本文關(guān)鍵詞：大跨度懸索橋施工控制有限元程序設(shè)計(jì)　出處：《長(zhǎng)沙理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 大跨度懸索橋 程序設(shè)計(jì) 有限元 剛度矩陣 幾何非線性

【摘要】：大跨度懸索橋的施工需要詳細(xì)的計(jì)算數(shù)據(jù)提供理論支持,這就需要一套能夠計(jì)算懸索橋施工過程中的各項(xiàng)必要參數(shù)的軟件代替人工進(jìn)行數(shù)據(jù)計(jì)算。本文針對(duì)大跨度懸索橋?qū)儆诘湫偷娜嵝越Y(jié)構(gòu)體系,以及在受力表現(xiàn)出來的幾何非線性的特性,在學(xué)習(xí)了一些比較先進(jìn)的懸索橋計(jì)算理論以及計(jì)算程序的編制原理的基礎(chǔ)上,設(shè)計(jì)了使用有非線性限元方法計(jì)算分析大跨度懸索橋的程序。本程序中將懸索橋離散成梁?jiǎn)卧�、桿單元、索單元,通過非線性有限元法進(jìn)行計(jì)算,從而為橋梁施工提供監(jiān)控?cái)?shù)據(jù)支持。本文主要工作內(nèi)容如下：(1)本文介紹了有關(guān)懸索橋的發(fā)展情況、分類方式、適用范圍以及計(jì)算理論的發(fā)展過程；介紹了有限元分析的基本思路以及其在計(jì)算方面的優(yōu)勢(shì)；介紹了懸索橋表現(xiàn)出幾何非線性的原因及其影響因素；進(jìn)行了三種形式的單元?jiǎng)偠染仃嚨耐茖?dǎo),以及懸索橋剛度方程計(jì)算理論的發(fā)展過程和各種計(jì)算方式的優(yōu)劣勢(shì)對(duì)比,還有收斂標(biāo)準(zhǔn)的確立方式等。(2)簡(jiǎn)述懸索橋的施工過程；基于有限元的分析方式,探討了如何對(duì)懸索橋主要結(jié)構(gòu)進(jìn)行模擬及計(jì)算；對(duì)懸索橋在恒載作用下的幾何線性及內(nèi)力如何求解進(jìn)行了闡述；對(duì)懸索橋加勁梁吊裝過程進(jìn)行了非線性分析；對(duì)懸索橋結(jié)構(gòu)的形成過程進(jìn)行了模擬分析。(3)根據(jù)有限元分析理論,介紹了使用fortran語(yǔ)言進(jìn)行懸索橋施工控制計(jì)算程序的設(shè)計(jì)形式和設(shè)計(jì)過程；闡述了本大跨度懸索橋施工控制有限元程序的具體設(shè)計(jì)思路和設(shè)計(jì)過程；編制出懸索橋加勁梁架設(shè)過程計(jì)算程序的諸多子程序模塊并進(jìn)行了調(diào)試和驗(yàn)證；最后使用已有計(jì)算軟件midas對(duì)懸索橋工程實(shí)例進(jìn)行計(jì)算分析,將計(jì)算結(jié)果和參考文獻(xiàn)中的已有數(shù)據(jù)進(jìn)行對(duì)比,從側(cè)面對(duì)本程序的計(jì)算結(jié)果的形式進(jìn)行佐證。通過本文的工作得出了一些進(jìn)行橋梁有限元計(jì)算程序的編制思路和方法,從而為施工控制中各種線性、內(nèi)力等參數(shù)的計(jì)算帶來便利。
[Abstract]:The construction of long-span suspension bridge needs detailed calculation data to provide theoretical support. This requires a set of software to calculate the necessary parameters of the suspension bridge in the construction process instead of manual data calculation. The long-span suspension bridge is a typical flexible structure system. And on the basis of studying some advanced theories of suspension bridge calculation and the programming principle of calculation program, the geometrical nonlinear characteristics of the force are shown. A program for calculating and analyzing long-span suspension bridge with nonlinear finite element method is designed. In this program, the suspension bridge is discretized into beam element, bar element and cable element, and calculated by nonlinear finite element method. The main contents of this paper are as follows: 1) this paper introduces the development of suspension bridges, classification methods, applicable range and the development process of calculation theory. The basic idea of finite element analysis and its advantages in calculation are introduced. The causes and influencing factors of geometric nonlinearity of suspension bridges are introduced. Three forms of element stiffness matrix are derived, and the development process of stiffness equation calculation theory of suspension bridge and the advantages and disadvantages of various calculation methods are compared. The construction process of suspension bridge is briefly described. Based on the finite element analysis method, how to simulate and calculate the main structure of suspension bridge is discussed. How to solve the geometric linearity and internal force of suspension bridge under dead load is expounded. Nonlinear analysis of hoisting process of stiffened beam of suspension bridge is carried out. Based on the theory of finite element analysis, this paper introduces the design form and design process of the calculation program of suspension bridge construction control using fortran language. The concrete design idea and design process of the finite element program for the construction control of the long-span suspension bridge are expounded. Many subroutine modules of the calculation program for the erection process of the stiffened beam of suspension bridge are worked out and debugged and verified. Finally, the existing calculation software midas is used to calculate and analyze the suspension bridge engineering case, and the calculation results are compared with the existing data in the references. The form of calculation results of this program is verified from the side. Through the work of this paper, some programming ideas and methods for the bridge finite element calculation program are obtained, thus various kinds of linearity in construction control are obtained. The calculation of internal force and other parameters brings convenience.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U445.4;U448.25

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 唐建民,趙引,吳黎華;基于歐拉描述的兩節(jié)點(diǎn)索單元非線性有限元法[J];上海力學(xué);1999年01期

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本文編號(hào)：1432302