缆索吊装系统缆索力优化及仿真分析

发布时间：2018-04-22 07:32

本文选题：拱桥施工 + 缆索吊装系统　；参考：《福建农林大学》2017年硕士论文

【摘要】：在我国的基础建设工程当中,桥梁占据了很重要的一部分,而钢筋混凝土拱桥凭借其建造历史久,技术娴熟,取材方便,加工简单,工期短等众多优点,被工程师所选用。而缆索吊装施工方法,以其适应性强,搭建拆解方便,效率高等优点被广泛应用于钢筋混凝土施工当中,但是施工过程中,也不缺乏一些还有待改善的地方,例如跨径、拱肋重量的增加带来的拱肋成型难度,以及不易调整准确的缆索力及扣索力,这些问题都影响了拱桥的正常施工。本论文主要针对以上几个施工难点,首先介绍了国内外的拱桥发展情况,拱桥施工的方法以及各自的优缺点,然后以坪坑拱桥为背景,采取适合的施工方式,采取优化计算理论对缆索力进行静力平衡分析,对抛物线法与悬链线法得出的结果作比较,得出含有垂度比与水平张力的误差值;再以坪坑拱桥实际工况为背景进行缆索力的计算、同时分析塔架系统的优化方式;紧接着应用数学方法计算扣索力,得出此理论下最优化的扣索力,以及施工过程中各拱肋的欲抬高值;最后凭借以上所得出的数据,进行仿真。
[Abstract]:In our country, the bridge occupies a very important part, and the reinforced concrete arch bridge has been chosen by engineers because of its many advantages, such as long history of construction, skillful technology, convenient material selection, simple processing, short construction period and so on. The cable hoisting construction method has been widely used in reinforced concrete construction with its advantages of strong adaptability, convenient construction and high efficiency. However, during the construction process, there are still some areas that need to be improved, such as span. The difficulty of forming arch rib caused by the increase of arch rib weight, and the difficulty of adjusting cable force and cable buckling force, all affect the normal construction of arch bridge. This paper mainly aims at the above several construction difficulties, first introduces the development of the arch bridge at home and abroad, the construction method of the arch bridge and their advantages and disadvantages, and then takes the Pingkeng arch bridge as the background, adopts the suitable construction method. The static equilibrium analysis of cable force is carried out by using the theory of optimization calculation. The results obtained by parabola method and catenary method are compared and the error value with sag ratio and horizontal tension is obtained. Then the cable force is calculated under the background of the actual working condition of Pingkeng arch bridge, and the optimization method of tower system is analyzed, and then the optimum cable buckling force is obtained by using mathematical method. And the desired elevation value of each arch rib in the construction process; finally, with the above obtained data, the simulation is carried out.
【学位授予单位】：福建农林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4

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