冻土地区高速铁路预制梁场规划设计与箱梁制梁工艺研究
发布时间：2018-08-22 18:47
【摘要】：如何缓解冻土地区建筑物的冻害影响是一个值得关注的问题。随着我国高速铁路的快速发展，不可避免地要在冻土地区进行高速铁路建设。预制梁场作为建设高铁的一个十分重要的大型临时工程，如何能够保证冻土地区的预制梁场的建厂以及制梁的质量，就是本文的研究重点。 详细介绍了冻土分布情况，冻土的分类原则以及冻土的各项性质。并对冻土地区可能产生的房屋病害种类进行了总结，简要地提出了一些应对措施。 综合了各地梁场的建设经验，结合冻土地区的特殊影响，对整个梁场前期规划进行了设计，设计内容包括梁场的选址，梁场规模的确定以及梁场平面布置形式的选择。 在预制梁场中的各个建筑物中，制梁台座和存梁台座是预制梁的关键性建筑，由于冻土地区的特殊土质，本文在设计制存梁台座基础时选用了桩基础，并通过一个工程实例进行了相应的承载力验算。 对冻土低温地区的制梁工艺进行了简要的研究，提出了一些保证低温地区制梁质量的措施。 结合弹性地基梁理论对提梁机轨道基础的设计计算进行探讨，并对地基系数k的取值进行了分析比较和讨论。
[Abstract]:How to mitigate the freezing damage of buildings in frozen soil area is a problem worth paying attention to. With the rapid development of high-speed railway in China, it is inevitable to carry out high-speed railway construction in frozen earth region. Precast beam yard is a very important temporary project in the construction of high-speed railway. How to guarantee the construction of prefabricated beam yard and the quality of beam making in frozen soil area is the key point of this paper. The distribution of frozen soil, the classification principle of frozen soil and the properties of frozen soil are introduced in detail. The possible types of house diseases in permafrost regions are summarized, and some countermeasures are put forward. Based on the experience of the construction of the beam yard and the special influence of the frozen soil region, the early planning of the whole beam yard is designed. The design content includes the site selection of the beam yard, the determination of the scale of the beam yard and the choice of the layout of the beam yard. Among the buildings in the precast beam yard, the beam-making pedestal and the beam-storing pedestal are the key buildings of the precast beam. Because of the special soil quality in the frozen soil area, the pile foundation is used in the design of the beam-storing pedestal foundation. The bearing capacity is checked by an engineering example. The technology of beam making in low temperature region of frozen soil is studied briefly, and some measures to guarantee the quality of beam making in low temperature area are put forward. Based on the theory of elastic foundation beam, the design and calculation of beam lifting machine track foundation are discussed, and the value of foundation coefficient k is analyzed and compared.
【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】：2014
【分类号】：U445.8;U445.471
本文编号：2197988
[Abstract]:How to mitigate the freezing damage of buildings in frozen soil area is a problem worth paying attention to. With the rapid development of high-speed railway in China, it is inevitable to carry out high-speed railway construction in frozen earth region. Precast beam yard is a very important temporary project in the construction of high-speed railway. How to guarantee the construction of prefabricated beam yard and the quality of beam making in frozen soil area is the key point of this paper. The distribution of frozen soil, the classification principle of frozen soil and the properties of frozen soil are introduced in detail. The possible types of house diseases in permafrost regions are summarized, and some countermeasures are put forward. Based on the experience of the construction of the beam yard and the special influence of the frozen soil region, the early planning of the whole beam yard is designed. The design content includes the site selection of the beam yard, the determination of the scale of the beam yard and the choice of the layout of the beam yard. Among the buildings in the precast beam yard, the beam-making pedestal and the beam-storing pedestal are the key buildings of the precast beam. Because of the special soil quality in the frozen soil area, the pile foundation is used in the design of the beam-storing pedestal foundation. The bearing capacity is checked by an engineering example. The technology of beam making in low temperature region of frozen soil is studied briefly, and some measures to guarantee the quality of beam making in low temperature area are put forward. Based on the theory of elastic foundation beam, the design and calculation of beam lifting machine track foundation are discussed, and the value of foundation coefficient k is analyzed and compared.
【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】：2014
【分类号】：U445.8;U445.471
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