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Box type frame roadbed
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A box-type and subgrade technology, applied in roads, roads, tracks, etc., can solve the problems of difficult settlement requirements, lack of filling, and large base area
Pending Publication Date: 2019-09-20
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Abstract
Description
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Problems solved by technology
The traditional trapezoidal subgrade is generally filled with a large number of high-standard fillers on the natural foundation, the base covers a large area and the settlement is difficult to meet the requirements
However, because high-speed railways have high requirements for fillers, and land resources in plain areas are scarce, fillers are very scarce, which greatly increases the cost of construction. The comprehensive cost per kilometer has no economic advantage compared with bridges, and a large amount of cultivated land is occupied because of the wide roadbed.
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Embodiment 1
[0037]This embodiment provides a box-shaped frame subgrade. The box-shaped frame subgrade includes a preset number of box-shaped frames for the subgrade arranged in the longitudinal direction, and the adjacent box-shaped frames for the subgrade are separated by a predetermined length Expansion joints; the box frame for the subgrade can be figure 1 or figure 2 As shown in , the side wall panels of the box frame for the subgrade are respectively located in the middle of the two steel rails of the two lines.
[0038] Such as figure 1 As shown, the box-shaped frame for the roadbed includes a top plate 11, a bottom plate 12, and two side wall panels 13 between the top plate 11 and the bottom plate 12, and the upper and lower ends of the side wall panels 13 are respectively connected to the top plate 11 and the bottom plate 12; the two side wall panels 13 are distributed laterally on the top plate 11 or the bottom plate 12, and the two side wall panels 13 are separated by a prese...
Embodiment 2
[0059] The content of this embodiment is the same as that of the first embodiment except for a part that is different from the first embodiment. The following only introduces this part of the different content, and the schematic diagram will not be shown separately.
[0060] In this embodiment, the lateral width of the side wall panels 13 is 0.4 meters, and the lateral distance between two adjacent side wall panels 13 is 4.6 meters.
[0061] In this embodiment, the thickness of the top board 11 is 0.4 meters, and the top board 11 extends 3.0 meters outside the side wall panels 13; the thickness of the bottom board 12 is 0.8 meters, and the bottom board 12 The outside of the wall panel 13 extends 0.9 meters.
Embodiment 3
[0063] The content of this embodiment is the same as that of the first embodiment except for a part that is different from the first embodiment. The following only introduces this part of the different content, and the schematic diagram will not be shown separately.
[0064] In this embodiment, the lateral width of the side wall panels 13 is 0.6 meters, and the lateral distance between two adjacent side wall panels 13 is 6.5 meters.
[0065] In this embodiment, the thickness of the top board 11 is 0.6 meters, and the top board 11 extends 3.7 meters outside the side wall panels 13; the thickness of the bottom board 12 is 1.2 meters, and the bottom board 12 The outer side of the wall panel 13 extends 1.1 meters.
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Abstract
The invention discloses box type frame roadbed. The box type frame roadbed comprises a preset number of roadbed box type frames arranged in the longitudinal direction, and expansion joints with a preset length are arranged between the adjacent roadbed box type frames at interval; each roadbed box type frame comprises a top plate, a bottom plate and at least two side wall plates, wherein the side wall plates are located between the top plate and the bottom plate, and the upper end and the lower end of each side wall plate are respectively connected with the top plate and the bottom plate; at least two side wall plates are arranged at the top plate or the bottom plate in transverse distribution, and two adjacent the side wall plates are spaced by a preset distance; each roadbed box type frame further comprises at least a transverse closed rectangular cavity enclosed by the top plate, the bottom plate and the side wall plates; the top plate and the bottom plate extend to the outer side of the side wall plates with a preset length, and the extension length of the top plate is greater than that of the bottom plate. The box type frame roadbed is capable of reducing the roadbed construction cost of a high-speed railway and occupied land area.
Description
technical field [0001] The invention relates to the field of railway roadbeds, in particular to a box-shaped frame roadbed. Background technique [0002] With the improvement of people's living standards and the development of railway technology, there are more and more high-speed trains and corresponding high-speed railways. [0003] In order to ensure the safe and smooth operation of high-speed railway trains, the subgradeengineering structure should have sufficient strength, stability and durability. Compared with the central and western regions, when building high-speed railways in the eastern plains, due to the soft soil, the natural foundation cannot meet the high-standard settlement control requirements of high-speed railways, so foundation reinforcement must be carried out. The traditional trapezoidal subgrade is generally filled with a large number of high-standard fillers on the natural foundation, and the base covers a large area and the settlement is difficult ...
Claims
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Application Information
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