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- Title
高速铁路路基段超高声屏障荷载取值与分析.
- Authors
周继超; 郑博文
- Abstract
In view of the tendency to increase the height of high-speed railway subgrade sound barriers and the fact that the current general reference map of sound barriers in the railway industry cannot cover the situation where the sound barrier height is greater than or equal to 5 m, and to solve the design problem of the vertical sound barrier with the height of the high-speed railway subgrade greater than or equal to 5 m and find out the regularity of the load value and load combination of the ultra-high sound barrier, this paper starts with the load classification and load calculation of the high-speed railway subgrade sound barrier. The factors affecting the value of the horizontal load are analyzed, and the whole process of the value of the horizontal load is systematically described. The load effects of the basic combination and standard combination calculated under different train speeds with and without vehicles are analyzed, and the variation of load effect under different working conditions, different load combinations and different speed target values is illustrated by examples within the range of 5m to 12 m sound barrier height. At the same time, such main effects with the changes of height are provided, as the horizontal displacement at the top of the column, the bending moment and shear force at the root of the column. Some design suggestions are put forward for the special conditions of high roadbed and high seismic fortification intensity encountered in the design of ultra-high noise barrier structure in the subgrade section.
- Subjects
NOISE barriers; BENDING moment; TORQUE; EARTHQUAKE intensity; SHEARING force; HIGH speed trains
- Publication
Railway Standard Design, 2023, Vol 67, Issue 5, p185
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202202080002