无平衡重高位拼装桥梁转体施工控制研究

发布时间：2018-07-20 14:59

【摘要】：近年来,由于人口数量的增加和用地的限制,逐渐地出现了道路立体化即多条线路立体交叉,那么城市道路的立体化必然是未来的发展趋势。桥梁转体施工就是在跨过既有线、山谷、河流的一个很好的应用。桥梁转体施工有平转法和竖转法,经过多年的发展,这两种方法已经发展的相当成熟。修建跨过既有线的桥梁,在不影响既有线路的情况下,桥梁转体施工无疑是最好的方法。然而,交通干线工况复杂,往往不具备线下拼装条件,且对配重有较高的要求,因此,复杂工况下的高位拼装成了广大研究者需要解决的难题。本文以春申特大桥跨越沪昆铁路的简支梁转体施工为工程背景,全面的介绍了桥梁转体施工的准备工作、施工工艺流程以及在施工过程中的一些验算。沪昆铁路是电气化铁路,要想把对其影响的程度降到最低,所遇到的技术难题可想而知,在研究探讨了本次转体施工过程中所遇到的技术难题后,根据现场的条件,我们制定出了高位拼装、无平衡重转体的方案,这是本工程的亮点。在施工过程中转动装置做了改进,并且设计了走行滑道梁,最后对本次转体施工进行了总结。
[Abstract]:In recent years, due to the increase of population and the limitation of land use, the three-dimensional road is gradually appeared, that is, the intersection of many lines, so the three-dimensional road of the city is bound to be the development trend in the future. Bridge turnaround construction is a good application across existing lines, valleys, and rivers. There are horizontal and vertical methods for bridge rotation construction. After years of development, these two methods have been developed quite mature. It is the best way to build the bridge over the existing line without affecting the existing line. However, the traffic trunk is complex in working condition, it often does not have the offline assembling condition, and has the higher requirement to the counterweight, therefore, the high position assembly under the complex working condition has become the difficult problem which the majority of researchers need to solve. Based on the engineering background of simply supported beam rotation construction of Chunshen Super Bridge across the Shanghai-Kunming Railway, this paper comprehensively introduces the preparation work, construction technological process and some checking calculation in the construction process. The Hu-Kun Railway is an electrified railway. If we want to minimize the impact on it, we can imagine the technical difficulties encountered. After studying and discussing the technical difficulties encountered in the course of this rotary construction, according to the conditions of the site, We have worked out a high-level assembly, non-balanced weight of the program, which is the highlight of the project. In the process of construction, the rotary device is improved, and the sliding beam is designed. Finally, the author summarizes the rotary construction.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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