摘 要
管道運(yùn)輸是現(xiàn)有石油天然氣運(yùn)輸方式中最安全、最經(jīng)濟(jì)，對(duì)環(huán)境破壞最小的運(yùn)輸方式。但是目前的地下管道設(shè)計(jì)和防護(hù)方法仍存在許多不足。一些埋地管道在使用中經(jīng)常損壞、泄漏以致花大量的人力物力去維修，顯然這種狀況與地下管線的發(fā)展前景是不相適應(yīng)的。因此，本文對(duì)埋地長(zhǎng)輸管線結(jié)構(gòu)的受力與變形特性等進(jìn)行了分析。
文中使用了彈性力學(xué)方法對(duì)埋地長(zhǎng)輸管線受內(nèi)部壓力作用時(shí)的力學(xué)特性進(jìn)行了分析，求解出了埋地長(zhǎng)輸管線在受內(nèi)部壓力時(shí)的應(yīng)力分量、形變分量和位移分量，并利用第四強(qiáng)度理論對(duì)埋地長(zhǎng)輸管線在受內(nèi)部壓力時(shí)的危險(xiǎn)點(diǎn)進(jìn)行了強(qiáng)度校核。
本文應(yīng)用MATLAB7.0軟件對(duì)所求出的結(jié)果進(jìn)行了數(shù)值分析，并且利用MATLAB7.0中的GUIDE工具編制了一個(gè)計(jì)算埋地長(zhǎng)輸管線的應(yīng)力分量以及校核危險(xiǎn)點(diǎn)的應(yīng)用程序。
本文提出的研究方法和成果，可為埋地長(zhǎng)輸管線的強(qiáng)度設(shè)計(jì)提供一個(gè)理論依據(jù)和一個(gè)實(shí)用的軟件計(jì)算方法。

關(guān)鍵詞 埋地長(zhǎng)輸管線 彈性分析MATLAB 強(qiáng)度校核 應(yīng)力分量

Abstract
Pipeline transportation is the mode of transport for oil and natural gas existing in the safest, most economic, environmental damage is minimized. However, the underground pipeline design and protection methods still lack, Of buried pipeline, the mechanical characteristics of the analysis has been calculated accurately. A number of buried pipeline in the use frequently damaged, resulting in leakage of spend a lot of manpower and resources to maintenance, Clearly this state of affairs and prospects for the development of underground pipeline is incompatible. Therefore, this article on long-distance pipeline buried in the structure of the force and deformation are analyzed.
In this paper, I use the elasticity approach to long-distance pipeline buried by the role of internal pressure of the mechanical properties were discussed. Solving a long-distance pipeline buried in the internal pressure of the stress components, deformation and displacement of the weight component. The fourth strength theory and the use of long-distance pipeline buried in the risk of internal pressure when the intensity of checking points.
Papers use MATLAB7.0 software applications of the results obtained by the numerical analysis. And the use of the GUIDE tools MATLAB7.0 produced a calculation of long-distance pipeline buried the stress components as well as the danger point calibration applications.
This paper presents the research methods and results, buried for the strength of long-distance pipeline design to provide a theoretical basis and a practical calculation software.

Key words Buried Pipeline Elastic analysis MATLAB Strength Check Stress component

目錄
摘 要 I
ABSTRACT II
第1章 緒論 1
1.1研究背景及研究目的 1
1.2國(guó)內(nèi)外研究現(xiàn)狀 2
1.3本文研究的主要內(nèi)容 6
第2章 彈性力學(xué)基本原理 7
2.1彈性力學(xué)基本假設(shè) 7
2.2平面問題的基本理論 8
2.2.1平面應(yīng)力問題 8
2.2.2平面應(yīng)變問題 8
2.3彈性力學(xué)基本方程 9
2.3.1平衡微分方程 9
2.3.2幾何方程及物理方程 10
2.3.3應(yīng)力函數(shù)與相容方程 11
2.4圣維南原理 14
2.5應(yīng)力分量的坐標(biāo)變換式 14
2.6本章小結(jié) 15
第3章 埋地長(zhǎng)輸管線彈性分析 16
3.1埋地長(zhǎng)輸管線的計(jì)算模型 16
3.2埋地長(zhǎng)輸管線的彈性分析 17
3.3埋地長(zhǎng)輸管線的彈性力學(xué)解答 20
3.3.1埋地長(zhǎng)輸管線的應(yīng)力分量 21
3.3.2埋地長(zhǎng)輸管線的形變分量 24
3.3.3埋地長(zhǎng)輸管線的位移分量 25
3.4工程實(shí)例計(jì)算 25
3.4.1計(jì)算模型 27
3.4.2應(yīng)力分量求解 27
3.4.3坐標(biāo)變換 28
3.4.4強(qiáng)度校核 28
3.5本章小結(jié) 31
第4章 埋地長(zhǎng)輸管線的程序設(shè)計(jì) 32
4.1MATLAB軟件的簡(jiǎn)介 32
4.2 MATLAB程序設(shè)計(jì) 33
4.3數(shù)值分析解與理論解的對(duì)比及分析 38
4.4本章小結(jié) 42
結(jié)論 43
致謝 44
參考文獻(xiàn) 45
附錄1 47
附錄2 56