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树脂砂浆板式轨道结构分析与试验研究
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摘要
目前国内正处于一个发展高速铁路的黄金时期,无砟轨道将会得到更广泛的应用。在我国修建客运专线的过程中,以板式无砟轨道为主,如何在现有的板式无砟轨道的基础上进一步的改善提高,更好的应用于我国铁路的建设中已显得迫在眉睫。传统的CA砂浆材料虽有价格较低,使用成本较低的优点,,但也存在许多本身难以克服的缺点,本文在CRTSI型板式无砟轨道结构型式的基础上提出了一种的新的轨道型式,以树脂砂浆代替CA砂浆做为调整层,并建立有限元模型以及试验研究证明其可行性。
     首先,对树脂砂浆材料的力学性能做了抗压试验、抗拉试验、抗剪试验,试验结果表明,树脂砂浆材料的力学性能能够满足要求。
     再次,根据CRTSI型板式无砟轨道结构型式,对树脂砂浆板式轨道结构做了初步设计研究,并建立有限元模型对结构作了力学分析,力学分析结果表明,此结构是安全可靠的:
     其次,对树脂砂浆板式轨道结构进行了试验研究,包括静载试验(垂直静载试验与水平静载试验)、疲劳试验,结果表明,树脂砂浆板式轨道承载力满足要求。
Currently the development of high-speed railway is in a golden age in China. Ballastless track will be more widely applied in the future. Slab track is the main form in the construction of passenger line in China. It is imminent to improve the now existing slab track form to make it better used in the future construction. Although the traditional CA mortar material has the advantage of cheaper price and lower cost, it still has some unconquerable weakness. This paper brings up a new track form based on the CRST1 ballastless track. Resin mortar material will substitute CA mortar material as the adjusting layer. Also the paper will build a finite element model and corresponding experiment to prove the feasibility of this new track form.
     First, Compression test, tensile test and shear test were done on resin mortar material to prove its mechanical properties. The experiment results show that the mechanical properties of resin mortar material can satisfy the requirements.
     Second, based on the structure form of CRSTI slab, a preliminary research was preceded on the structure of resin mortar slab track and a finite element model was build to analyze the mechanical properties of the structure. The analysis results prove that this structure is safe and reliable.
     Third, a experimental research was done on the structure of the resin slab track. Including static load test(vertical and horizontal load test), fatigue test. The test results show that the bearing capacity of the resin mortar slab track also meet the requirements.
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