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Corrugated steel tube culvert filling structure and filling method thereof

A corrugated steel pipe and corrugated pipe technology is applied to the corrugated steel pipe culvert filling structure and the corrugated steel pipe culvert filling field, to achieve the effects of shortening the filling time, uniform stress and improving adverse effects.

Active Publication Date: 2014-11-19
CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, since the corrugated steel pipe is a flexible material, when the filling height of the top of the pipe is small (<100cm), heavy road rollers must not be used above the top of the pipe

Method used

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  • Corrugated steel tube culvert filling structure and filling method thereof
  • Corrugated steel tube culvert filling structure and filling method thereof
  • Corrugated steel tube culvert filling structure and filling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A corrugated steel pipe culvert filling structure, including a roadside backfill area 4 arranged on the ground 5, a structural backfill area 3 arranged in the roadside backfill area 4, and corrugated steel pipes arranged in the structural backfill area 3 6, and the corrugated steel pipe 6 is arranged on the sand cushion layer 1, the upper surface of the sand cushion layer 1 is flush with the ground, and the sand cushion layer 1 is provided with a depression matching the shape of the lower part of the corrugated steel pipe 6, and the sand cushion layer 1 is arranged on Substrate 2 on top.

[0046]The structural backfill area 3 includes backfill layers stacked in sequence, and the thickness of each backfill layer is 20-50 cm.

[0047] The bottom surface of the sub-base 2 is provided with a geotextile 8 .

[0048] The distance T that the sub-base layer 2 extends outward from the outermost side of the corrugated steel pipe is greater than 2m.

[0049] The corrugated steel...

Embodiment 2

[0055] When the substratum of the culvert is rock, the corrugated steel pipe is a round pipe, and the diameter is D=2m:

[0056] The thickness of the sand cushion layer 1 is t3=30cm, the thickness of the subbase layer 2 is t5=60cm, the top width of the subbase layer 2 is T=5m, and the height of the structural backfill area 3 above the top of the corrugated steel pipe 6 is t1=100cm. The particle size of the sand cushion layer 1 is not greater than 12 mm. The sub-base 2 is gravel, the particle size is not more than 37.5mm, the sub-base 2 should not be over-compacted, the compaction degree is between 85-90%, and the extension distance T of the sub-base is 2m. The structural backfill area 3 is filled in layers with a thickness of 20 cm for each layer, and the compaction degree is between 93% and 95%. Within the height of the structural backfill area, the road roller can run parallel to the culvert, and must not run within 150cm of the pipe side; above the height of the structural...

Embodiment 3

[0058] When the substratum of the culvert is a swamp, the corrugated steel pipe is a round pipe, and the diameter is D=6m:

[0059] The thickness of sand cushion layer 1 is t3=30cm, the thickness of subbase layer 2 is t5=80cm, the top width of subbase layer 2 is T=10m, the height of structural backfill area 3 above the top of corrugated steel pipe 6 is t1=100cm, and the particle size of sand cushion layer 1 is different. greater than 12mm. The sub-base 2 is gravel, the particle size is not more than 37.5mm, the sub-base 2 should not be over-compacted, and the compaction degree is between 85-90%. Geotextiles are laid within the range of the lower surface D of the sub-base 2, and the extension distance T of the sub-base is 2m. . Structural backfill area 3 is sand and gravel, and the thickness of each layer is 40cm. The compaction degree is between 93 and 95%. Within the height range of the structural backfill area 3, the road roller can run parallel to the culvert, and shall ...

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Abstract

The invention discloses a corrugated steel tube culvert filling structure and further discloses a filling method of the corrugated steel tube culvert filling structure. The filling structure overcomes the defect that the walls of corrugated steel tubes can be easily damaged due to an original masonry culvert rigid foundation, a flexible foundation with a sand cushion and a subbase is adopted for filling, geotextile is adopted under weak geological conditions, and thus the corrugated steel tubes can be prevented from settling unevenly. The whole tube bodies are placed under the protection of a structural backfill area, the tube bodies of the corrugated steel tubes can be effectively protected, and the characteristic of the flexible material of the corrugated steel tubes can be matched better. The filling structure is suitable for corrugated steel tubes in various shapes such as a circle, an oval and a tube arch and is also suitable for construction with a tube ditch method or an embankment building method.

Description

technical field [0001] The invention relates to the field of culvert pipe fittings filling, in particular to a corrugated steel pipe culvert filling structure, and also to a corrugated steel pipe culvert filling method. It is suitable for backfilling of corrugated steel pipe culvert construction in road construction, especially in mountainous roads and unfavorable geological conditions. Background technique [0002] With the rapid development of road construction in mountainous areas and the further improvement of steel production and processing technology, corrugated steel pipe culverts have the characteristics of good mechanical performance, strong adaptability, short construction period, long service life and good driving comfort. In road construction, especially in mountainous roads and unfavorable geological conditions, it is increasingly widely used. [0003] However, there is no construction specification for corrugated steel pipe culverts in China at present. The co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F5/00E02D17/18
Inventor 余顺新卢傲邓涛鞠金荧张春华夏飞王志成何苑
Owner CCCC SECOND HIGHWAY CONSULTANTS CO LTD
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