自锚式悬索桥施工过程与控制研究

发布时间：2018-12-20 16:52

【摘要】：悬索桥结构具有受力性能好、跨越能力大、轻巧美观、抗震能力强、结构形式多样及对地形适应能力好等特点,在许多跨越大江大河、高山峡谷、海湾港口等交通障碍物时,往往作为首选的桥型。但一般常规式的地锚式悬索桥,需要建造体积庞大的锚锭来锚固主缆,这就造成在地质情况差的地方,锚锭结构的基础工程量非常大,往往成为工程的难点;地锚式悬索桥锚锭和锚锭基础占用工程造价相当大的部分,成为影响悬索桥结构经济性的重要因素;在城市地区或旅游区,修建体积庞大的锚锭,对环境美观也会产生负面影响。因此,在一些跨度要求不是太大的地方,自锚式悬索桥方案由于结构新颖、外形美观成为具有竞争力的桥型方案。鉴于国内自锚式悬索桥的迅速发展和被大量设计采用,以及研究方面的滞后,本研究拟对自锚式悬索桥施工过程中的几项关键技术进行深入研究,填补该地区自锚式悬索桥施工控制理论和方法上的空白,进一步完善国内已有自锚式悬索桥设计理论和施工方法。本研究的内容主要包括:悬索桥非线性分析理论和方法研究、索股架设关键技术研究和吊杆张拉关键技术研究,并提出最优调整方案。
[Abstract]:The suspension bridge structure has the characteristics of good mechanical performance, large span ability, light and beautiful, strong seismic ability, various forms of structure and good ability to adapt to the topography, etc., when many traffic obstacles such as big rivers, mountain canyons, gulf ports and other traffic obstacles are crossed, Often as the preferred bridge type. However, the conventional ground anchor suspension bridge needs to build a large volume of anchor ingots to anchor the main cable, which results in a very large amount of foundation works of the anchor ingot structure, which often becomes a difficult point in the engineering where the geological conditions are poor. Anchorage ingot and anchor ingot foundation of ground anchor suspension bridge occupy a large part of project cost, and become important factors that affect the structure economy of suspension bridge. In urban areas or tourist areas, the construction of large anchor ingots can also have a negative impact on environmental beauty. Therefore, in some places where the span requirement is not too large, the self-anchored suspension bridge scheme has become a competitive bridge scheme because of its novel structure and beautiful appearance. In view of the rapid development of self-anchored suspension bridges in China and the large number of design and adoption, as well as the lag in research, this study will deeply study several key technologies in the construction process of self-anchored suspension bridges. To fill in the blank of construction control theory and method of self-anchored suspension bridge in this area, and improve the design theory and construction method of self-anchored suspension bridge in China. The main contents of this study are as follows: the theory and method of nonlinear analysis of suspension bridge, the key technology of cable-strut erection and the key technology of suspender tensioning, and the optimal adjustment scheme is put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4;U448.25

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