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Steel corrugated culvert pipe structure with EPS (Expandable Polystyrene) load reducing plates

A corrugated culvert pipe and load-reducing plate technology, applied in the fields of railway and highway tunnel engineering, can solve problems such as large load and easy deformation, and achieve the effect of prolonging life, protecting structural safety and strong durability.

Pending Publication Date: 2021-05-14
XIAN CENTURY METAL STRUCTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a steel corrugated culvert structure with EPS load-reducing plates, which solves the problem that the steel corrugated culvert in the prior art is easily deformed due to excessive load when the filling height increases

Method used

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  • Steel corrugated culvert pipe structure with EPS (Expandable Polystyrene) load reducing plates
  • Steel corrugated culvert pipe structure with EPS (Expandable Polystyrene) load reducing plates
  • Steel corrugated culvert pipe structure with EPS (Expandable Polystyrene) load reducing plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] see figure 1 , this embodiment discloses a steel corrugated culvert structure with EPS load-relief plates, including a foundation, on which a sand and gravel cushion 1 is laid, the thickness of the sand and gravel cushion 1 is 50 cm, and the gravel of the sand and gravel cushion 1 is the largest The particle size is less than 10mm, and the compaction degree of the sand and gravel cushion is greater than 97%; the steel corrugated culvert 2 is set on the sand and gravel cushion 1, and the upper end of the steel corrugated culvert 2 is provided with a horizontal EPS load-reducing body 3, and the horizontal EPS load-reducing body 3 Including four stacked EPS veneers, the thickness of the four stacked EPS veneers is the same, 20cm, the width of the bottom EPS veneer is greater than the maximum outer diameter of the steel corrugated culvert pipe, and the four EPS veneers are from top to bottom The bottom is stacked in a ladder shape, in which the upper EPS board is narrow, an...

Embodiment 2

[0027] see figure 2 , and the difference from Example 1 is that the transverse EPS load-relief body 3 includes five stacked EPS veneers, wherein the thickness of the four stacked EPS veneers on the upper layer is the same, all of which are 20 cm, and their arrangement is the same as that of the embodiment The same as in 1, stacked from top to bottom in a ladder shape, the EPS veneer on the upper layer is narrow, and the EPS veneer on the lower layer is wide; there is also a thickened EPS veneer on the bottom layer, its thickness is greater than 40cm, and the thickened EPS veneer The lower end surface of the veneer is provided with an arc-shaped stabilizing groove, and the stabilizing groove fits with the arc top of the upper end of the steel corrugated culvert 2, so as to ensure that the entire horizontal EPS load-reducing body 3 is not easy to overturn after filling.

Embodiment 3

[0029] see image 3 , the difference from Embodiment 1 or 2 is that a vertical EPS load-reducing body 5 is arranged on both sides of the steel corrugated culvert 2, and the vertical EPS load-reducing body 5 includes three equal-sized EPS veneers, and the vertical EPS load-reducing body The body 5 is fixed by the base 6 embedded in the gravel cushion 1, and the height of the vertical EPS lightening body 5 is greater than the radius of the steel corrugated culvert 2. In this embodiment, the upper edge of the vertical EPS lightening body 5 is at The horizontal diameter line of steel corrugated culvert pipe 2. The vertical EPS load-reducing body 5 is used to reduce the load on both sides of the steel corrugated culvert 2, reduce the horizontal pressure of the fill on both sides of the steel corrugated culvert 2, and prolong the life of the culvert.

[0030] The test proves that the unloaded steel corrugated culvert shows the characteristics of rigid pipe at the lower stage of fil...

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Abstract

The invention discloses a steel corrugated culvert pipe structure with an EPS (Expandable Polystyrene) load reducing plate, which comprises a foundation, a sand gravel cushion layer is paved on the foundation, a steel corrugated culvert pipe is arranged on the sand gravel cushion layer, a transverse EPS load reducing body is arranged on the upper end face of the steel corrugated culvert pipe, and soil filling layers are arranged on two sides and the upper end of the steel corrugated culvert pipe and the upper end of the transverse EPS load reducing body. The transverse EPS load reducing body comprises a plurality of stacked EPS veneers, the width of the EPS veneer on the lowest layer is larger than the maximum outer diameter of the steel corrugated culvert pipe, the EPS veneers are connected through a row of fixing long nails in the centers of the EPS veneers, and the lower ends of the fixing long nails are connected with the steel corrugated culvert pipe. The transverse EPS load-reducing body is arranged at the top of the steel corrugated culvert pipe and used for increasing the settlement deformation space of filling soil on the pipe top, the vertical EPS load-reducing bodies are arranged on the two sides of the steel corrugated culvert pipe, the transverse EPS load-reducing body and the vertical EPS load-reducing bodies conduct convergence deformation cooperative work, load reduction is conducted on the whole steel corrugated culvert pipe, the service life of the culvert pipe can be prolonged, and the service life of the steel corrugated culvert pipe is prolonged. The structural safety of the culvert pipe is protected.

Description

technical field [0001] The invention belongs to the technical field of railway and highway tunnel engineering, and in particular relates to a steel corrugated culvert structure with EPS load-reducing plates. Background technique [0002] Steel corrugated culvert, also called corrugated pipe culvert, refers to the threaded corrugated pipe used for culverts buried under roads and railways. It is a circular steel structure pipe made of corrugated steel coils or assembled with corrugated steel sheets. The corrugated structure of the metal corrugated pipe culvert can make the road surface of the culvert reasonably stressed, the load distributed evenly, and has a certain anti-deformation ability, which can solve the problem of damage to the concrete structure of the bridge and the pipe culvert in the cold region of the north (frost); Expansion joints improve driving comfort; it is beneficial to improve the "staggered platform" phenomenon at the junction of soft soil foundation str...

Claims

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Application Information

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IPC IPC(8): E01F5/00E02D27/46
CPCE01F5/005E02D27/46
Inventor 赵建华鲁楠
Owner XIAN CENTURY METAL STRUCTURE CO LTD
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