钢筋混凝土拱桥检测与加固技术研究-市政工程专业论文.docxVIP

钢筋混凝土拱桥检测与加固技术研究摘要 钢筋混凝土拱桥检测与加固技术研究 摘要 桥梁是重要的交通设施之一。随着交通事业的发展和科学技术的进步，桥 梁检测得到了日益广泛的重视。桥梁检测在评定现有桥梁的实际承载能力、建 立和积累必要的桥梁技术资料、推动和发展旧桥评定理论及新桥设计理论等方 面都有着重要的意义。为了正确评价现有桥梁的实际承载能力与安全度，并采 用合理的加固、维修方法，应尽早地对桥梁进行检查，并发现其产生地损坏及 异常现象，正确地检定结构物地损坏程度。自上个世纪40年代以来，有限元方 法在科学研究和工程分析中逐渐占据了重要的地位，已经成为数值计算的主流。 钢筋混凝土拱桥在我国有着非常广泛地应用。本文详细论述了拱桥结构检 测的原理、方法和内容，同时依托工程实例作了具体介绍并给出结果。最后， 提出了几种拱桥的加固方法。 关键词：钢筋混凝土拱桥承载力静载试验动载试验加固技术 Study Study on Detection and Strengthening Technology of RC Arch Bridge Abstract Bridges one of the facilities of transportation．With the development of traffic and the advancement oftechnology,the detection ofbridge is considered to be more and more importam．Its main signification expresses in the applications as follows：assess of actual carrying capacity of existing bridges，foundation of technical information of bridges，and developments of the assess theories of old bridges and design theories of new bridges．For evaluating the actual loads and safety factors of the existing bridges and adopting rational remedy methods，it is necessary to detect the damage，abnormalities as early as possible，and assess the degree of the structural damage．Since 1 940s，finite element method(FEM) gradually holds the important roles in scientific research and engineering analysis． RC arch bridges arc widely used in our country．In details，this paper discusses the principle，method and content of structural detection of RC arch bridge．At the sanle time，the author takes one RC arch bridge as the example，and exposes its factual results of detection．Finally,it offers several methods of strengthening existing RC arch bridges． Keywords：RC arch bridge，load capacity,static loading experiment，dynamic loading experiment，method of strengthening bridge． 插图清单图1．1 插图清单 图1．1 拱桥的主要组成部分 ， ．． ， 图l-2 桥面位置分类 ： ．． 6 图】．3 简单体系拱桥 6 图2．1 荷载一应变状态示意图 l 2 图2．2 截面应力应变测试布置与分析圈 一 ．1 2 图2．3 应变花测试布置示意图 一 ．．．．