【作者】 铁明亮；

【导师】 刘来君；

【作者基本信息】 长安大学 ， 桥梁与隧道工程， 2010， 硕士

【摘要】 二十世纪九十年代后期,欧美等发达国家在第二次世界大战结束后修建的大量基础设施逐渐进入了养护维修高峰期。由此引发的经济损失、舆论压力等多种问题引起了桥梁工程界的重视,相关研究工作全面展开,寿命周期分析方法在国际上逐步发展起来。受到国际上有关全寿命研究的启发,桥梁工程全寿命的概念迅速在国内工程界得到重视。2009年,由中交公路规划设计院、同济大学、长安大学、北京工业大学联合承担的交通部西部交通科技项目“桥梁工程全寿命设计理论与方法研究”正式通过交通部专家组鉴定验收,并被评为中交股份科技进步特等奖。本文作为西部交通建设科技项目“桥梁工程全寿命设计理论与方法研究”的一个组成部分,以河南省四条国道省道桥梁调查统计资料为基础,其主要研究内容如下：1.以板式橡胶伸缩装置为例建立有限元模型,应用疲劳累积损伤理论对其进行疲劳破坏分析正常使用的寿命估算,给出板式橡胶伸缩装置使用寿命的建议值。2.以橡胶支座和钢支座为例,分别应用橡胶老化理论和疲劳试验对其进行正常使用的寿命估算。通过橡胶老化理论给出橡胶支座理论寿命,通过疲劳试验给出了钢支座的疲劳寿命。3.从全寿命的角度出发,研究讨论了伸缩装置与支座的耐久性、可修性、可换性设计,给出了伸缩装置与支座的施工工艺和养护注意事项。通过以上研究得出：应从规划、设计、施工、管养、拆除等五个阶段,全面分析研究桥梁构件的全寿命历程。嵌固对接式伸缩装置耐久性明显优于其它类型伸缩装置,是因为其设计相对比较合理。板式橡胶伸缩装置的正常设计使用寿命受限于锚固区混凝土的疲劳寿命,大约为13年。橡胶支座的设计使用寿命建议值为50年。钢支座的疲劳寿命——不疲劳(即能达到其设计年限)。更多还原

【Abstract】 On later stage of 1990s, a large amount of infrastructure built after the developed country is in World WarⅡwas finished in America and Europe entered the peak period of maintaining gradually. Therefore many kinds of questions such as economic losses, pressure of public opinion initiated have caused the attention of bridge engineering world, relevant research work launch in an all-round way, the analytical method of life cycle is developed progressively in the world.In the world about the whole life-span inspiration that study, bridge engineering world pay attention to the whole concept of life-span in domestic project circle rapidly. In 2009, the scientific and technological project "the design theory of the whole life-span of science of bridge building and method research" of western traffic, undertaken by the China Highway Planning and Design Institute, Tongji University, Chang’an University, Beijing University, obtained the official identification of acceptance by the Ministry of Communications Expert Group, and got the scientific and technological progress special grand prize.of China Communications Construction Co., Ltd.This text is regarded as the western scientific and technological project of traffic construction "The design theory of the whole life-span of science of bridge building and method research "One piece component. Investigate the statistical data as the foundation with four bridges of provincial highway of national road of Henan Province, The main contents are as follows:1.Take rubbery expansion joint as an example and set up the finite element model, employ and accumulate the theory of damaging to destroy and analyze the life-span used to their tiredly normally to estimate tiredly, provide the suggestion value of service life of rubbery expansion joint.2.Take rubber bearing and steel bearing as example, employ rubbery aging theory and tired to test, estimate to life-span used. Provide rubber bearing the theory life-span of seats through the rubbery aging theory, has tapped to the fatigue life of the steel bearing through the tired test.3.Proceed from angle of the whole life-span, discussed durability, can building, can changing design of expansion joint and bearing, provide its construction craft and maintain attentive matters.Can work out through the above research:Should be from planning, design, construction, maintenance, dismantlement for five stages, analyse and research the whole life-span course of the component of the bridge in an all-round way. It is more rational of retractor device of built-in butted bridge, durability is obviously superior to the expansion joint of other types. Normal design service life of rubbery expansion joint limited to fatigue life of concrete, it was probably 13. The proposing value of service life of design was 50 of rubber bearing. The fatigue life of steel bearing is non-tired (Can reach its service life of design).更多还原