本文選題：中、小跨徑連續(xù)梁橋　切入點(diǎn)：地震響應(yīng)　出處：《長(zhǎng)安大學(xué)》2014年碩士論文

【摘要】：本文以一座中、小跨徑連續(xù)梁橋?yàn)檠芯繉?duì)象，在論述橋梁抗震理論、抗震計(jì)算方法與結(jié)構(gòu)動(dòng)力特性計(jì)算方法的基礎(chǔ)上，，建立橋梁有限元模型，對(duì)結(jié)構(gòu)進(jìn)行了動(dòng)力特性分析。并分別在E1、E2水準(zhǔn)的地震作用下采用反應(yīng)譜與時(shí)程分析方法對(duì)橋梁進(jìn)行地震響應(yīng)分析，獲得了中、小跨徑連續(xù)梁橋動(dòng)力性能及地震響應(yīng)的基本特性。 本文主要研究工作如下： 1．第一章對(duì)本課題的研究意義及背景進(jìn)行分析論述，在此基礎(chǔ)上，總結(jié)了橋梁地震響應(yīng)的常見(jiàn)震害及抗震設(shè)計(jì)內(nèi)容與方法，總結(jié)了國(guó)內(nèi)外對(duì)于橋梁地震響應(yīng)分析的研究現(xiàn)狀。 2．第二章歸納了當(dāng)今橋梁結(jié)構(gòu)地震響應(yīng)分析的幾種基本理論方法與分析計(jì)算過(guò)程，包括靜力法，彈塑性分析法，反應(yīng)譜分析法，動(dòng)態(tài)時(shí)程分析法等。 3．第三章首先歸納了橋梁結(jié)構(gòu)振動(dòng)的有限元基本分析方法，之后基于中小跨徑橋梁的工程實(shí)例，建立了結(jié)構(gòu)動(dòng)力有限元計(jì)算模型，求得了結(jié)構(gòu)的振型和相應(yīng)的頻率、周期等結(jié)構(gòu)動(dòng)力行為參數(shù)，并對(duì)計(jì)算結(jié)果進(jìn)行了分析，獲得了中、小跨徑連續(xù)梁橋的一些動(dòng)力特性結(jié)論。 4．第四章基于已建立的有限元模型，采用反應(yīng)譜分析與時(shí)程分析的計(jì)算方法，對(duì)結(jié)構(gòu)進(jìn)行了地震響應(yīng)分析，獲得了中、小跨徑橋梁典型地震響應(yīng)特征。將地震分析的結(jié)果與規(guī)范值進(jìn)行比較分析，進(jìn)行了結(jié)構(gòu)抗震安全性研究。 5．根據(jù)以上理論的闡述和實(shí)際工程的計(jì)算，最后提出一些相應(yīng)的結(jié)論和建議，為實(shí)際工程中的地震相應(yīng)分析和安全結(jié)構(gòu)設(shè)計(jì)提供理論基礎(chǔ)和計(jì)算依據(jù)。
[Abstract]:This paper takes a small span, continuous girder bridge as the research object, discusses the calculation method of bridge seismic theory, method and structure of dynamic characteristics of seismic calculation, establishes finite element model, the dynamic characteristics are analyzed. And in E1, the method of bridge seismic response spectrum analysis and time history the earthquake response analysis of E2 level under ground, obtained in small span continuous beam bridge dynamic characteristics and seismic response characteristics.
The main research work in this paper is as follows:
1., the first chapter analyzes and discusses the research significance and background of the subject. On this basis, summarizes the contents and methods of common earthquake damage and aseismic design for bridge seismic response, and summarizes the research status of bridge seismic response at home and abroad.
2., the second chapter summarizes several basic theoretical methods and analysis processes of seismic response analysis of bridge structures, including static method, elastoplastic analysis method, response spectrum analysis method, dynamic time history analysis method, etc.
3. the third chapter summarizes the basic finite element analysis method of bridge structure vibration, after small and Medium Span Bridges Based on the engineering examples, a dynamic finite element model, the modal structure and the corresponding frequency is obtained, the dynamic behavior of periodic structure parameters, and the results are analyzed and obtained. Conclusion some dynamic characteristics of small span continuous beam bridge.
4. the fourth chapter based on the established finite element model, the calculation method of response spectrum and time history analysis, the structure of the seismic response analysis, obtained in the small span bridge typical seismic response characteristics. The seismic analysis results and standard value for comparative analysis, and do research on the safety of structures.
5., according to the above theory and the calculation of actual project, finally, it puts forward some corresponding conclusions and suggestions, providing theoretical basis and calculation basis for the corresponding analysis and safety structure design in actual engineering.

【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U442.55

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相關(guān)期刊論文 前3條

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本文編號(hào)：1729117