中欧钢筋及预应力混凝土梁桥设计规范对比研究

发布时间：2018-02-16 03:02

本文关键词： 欧洲规范桥梁设计规范规范对比荷载效应汽车荷载 PC梁桥　出处：《东南大学》2015年硕士论文　论文类型：学位论文

【摘要】：桥梁作为公路工程的枢纽,在国民经济中占有重要地位,其安全性和经济性对社会财富和国有资产有着直接的影响。桥梁设计规范是工程技术人员开展设计工作的依据,是评判桥梁结构安全性和适用性的标准。随着建筑服务贸易自由化和国际化的不断推进,以及“一带一路”战略的实施,越来越多的工程建设企业开始致力于对国外相关规范的研究工作。本论文是中国路桥工程有限责任公司科研项目——“中外公路桥梁设计规范对比研究”的主要内容之一。针对中、欧桥梁规范中的设计准则、材料、荷载及作用效应组合、承载能力极限状态、正常使用极限状态等方面的内容进行了全面地分析对比。通过对我国交通运输部颁的通用图中的19座常用典型桥梁的计算、分析和对比,分别从作用效应、承载力、承载力／作用效应等角度论述了中、欧桥梁规范的安全性和经济性差异。主要完成的工作内容如下：首先,论文阐述了中、欧桥梁设计规范关于设计准则、极限状态计算方法及可靠度指标的相关规定；归纳总结了中、欧桥梁设计规范中材料强度指标、荷载效应及其组合方式以及相关系数取值等内容；着重论述了中、欧桥梁规范中汽车荷载计算模式和预应力损失计算方法的差异。其次,运用Midas/Civil 8.2.1有限元分析软件建立了19座样本桥梁的有限元分析模型,分别按照中、欧桥梁规范的规定确定设计参数,对承载能力极限状态和正常使用极限状态进行计算分析,得到了作用效应、截面承载力、应力及挠度等计算数据。最后,根据程序计算的结果,综合对比了中、欧荷载效应、截面承载力以及截面承载力与荷载效应的比值,分析论述了两本规范的经济性差异,得出了按欧洲桥梁规范进行设计更具经济性优势的结论。提供了一座4×30m连续梁桥的计算实例。本文的研究方法和结论对国内路桥企业参与海外项目的竞争,具有一定的参考和应用价值。
[Abstract]:As the hub of highway engineering, bridge plays an important role in the national economy, and its safety and economy have a direct impact on social wealth and state-owned assets. It is the standard to judge the safety and applicability of bridge structure. With the development of liberalization and internationalization of trade in construction services, and the implementation of "Belt and Road" strategy, More and more engineering construction enterprises begin to devote themselves to the research work of related codes abroad. This paper is one of the main contents of the research project of China Road and Bridge Engineering Co., Ltd. "the Comparative study of Chinese and Foreign Highway and Bridge Design Code". Design criteria, materials, load and action effect combinations, ultimate load-carrying capacity states in the European Bridge Code, Through the calculation, analysis and comparison of the 19 typical bridges in the general map issued by the Ministry of Transport of China, the effects and bearing capacity of the bridges are analyzed and compared respectively. The difference of safety and economy between China and Europe is discussed from the view of bearing capacity / action effect. The main work accomplished is as follows: first, the design criterion of bridge design code in China and Europe is expounded. The calculation method of limit state and the related provisions of reliability index are summarized. The material strength index, load effect and its combination mode, and correlation coefficient are summarized in the design code of bridge in Europe and China. The difference between vehicle load calculation model and prestress loss calculation method in European Bridge Code. Secondly, the finite element analysis model of 19 sample bridges is established by using Midas/Civil 8.2.1 finite element analysis software. The design parameters are determined according to the specifications of the European Bridge Code, and the calculation and analysis of the ultimate state of bearing capacity and the limit state of normal use are carried out, and the calculated data such as the effect of action, the bearing capacity of section, the stress and deflection are obtained. According to the results of the program, the paper comprehensively compares the load effect between Europe and China, the bearing capacity of section and the ratio of bearing capacity of section to load effect, and analyzes the economic difference between the two codes. It is concluded that the design is more economical according to the European Bridge Code. An example of a 4 脳 30m continuous beam bridge is provided. The research methods and conclusions in this paper are helpful to the competition of domestic road and bridge enterprises in overseas projects. It has certain reference and application value.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U448.35

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