多跨连续梁景观廊桥运营期变形性能研究

发布时间：2018-04-21 02:28

本文选题：多跨连续梁 + 景观廊桥　；参考：《长安大学》2015年硕士论文

【摘要】：随着科技的发展和桥梁技术的进步,人们对桥梁功能的需求更加多样化,在满足交通功能的条件下,人们对桥梁的外观造型与周围环境的协调越来越重视。因此,国内外建造了大量造型优美又具有当地文化特色的景观廊桥。与普通桥梁相比较,景观廊桥有很大的二期建筑荷载和人群荷载,因此,景观廊桥在运营期更容易出现变形过大的情况,有必要对景观廊桥运营期的变形性能进行研究。论文查阅了大量国内外相关资料,总结了景观廊桥的发展历程和特点,对影响多跨连续梁景观廊桥运营期变形的因素和计算理论做了详细的介绍,以某多跨连续梁景观廊桥为研究背景,利用有限元软件建立桥梁数值模型,分析了混凝土收缩和徐变、温度和湿度变化、预应力损失和人群荷载对廊桥运营期变形性能的影响,结合运营期三年的变形实测数据,对廊桥运营期的安全性进行了分析,同时将连续梁景观廊桥与普通连续梁桥进行对比,研究了景观廊桥变形的特点,此外对廊桥二期建筑荷载和材料选取的关系做了分析。论文的研究成果在某多跨连续梁景观廊桥运营期的监控中得到了应用。
[Abstract]:With the development of science and technology and the progress of bridge technology, the demand for bridge function is more diversified. Under the condition of satisfying the traffic function, people pay more and more attention to the coordination between the appearance of bridge and the surrounding environment. Therefore, a large number of beautiful and local cultural landscape bridges have been built at home and abroad. Compared with ordinary bridges, landscape covered bridges have large second stage building loads and crowd loads. Therefore, the deformation of landscape covered bridges is more likely to occur in the operation period, so it is necessary to study the deformation performance of landscape covered bridges during operation period. In this paper, a large number of domestic and foreign related materials are consulted, the development history and characteristics of landscape covered bridges are summarized, and the factors affecting the deformation of multi-span continuous beam landscape covered bridges during operation period and the calculation theory are introduced in detail. Taking a multi-span continuous beam landscape gallery bridge as the research background, the finite element software is used to establish the bridge numerical model. The effects of shrinkage and creep of concrete, temperature and humidity change, prestress loss and crowd load on the deformation performance of the bridge during operation are analyzed. Combined with the measured deformation data of three years in operation, the safety of the bridge during operation is analyzed, and the characteristics of the deformation of the bridge are studied by comparing the continuous beam landscape bridge with the common continuous beam bridge. In addition, the relationship between building load and material selection of the second stage of the bridge is analyzed. The research results of this paper are applied to monitor the operation period of a multi-span continuous beam landscape covered bridge.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.7

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