A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roadbed settlement lifting control equipment and roadbed settlement lifting control method
Aiming at the defects of the existing high-speed railway roadbed continuous compaction detection index, the invention provides a high-speed railway roadbed continuous compaction control index based onvibration signal energy by analyzing the transmission characteristic of energy between a vibration wheel and a filler in the roadbed compaction process, and verifies the effectiveness by comparing with the traditional CMV index. The main research conclusions are as follows: along with the increase of compaction times, the density and rigidity of the filler present a trend of increasing firstly and then stabilizing, and in the process of changing the filler from a loose state to a compact state, the energy carried by a vibration signal also presents a trend of increasing firstly and then stabilizing; in combination with the law of conservation of energy, the energy exchange in the whole compaction process is reflected by the change characteristics of the energy carried by the vibration signals of the vibration wheel, the energy exchange is characterized in the form of vibration signal energy spectrum, and the energy spectrum is used as a continuous compaction control index to judge thecompaction degree of the filler. The correlation between the CEV index and the dynamic deformation modulus Evd is established, and the correlation coefficients of the CEV index and the dynamic deformation modulus Evd are greater than the CMV index, which indicates that the CEV energy index provided by the invention is feasible in roadbed continuous compaction control.
针对现有高速铁路路基连续压实检测指标的不足，本文通过分析路基压实过程中振动轮与填料间能量的传递特性，提出基于振动信号能量的高速铁路路基连续压实控制指标，并与传统的CMV指标进行对比验证其有效性，主要研究结论有：随压实遍数的增加，填料的密度、刚度呈现出先增大后稳定的趋势，在填料由松散状态变为密实状态过程中，振动信号所携带的能量同样呈现出先增大后稳定的趋势；结合能量守恒定律，以振动轮振动信号所携带能量的变化特性来反映整个压实过程中的能量交换，利用振动信号能量谱的形式对其进行表征，并以此作为连续压实控制指标，判定填料的压实程度。建立CEV指标和动态变形模量Evd间的相关关系，其相关系数均大于CMV指标，表明本文所提出的CEV能量指标在路基连续压实控制中是可行的。
Roadbed settlement lifting control equipment and roadbed settlement lifting control method
Aiming at the defects of the existing high-speed railway roadbed continuous compaction detection index, the invention provides a high-speed railway roadbed continuous compaction control index based onvibration signal energy by analyzing the transmission characteristic of energy between a vibration wheel and a filler in the roadbed compaction process, and verifies the effectiveness by comparing with the traditional CMV index. The main research conclusions are as follows: along with the increase of compaction times, the density and rigidity of the filler present a trend of increasing firstly and then stabilizing, and in the process of changing the filler from a loose state to a compact state, the energy carried by a vibration signal also presents a trend of increasing firstly and then stabilizing; in combination with the law of conservation of energy, the energy exchange in the whole compaction process is reflected by the change characteristics of the energy carried by the vibration signals of the vibration wheel, the energy exchange is characterized in the form of vibration signal energy spectrum, and the energy spectrum is used as a continuous compaction control index to judge thecompaction degree of the filler. The correlation between the CEV index and the dynamic deformation modulus Evd is established, and the correlation coefficients of the CEV index and the dynamic deformation modulus Evd are greater than the CMV index, which indicates that the CEV energy index provided by the invention is feasible in roadbed continuous compaction control.
针对现有高速铁路路基连续压实检测指标的不足，本文通过分析路基压实过程中振动轮与填料间能量的传递特性，提出基于振动信号能量的高速铁路路基连续压实控制指标，并与传统的CMV指标进行对比验证其有效性，主要研究结论有：随压实遍数的增加，填料的密度、刚度呈现出先增大后稳定的趋势，在填料由松散状态变为密实状态过程中，振动信号所携带的能量同样呈现出先增大后稳定的趋势；结合能量守恒定律，以振动轮振动信号所携带能量的变化特性来反映整个压实过程中的能量交换，利用振动信号能量谱的形式对其进行表征，并以此作为连续压实控制指标，判定填料的压实程度。建立CEV指标和动态变形模量Evd间的相关关系，其相关系数均大于CMV指标，表明本文所提出的CEV能量指标在路基连续压实控制中是可行的。
Roadbed settlement lifting control equipment and roadbed settlement lifting control method
路基沉降抬升控制设备和方法
CAI DEGOU (author) / WEI SHAOWEI (author) / YAN HONGYE (author) / CHEN FENG (author) / YAO JIANPING (author) / LOU LIANGWEI (author) / YAN XIN (author) / LYU SONG (author) / SHI YUEFENG (author) / GENG LIN (author)
2021-01-26
Patent
Electronic Resource
Chinese
IPC:
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
Railway reinforced roadbed and railway settlement roadbed reinforcing method
| European Patent Office | 2020