寒区铁路站场路基服役性能评价与分析

发布时间：2018-04-12 23:27

本文选题：站场路基 + 服役性能　；参考：《北京交通大学学报》2017年01期

【摘要】：通过对青藏铁路那曲物流中心站场路基的分析,从冻土类型、温度、水文、地质及工程条件5个方面选取了12项对路基服役性影响较大的因素作为评价指标,建立了冻土区铁路站场路基服役性能评价体系.在充分考虑各影响因素间关系的基础上引入可靠度理论,结合层次分析法和模糊数学理论建立车站站区路基服役性能的模糊综合评价模型.利用此方法对货物堆载区、车站站区和道路区进行评价,并对铁路站场路基10年后的服役性能进行预测.结果表明:受到堆载区空载的影响,货物堆载区评价得分高,服役性能好;车站站区评价得分较高,服役性能满足要求;道路区的评价得分低,服役性能差,符合现场道路病害严重的情况;经历10次冻融循环后,由于大宗货物堆载的原因,堆载区服役性能降低,经养护维修后,车站站区和道路区服役性能提高,说明有效的养护和维修措施是保证站场路基服役性能正常发挥的前提条件.
[Abstract]:Based on the analysis of roadbed in Naqu Logistics Center of Qinghai-Tibet Railway, 12 factors which have a great influence on the serviceability of roadbed are selected as evaluation indexes from five aspects of frozen soil type, temperature, hydrology, geology and engineering conditions.An evaluation system for service performance of railway station subgrade in permafrost region is established.The reliability theory is introduced on the basis of fully considering the relationship between various factors, and the fuzzy comprehensive evaluation model of the service performance of the subgrade in the station area is established by combining the analytic hierarchy process and the fuzzy mathematics theory.This method is used to evaluate the cargo loading area, the station station area and the road area, and to predict the service performance of the railway station roadbed after 10 years.The results show that due to the influence of no-load in the loading area, the evaluation score of the cargo loading area is high, the service performance is good, the evaluation score of the station area is higher, the service performance meets the requirements, the evaluation score of the road area is low, and the service performance is poor.After 10 freeze-thaw cycles, the service performance of the stowage area decreased due to the heavy cargo loading, and after maintenance and maintenance, the service performance of the station station and the road area was improved.It shows that effective maintenance and maintenance measures are the precondition to ensure the normal service performance of the subgrade of the station yard.
【作者单位】：北京交通大学土木建筑工程学院;石家庄铁道大学土木工程学院;石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室;中铁建工集团西北分公司;
【基金】：国家自然科学基金青年科学基金项目(51208320) 河北省普通高等学校青年拔尖人才计划项目(BJ2014050)~~
【分类号】：U213.1

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