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摘要：
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线下工程沉降评估已成为高速铁路建设和运行过程中的重要环节。以京沪高铁六标段线下工程沉降观测为研究对象,对asaoka法、GM(1,1)法、遗传算法双曲线的应用进行介绍。根据相关评估标准,通过对实测数据进行分析,并分别建立三种模型进行工后沉降预测评估,藉此判断是否满足无砟轨道铺设条件,并通过对评估成果进行对比分析,进一步探讨该沉降评估方法的科学性与实用性。
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The subsidence assessment of projects under lines has become an important part of the construction and operation of high-speed railway.Take the sixth section of Beijing to Shanghai high-speed railway as the object for study and make introduction for the Asaoka,GM(1,1),Genetic Algorithms method.According to the relevant evaluation criteria,analyzing the measured data and then establishing three models to assessment the subsidence as the project finished,then making a judgment whether it satisfied of the condition of the unballasted track laying,and by comparing the results of the evaluation,getting a further discussion on the usability and scientificity of the subsidence assessment method.
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基金项目：
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作者简介：
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参考文献：
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[1]铁道部.客运专线铁路无碴轨道铺设条件评估技术指南[S].北京:中国铁道出版社,2006(158号).
[2]铁道部.客运专线无碴轨道铁路工程测量暂行规定[S].北京:中国铁道出版社,2006(189号).
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