基于SAP2000的大型结构可靠度分析

发布时间：2018-04-11 18:01

本文选题：大型结构可靠度 + SAP2000　；参考：《大连理工大学》2013年硕士论文

【摘要】：结构可靠度设计是目前结构设计理论发展的重要方向之一。大型结构组成复杂,很多情况下可靠度分析的功能函数是非线性且隐式的,采用传统的方法进行可靠度分析有一定困难。本文实现了可靠度计算与SAP2000软件的联接,对三种典型的大型结构进行了基于变形的可靠度研究。主要内容总结如下： (1)介绍了结构可靠度指标的通用计算方法和SAP2000的二次开发技术。在此基础上将两者结合起来提出一种针对大型结构的可靠度分析方法,该方法合理利用了SAP2000软件强大的有限元分析功能。通过算例验证了该方法的正确性。 (2)介绍了Pushover方法的原理,对框架结构的Pushover分析进行了抗震可靠度研究。其重可靠指标计算程序采用FORTRAN语言编写,目标位移采用能力谱法计算,Pushover曲线通过SAP2000软件分析输出,SAP2000的一次开发实现了FORTRAN程序对SAP2000的调用。最后用一个算例阐述了基于Pushover的抗震可靠度分析过程。 (3)介绍了网架结构的荷载计算和支座的设计。通过Matlab编程将用MSTCAD设计好的网架导入到SAP2000中；对网架结构进行了正常使用极限状态下的可靠度分析。其中可靠指标通过FORTRAN语言编程计算,网架挠度通过SAP2000软件分析输出。SAP2000的二次开发实现了SAP2000挠度分析参与到可靠度迭代计算中。最后用一个算例说明了网架结构的设计和可靠度分析过程。 (4)介绍了采用SAP2000进行苏通大桥建模的要点；对苏通大桥进行了主梁正常使用极限状态下的可靠度分析。其中可靠指标通过FORTRAN语言编程计算,斜拉桥的挠度通过SAP2000软件分析输出。SAP2000的二次开发使得SAP2000的挠度计算参与到可靠度迭代计算中。
[Abstract]:Structural reliability design is one of the important directions in the development of structural design theory.In many cases, the function function of reliability analysis is nonlinear and implicit, so it is difficult to use the traditional method to analyze reliability.In this paper, the reliability calculation is connected with SAP2000 software, and the deformation-based reliability of three typical large structures is studied.The main contents are summarized as follows:The general calculation method of structural reliability index and the secondary development technology of SAP2000 are introduced.On this basis, a reliability analysis method for large structures is proposed by combining the two methods. This method makes reasonable use of the powerful finite element analysis function of SAP2000 software.The correctness of the method is verified by an example.The principle of Pushover method is introduced, and the seismic reliability of Pushover analysis of frame structure is studied.The calculation program of heavy reliability index is written in FORTRAN language, and the ability spectrum method is used to calculate the pushover curve of target displacement. The transfer of FORTRAN program to SAP2000 is realized by a development of SAP2000 software to analyze the output of SAP2000.Finally, an example is given to illustrate the process of seismic reliability analysis based on Pushover.The load calculation and support design of grid structure are introduced.The grid designed by MSTCAD is imported into SAP2000 by Matlab programming, and the reliability of the grid structure under the limit state of normal use is analyzed.The reliability index is calculated by FORTRAN language, and the grid deflection is realized by the secondary development of SAP2000 software output. SAP2000. SAP2000 deflection analysis takes part in the calculation of reliability iteration.Finally, an example is given to illustrate the design and reliability analysis of the grid structure.The main points of modeling Sutong Bridge with SAP2000 are introduced, and the reliability analysis of Sutong Bridge under the limit condition of normal use of main girder is carried out.The reliability index is calculated by FORTRAN language, and the deflection of cable-stayed bridge is calculated by the secondary development of SAP2000 software analysis output. SAP2000 makes the deflection calculation of SAP2000 participate in the calculation of reliability iteration.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU311.2

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