The problems with traditional finite element programming ( fep ) can be solved by object - oriented programming ( oop ) , this paper introduces the implement method of object - oriented finite element programming using vc + + 6 . 0 , with an example of universal bar system analysis 传统有限元程序设计中的许多问题可以通过面向对象程序设计( oop : objectorientedprogramming )方法加以解决。本文以通用杆系结构分析程序的面向对象实现为例，介绍了作者采用visualc + + 6 . 0进行面向对象分析和设计的思路和方法。
The main research content includes : research of structure array analysis theory ; design of bridge structure analysis program ; function and introduction and test of this program . in addation , as a practice of the above program , this program is used to yichang yiling yangtze river bridge , the calculation results used with this program are compared with the results used with other program 主要研究内容包括：结构矩阵分析理论研究；桥梁结构分析程序设计；程序的功能、使用说明及考核验证；作为上述程序的实践，该程序在宜昌夷陵长江大桥中的应用，并与其它结构分析程序计算结果进行对比分析。
This thesis has made the contrast test of shrink and creep for plain concrete and concrete filled steel tubes on the basis of long term in - door test , obtains the principles of shrink - creep of concrete filled steel tube , simulates the test data , analyses and contrasts the coefficient of shrink and creep , thus offers reference for the calculation mode of creep , furthermore by introducing reasonable assuming at the same time , develops the calculation formula of equivalent elastic modulus at the same time , develops the calculation formula of equivalent elastic modulus , adopts common structure analyses procedure ansys to calculate the redistribution of section stress in the steel tube and concrete during operation 本文在长期的室内试验的基础上对素混凝土和钢管混凝土做了收缩和徐变的对比试验,得出钢管混凝土的收缩徐变规律,对试验数据进行了拟合,对钢管混凝土的收缩和徐变系数进行了分析和比较,从而为钢管混凝土的徐变计算模式提供参考,同时通过引入合理的假定,并结合由“龄期调整有效模量法”导出的混凝土徐变本构关系,推导出了钢管核心混凝土考虑徐变影响后的等效弹性模量计算公式,并以此为基础采用通用结构分析程序ansys对成桥后钢管和混凝土应力重分布进行了计算。
Traditional structured finite element programming this thesis makes partial modifications for finite , the structure analysis program developed by the object - oriented technology . using inheriting technology of class expanded the existing classes and enhanced its performance and the program has been implemented in both console platform and graphic interface environment . the paper illustrates the advantages of object - oriented finite element programming 本文在对传统的结构化有限元程序分析的基础上，针对有限元分析应用的特点，对现有的一个采用面向对象技术的结构分析程序finite进行部分修正，利用类继承技术，对已有类进行扩充，丰富其计算功能，并用visualc + + 6 . 0在控制台和图形界面下同时得以实现，进一步论证了面向对象有限元程序的优越性。
Hence , on the basis of research achievements of other countries , the mechanical characteristics of the statically indeterminate composite bridge is analyzed in this thesis by utilizing the large universal finite element software , msc / nastran and msc / patran , to promote the application and development of the composite bridge in china 为此，本文在总结各国研究成果的基础上，利用大型通用结构分析程序msc nastran和msc patran ，对超静定组合梁桥的受力特性进行了分析研究，目的是推动这一结构形式在中国的应用和发展。
As a practice of above idea and theory , this paper rewrites a structure analysis of finite element program which based on the object - oriented programming technology . using current popular visual c + + developing tool and odbc database connectivity technology , this paper develops a data management program fedms of cae software pre - processing and post - processing data . the program realizes data management using engineering database , visual i / o method and promotes the integration of cae software into civil engineering cad system 此外，作为上述理论和方法的实践，重写了一个采用面向对象技术和有限元方法的通用平面杆系结构分析程序finite ，应用当前比较流行的visualc + +开发工具的odbc数据库连接访问技术，研制了一个后台基于microsoftaccess数据库的cae软件数据前后处理系统fedms ( finiteelementdatamanagementsystem ) ，对结构分析计算中的前后处理数据进行了有效的管理。
In this paper , the finite - element numerical analysis calculation is applied to the foundation of high - rise and multi - floor building and the evolvement law of stress and displacement of tunnel used by urban traffic to explore the mutual influence between the wall rock of underground space and high - rise building foundation , taking account of the specific construction situation in the " sanmu garden " project in dadukou district in chongqing , from the perspective of underground space static - force structure stability analysis to open a underground tunnel with 6m in span and 7 . 5m in height for track traffic 20m below the surface . this paper , taking considerations of three different states , i . e . the natural state without any artificial interference , the state of high - rise buildings on the surface , and the underground tunnel state with excavation for track traffic , and four plane lines and four vertical lines , analyzes and studies the distributing law of stress and displacement of calculation section from the following aspects : ( 1 ) the main stress vectorgraph , displacement distribution graph ( ux , uy ) and chromatogram graph of stress isoline ( 1 , 2 , xy ) of section under different states ; ( 2 ) the contrastive distribution curve of stress ( 1 , 2 , xy ) of different plane and vertical lines under the same state ; ( 3 ) the contrastive distribution curve of stress ( 1 , 2 , xy ) of the same plane and vertical lines under different states , wishing to provide references for underground space utilization and project designing and construction of the tunnel under high - rise buildings in the future 本文结合重庆市大渡口区“三木花园”开发建设项目，从地下空间静力结构稳定性分析角度出发，针对在该项目中涉及的高层和多层建筑物以及在其地下20米处开挖了一个用于轨道交通的跨度6米，高7 . 5米的地下隧道这一具体工程情况，采用2d - 3d -有限元结构分析程序对高层与多层建筑物的地基基础及其与城市轨道交通使用的地下隧道围岩的应力与位移演变规律进行了有限元数值分析计算，探索了地下空间围岩与高层或多层建筑物地基基础之间的相互影响，通过考虑未受到任何人为扰动影响的天然状态、地表存在多层或高层建筑物状态和地下开挖用于轨道交通的地下隧道状态等三种不同状态以及4个水平剖线和4个垂直剖线等不同情况，从以下几个方面具体分析研究了计算断面的应力与位移分布规律： ( 1 )在各种不同状态下计算断面的主应力矢量图、位移分布图( ux 、 uy )以及应力等值线色谱图( _ 1 、 _ 2 、 _ ( xy ) )等； ( 2 )相同状态下不同水平与垂直剖线的应力_ 1 、 _ 2和_ ( xy )对比分布曲线； ( 3 )不同状态下相同水平或垂直剖线的应力_ 1 、 _ 2和_ ( xy )的对比分布曲线等，为今后在对地下空间的开发利用以及在高层建筑物地下开挖硐室时的工程设计和工程施工提供参考依据。
Adopt at present most advanced large - scale super sap finite element structure analyse procedure to go on numerical value calculation for model of drilling rod , drilling rod whole stress simulation of state that receive show and reflect drilling rod various kinds of stresses under different working states distribute the characteristic clearly , make stress state of drilling rod reach visual , make people able to understand informations of drilling rod of stress status in depth too at the same time , so that the design of the improvement drilling rod constantly is in order to meet the demands of actual project 采用当前最先进的大型supersap有限元结构分析程序对钻杆的模型进行了数值计算，得到的钻杆整体应力状态的模拟显示清楚地反映了钻杆在不同工作状态下的各种应力分布特征，同时也使钻杆的应力状态达到了可视化，使人们可以深入了解钻杆应力状态信息，以便不断的改进钻杆的设计以满足实际工程的需要。
It is not a target of this paper to develop a general structural analysis program or structural cad package . this paper put stress on the effectiveness and implement pattern of oop method in structural analysis programming . considing the time is not enough to develop a large program , the author just shown the implement of bar system analysis by oop 本文的目标不是开发一个通用的结构分析程序或结构cad软件包。本文工作的重点是探讨oop方法在结构分析程序设计中的适用性和实现模式，同时考虑到时间因素，所以本文只给出杆系结构的面向对象实现。
During construction procedure , the stressing of diaphragm beams " tendons and the tensioning of cables interact , the contacting nonlinear issues between girder and form plate etc , which require detailed analysis , arrange the orders and quantities of the stressing of the cables and tendons properly , and guide the construction . the paper , by making plane model and spacial model of yongan bridge , calculated the pre - closure cable forces ( aim forces ) with plane element program , with the help of applied structure analysis program - ansys , acquired the reasonable construction steps of tensioning of tendons and cables 本论文采用自编平面杆系施工装配计算程序和大型结构分析程序- ansys ，通过分别建立该桥的平面和空间模型(含模板的作用模拟) ，由平面杆系程序倒拆出斜拉索合拢前的索力(目标索力) ，利用ansys结构分析程序，经过多次的施工过程模拟计算之后得出达到目标索力的合理的施工步骤。
