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In order to improve driving safety and comfort of drivers on curved roads in forest areas, a driving simulation test was adopted to evaluate the driving comfort on curved roads in forest areas from a dynamic perspective using eye movement and heart rate as evaluation indexes. Based on the theory of spatial sight distance, five different spatial visual distance scenarios of curved roads in forest areas were established, and the results showed that the rate of change of pupil diameter and the growth rate of heart rate of the driver decreased with the increase of spatial sight distance, and the driving comfort increased continuously. The minimum spatial sight distance values considering the pupil diameter change rate and heart rate growth rate were 101 m and 89 m, and the appropriate spatial sight distance values considering the pupil diameter change rate and heart rate growth rate were 128 m and 132 m. [ABSTRACT FROM AUTHOR]

In order to solve the problem of complex effects between the reinforced soil interface in reinforced soil structures, the paper adopted the micro-unit force balance method of the reinforcing material, considered the effects of shear stiffness and displacement, and derived the formula for the peak tensile force of reinforced soil. The tensile forces and displacements of the reinforcement at each location were predicted if the tensile forces do not exceed the peak pullout force. The maximum peak tensile force was determined, and the effect of effective reinforcement length and shear stiffness on the displacement of reinforcement and its variation rule were investigated within the range of maximum peak tensile force. The results showed that when the peak tensile force was constant, the effective reinforcement length and shear stiffness had a significant effect on the peak tensile force, while the elastic modulus had a relatively small effect on the peak tensile force. The displacement of the reinforcement decreased nonlinearly with the increase of the effective reinforcement length and shear stiffness. The calculation results based on the formula of peak tensile force at the interface of reinforced soil were compared with the test results. It was found that the maximum peak tensile force between the two was not different, and the results agreed well. The research results can provide some theoretical reference for reinforced soil engineering. [ABSTRACT FROM AUTHOR]

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Copyright of Forest Engineering is the property of Forest Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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