后张法预应力混凝土简支T梁承载能力分析
后张法预应力混凝土简支T梁承载能力分析(任务书,开题报告,外文翻译,论文11600字)
摘要
近年来，预应力钢筋混凝土梁由于跨越能力较大，造价较低等特点，在工程建设中广泛使用。后张法的预应力施工技术逐渐成为桥梁建设的核心技术。然而在桥梁设计中，如何有效的使用预应力经常成为设计计算中的难点，因此掌握对其承载能力分析评价显得尤为关键。本论文详细阐述了预应力混凝土的发展和现状，对预应力混凝土简支T梁承载能力的计算方法和有限元分析做了具体分析。文中介绍了预应力混凝土T梁承载能力的手算的电算方法，着重介绍了基于OpenSees的预应力混凝土构件的弹塑性分析。采用OpenSees结构分析软件建立预应力混凝土T梁的有限元分析模型，根据数据分析结果研究其承载能力特性。研究对桥梁设计具有一定的指导意义。
关键词：预应力混凝土T梁；承载能力特性；基于OpenSees有限元分析；
Abstract
In recent years, the prestressed reinforced concrete beam is widely used in engineering construction because of the characteristics of high strength and low cost. The post-tensioned prestressed construction technology has become the core technology of bridge construction. However, in bridge design, how to use the prestress often becomes the difficulty in design calculation, so it is very important to master the analysis and evaluation of its carrying capacity. This paper expounds the development and present situation of prestressed concrete, and analyzes the calculation method and finite element analysis of prestressed concrete simply supported t-beam carrying capacity. This paper introduces the computer method of the hand calculation of prestressed concrete t-beam, and emphatically introduces the elastoplastic analysis of prestressed concrete members based on open. The finite element analysis model of prestressed concrete t-beam is established by using the open software, and the bearing capacity characteristics are studied according to the results of data analysis. The research has certain guiding significance to the bridge design. [资料来源：www.doc163.com]
Key words：Prestressed concrete T - beam; load - carrying capacity characteristics; based on OpenSees finite element analysis;
[资料来源：www.doc163.com]
目录
第一章绪论 1
1.1国内外研究的现状 1
1.2论文研究主要内容 2
1.3论文研究必要性 2
第二章 OpenSees有限元分析软件 4
2.1有限元分析软件OpenSees的介绍 4
2.2、OpenSees中几个基本要点： 5
2.2.1、建模顺序 5
2.2.2、输出文件 5
2.2.3、输出格式 7
第三章有限元模型的建立与数据分析 8
[资料来源：http://www.doc163.com]
3.1建立有限元分析模型 8
3.2模型数据分析 17
3.2.1、翼缘厚度与梁承载能力之间的关系 20
3.2.2、有效预应力与梁承载能力之间的关系 22
3.2.3、钢筋的强度与梁承载能力之间的关系 24
3.3.4、混凝土种类与梁承载能力之间的关系 25
第四章预应力混凝土梁承载力计算 28
4.1预应力混凝土T梁手算过程 28
4.2分析电算与手算产生误差的原因 30
第五章结论 31
5.1论文所得结论 31
5.2研究课题展望 31
致谢 32
参考文献 33