatens the lives and property of human beings. With the rapid development of science and technology and transportation, bridge engineering is an important public transportation hub of modern society, so the damage to it would cause great difficulties for post-earthquake rescue and post-disaster reconstruction and seriously affect the operation of social production, resulting in huge economic loss. In order to meet the needs of social and economic development, bridge construction in China in recent decades develops rapidly, and the correct seismic resistance design of bridge projects is a major event concerning the national economy and people’s livelihood. Seismic resistance of bridges is an important part of the design process, ensuring that bridge engineering has strong seismic resistance performance and mitigates damage caused by earthquakes, which has become an issue that academics and engineering circles attach great importance to[1]. This paper first introduces the calculation principles of the above two analytical methods, conducts comparative study on the two analytical methods, and summarizes the advantages and disadvantages and the application scope of each method, to provide reference for the selection of analysis methods of bridges’ seismic resistance design
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