【作者】 王伟；

【导师】 黄才良； 潘盛山；

【作者基本信息】 大连理工大学 ， 桥梁与隧道工程， 2010， 硕士

【摘要】 索塔拉索锚固区受力集中、构造复杂,是斜拉桥设计和施工的难点和关键,掌握锚固区的应力分布情况是十分重要的。不但要通过模型试验来对其进行研究,而且在进行试验之前还要对其进行有限元分析。有限元分析的结果可以用于指导试验,同时有限元分析可以变化参数进行参数研究,以弥补试验的不足。现代斜拉桥在满足功能要求的前提下,也更加注重景观设计,这也就限制了索塔锚固区的截面尺寸。因此,一些传统的索塔锚固方案也就无法满足实际工程的要求。针对中小跨径斜拉桥索塔锚固区截面尺寸较小的问题,本文以大连红星海世界观项目二号景观桥为背景,提出三种索塔锚固区方案,利用大型通用有限元软件ANSYS分别对其进行详细的有限元分析,从各个方面对三种方案进行比较,并提出了相关建议。本文通过分析,得出了一些有价值的规律,为今后类似锚固区的设计、施工及桥梁监控提供了一定的参考价值。更多还原

【Abstract】 The anchorage zone of the pylon, which bears giant cable forces and has complicated structure, is a key part for cable-stayed bridges. It is important to know the stress distribution of anchorage zones well. Not only is the model test a useful method to deal with this problem, but also the finite element is important to do with it before the model test. The finite element method is able to improve the model test and makes up the deficiency of it. Modern cable-stayed bridges not only meet the needs of the function, but also attach importance to the landscape design,so it restricts the sectional dimension of the anchorage. And some orthodox anchor manners were not used in actual projects.Due to the small dimension of the anchorage of the mid-small span cable-stayed bridges, this paper is based on the 2nd bridge of the project in Dalian worldview, putting forth three characters, and analyses the stress distribution of the anchorage zones and lower tower using the finite element software ANSYS.The three characters are compared in some aspects, and some correlative suggests are raised.With the analysis of the results, some valuable rules were got and can be used for reference in design, construction, monitor and control of the cable-stayed bridge for homothetic anchorage zones.更多还原