A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-speed railway subgrade structure design method
The invention relates to a high-speed railway subgrade structure design method which comprises the following steps: determining a high-speed railway subgrade structure form and determining a subgradesurface load distribution form; establishing a multilayer roadbed system model; establishing a single-layer soil body stress-strain relationship analytical solution; proposing a subgrade stress and displacement expression considering the material difference of each layer; considering a nonlinear relationship between subgrade filler strain and deformation modulus, and constructing a subgrade structure design method based on iterative computation; and optimizing a subgrade structure based on a subgrade surface dynamic deformation and subgrade bottom layer dynamic strain comprehensive control criterion. The design method is based on the multi-layer system theory, the physical law of each layer structure of the subgrade bed in the service process can be more reasonably represented, the optimalresult of subgrade design is economically and effectively given, and meanwhile, the stability and high efficiency of high-speed rail subgrade design are ensured.
本发明涉及一种高速铁路路基结构设计方法，包括确定高速铁路路基结构形式，确定路基面荷载分布形式；建立多层路基系统模型；建立单层土体应力应变关系解析解；提出考虑各层材料差异的路基应力与位移表达式；考虑路基填料应变与变形模量的非线性关系，构建基于迭代计算的路基结构设计方法；基于路基面动变形与基床底层动应变综合控制准则，优化路基结构。本发明的设计方法基于多层系统理论，能够更合理的表征路基基床各层结构在服役过程中的物理规律，经济有效的给出路基设计的最优结果，同时保证高铁路基设计的平稳性与高效性。
High-speed railway subgrade structure design method
The invention relates to a high-speed railway subgrade structure design method which comprises the following steps: determining a high-speed railway subgrade structure form and determining a subgradesurface load distribution form; establishing a multilayer roadbed system model; establishing a single-layer soil body stress-strain relationship analytical solution; proposing a subgrade stress and displacement expression considering the material difference of each layer; considering a nonlinear relationship between subgrade filler strain and deformation modulus, and constructing a subgrade structure design method based on iterative computation; and optimizing a subgrade structure based on a subgrade surface dynamic deformation and subgrade bottom layer dynamic strain comprehensive control criterion. The design method is based on the multi-layer system theory, the physical law of each layer structure of the subgrade bed in the service process can be more reasonably represented, the optimalresult of subgrade design is economically and effectively given, and meanwhile, the stability and high efficiency of high-speed rail subgrade design are ensured.
本发明涉及一种高速铁路路基结构设计方法，包括确定高速铁路路基结构形式，确定路基面荷载分布形式；建立多层路基系统模型；建立单层土体应力应变关系解析解；提出考虑各层材料差异的路基应力与位移表达式；考虑路基填料应变与变形模量的非线性关系，构建基于迭代计算的路基结构设计方法；基于路基面动变形与基床底层动应变综合控制准则，优化路基结构。本发明的设计方法基于多层系统理论，能够更合理的表征路基基床各层结构在服役过程中的物理规律，经济有效的给出路基设计的最优结果，同时保证高铁路基设计的平稳性与高效性。
High-speed railway subgrade structure design method
高速铁路路基结构设计方法
YE YANGSHENG (author) / ZHANG QIANLI (author) / CAI DEGOU (author) / HAN ZILI (author) / WEI SHAOWEI (author) / YAN HONGYE (author) / YAO JUNKAI (author) / CHEN FENG (author) / YAO JIANPING (author)
2020-06-02
Patent
Electronic Resource
Chinese
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